CN107623648A - A kind of business datum sending method and the first physical area - Google Patents
A kind of business datum sending method and the first physical area Download PDFInfo
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Abstract
A kind of business datum sending method and the first physical area, to solve the problems, such as that the channel of the channel of the downlink service data experience of independent scheduling UE receptions and the experience of the common pilot signal for demodulating is inconsistent.Method includes：First physical area determines at least one second physical area；First physical area determines itself descending channel information of each second physical area to independent scheduling UE into independent scheduling UE descending channel information and at least one second physical area；First physical area determines the down channel compensation rate of each second physical area according to the descending channel information of itself and the descending channel information of each second physical area respectively；First physical area compensates according to the down channel compensation rate of each second physical area to the down channel of own service data, obtains the down channel equivalent with the down channel of common pilot signal；First physical area sends business datum on equivalent down channel to independent scheduling UE.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of business datum sending method and the first physical area.
Background technology
Adaptive Single Frequency Network (Adaptive Single Frequency Network, ASFN) can effectively solve the problem that side
The problem of performance caused by edge user is disturbed by adjacent area reduces, the satisfaction of whole network users can be obviously improved, meet that system is held
Amount demand.
All physical areas (physical Cell, pCell) in ASFN use identical logic district (Logical
Cell) identify, serviced using identical frequency for user equipment (User Equipment, UE), each physical area includes one
Individual or multiple remote radio unit (RRU)s (Remote Radio Unit, RRU).The signal strength of different physical areas is received based on UE
Difference, it is combined dispatching UE and independent scheduling UE by UE points.Combined dispatching UE is in the imbricate region of multiple physical areas,
Have for the UE physical areas serviced multiple.Independent scheduling UE is near some physical area, and the UE receives other physics
The signal of cell is weaker, then the physical area for UE services is a most strong physical area of UE reception signals.Independent scheduling
The isolation that UE is declined based on large scale, avoid disturbing between different physical areas, realize more UE spatial reuses, and then improve system
Capacity.
By taking ASFN as shown in Figure 1 operation principle schematic diagram as an example, UE1 and UE2 in Fig. 1 are combined dispatching UE, are
There are physical area 1 (pCell 1) and physical area 2 (pCell 2) in the physical area that UE1 provides service, and service is provided for UE2
There are physical area 1, physical area 2 and physical area 3 in physical area.UE3 and UE4 in Fig. 1 are independent scheduling UE, are carried for UE3
There is physical area 3 (pCell 3) for the physical area of service, have physical area 2 for the UE4 physical areas for providing service.
In ASFN, all physical areas use identical logical cell identity, and identical public affairs are sent on each physical area
Pilot signal altogether, such as cell reference signals (Cell-Specific Reference Single, CRS).Independent scheduling UE connects
A physical area of service is independently transmitted by being provided for it for the downlink service data of receipts, and that independently dispatches that UE receives public leading
Frequency signal is combined by multiple physical areas to be sent.Therefore it is independent to dispatch UE based on the common pilot signal of reception to downlink business number
According to being demodulated, the problem of channel and the inconsistent channel of common pilot signal experience of downlink service data experience be present.
The content of the invention
The embodiments of the invention provide a kind of business datum sending method and the first physical area, to solve independent scheduling
The problem of channel for the downlink service data experience that UE is received and the inconsistent channel of the common pilot signal experience for demodulating,
Improve independent scheduling UE demodulation ability.
In a first aspect, a kind of business datum sending method provided in an embodiment of the present invention, including：
First physical area determines at least one second physical area, and at least one second physical area includes causing
The down channel of business datum and the descending letter of common pilot signal be present in independent scheduling user's set UE traffic data demodulation
The physical area of road inconsistence problems, first physical area are the physical areas that service is provided for the independent scheduling UE,
First physical area and at least one second physical area use identical logical cell identity；
First physical area determines itself to the independent descending channel information for dispatching UE and described at least one
Descending channel information of each second physical area to the independent scheduling UE in second physical area；
First physical area is according under the descending channel information of itself and the described of each second physical area
Row channel information, the down channel compensation rate of each second physical area is determined respectively；
First physical area is according to the down channel compensation rate of each second physical area to own service number
According to down channel compensate, obtain the down channel equivalent with the down channel of the common pilot signal；
First physical area sends business datum on the equivalent down channel to the independent scheduling UE.
It is such because the channel of the independent scheduling UE downlink service data experience received is equivalent channel in the above method
It is consistent with the channel of the common pilot signal experience for demodulating to imitate channel, the common pilot signal for demodulation is by independence
What is sent combined at least one second physical area and the first physical area that the traffic data demodulation for dispatching UE has interference, because
This causes the channel of downlink service data experience and the letter of the experience of the common pilot signal for demodulating that independent scheduling UE is received
Road is consistent, and then improves independent scheduling UE demodulation ability.
In a kind of possible implementation, first physical area determines at least one second physical area, including：
The reference signal that first physical area determines itself to receive the detectable signal that the independent scheduling UE is sent connects
Power RSRP is received, and it is small using each physics in all physical areas of identity logic cell ID with first physical area
Area receives the RSRP for the detectable signal that the independent scheduling UE is sent；
First physical area calculates the RSRP of first physical area and each physical area respectively
RSRP difference, and above or equal at least one physical area corresponding to the difference of predetermined threshold value be defined as it is described extremely
Few second physical area.
So, the institute of identity logic cell ID can be used according to the RSRP of the first physical area and with the first physical area
There is the RSRP of each physical area in physical area, selection causes independent scheduling UE traffic data demodulation business datum to be present
At least one second physical area of the down channel inconsistence problems of down channel and common pilot signal, uses identity logic
The physical area joint of cell ID sends common pilot signal.
