CN106922003A - The sending method and device of cell downlink data - Google Patents
The sending method and device of cell downlink data Download PDFInfo
- Publication number
- CN106922003A CN106922003A CN201510998766.8A CN201510998766A CN106922003A CN 106922003 A CN106922003 A CN 106922003A CN 201510998766 A CN201510998766 A CN 201510998766A CN 106922003 A CN106922003 A CN 106922003A
- Authority
- CN
- China
- Prior art keywords
- bandwidth
- cell
- downlink
- downlink data
- resource
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides the sending method and device of a kind of cell downlink data, wherein, the method includes：According to specified cell coverage area, the first downlink bandwidth of cell is calculated；The downlink data of cell is sent on the band resource of the first downlink bandwidth.By the present invention, there is provided a kind of method of increase cell coverage area, solve caused when by way of reducing the protocol bandwidth that RRU is supported to increase cell coverage area RRU costs in correlation technique and increase and the inflexible problem of transmitted bandwidth.
Description
Technical field
The present invention relates to the communications field, in particular to the sending method and device of a kind of cell downlink data.
Background technology
Long Term Evolution (Long Time Evolution, referred to as LTE) product in correlation technique is mainly directed towards room
Interior and outdoor grand covering, single radio frequency extension unit (Radio Remote Unit, referred to as RRU) power all has
Limit, cell coverage area is limited.And the covering scenes such as mountain area or Gobi desert are directed to, user distribution is mainly characterized by
Scope is big, and density is small, if using existing product networking, can only increase covering by way of adding station, this undoubtedly can
Increase the cost of operator.
Under current LTE standards, if to increase cell coverage area, in the case of RRU power limiteds, uniquely
Method is exactly that RRU supports smaller protocol bandwidth, and this requires that RRU must simultaneously support various bandwidth.But related skill
The method of art can bring many drawbacks simultaneously, and first, this can bring the increase of RRU costs, secondly, the actual hairs of RRU
Penetrate bandwidth underaction, it is impossible to adjust on demand.
In for correlation technique, the technical problem of RRU supported protocol bandwidth must be adjusted when cell coverage area is increased,
It is not yet found that the solution of effect, does not find that, in the case where cell parameter is constant, other can increase cell and cover yet
The method of lid scope.
The content of the invention
The invention provides the sending method and device of a kind of cell downlink data, solve in correlation technique by reducing
The mode of the protocol bandwidth that RRU is supported increases caused during cell coverage area RRU costs increase and transmitted bandwidth
Inflexible problem.
According to an aspect of the invention, there is provided a kind of sending method of cell downlink data, including：According to specified
Cell coverage area, calculates the first downlink bandwidth of the cell；Provided in the frequency band of the first downlink bandwidth
The downlink data of the cell is sent on source.
Further, according to specified cell coverage area, the first downlink bandwidth of the cell is calculated, including：
Obtain the cell coverage area specified；Calculating sends the downlink data on the cell coverage area specified
Path loss；The first downlink bandwidth is calculated according to the path loss.
Further, being calculated the first downlink bandwidth according to the path loss includes：Calculated according to below equation
The first downlink bandwidth BWTx：
Wherein, the NumpPort number, the Num for the cellscIt is each RB of downlink data to be sent
On subcarrier number, the RRUpwrSpecified transmission power, the ρ for the cellAIt is first kind service symbol
Deviant, the ρ relative to reference signal powerBFor Equations of The Second Kind service symbol relative to reference signal power deviant,
The reference signal power RSpwr=RSRPmin+ PL, wherein, the RSRPminReceived for cell is minimum level,
The PL is the path loss for sending the downlink data.
Further, the downlink data that the cell is sent in the frequency domain resource of the first downlink bandwidth includes：
Whether the first downlink bandwidth is judged more than or equal to minimum bandwidth constraints, wherein, the minimum bandwidth
Constraints includes the bandwidth shared by Physical Broadcast Channel PBCH；It is more than or equal to most small band in the transmitted bandwidth
During constraints wide, the downlink data of the cell is sent on the band resource of the first downlink bandwidth.
Further, before the downlink data for sending the cell on the band resource of the first downlink bandwidth,
Methods described also includes：Judge whether the downlink data includes broadcast data and user data simultaneously；In the lower line number
It is preferential from the band resource to distribute described for sending during according to including the broadcast data and the user data simultaneously
The first band resource of broadcast data；After the completion of the first band resource allocation, from the residue money of the band resource
The second band resource for sending the user data is distributed in source.
Further, the downlink data packet that the cell is sent on the band resource of the first downlink bandwidth
Include：Determine the corresponding RB of the first downlink bandwidth in specified Resource Block RB；According to a RB,
The resource bitmap of the band resource is initialized, wherein, a pair of the bit of the resource bitmap and the specified RB 1
Should, the value of the bit is used to indicate：Whether the corresponding RB of the bit is a RB, described first
Whether RB is occupied, and takes the type of service of the downlink data of a RB；According to the resource bitmap and
The type of service, distributes to the downlink data, and update the resource according to the result of distribution by a RB
Bitmap；The downlink data of correspondence type of service is sent on a RB.