In a kind of possible implementation, first physical area is determined at least one second physical area
Each second physical area dispatches UE descending channel information to the independence, including：
First physical area obtains the up letter that the independent scheduling UE arrives each second physical area respectively
Road information；
First physical area is based on up-downgoing channel reciprocity principle, according to the independent scheduling UE is arrived respectively
The uplink channel information of each second physical area, estimation obtain the descending channel information of each second physical area.
Wherein, in the case where up-downgoing channel reciprocity principle is set up, down channel large scale can be declined and be estimated
Up channel large scale is declined, and down channel multipath fading is estimated into up channel multipath fading.
In a kind of possible implementation, first physical area is according to the descending channel information of itself and respectively
The descending channel information of individual second physical area, the down channel compensation of each second physical area is determined respectively
Amount, including：
First physical area passes through formulaDescribed in determining respectively
The down channel compensation rate of each second physical area, wherein, Δ represents the down channel compensation rate of second physical area,
L1Represent the down channel large scale decline that the descending channel information of first physical area includes, L2Represent second thing
The down channel large scale decline that the descending channel information of reason cell includes, H1Represent the down channel of first physical area
The down channel multipath fading that information includes, H2Represent the descending letter that the descending channel information of second physical area includes
Road multipath fading, ()HThe complex conjugate transposition computing of matrix is asked in expression, and (A ⊙ B) represents to seek the dot product of matrix A and matrix B
Computing.
In a kind of possible implementation, first physical area is descending according to each second physical area
Channel compensation amount compensates to the down channel of own service data, obtain with the down channel of the common pilot signal etc.
The down channel of effect, including：
First physical area passes through formula A=L1(I+Δ1+Δ2+...+Δn)H1To the descending of own service data
Channel compensates, and obtains the down channel equivalent with the down channel of the common pilot signal, wherein, A represents described etc.
Down channel is imitated, I represents unit matrix, Δ1、Δ2、...、ΔnThe down channel of each second physical area is represented respectively
Compensation rate, n represent physical area quantity at least one second physical area, L1Represent under first physical area
The down channel large scale decline that row channel information includes, H1Represent that the descending channel information of first physical area includes
Down channel multipath fading.
Second aspect, a kind of first physical area provided in an embodiment of the present invention, including：
Processing unit, for determining at least one second physical area, at least one second physical area includes leading
Cause independent scheduling user's set UE traffic data demodulation exist business datum down channel and common pilot signal it is descending
The physical area of channel inconsistence problems, first physical area are that to provide the physics serviced for the independent scheduling UE small
Area, first physical area and at least one second physical area use identical logical cell identity；
Determine that itself is each into the descending channel information of the independent scheduling UE and at least one second physical area
Descending channel information of individual second physical area to the independent scheduling UE；
It is true respectively according to the descending channel information of itself and the descending channel information of each second physical area
The down channel compensation rate of fixed each second physical area；
Down channel of the cell according to the down channel compensation rate of each second physical area to own service data
Compensate, obtain the down channel equivalent with the down channel of the common pilot signal；
Transmit-Receive Unit, on the equivalent down channel that is determined in the processing unit to the independent scheduling UE
Send business datum.
Because the channel of the independent scheduling UE downlink service data experience received is equivalent channel, the equivalent channel is with being used for
The channel of the common pilot signal experience of demodulation is consistent, and the common pilot signal for demodulation is by the independent business for dispatching UE
What at least one second physical area and the first physical area joint that data demodulation has interference were sent, therefore pass through above-mentioned the
One physical area so that the channel and the common pilot signal for demodulating for the downlink service data experience that independent scheduling UE is received
The channel of experience is consistent, and then improves independent scheduling UE demodulation ability.
It is specific to use when the processing unit determines at least one second physical area in a kind of possible implementation
In：
Determine that first physical area receives the reference signal reception work(for the detectable signal that the independent scheduling UE is sent
Rate RSRP, and connect with first physical area using each physical area in all physical areas of identity logic cell ID
Receive the RSRP for the detectable signal that the independent scheduling UE is sent；
The RSRP of first physical area and the RSRP of each physical area difference are calculated respectively, and will be greater than
Or it is defined as at least one second physical area equal at least one physical area corresponding to the difference of predetermined threshold value.
So, processing unit can use identity logic cell according to the RSRP of the first physical area and with the first physical area
The RSRP of each physical area in all physical areas of mark, selection cause independent scheduling UE traffic data demodulation industry to be present
At least one second physical area of the down channel for data of being engaged in and the down channel inconsistence problems of common pilot signal, use
The physical area joint of identity logic cell ID sends common pilot signal.
In a kind of possible implementation, the processing unit is it is determined that at least one second physical area respectively
Individual second physical area to the independent scheduling UE descending channel information when, be specifically used for：
Obtain the uplink channel information that the independent scheduling UE arrives each second physical area respectively；
Based on up-downgoing channel reciprocity principle, each second physical area is arrived according to the independent UE that dispatches respectively
Uplink channel information, estimation obtain the descending channel information of each second physical area.
In a kind of possible implementation, the processing unit is according to itself the descending channel information and each
The descending channel information of second physical area, the down channel compensation rate of each second physical area is determined respectively
When, it is specifically used for：
Pass through formulaEach second physical area is determined respectively
Down channel compensation rate, wherein, Δ represents the down channel compensation rate of second physical area, L1Represent first thing
The down channel large scale decline that the descending channel information of reason cell includes, L2Represent the down channel of second physical area
The down channel large scale decline that information includes, H1Represent the descending letter that the descending channel information of first physical area includes
Road multipath fading, H2The down channel multipath fading that the descending channel information of second physical area includes is represented,
(·)HThe complex conjugate transposition computing of matrix is asked in expression, and (A ⊙ B) represents to seek the point multiplication operation of matrix A and matrix B.
In a kind of possible implementation, the processing unit is in the descending letter according to each second physical area
Road compensation rate compensates to the down channel of own service data, obtains equivalent with the down channel of the common pilot signal
Down channel when, be specifically used for：
Pass through formula A=L1(I+Δ1+Δ2+...+Δn)H1The down channel of own service data is compensated, obtained
The equivalent down channel with the down channel of the common pilot signal, wherein, A represents the equivalent down channel, and I represents single
Bit matrix, Δ1、Δ2、...、ΔnRepresent the down channel compensation rate of each second physical area respectively, n represent described in extremely
Physical area quantity in few second physical area, L1Under representing the descending channel information of first physical area and including
Row channel large scale declines, H1The small yardstick of down channel that representing the descending channel information of first physical area includes declines
Fall.
In technical scheme provided in an embodiment of the present invention, determined by the first physical area to the independent business number for dispatching UE
Behind at least one second physical area that interference according to demodulation be present, the first physical area is according to the descending channel information of itself and respectively
The descending channel information of individual second physical area, the down channel compensation rate of each second physical area is determined respectively；Then
One physical area compensates according to the down channel compensation rate of each second physical area to the down channel of itself, obtains
Imitate down channel；Last first physical area sends business datum on equivalent down channel to independent scheduling UE.Due to independence
The channel for the downlink service data experience that scheduling UE is received is equivalent channel, and the equivalent channel is believed with the public guide frequency for demodulating
The channel of number experience is consistent, and the common pilot signal for demodulation is by interference be present to the independent traffic data demodulation for dispatching UE
At least one second physical area and the first physical area joint send, hence in so that the lower industry that independent scheduling UE is received
The channel of data of being engaged in experience is consistent with the channel of the common pilot signal experience for demodulating, and then improves independent scheduling UE solution
Tune ability.
Brief description of the drawings
Fig. 1 is a kind of operation principle schematic diagram for ASFN systems that prior art provides；
Fig. 2 is a kind of business datum sending method schematic flow sheet provided in an embodiment of the present invention；
Fig. 3 is to carry out showing for information exchange in a kind of LTE group network systems provided in an embodiment of the present invention between physical area
It is intended to；
Fig. 4 is a kind of Cellular Networks Cloud-RAN configuration diagrams provided in an embodiment of the present invention；
Fig. 5 is a kind of operation principle schematic diagram of ASFN systems provided in an embodiment of the present invention；
Fig. 6 is a kind of network architecture schematic diagram of SFN+ASFN mixed networking provided in an embodiment of the present invention；
Fig. 7 is a kind of structural representation of first physical area provided in an embodiment of the present invention；
Fig. 8 is a kind of structural representation of first physical area provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of business datum sending method and the first physical area, to solve independent scheduling UE
The problem of channel of the downlink service data experience of reception and the inconsistent channel of the common pilot signal experience for demodulating, carry
High independent scheduling UE demodulation ability.Wherein, method and the first physical area be based on same inventive concept, due to method and
The principle that first physical area solves problem is similar, therefore the implementation of the first physical area and method can be repeated with cross-reference
Part repeats no more.
Technical scheme provided in an embodiment of the present invention is applied to ASFN systems, includes multiple physical areas in ASFN, owns
Physical area uses identical logical cell identity, provides service using identical frequency for UE, each physical area includes one
Individual or multiple RRU.It is different that the signal strength of different physical areas is received based on UE, UE points are dispatched for combined dispatching UE with independent
UE.Combined dispatching UE is in the imbricate region of multiple physical areas, for the UE provide service physical area have it is multiple.Solely
Vertical scheduling UE is near some physical area, and the signal that the UE receives other physical areas is weaker, then is UE services
Physical area is a most strong physical area of UE reception signals.The isolation that independent scheduling UE is declined based on large scale, is avoided not
With physics inter-cell interference, more UE spatial reuses are realized, and then improve power system capacity.
By taking the operation principle schematic diagram of ASFN systems as shown in Figure 1 as an example, UE1 and UE2 in Fig. 1 are combined dispatching
UE, has physical area 1 and physical area 2 for the UE1 physical areas for providing service, has thing for the UE2 physical areas for providing service
Manage cell 1, physical area 2 and physical area 3.UE3 and UE4 in Fig. 1 are independent scheduling UE, and the physics of service is provided for UE3
Cell has physical area 3, has physical area 2 for the UE4 physical areas for providing service.
The present embodiments relate to UE, the equipment for providing a user voice and/or data connectivity can be referred to, had
The portable equipment of wireless connecting function or other processing equipments for being connected to radio modem.Wireless terminal device can
To be communicated through wireless access network (Radio Access Network, RAN) with one or more core nets, wireless terminal is set
Standby can be mobile terminal device, such as mobile phone (or be " honeycomb " phone) and have the computer of mobile terminal device,
For example, it may be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they and wireless access
Net exchanges language and/or data.For example, PCS (Personal Communication Service, PCS) is electric
Words, wireless phone, Session initiation Protocol (Session Initiated Protocol, SIP) phone, WLL
(Wireless Local Loop, WLL) is stood, personal digital assistant (Personal Digital Assistant, PDA) etc. is set
It is standby.Wireless terminal device is referred to as system, subscri er unit (Subscriber Unit), subscriber station (Subscriber
Station), movement station (Mobile Station), mobile station (Mobile), distant station (Remote Station), access point
(Access Point), RTU (Remote Terminal), access terminal equipment (Access Terminal), use
Family terminal device (User Terminal), user agent (User Agent), user equipment (User Device) or user's dress
Standby (User Equipment).