According to another aspect of the present invention, there is provided a kind of dispensing device of cell downlink data, including：Computing module,
For according to the cell coverage area specified, calculating the first downlink bandwidth of the cell；Sending module, for
The downlink data of the cell is sent on the band resource of the first downlink bandwidth.
Further, the computing module includes：Acquiring unit, for obtaining the cell coverage area specified；The
One computing unit, the path loss of the downlink data is sent for calculating on the cell coverage area specified；Second meter
Unit is calculated, for being calculated the first downlink bandwidth according to the path loss.
Further, second computing unit is used to calculate the first downlink bandwidth BW according to below equationTx：
Wherein, the NumpPort number, the Num for the cellscIt is each RB of downlink data to be sent
On subcarrier number, the RRUpwrSpecified transmission power, the ρ for the cellAIt is first kind service symbol
Deviant, the ρ relative to reference signal powerBFor Equations of The Second Kind service symbol relative to reference signal power deviant,
The reference signal power RSpwr=RSRPmin+ PL, wherein, the RSRPminReceived for cell is minimum level,
The PL is the path loss for sending the downlink data.
Further, the sending module also includes：Judging unit, for whether judging the first downlink bandwidth
More than or equal to minimum bandwidth constraints, wherein, the minimum bandwidth constraints includes Physical Broadcast Channel PBCH
Shared bandwidth；Determining unit, for the transmitted bandwidth be more than or equal to minimum bandwidth constraints when,
The downlink data of the cell is sent on the band resource of the first downlink bandwidth.
Further, described device also includes：Judge module, for the sending module in the first downlink band
Before the downlink data of the cell is sent on band resource wide, judge whether the downlink data includes broadcast number simultaneously
According to and user data；First distribute module, for including the broadcast data and the user simultaneously in the downlink data
During data, the preferential first band resource distributed for sending the broadcast data from the band resource；Second distribution
Module, for after the completion of the first band resource allocation, being distributed for sending out from the surplus resources of the band resource
Send the second band resource of the user data.
Further, the sending module also includes：Selected unit, in specified Resource Block RB selected described the
The corresponding RB of one descending transmitted bandwidth；Initialization unit, for according to a RB, initializing the frequency band
The resource bitmap of resource, wherein, the bit of the resource bitmap is corresponded with the specified RB, the bit
Value be used for indicate：Whether the corresponding RB of the bit is a RB, and whether a RB is occupied,
And take the type of service of the downlink data of a RB；Processing unit, for according to the resource bitmap and institute
Type of service is stated, a RB downlink data is distributed into, and the resource-niche is updated according to the result of distribution
Figure；Transmitting element, the downlink data for sending correspondence type of service on a RB.
By the present invention, using according to the cell coverage area specified, the first downlink bandwidth of the cell is calculated；
The downlink data of the cell is sent on the band resource of the first downlink bandwidth, is not changing bandwidth of cell ginseng
On the premise of number, cell coverage area is increased according to actual needs, calculate the first descending hair of current area coverage
Bandwidth is penetrated, by sending downlink data on the band resource for limited power resource being focused on the first downlink bandwidth,
The transmission power of unit bandwidth is increased, so as to there is provided a kind of method for increasing cell coverage area, solve related skill
Caused RRU costs when by way of reducing the protocol bandwidth that RRU is supported to increase cell coverage area in art
Increase and the inflexible problem of transmitted bandwidth.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention
Schematic description and description be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the method flow diagram of the transmission of cell downlink data according to embodiments of the present invention；
Fig. 2 is the structured flowchart of the dispensing device of cell downlink data according to embodiments of the present invention；
Fig. 3 is the alternative construction block diagram one of the dispensing device of cell downlink data according to embodiments of the present invention；
Fig. 4 is the alternative construction block diagram two of the dispensing device of cell downlink data according to embodiments of the present invention；
Fig. 5 is the alternative construction block diagram three of the dispensing device of cell downlink data according to embodiments of the present invention；
Fig. 6 be cell downlink data according to embodiments of the present invention dispensing device in sending module structured flowchart；
Fig. 7 is the transmission system schematic of the cell downlink data according to alternative embodiment of the present invention；
Fig. 8 is the workflow diagram of the parameter management module according to alternative embodiment of the present invention；
Fig. 9 is the workflow diagram of the band resource management module according to alternative embodiment of the present invention；
Figure 10 a, Figure 10 b, Figure 10 c are to mark schematic diagram according to the band resource bitmap of alternative embodiment of the present invention.
Specific embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing
Etc. being for distinguishing similar object, without for describing specific order or precedence.
A kind of sending method of cell downlink data is provided in the present embodiment, and Fig. 1 is according to embodiments of the present invention small
The method flow diagram of the transmission of area's downlink data, as shown in figure 1, the flow comprises the following steps：
Step S102, according to specified cell coverage area, calculates the first downlink bandwidth of cell；
Step S104, sends the downlink data of cell on the band resource of the first downlink bandwidth.
Optionally, the cell coverage area specified can determine according to user's setting, can be by the current covering model of cell
Enclose and be enlarged or reduce, when the current coverage of cell is expanded to the cell coverage area specified, in order to descending
Data can be sent out and outrange, in specified cell coverage area, because the present embodiment is without the concern for the bandwidth of cell
Parameter, the available power resource of cell is constant, by reducing the downlink bandwidth of cell, is distributed on unit bandwidth
Transmission power will increase, can just send out and outrange when downlink data is launched using the band resource of bandwidth so that
Originally the user outside cell coverage area also has access into, obtains cell serves.Optionally, downlink data can be with
It is broadcast data, user data.