Technical scheme provided in an embodiment of the present invention is described in detail below by specific embodiment, it is necessary to which explanation, real
The displaying order for applying example only represents the sequencing of embodiment, does not represent the quality for the technical scheme that embodiment is provided.
Embodiment one
As shown in Fig. 2 the embodiments of the invention provide a kind of business datum sending method, including：
S201, the first physical area determine at least one second physical area.
It is most strong that the signal of first physical area transmission is received positioned at the UE of the first physical area near zone, due to the UE
Apart from other physical areas farther out therefore receive other physical areas transmission signal it is weaker, the UE is defined as independent tune by system
UE is spent, the first physical area is that the physical area that UE provides service is independently dispatched for this.
At least one second physical area that first physical area determines includes causing independent scheduling UE business datum solution
Adjust the physical area of the down channel inconsistence problems of the down channel that business datum be present and common pilot signal.First physics
At least one second physical area that cell and the first physical area determine uses identical logical cell identity, therefore the first thing
Manage cell and at least one second physical area sends identical common pilot signal, such as common pilot signal can be CRS.
Independent scheduling UE can receive the common pilot signal that at least one second physical area is sent, independent according to prior art
Scheduling UE is demodulated based on common pilot signal to receiving the business datum from the first physical area, then independent tune occurs
The problem of spending the channel and the inconsistent channel of the common pilot signal experience for demodulating for the business datum experience that UE is received, because
This at least one second physical area can produce interference to the independent traffic data demodulation for dispatching UE.
Optionally, the first physical area determines there is the independent traffic data demodulation for dispatching UE at least one the of interference
The method of two physical areas is as follows：
First physical area determines itself to receive the reference signal of detection (Sounding) signal that independent scheduling UE is sent
Receiving power (Reference Signal Received Power, RSRP), and it is small using identity logic with the first physical area
Each physical area receives the RSRP for the detectable signal that the independent scheduling UE is sent in all physical areas of area's mark；
Wherein, the first physical area it is small can to obtain each physics by carrying out information exchange between each physical area
The RSRP in area.For example, Long Term Evolution (Long Term Evolution, LTE) group network system schematic diagram as shown in Figure 3, physics
The interaction of data message and control information is carried out between cell by X2 interface.
First physical area can also obtain the RSRP of each physical area from information pool, and physics is preserved in the information pool
The information of cell, include the RSRP of physical area.For example, Cellular Networks cloud wireless access network (Cloud Radio as shown in Figure 4
Access Network, Cloud-RAN) configuration diagram, baseband pool preserves the RSRP of physical area, the first physical area from
The RSRP of each physical area is obtained in the baseband pool.
First physical area calculates the RSRP of the first physical area and the RSRP of each physical area difference respectively, and will
It is defined as at least one second physical area more than or equal at least one physical area corresponding to the difference of predetermined threshold value.
Wherein it is possible to be configured according to historical data or empirical value to predetermined threshold value, the predetermined threshold value be used to judging with
First physical area joint sends the business datum that independent scheduling UE is can result in all physical areas of common pilot signal
The physical area of the down channel of business datum and the down channel inconsistence problems of common pilot signal be present in demodulation.
It should be noted that the first physical area, which determines to combine with the first physical area, sends all of common pilot signal
In physical area, there is the down channel and public guide frequency letter of business datum in the traffic data demodulation that can result in independent scheduling UE
Number down channel inconsistence problems at least one second physical area method, it is not limited to the above method, can also
Using other method.For example, the first physical area determines to use the property of identity logic cell ID with the first physical area
The RSRP that each physical area in cell receives the detectable signal that independent scheduling UE is sent is managed, the first physical area will be greater than setting
At least one physical area corresponding to the RSRP of threshold value is defined as at least one second physical area.Or first physics it is small
All physical areas for combining transmission common pilot signal with first physical area are determined directly as at least one second by area
Physical area.
S202, the first physical area determine itself descending channel information to independent scheduling UE and at least one second physics
Descending channel information of each second physical area to independent scheduling UE in cell.
Wherein, descending channel information includes the decline of down channel large scale and down channel multipath fading, down channel
Large scale decline is mainly used in embodiment down channel signal amplitude caused by path loss and shadow fading and changed, and down channel is small
Yardstick decline is mainly used in embodying down channel phase place change caused by multidiameter delay.Down channel is represented byWherein,Down channel is represented, L represents the big chi of down channel
Degree decline, H represent down channel multipath fading, and j represents imaginary number.By down channel be expressed as down channel large scale decline and
The synthesized form of down channel multipath fading, being mainly used in embodying needs while considers to width when being compensated to down channel
The compensation of degree and the compensation to phase.Down channel refers to that the signal of physical area dispatches UE channel to independence, such as descending
Signal can be physical down link sharing channel (Physical Downlink Shared Channel, PDSCH).
Optionally, the first physical area determines the descending letter of each second physical area at least one second physical area
The method of road information is as follows：
First physical area obtains the uplink channel information of each second physical area.
Wherein, uplink channel information includes the decline of up channel large scale and up channel multipath fading, up channel
Refer to independent scheduling UE signal to the channel of physical area.First physical area can be by between each second physical area
Information exchange is carried out, obtains the uplink channel information of each second physical area.For example, LTE group network systems as shown in Figure 3 show
It is intended to, carries out the interaction of data message and control information between physical area by X2 interface.
First physical area can also obtain the uplink channel information of each second physical area, the information pool from information pool
In preserve the information of physical area, include the uplink channel information of physical area.For example, Cloud-RAN framves as shown in Figure 4
Structure schematic diagram, baseband pool preserve the uplink channel information of physical area, and the first physical area obtains each from the baseband pool
The uplink channel information of second physical area.
After first physical area obtains the uplink channel information of each second physical area, based on up-downgoing channel reciprocity
Principle, the down channel for estimating to obtain each second physical area according to the uplink channel information of each second physical area are believed
Breath.
Wherein, in the case where up-downgoing channel reciprocity principle is set up, down channel large scale can be declined and be estimated
Up channel large scale is declined, and down channel multipath fading is estimated into up channel multipath fading.
S203, the first physical area are according to itself descending channel information to independent scheduling UE and at least one second physics
Each second physical area determines under each second physical area respectively to independent scheduling UE descending channel information in cell
Row channel compensation amount.
First physical area can determine the down channel compensation rate of each second physical area respectively by equation below one：
For any one the second physical area, in formula one, Δ represents the down channel compensation of the second physical area
Amount, L1Represent the down channel large scale decline that the descending channel information of the first physical area includes, L2Represent the second physical area
Descending channel information include down channel large scale decline, H1Represent that the descending channel information of the first physical area includes
Down channel multipath fading, H2The down channel multipath fading that the descending channel information of the second physical area includes is represented,
(·)HThe complex conjugate transposition computing of matrix is asked in expression, and (A ⊙ B) represents to seek the point multiplication operation of matrix A and matrix B.It can be easy to calculate, the down channel compensation rate of certain second physical area also may be used
It is expressed as(·)-1Representing matrix inversion operation.
For the down channel compensation rate of any one the second physical area's
Derivation principle is as follows：
First physical area combines the public process for leading signal of transmission with any one second physical area can be by as follows
Formula two represents：
R=(L1H1+L2H2)R0+Z1Formula two
In formula two, R represents the common pilot signal that independent scheduling UE is received, L1And L2The first physical area is represented respectively
Down channel large scale decline and the second physical area down channel large scale decline, H1And H2The first physics is represented respectively
The down channel multipath fading of cell and the down channel multipath fading of the second physical area, R0Represent the first physical area
The common pilot signal sent with the second physical area joint, Z1Represent the white noise of common pilot signal superposition.
Using prior art, the first physical area can pass through equation below to the independent scheduling UE processes for sending business datum
Three represent：
Y=L1H1S+Z0Formula three
In formula three, Y represents the business datum that independent scheduling UE is received, L1Represent that the down channel of the first physical area is big
Yardstick declines, H1The down channel multipath fading of the first physical area is represented, S represents the business number that the first physical area is sent
According to Z0Represent the white noise of business datum superposition.
From formula two and formula three, using prior art, the business datum experience that independent scheduling UE is received be present
The problem of channel and the inconsistent channel of the common pilot signal experience for demodulating, reduce independent scheduling UE demodulation energy
Power.
It is small by increasing by the second physics when the first physical area sends business datum to independent scheduling UE in the present embodiment
The down channel compensation rate Δ in area so that the equivalent channel and the public affairs for demodulating for the business datum experience that independent scheduling UE is received
The channel of pilot signal experience is consistent altogether, and then improves independent scheduling UE demodulation ability.
First physical area increases by the second physical area down channel from business datum to independent scheduling UE when sending compensates
After measuring Δ, the first physical area can be represented to the independent scheduling UE processes for sending business datum by equation below four：
Y=L1H1(I+Δ)S+Z0=(L1H1+L2H2)S+Z0Formula four
In formula four, Y represents the business datum that independent scheduling UE is received, L1Represent that the down channel of the first physical area is big
Yardstick declines, H1The down channel multipath fading of the first physical area is represented, Δ represents the down channel of the second physical area
Compensation rate, S represent the business datum that the first physical area is sent, Z0Represent the white noise of business datum superposition, L2Represent the second thing
Manage the down channel large scale decline of cell, H2Represent the down channel multipath fading of the second physical area.
Solved by formula four：Similarly, it is small for any one second physics
Area, the down channel compensation rate of second physical area can be expressed as
S204, the first physical area are according to the down channel compensation rate of each second physical area to own service data
Down channel compensates, and obtains the down channel equivalent with the down channel of common pilot signal.
Down channel compensation rate in any one known the second physical area can be expressed as
In the case of, the first physical area can be compensated by equation below five to the down channel of own service data, obtain with
The equivalent equivalent down channel of the down channel of common pilot signal：
A=L1(I+Δ1+Δ2+...+Δn)H1Formula five
In formula five, A represents equivalent down channel, and I represents unit matrix, Δ1、Δ2、...、ΔnEach is represented respectively
The down channel compensation rate of two physical areas, n represent physical area quantity at least one second physical area, L1Represent first
The down channel large scale decline that the descending channel information of physical area includes, H1Represent the down channel letter of the first physical area
Cease the down channel multipath fading included.
S205, the first physical area send business datum on equivalent down channel to independent scheduling UE.
First physical area increases the descending of at least one second physical area when sending business datum to independent scheduling UE
After channel compensation amount Δ, the first physical area can pass through the table of equation below six to the independent scheduling UE processes for sending business datum
Show：
Y=AS+Z0=L1(I+Δ1+Δ2+...+Δn)H1S+Z0Formula six
In formula six, Y represents that the first physical area sends business datum by equivalent down channel H to independent scheduling UE
When.
Illustrate
Assuming that：Include three physical areas, respectively physical area 1, physical area 2 in ASFN systems as shown in Figure 5
With physical area 3, physical area 1, physical area 2 and physical area 3 use identical logical cell identity, and physical area 1 is
Independent scheduling UE provides service.
Physical area 1 determine to cause independent scheduling UE traffic data demodulation exist the down channel of business datum with it is public
There are physical area 2 and physical area 3 in the physical area of the down channel inconsistence problems of pilot signal.Physical area 1 is true respectively
It is fixed itself to include down channel multipath fading H to independent scheduling UE descending channel information1Declined with down channel large scale
L1, physical area 2 includes down channel multipath fading H to independent scheduling UE descending channel information2With down channel large scale
Decline L2, and physical area 3 includes down channel multipath fading H to independent scheduling UE descending channel information3With descending letter
Road large scale decline L3.For example, the first physical area can determine that physical area 2 is arrived respectively based on up-downgoing channel reciprocity principle
Independent scheduling UE descending channel information is arrived in independent scheduling UE descending channel information and physical area 3.