By the present embodiment, using according to the cell coverage area specified, the first downlink bandwidth of cell is calculated；
The downlink data of cell is sent on the band resource of the first downlink bandwidth, by the present embodiment, is not changing small zone
On the premise of parameter wide, cell coverage area is increased according to actual needs, calculated under the first of current area coverage
Row transmitted bandwidth, by sending lower line number on the band resource for limited power resource being focused on the first downlink bandwidth
According to, increase the transmission power of unit bandwidth so that there is provided it is a kind of increase cell coverage area method, solve phase
Caused RRU when by way of reducing the protocol bandwidth that RRU is supported to increase cell coverage area in the technology of pass
Cost increases and the inflexible problem of transmitted bandwidth.
In the optional embodiment according to the present embodiment, first according to specified cell coverage area calculating cell is descending
Transmitted bandwidth, including：
S11, the cell coverage area that acquisition is specified；
S12, calculates the path loss that downlink data is sent on specified cell coverage area；
S13, the first downlink bandwidth is calculated according to path loss.
Optionally, during the first downlink bandwidth of specific calculating, can be derived and be calculated by procedure below：
The present embodiment can be applied in the scene of LTE network, under LTE scenes, each downstream Quadrature frequency division multiplexing
The transmission power of (Orthogonal Frequency Division Multiplexing, referred to as OFDM) symbol all can not
Specified transmission power more than cell RRU.This alternative embodiment is small by the specified transmission power of RRU and acquisition
Area's coverage draws available first downlink bandwidth.It is descending according to the information category that downlink bandwidth is carried
OFDM symbol can be divided into service symbol and the major class of controlling symbols two.
Optionally, whether reference information can be included according to service symbol, service symbol is divided into the first kind (containing with reference to letter
Number) symbol and Equations of The Second Kind (being free of reference signal) symbol.The transmission power of service symbol is by reference signal power RSpwr、
Reference signal number Num on unit resource block (Resource Block, referred to as RB)p, first kind symbol it is relative
In the offset ρ of reference signal powerAOr Equations of The Second Kind symbol is relative to the offset ρ of reference signal powerB, per the son on RB
Variable number NumscAnd emission maximum bandwidth BWTx(unit is RB) determines.The maximum transmission power of service symbol
Txmax_pwrDepending on the first kind and Equations of The Second Kind symbol maximum transmission power therebetween, correspondence computing formula is as follows：
Formula restriction relation is, the specified transmitting work(of the maximum transmission power no more than cell RRU of service symbol
Rate RRUpwr, i.e.,：RRUpwr≥Txmax_pwr, in RRUpwr=Txmax_pwrWhen, can push over out under first
Row transmitted bandwidth：
In the formula for pushing over out the first downlink bandwidth, except reference signal power RSpwrOutside other specification be all
It is known, NumpDetermined by cell port number, NumscIt is the subcarrier on each RB of downlink data to be sent
Number, ρADeviant, ρ for first kind service symbol relative to reference signal powerBIt is Equations of The Second Kind service symbol relative to ginseng
Examine the deviant of signal power, ρAAnd ρBCan be configured according to user input data, and reference signal power can be by cell
Minimum receives level RSRPminDrawn with path loss PL (Path Loss) addition calculation：That is, RSpwr=RSRPmin+PL。
Cell is minimum to receive level RSRPminIt is the known parameters of cell, optionally, path loss PL can be according to given cell
Coverage draws by link budget.Actual minimum transmitted bandwidth BWTx_minPhysical Broadcast Channel can not be less than
The number of the RB shared by (Physical Broadcast Channel, referred to as PBCH), further according to above-mentioned derivation relation,
The cell maximum coverage range that cell RRU rated power can be supported can just be drawn.
In the present embodiment, specified transmission power of the power of controlling symbols no more than RRU.Controlling symbols are located at LTE
Preceding several symbols of running time-frequency resource, for carrying Physical Downlink Control Channel (Physical Downlink Control
Channel, referred to as PDCCH) bit information.Because the bit of PDCCH is discrete to be distributed in all command characters
On number, particular location can be without setting.In order to prevent controlling symbols power more than RRU rated power, will can control
The number of symbol processed is set as maximum, it is ensured that the PDCCH bit numbers in each controlling symbols are in a balanced way.
In the optional embodiment according to the present embodiment, cell is sent in the frequency domain resource of the first downlink bandwidth
Downlink data includes：
Whether S21, judge the first downlink bandwidth more than or equal to minimum bandwidth constraints, wherein, most small band
Constraints wide includes the bandwidth shared by Physical Broadcast Channel PBCH；
S22, when transmitted bandwidth is more than or equal to minimum bandwidth constraints, in the frequency band of the first downlink bandwidth
The downlink data of cell is sent in resource.
Under the scene of LTE network, PBCH information may be located at the centre position of protocol bandwidth, can be by emission maximum
The band resource position limitation of bandwidth is included the band resource position of PBCH to the centre position of protocol bandwidth.