Physical area 1 determines the down channel compensation rate of physical area 2Thing
Manage the down channel compensation rate of cell 3Obtain and common pilot signal
The equivalent down channel A=L of down channel1(I+Δ1+Δ2)H1.Physical area 1 is on equivalent down channel to independent scheduling
UE sends business datum.
In a kind of business datum sending method provided in an embodiment of the present invention, determine to cause independence by the first physical area
The down channel of business datum and the down channel inconsistence problems of common pilot signal be present in scheduling UE traffic data demodulation
At least one second physical area after, the first physical area is according to itself to independent scheduling UE descending channel information and each
Second physical area determines the down channel compensation of each second physical area respectively to independent scheduling UE descending channel information
Amount；Then descending letter of first physical area according to the down channel compensation rate of each second physical area to own service data
Road compensates, and obtains the down channel equivalent with the down channel of common pilot signal；Last first physical area is equivalent
Down channel on to independent scheduling UE send business datum.In above-mentioned technical proposal, the descending of UE receptions is dispatched due to independent
The channel of business datum experience is equivalent down channel, and the equivalent down channel passes through with the common pilot signal for demodulating
The down channel gone through is consistent, and the common pilot signal for demodulation is by causing independent scheduling UE traffic data demodulation industry to be present
The down channel for data of being engaged in and at least one second physical area of the down channel inconsistence problems of common pilot signal and the
The joint transmission of one physical area, hence in so that the channel for the downlink service data experience that independent scheduling UE is received demodulates with being used for
Common pilot signal experience channel it is consistent, and then improve independent scheduling UE demodulation ability.
Needing especially to illustrate, technical scheme provided in an embodiment of the present invention is not limited to suitable for ASFN systems,
Go for other systems or scene.
For example, technical scheme provided in an embodiment of the present invention is applicable to Single Frequency Network (Single Frequency
Network, SFN)+ASFN mixed networking the network architecture.In the network architecture of SFN+ASFN mixed networking, it is possible to one
Multiple RRU that physical area includes form a cluster, may include multiple clusters in network, user's space division multiplexing is realized between cluster.Such as Fig. 6
In the network architecture of shown SFN+ASFN mixed networking, RRU1 and RRU2 that physical area 1 includes form first cluster, physics
RRU3 and RRU4 that cell 2 includes form second cluster, and the RRU in first cluster provides service for the independent UE1 that dispatches, second
RRU in cluster provides service for independent scheduling UE2, and it is combined dispatching that the RRU in RRU and second cluster in first cluster, which combines,
UE3 provides service.Now, the downlink business that independent scheduling UE is received can be realized by technical scheme provided in an embodiment of the present invention
The channel of data experience is consistent with the channel of the common pilot signal experience for demodulating, and then improves independent scheduling UE demodulation
Ability.
In another example technical scheme provided in an embodiment of the present invention is applicable in LTE system between physical area using association
It is poor based on port power in this scene with the scene of transmission means, it is edge UE and center UE UE points, edge UE receptions is present
Business datum with for demodulate common pilot signal experience channel it is inconsistent the problem of.Now, can be equivalent by edge UE
For the independent scheduling UE in the present embodiment, the physical area for UE is independently dispatched for this providing service can be equivalent to this implementation
The first physical area in example, the down channel and public affairs that the traffic data demodulation for independently dispatching UE will be caused business datum to be present
The collaboration physical area of the down channel inconsistence problems of pilot signal altogether, at least one second thing being equivalent in the present embodiment
Cell is managed, the technical scheme provided by the present embodiment can realize the channel that the downlink service data that independent scheduling UE is received undergoes
It is consistent with the channel of the common pilot signal experience for demodulation, and then improve independent scheduling UE demodulation ability.
Embodiment two
Fig. 7 is a kind of first physical area provided in an embodiment of the present invention, and first physical area can use Fig. 2 corresponding
Embodiment provide method.First physical area 700 includes：Processing unit 701 and Transmit-Receive Unit 702.
Processing unit 701, for determining at least one second physical area, at least one second physical area includes causing
The down channel of business datum and the descending letter of common pilot signal be present in independent scheduling user's set UE traffic data demodulation
The physical area of road inconsistence problems, the first physical area are to provide the physical area serviced, the first physics for independent scheduling UE
Cell and at least one second physical area use identical logical cell identity；
Determine itself each second thing into independent scheduling UE descending channel information and at least one second physical area
Cell is managed to independent scheduling UE descending channel information；
According to the descending channel information of itself and the descending channel information of each second physical area, each is determined respectively
The down channel compensation rate of two physical areas；
Cell is carried out according to the down channel compensation rate of each second physical area to the down channel of own service data
Compensation, obtains the down channel equivalent with the down channel of common pilot signal；
Transmit-Receive Unit 702, for sending industry to independent scheduling UE on the equivalent down channel that is determined in processing unit 701
Business data.
Optionally, when processing unit 701 determines at least one second physical area, it is specifically used for：
Determine that the first physical area receives the RSRP for the detectable signal that independent scheduling UE is sent, and make with the first physical area
The detectable signal of independent scheduling UE transmissions is received with each physical area in all physical areas of identity logic cell ID
RSRP；
The RSRP of the first physical area and the RSRP of each physical area difference are calculated respectively, and above or equal to pre-
If at least one physical area corresponding to the difference of threshold value is defined as at least one second physical area.