So that it is guaranteed that have the subframe of PBCH when data are transmitted, be not in power overflow and cannot transmitting broadcast information.This
Embodiment is calculated under given cell coverage area by the rated power of RRU and the restriction relation of actual emission power
Emission maximum bandwidth, and limit service data only in actual transmission bandwidth send, do not changing the specified transmittings of RRU
On the premise of power and protocol bandwidth parameter, the purpose for expanding cell coverage area has been reached.
According to above-mentioned optional implementation method, when downlink data includes broadcast data and user data simultaneously, frequency band is reserved
The priority of resource is different, the band resource of broadcast data can be preferentially reserved, specifically, in the first downlink bandwidth
Band resource on send cell downlink data before, also include：
S31, judges whether downlink data includes broadcast data and user data simultaneously；
S32, when downlink data includes broadcast data and user data simultaneously, preferentially distributes for sending out from band resource
Send the first band resource of broadcast data；
S33, after the completion of first band resource allocation, distributes for sending number of users from the surplus resources of band resource
According to second band resource.
There are multiple RB for bearing downlink data in the optional embodiment according to the present embodiment, on band resource,
Can be used resource bitmap to manage band resource, the lower line number of cell is sent on the band resource of the first downlink bandwidth
According to including：
S41, the corresponding RB of the first downlink bandwidth is determined in specified Resource Block RB；Optionally, this is specified
Resource Block RB is all of RB on the band resource of cell available bandwidth；
S42, according to a RB, initializes the resource bitmap of band resource, wherein, the bit of resource bitmap with specify
RB is corresponded, and the value of bit is used to indicate：Whether the corresponding RB of bit is a RB, and whether a RB
It is occupied, and the type of service for taking the downlink data of a RB；
S43, according to resource bitmap and type of service, downlink data is distributed to by a RB, and according to the result of distribution
Update resource bitmap；
S44, sends the downlink data of correspondence type of service on a RB.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-described embodiment
Method can add the mode of required general hardware platform by software to realize, naturally it is also possible to by hardware, but a lot
In the case of the former be more preferably implementation method.Based on such understanding, technical scheme is substantially in other words to existing
The part for having technology to contribute can be embodied in the form of software product, and the computer software product is stored at one
In storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions are used to so that a station terminal equipment (can
Being mobile phone, computer, server, or network equipment etc.) method that performs each embodiment of the invention.
A kind of dispensing device of cell downlink data is additionally provided in the present embodiment, and the device can set cell base station
On RRU, the device is used to realize above-described embodiment and preferred embodiment, has carried out repeating no more for explanation.
As used below, term " module " can realize the combination of the software and/or hardware of predetermined function.Although following
Device described by embodiment is preferably realized with software, but hardware, or the combination of software and hardware realization
May and be contemplated.
Fig. 2 is the structured flowchart of the dispensing device of cell downlink data according to embodiments of the present invention, as shown in Fig. 2 should
Device includes：
Computing module 20, for according to the cell coverage area specified, calculating the first downlink bandwidth of cell；
Sending module 22, the downlink data for sending cell on the band resource of the first downlink bandwidth.
Fig. 3 is the alternative construction block diagram one of the dispensing device of cell downlink data according to embodiments of the present invention, such as Fig. 3 institutes
Show, in addition to including all modules shown in Fig. 2, computing module 20 also includes the device：
Acquiring unit 30, for obtaining the cell coverage area specified；
First computing unit 32, the path loss of downlink data is sent for calculating on specified cell coverage area；
Second computing unit 34, for being calculated the first downlink bandwidth according to path loss.
Optionally, the second computing unit 34 can be used for calculating the first downlink bandwidth BW according to below equationTx：
Wherein, NumpPort number, Num for cellscIt is the subcarrier on each RB of downlink data to be sent
Number, RRUpwrIt is specified transmission power, the ρ of cellASkew for first kind service symbol relative to reference signal power
Value, ρBDeviant, reference signal power RS for Equations of The Second Kind service symbol relative to reference signal powerpwr=
RSRPmin+ PL, wherein, RSRPminIt is the path loss for sending downlink data that level, PL are received for cell is minimum.
Fig. 4 is the alternative construction block diagram two of the dispensing device of cell downlink data according to embodiments of the present invention, such as Fig. 4 institutes
Show, in addition to including all modules shown in Fig. 2, sending module 22 also includes the device：
Judging unit 40, for whether judging the first downlink bandwidth more than or equal to minimum bandwidth constraints, its
In, minimum bandwidth constraints includes the bandwidth shared by Physical Broadcast Channel PBCH；
Determining unit 42, for when transmitted bandwidth is more than or equal to minimum bandwidth constraints, in the first downlink
The downlink data of cell is sent on the band resource of bandwidth.
Fig. 5 is the alternative construction block diagram three of the dispensing device of cell downlink data according to embodiments of the present invention, such as Fig. 5 institutes
Show, in addition to including all modules shown in Fig. 2, device also includes the device：
Judge module 50, the downlink data of cell is sent for sending module on the band resource of the first downlink bandwidth
Before, judge whether downlink data includes broadcast data and user data simultaneously；
First distribute module 52, for when downlink data includes broadcast data and user data simultaneously, from band resource
The preferential first band resource distributed for sending broadcast data；
Second distribute module 54, for after the completion of first band resource allocation, being distributed from the surplus resources of band resource
Second band resource for sending user data.