Wherein, it is single can to carry out transmitting-receiving during information exchange by Transmit-Receive Unit 702 and other physical areas etc. for processing unit 701
The information that member 702 receives, when realizing the RSRP and the RSRP of each physical area for determining the first physical area, particular content can join
S201 as shown in Figure 2, here is omitted.
Optionally, processing unit 701 is it is determined that each second physical area is to independently at least one second physical area
When dispatching UE descending channel information, it is specifically used for：
Obtain the uplink channel information that independent scheduling UE arrives each second physical area respectively；
Based on up-downgoing channel reciprocity principle, according to the independent up letter dispatched UE and arrive each second physical area respectively
Road information, estimation obtain the descending channel information of each second physical area.
Optionally, processing unit 701 is in the descending letter according to itself descending channel information and each second physical area
Road information, when determining the down channel compensation rate of each second physical area respectively, it is specifically used for：
Pass through formulaDetermine respectively under each second physical area
Row channel compensation amount, wherein, Δ represents the down channel compensation rate of the second physical area, L1Represent the descending of the first physical area
The down channel large scale decline that channel information includes, L2Represent the descending letter that the descending channel information of the second physical area includes
Road large scale decline, H1Represent the down channel multipath fading that the descending channel information of the first physical area includes, H2Represent the
The down channel multipath fading that the descending channel information of two physical areas includes, ()HRepresent to ask the complex conjugate of matrix to turn
Computing is put, (A ⊙ B) represents to seek the point multiplication operation of matrix A and matrix B.
Optionally, processing unit 701 according to the down channel compensation rate of each second physical area to own service number
According to down channel compensate, when obtaining the down channel equivalent with the down channel of common pilot signal, be specifically used for：
Pass through formula A=L1(I+Δ1+Δ2+...+Δn)H1The down channel of own service data is compensated, obtained
The equivalent down channel with the down channel of common pilot signal, wherein, A represents equivalent down channel, and I represents unit matrix,
Δ1、Δ2、...、ΔnThe down channel compensation rate of each second physical area is represented respectively, and n represents at least one second physics
Physical area quantity in cell, L1Represent the down channel large scale decline that the descending channel information of the first physical area includes, H1
Represent the down channel multipath fading that the descending channel information of the first physical area includes.
It should be noted that the division in the embodiment of the present invention to unit is schematical, only a kind of logic function
Division, can there is other dividing mode when actually realizing.In addition, each functional unit in each embodiment of the application can be with
It is integrated in a processing unit or unit is individually physically present, can also two or more unit collection
Into in a unit.Above-mentioned integrated unit can both be realized in the form of hardware, can also use SFU software functional unit
Form realize.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, the technical scheme of the application is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
It is each that equipment (can be personal computer, server, or network equipment etc.) or processor (processor) perform the application
The all or part of step of embodiment methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage
(Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD
Etc. it is various can be with the medium of store program codes.
Based on above example, the embodiment of the present invention additionally provides a kind of first physical area, and first physical area can
The method provided using embodiment corresponding to Fig. 2, can be and the first physical area identical equipment shown in Fig. 7.Refering to Fig. 8
Shown, first physical area 800 includes：Processor 801, emitter 802, receiver 803, bus 804 and memory
805, wherein：
Processor 801, emitter 802, receiver 803 and memory 805 are connected with each other by bus 804；Bus 804
Can be Peripheral Component Interconnect standard (peripheral component interconnect, PCI) bus or extension industry mark
Quasi- structure (extended industry standard architecture, EISA) bus etc..The bus can be divided into ground
Location bus, data/address bus, controlling bus etc..For ease of representing, only represented in Fig. 8 with a thick line, it is not intended that only one
Root bus or a type of bus.
Processor 801 is used to realizing the function of processing unit 701 in Fig. 7 in Fig. 8, and emitter 802 and receiver are used in Fig. 8
In the function of realizing Transmit-Receive Unit 702 in Fig. 7.First physical area 800 also includes memory 805, for depositing program etc..
Specifically, program can include program code, and the program code includes computer-managed instruction.Memory 805 may include with
Machine access memory (random access memory, RAM), it is also possible to also including nonvolatile memory (non-
Volatile memory), a for example, at least magnetic disk storage.Processor 801 performs the application journey that memory 805 is deposited
Sequence, realize as above business datum sending method.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without departing from this hair to the embodiment of the present invention
The spirit and scope of bright embodiment.So, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention
And its within the scope of equivalent technologies, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
- A kind of 1. business datum sending method, it is characterised in that including：First physical area determines at least one second physical area, and at least one second physical area includes causing independence Scheduling user's set UE traffic data demodulation exist business datum down channel and common pilot signal down channel not The physical area of consensus, first physical area is the physical area that service is provided for the independent scheduling UE, described First physical area and at least one second physical area use identical logical cell identity；First physical area determines itself to the independent descending channel information and described at least one second for dispatching UE Descending channel information of each second physical area to the independent scheduling UE in physical area；First physical area is according to the descending channel information of itself and the descending letter of each second physical area Road information, the down channel compensation rate of each second physical area is determined respectively；First physical area is according to the down channel compensation rate of each second physical area to own service data Down channel compensates, and obtains the down channel equivalent with the down channel of the common pilot signal；First physical area sends business datum on the equivalent down channel to the independent scheduling UE.
- 2. the method as described in claim 1, it is characterised in that first physical area determines that at least one second physics is small Area, including：The reference signal that first physical area determines itself to receive the detectable signal that the independent scheduling UE is sent receives work( Rate RSRP, and connect with first physical area using each physical area in all physical areas of identity logic cell ID Receive the RSRP for the detectable signal that the independent scheduling UE is sent；First physical area calculates the RSRP's of the first physical area and RSRP of each physical area respectively Difference, and be defined as above or equal at least one physical area corresponding to the difference of predetermined threshold value described at least one Second physical area.