Fig. 6 be cell downlink data according to embodiments of the present invention dispensing device in sending module structured flowchart, such as scheme
Shown in 6, sending module 22 also includes：
Selected unit 60, for selecting the corresponding RB of the first downlink bandwidth in specified Resource Block RB；
Initialization unit 62, for according to a RB, initializing the resource bitmap of band resource, wherein, resource bitmap
Bit corresponded with specified RB, the value of bit is used to indicate：Whether the corresponding RB of bit is a RB,
Whether the first RB is occupied, and takes the type of service of the downlink data of a RB；
Processing unit 64, for according to resource bitmap and type of service, downlink data is distributed to by a RB, and according to
The result of distribution updates resource bitmap；
Transmitting element 66, the downlink data for sending correspondence type of service on a RB.
With reference to being described in detail to the solution of the present invention according to an alternative embodiment of the invention：
The present embodiment is used on the premise of RRU transmission powers and configured bandwidth is not changed, there is provided one kind is by under adjustment
Row actual transmission bandwidth (corresponds to the first downlink bandwidth), and limited power resource is focused on partial-band,
Increase cell coverage area.
The scheme of the present embodiment includes：
S51, under LTE, the specified hair of the actual emission power no more than RRU of each descending OFDM symbol
Penetrate power.Actual transmission bandwidth is drawn by the specified transmission power and given cell coverage area of RRU.According to
The information category of carrying, descending OFDM symbol can be divided into service symbol and the major class of controlling symbols two：Service symbol can
To be divided into the first kind (containing reference signal) and Equations of The Second Kind (without reference signal) symbol.The transmission power of service symbol by
Reference signal power RSpwr, per the reference signal number Num on RB (Resource Block Resource Block)p, first
Offset ρ of the class symbol relative to reference signal powerAOr Equations of The Second Kind symbol is relative to the offset ρ of reference signal powerB, it is every
Subcarrier number Num on RBscAnd actual transmission bandwidth BWTx(unit is RB) determines.The maximum hair of service symbol
Penetrate power Txmax_pwrDepending on the first kind and Equations of The Second Kind symbol maximum transmission power therebetween, correspondence computing formula
It is as follows：
Restriction relation is, the specified transmission power RRU of the maximum transmission power no more than RRU of service symbolpwr.I.e.：
RRUpwr≥Txmax_pwr；
In RRUpwr=Txmax_pwrWhen,
Actual transmission band can be gone out with inverse a width of：
In formula, except reference signal power RSpwrOutside other specification be all known, NumpDetermined by cell port number
It is fixed, NumscIt is the subcarrier number on each RB of downlink data to be sent, optionally, the son load on unit RB
Ripple number is 12, ρAAnd ρBIt is configurable, and reference signal power can receive level RSRP by cell is minimumminAnd path loss
PL (Path Loss path losses) and calculate：
RSpwr=RSRPmin+ PL,
The minimum level that receives of cell is known parameters, and path loss can draw according to given cell coverage area by link budget.
Meanwhile, actual minimum transmitted bandwidth BWTx_minCan not be less than shared by PBCH (Physical Broadcast Channel)
RB (Resource Block) number, further according to above-mentioned derivation relation, it is possible to show that RRU rated power can be supported
Cell maximum coverage range.
The same specified transmission power no more than RRU of the power of controlling symbols.Controlling symbols are located in the present embodiment
Preceding several symbols of LTE running time-frequency resources, for carry PDCCH (Physical Downlink Control Channel,
Physical Downlink Control Channel) bit information.Due to the bit of PDCCH be it is discrete be distributed in all controlling symbols,
Particular location can not be manually set.In order to prevent controlling symbols power more than RRU rated power, can be by controlling symbols
Number be set as maximum, it is ensured that the PDCCH bit numbers in each controlling symbols are in a balanced way.
S52, PBCH (Physical Broadcast Channel) information of LTE is positioned at protocol bandwidth in the present embodiment
Centre position.Therefore, in the present embodiment by the band resource position limitation of actual transmission bandwidth to protocol bandwidth
Between position, the band resource position of PBCH is included.So that it is guaranteed that have the subframe of PBCH when data are transmitted,
It is not in power overflow.Whole protocol bandwidth is divided into bitmap in units of RB in the present embodiment, labeled as 1
Representing the RB can use, conversely, for 0 expression the RB prohibit the use of.
According to the present embodiment, by rated power and the restriction relation of actual emission power of RRU, calculate given small
Actual transmission bandwidth under area's coverage, and the only transmission in actual transmission bandwidth of limit service data, are not changing
On the premise of the specified transmission powers of RRU and protocol bandwidth parameter, the purpose for expanding cell coverage area has been reached.
Fig. 7 is the transmission system schematic of the cell downlink data according to alternative embodiment of the present invention, can be in the base of base station
Tape handling unit (BBU：Building Base band Unit) side implementation, as shown in fig. 7, comprises：Parameter management mould
Block 70, band resource management module 72, wherein
Parameter management module 70, is managed, and determine actual transmission bandwidth for pair parameter that can be set；
Band resource management module 72, for determining that line frequency is gone forward side by side with resource allocation in actual transmission band resource position；
Fig. 8 is the workflow diagram of the parameter management module according to alternative embodiment of the present invention, as shown in figure 8, including：
S801, setting |input paramete, including path loss (being drawn by link budget according to given cell coverage area),
RRU rated power, cell are minimum to receive level, cell port number, ρA、ρBValue, concurrently set controlling symbols
Number is the maximum that agreement specifies.
Whether S802, judges setting value in the range of restriction, if gone beyond the scope, points out parameter setting mistake, and provide
Reasonable value scope.
S803, actual transmission bandwidth is calculated according to setup parameter：
S804, judges whether transmitted bandwidth meets pre-conditioned, if the actual transmission bandwidth for calculating is unsatisfactory for most small band
Constraints wide, i.e., less than the bandwidth of PBCH channel occupancies, point out parameter setting unreasonable；If actual transmission bandwidth
In the reasonable scope, then S805 is performed；
The parameter, is sent to band resource management module 72 by S805.
Fig. 9 is the workflow diagram of the band resource management module according to alternative embodiment of the present invention, as shown in figure 9, bag
Include：
S901, initial cell band resource bitmap BITMAPCell, one bit position of each RB correspondences：
A. from bandwidth centre position to both sides symmetric extension, comprising PBCH positions, to be calculated until RB numbers reach module 1
The actual transmission bandwidth for going out；
B. the RB corresponding bits position mark of actual transmission bandwidth is 1, and representing RB can be used, other RB marks
It is 0, representing RB cannot be used, the initial RB positions for recording actual transmission bandwidth are RBStart。
Figure 10 a, Figure 10 b, Figure 10 c are to mark schematic diagram according to the band resource bitmap of alternative embodiment of the present invention, such as
Shown in Figure 10 a, Figure 10 b, Figure 10 c, in the present embodiment, backstage configured bandwidth is 10M, and 10M bandwidth is in frequency band
50 RB of correspondence, are cell as shown in Figure 10 a by a width of 20 RB of the actual transmission band for calculating in resource
Band resource bitmap BITMAPCell, the 16th RB to the 35th RB of configured bandwidth is the RB of actual transmission bandwidth,
It is altogether 20, subdistrict frequency band resource bitmap BITMAPCellIn, RBStart=16.
S902, judges that present sub-frame will send with the presence or absence of PBCH, if it is present performing S903；
S903,0 is labeled as by the bit position of PBCH correspondences RB, is represented correspondence RB and is taken by PBCH；
S904, is each user distribution band resource, and distribution method includes：
A. for each user safeguards that has been distributed a resource bitmap BITMAP respectivelyUE, record the RB moneys of the actual occupancy of user
Source, one bit position of each RB correspondences；
B. from RBStartStart, judge the corresponding bit values of each RB, if 0, then the RB is distributed into UE,
By BITMAPCellThe position mark is 2, and expression has been distributed；Meanwhile, by BITMAPUECorresponding position mark is 1,
Represent the CU RB of this position.
As shown in fig. lob, it is the subdistrict frequency band resource bitmap BITMAP after distributionCell, it is that first user is assigned with it
In 10 RB, totally 10 RB position marks are 2 for the 16th RB to the 25th RB, as shown in figure l0c, are
The frequency resource bitmap BITMAP of userUE, totally 10 RB position marks are 1 for the 16th RB to the 25th RB.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong
Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or, above-mentioned module distinguishes position
In multiple processors.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can
To be arranged to storage for performing the program code of following steps：
S1, according to specified cell coverage area, calculates the first downlink bandwidth of the cell；
S2, sends the downlink data of the cell on the band resource of the first downlink bandwidth.
Alternatively, in the present embodiment, above-mentioned storage medium can be included but is not limited to：USB flash disk, read-only storage (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk,
Magnetic disc or CD etc. are various can be with the medium of store program codes.
Alternatively, in the present embodiment, processor performs what basis was specified according to the program code stored in storage medium
Cell coverage area, calculates the first downlink bandwidth of the cell；
Alternatively, in the present embodiment, processor is performed described first according to the program code stored in storage medium
The downlink data of the cell is sent on the band resource of downlink bandwidth.
Alternatively, the specific example in the present embodiment may be referred to showing described in above-described embodiment and optional embodiment
Example, the present embodiment will not be repeated here.
Obviously, those skilled in the art should be understood that above-mentioned of the invention each module or each step can be with general
Computing device realizes that they can be concentrated on single computing device, or is distributed in multiple computing devices and is constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to by they
Storage is performed by computing device in the storage device, and in some cases, can be held with different from order herein
The shown or described step of row, or they are fabricated to each integrated circuit modules respectively, or will be many in them
Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware
Combined with software.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the technology of this area
For personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made it is any
Modification, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (12)
1. a kind of sending method of cell downlink data, it is characterised in that including：
According to specified cell coverage area, the first downlink bandwidth of the cell is calculated；
The downlink data of the cell is sent on the band resource of the first downlink bandwidth.