- 3. method as claimed in claim 1 or 2, it is characterised in that first physical area determines described at least one Each second physical area dispatches UE descending channel information to the independence in two physical areas, including：First physical area obtains the up channel letter that the independent scheduling UE arrives each second physical area respectively Breath；First physical area is based on up-downgoing channel reciprocity principle, is arrived respectively according to the independent scheduling UE described each The uplink channel information of second physical area, estimation obtain the descending channel information of each second physical area.
- 4. the method as described in claims 1 to 3 is any, it is characterised in that first physical area is according to itself Descending channel information and the descending channel information of each second physical area, each second physical area is determined respectively Down channel compensation rate, including：First physical area passes through formulaDetermine respectively described each The down channel compensation rate of second physical area, wherein, Δ represents the down channel compensation rate of second physical area, L1Table Show the down channel large scale decline that the descending channel information of first physical area includes, L2Represent that second physics is small The down channel large scale decline that the descending channel information in area includes, H1Represent the descending channel information of first physical area Including down channel multipath fading, H2Represent that the down channel that the descending channel information of second physical area includes is small Yardstick declines, ()HThe dot product of the complex conjugate transposition computing of matrix, (A ⊙ B) representing matrix A and matrix B is sought in expression.
- 5. method as claimed in claim 4, it is characterised in that first physical area is small according to each second physics The down channel compensation rate in area compensates to the down channel of own service data, obtain with the common pilot signal The equivalent down channel of row channel, including：First physical area passes through formula A=L1(I+Δ1+Δ2+...+Δn)H1To the down channel of own service data Compensate, obtain the down channel equivalent with the down channel of the common pilot signal, wherein, A represent it is described it is equivalent under Row channel, I represent unit matrix, Δ1、Δ2、...、ΔnThe down channel compensation of each second physical area is represented respectively Amount, n represent physical area quantity at least one second physical area, L1Represent the descending letter of first physical area The down channel large scale decline that road information includes, H1Represent first physical area descending channel information include it is descending Channel multipath fading.
- A kind of 6. first physical area, it is characterised in that including：Processing unit, for determining at least one second physical area, at least one second physical area includes causing solely The down channel of business datum and the down channel of common pilot signal be present in vertical scheduling user's set UE traffic data demodulation The physical area of inconsistence problems, first physical area are to provide the physical area serviced, institute for the independent scheduling UE State the first physical area and at least one second physical area and use identical logical cell identity；Determine itself into the descending channel information of the independent scheduling UE and at least one second physical area each the Descending channel information of two physical areas to the independent scheduling UE；According to the descending channel information of itself and the descending channel information of each second physical area, institute is determined respectively State the down channel compensation rate of each second physical area；Cell is carried out according to the down channel compensation rate of each second physical area to the down channel of own service data Compensation, obtains the down channel equivalent with the down channel of the common pilot signal；Transmit-Receive Unit, for being sent on the equivalent down channel that is determined in the processing unit to the independent scheduling UE Business datum.
- 7. the first physical area as claimed in claim 6, it is characterised in that the processing unit determines at least one second thing When managing cell, it is specifically used for：Determine that first physical area receives the Reference Signal Received Power for the detectable signal that the independent scheduling UE is sent RSRP, and received with first physical area using each physical area in all physical areas of identity logic cell ID The RSRP for the detectable signal that the independent scheduling UE is sent；The RSRP of first physical area and the RSRP of each physical area difference are calculated respectively, and be will be greater than or waited At least one physical area corresponding to the difference in predetermined threshold value is defined as at least one second physical area.
- 8. the first physical area as claimed in claims 6 or 7, it is characterised in that the processing unit it is determined that it is described at least In one the second physical area each second physical area to the independent scheduling UE descending channel information when, be specifically used for：Obtain the uplink channel information that the independent scheduling UE arrives each second physical area respectively；Based on up-downgoing channel reciprocity principle, according to the independent UE that dispatches respectively to the upper of each second physical area Row channel information, estimation obtain the descending channel information of each second physical area.
- 9. the first physical area as described in claim 6 to 8 is any, it is characterised in that the processing unit is according to itself The descending channel information and each second physical area the descending channel information, determine each second thing respectively When managing the down channel compensation rate of cell, it is specifically used for：Pass through formulaDetermine respectively under each second physical area Row channel compensation amount, wherein, Δ represents the down channel compensation rate of second physical area, L1Represent that first physics is small The down channel large scale decline that the descending channel information in area includes, L2Represent the descending channel information of second physical area Including down channel large scale decline, H1Represent that the down channel that the descending channel information of first physical area includes is small Yardstick declines, H2Represent the down channel multipath fading that the descending channel information of second physical area includes, ()HTable Show the complex conjugate transposition computing for seeking matrix, (A ⊙ B) represents to seek the point multiplication operation of matrix A and matrix B.
- 10. the first physical area as claimed in claim 9, it is characterised in that the processing unit is according to described each The down channel compensation rate of two physical areas compensates to the down channel of own service data, obtains and the public guide frequency During the equivalent down channel of the down channel of signal, it is specifically used for：Pass through formula A=L1(I+Δ1+Δ2+...+Δn)H1The down channel of own service data is compensated, obtained and institute The equivalent down channel of the down channel of common pilot signal is stated, wherein, A represents the equivalent down channel, and I represents unit square Battle array, Δ1、Δ2、...、ΔnRepresent the down channel compensation rate of each second physical area respectively, n represent described at least one Physical area quantity in individual second physical area, L1Represent the descending letter that the descending channel information of first physical area includes Road large scale decline, H1Represent the down channel multipath fading that the descending channel information of first physical area includes.
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