2. method according to claim 1, it is characterised in that according to specified cell coverage area, calculates described small
The first downlink bandwidth in area, including：
Obtain the cell coverage area specified；
Calculating sends the path loss of the downlink data on the cell coverage area specified；
The first downlink bandwidth is calculated according to the path loss.
3. method according to claim 2, it is characterised in that the described first descending hair is calculated according to the path loss
Penetrating bandwidth includes：
The first downlink bandwidth BW is calculated according to below equationTx：
Wherein, the NumpPort number, the Num for the cellscFor downlink data to be sent each
Subcarrier number on Resource Block RB, the RRUpwrSpecified transmission power, the ρ for the cellAIt is
Deviant of the one class service symbol relative to reference signal power, the ρBIt is Equations of The Second Kind service symbol relative to reference
The deviant of signal power, the reference signal power RSpwr=RSRPmin+ PL, wherein, it is described
RSRPminIt is the path loss for sending the downlink data that level, the PL are received for cell is minimum.
4. method according to claim 1, it is characterised in that in the frequency domain resource of the first downlink bandwidth
The downlink data for sending the cell includes：
Whether the first downlink bandwidth is judged more than or equal to minimum bandwidth constraints, wherein, it is described
Minimum bandwidth constraints includes the bandwidth shared by Physical Broadcast Channel PBCH；
When the transmitted bandwidth is more than or equal to minimum bandwidth constraints, in the first downlink bandwidth
Band resource on send the downlink data of the cell.
5. method according to claim 1, it is characterised in that on the band resource of the first downlink bandwidth
Before sending the downlink data of the cell, methods described also includes：
Judge whether the downlink data includes broadcast data and user data simultaneously；
When the downlink data includes the broadcast data and the user data simultaneously, from the band resource
The preferential first band resource distributed for sending the broadcast data；
After the completion of the first band resource allocation, distributed for sending from the surplus resources of the band resource
The second band resource of the user data.
6. the method according to claim 1 to 5 any one, it is characterised in that described in first downlink
The downlink data that the cell is sent on the band resource of bandwidth includes：
Determine the corresponding RB of the first downlink bandwidth in specified Resource Block RB；
According to a RB, the resource bitmap of the band resource is initialized, wherein, the resource bitmap
Bit is corresponded with the specified RB, and the value of the bit is used to indicate：The corresponding RB of the bit
Whether it is a RB, whether a RB is occupied, and takes the downlink data of a RB
Type of service；
According to the resource bitmap and the type of service, a RB is distributed into the downlink data, and
Result according to distribution updates the resource bitmap；
The downlink data of correspondence type of service is sent on a RB.
7. a kind of dispensing device of cell downlink data, it is characterised in that including：
Computing module, for according to the cell coverage area specified, calculating the first downlink bandwidth of the cell；
Sending module, the lower line number for sending the cell on the band resource of the first downlink bandwidth
According to.
8. device according to claim 7, it is characterised in that the computing module includes：
Acquiring unit, for obtaining the cell coverage area specified；
First computing unit, the road of the downlink data is sent for calculating on the cell coverage area specified
Damage；
Second computing unit, for being calculated the first downlink bandwidth according to the path loss.
9. device according to claim 8, it is characterised in that second computing unit is based on according to below equation
Calculate the first downlink bandwidth BWTx：
Wherein, the NumpPort number, the Num for the cellscFor downlink data to be sent each
Subcarrier number on RB, the RRUpwrSpecified transmission power, the ρ for the cellAIt is first kind industry
Deviant of the business symbol relative to reference signal power, the ρBIt is Equations of The Second Kind service symbol relative to reference signal work(
The deviant of rate, the reference signal power RSpwr=RSPRmin+ PL, wherein, the RSRPminFor small
The minimum level, the PL of receiving in area is the path loss for sending the downlink data.
10. device according to claim 7, it is characterised in that the sending module also includes：
Judging unit, for judging the first downlink bandwidth whether more than or equal to minimum bandwidth constraint bar
Part, wherein, the minimum bandwidth constraints includes the bandwidth shared by Physical Broadcast Channel PBCH；
Determining unit, for when the transmitted bandwidth is more than or equal to minimum bandwidth constraints, described the
The downlink data of the cell is sent on the band resource of one descending transmitted bandwidth.
11. devices according to claim 7, it is characterised in that described device also includes：
Judge module, sends described for the sending module on the band resource of the first downlink bandwidth
Before the downlink data of cell, judge whether the downlink data includes broadcast data and user data simultaneously；
First distribute module, for the downlink data simultaneously include the broadcast data and the user data when,
The preferential first band resource distributed for sending the broadcast data from the band resource；
Second distribute module, for after the completion of the first band resource allocation, from the residue of the band resource
The second band resource for sending the user data is distributed in resource.
12. device according to claim 7 to 11 any one, it is characterised in that the sending module also includes：
Selected unit, for selecting the corresponding RB of the first downlink bandwidth in specified Resource Block RB；
Initialization unit, for according to a RB, initializing the resource bitmap of the band resource, wherein,
The bit of the resource bitmap is corresponded with the specified RB, and the value of the bit is used to indicate：It is described
Whether the corresponding RB of bit is a RB, and whether a RB is occupied, and takes described the
The type of service of the downlink data of one RB；
Processing unit, for according to the resource bitmap and the type of service, a RB being distributed into institute
Downlink data is stated, and the resource bitmap is updated according to the result of distribution；
Transmitting element, the downlink data for sending correspondence type of service on a RB.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998766.8A CN106922003A (en) | 2015-12-28 | 2015-12-28 | The sending method and device of cell downlink data |
| PCT/CN2016/093992 WO2017113801A1 (en) | 2015-12-28 | 2016-08-08 | Method and device for transmitting downlink data of cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998766.8A CN106922003A (en) | 2015-12-28 | 2015-12-28 | The sending method and device of cell downlink data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106922003A true CN106922003A (en) | 2017-07-04 |
Family
ID=59224399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510998766.8A Pending CN106922003A (en) | 2015-12-28 | 2015-12-28 | The sending method and device of cell downlink data |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106922003A (en) |
| WO (1) | WO2017113801A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484203A (en) * | 2017-07-24 | 2017-12-15 | 武汉虹信通信技术有限责任公司 | A kind of data transmission method for being used to support spread bandwidth |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2360975A1 (en) * | 2010-02-12 | 2011-08-24 | Alcatel Lucent | Power savings in communications cells |
| CN102177756A (en) * | 2008-08-11 | 2011-09-07 | 北方电讯网络有限公司 | Sub-channelization with power boost |
| CN102244631A (en) * | 2010-05-11 | 2011-11-16 | 华为技术有限公司 | Central subcarrier configuring method and device |
| WO2013167202A1 (en) * | 2012-05-11 | 2013-11-14 | Nokia Siemens Networks Oy | Adapting a system bandwidth to be used by a user equipment for an uplink communication channel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030909B (en) * | 2007-02-15 | 2010-05-26 | 华为技术有限公司 | Method for realizing and adjusting bandwidth asymmetric transmission bearing net and sided access network element |
| CN101990258A (en) * | 2010-11-01 | 2011-03-23 | 华为技术有限公司 | Method and device for reducing power consumption |
-
2015
- 2015-12-28 CN CN201510998766.8A patent/CN106922003A/en active Pending
-
2016
- 2016-08-08 WO PCT/CN2016/093992 patent/WO2017113801A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102177756A (en) * | 2008-08-11 | 2011-09-07 | 北方电讯网络有限公司 | Sub-channelization with power boost |
| EP2360975A1 (en) * | 2010-02-12 | 2011-08-24 | Alcatel Lucent | Power savings in communications cells |
| CN102244631A (en) * | 2010-05-11 | 2011-11-16 | 华为技术有限公司 | Central subcarrier configuring method and device |
| WO2013167202A1 (en) * | 2012-05-11 | 2013-11-14 | Nokia Siemens Networks Oy | Adapting a system bandwidth to be used by a user equipment for an uplink communication channel |
Non-Patent Citations (1)
| Title |
|---|
| 王祥国: "PA, PB参数调整对下载速率提升的应用", 《中国新通信》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484203A (en) * | 2017-07-24 | 2017-12-15 | 武汉虹信通信技术有限责任公司 | A kind of data transmission method for being used to support spread bandwidth |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017113801A1 (en) | 2017-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102395132B (en) | The radio resource allocation mechanism improved | |
| Tian et al. | QoS-constrained medium access probability optimization in wireless interference-limited networks | |
| CN106416117A (en) | Group carrier scheduling for unlicensed long term evolution network | |
| CN107251597A (en) | Resource allocation for LC MTC UE is designed | |
| EP2941912B1 (en) | Spectrum management system and method | |
| CN102301793A (en) | Apparatus and method for access stratum management of wireless devices | |
| CN109150785A (en) | A kind of method and device of determining resource block group size | |
| CN104661296B (en) | The device and method for determining the transmission power of user equipment | |
| CN106162888A (en) | PUCCH resource collocation method in carrier aggregation and equipment thereof | |
| CN107078873A (en) | System and method for distributing tone between the user of wireless communication system | |
| CN105007210A (en) | Network virtualization frame in long term evolution system and resource blocks allocation method | |
| CN106888506A (en) | A kind of minizone of LTE is disturbed degree information and determines method and system | |
| CN109391355A (en) | Method, chip and the system of wireless communication | |
| CN107484180B (en) | Resource allocation method based on D2D communication in very high frequency band | |
| CN113709885B (en) | Multi-service network resource allocation method | |
| CN108886690B (en) | Method, equipment and system for indicating resource allocation | |
| Gang et al. | Optimal resource sharing in multi-tenant 5G networks | |
| CN105992221A (en) | Frequency hopping method and device | |
| Sopin et al. | Evaluating a case of downlink uplink decoupling using queuing system with random requirements | |
| CN104349473B (en) | A kind of time division duplex uplink-downlink configuration information transferring method and device | |
| CN106304380A (en) | The indicating means of a kind of scheduling of resource and device | |
| Ferreira et al. | Power and delay optimization based uplink resource allocation for wireless networks with device-to-device communications | |
| CN106922003A (en) | The sending method and device of cell downlink data | |
| CN106604404B (en) | Service scheduling method and device | |
| CN106416407B (en) | For the method and system of uplink transmission distribution radio resource in cellular network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170704 |