CN106888483A - A kind of communication control method, macro base station, focus base station and system - Google Patents
A kind of communication control method, macro base station, focus base station and system Download PDFInfo
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- CN106888483A CN106888483A CN201610235772.2A CN201610235772A CN106888483A CN 106888483 A CN106888483 A CN 106888483A CN 201610235772 A CN201610235772 A CN 201610235772A CN 106888483 A CN106888483 A CN 106888483A
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- 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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
- H04W40/16—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality based on interference
Abstract
The invention discloses a kind of communication control method, macro base station, focus base station and system, wherein method includes：Set up with focus base station and be connected, across the area interference information that the focus base station is sent is got by the connection；Get the large scale fading information of the focus base station；Based on the large scale fading information and across the area interference information, beam forming vector is adjusted；The interference information that beam forming vector prediction after based on adjustment obtains to the focus base station, by described in the linkup transmit to the interference information of focus base station to the focus base station side.
Description
Technical field
The present invention relates to the BTS management technology in the communications field, more particularly to a kind of communication control method, macro base station, heat
Point base stations and system.
Background technology
With the high speed development of radio communication, mobile network user increasingly increases for the demand of high data rate communication service
By force, extensive MIMO technology is the network technology in a kind of next generation communication system of great potential, and its availability of frequency spectrum is higher,
Network in general energy efficiency is high.However, simple extensive MIMO communication system, network structure is relatively simple, it is impossible to completely full
, for the demand of different type communication service, therefore appropriate addition Hot Spot in extensive MIMO will significantly for sufficient user
The overall performance of the lifting system of degree.In extensive MIMO communication system, because there is tdd communication system uplink downlink to believe
The characteristic of road reciprocity, base station end estimated by estimating that ascending pilot frequency that each user sends carries out channel condition information (CSI), and according to
CSI carries out downlink beamforming accordingly.
The some areas in extensive MIMO communication system carry out focus strengthen when, can by configure low-power,
Cheap small base station (focus) lifts a range of communication quality, but the strategy is usually used with macrocellular different frequency range
Communicated, such as built Wi-Fi hotspot indoors.The method can not lift grand honeybee equivalent to extra frequency spectrum resource is wasted
The availability of frequency spectrum of nest frequency range.
The existing mode that Wi-Fi hotspot is set up in macrocellular is needed using extra frequency range.If directly in macrocellular
The problems such as foundation can then produce inter-cell interference, pilot resources to redistribute with frequency focus, current certain methods are to interference
Rejection ability is not enough, and is difficult to carry out quantitative control to the interference for producing, and significantly limit network and total speed；Or need
Larger amount of data are transmitted in X2 interface, form greatly passback pressure.
The content of the invention
In view of this, it is an object of the invention to provide a kind of communication control method, macro base station, focus base station and system,
The above-mentioned problems in the prior art can at least be solved.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The embodiment of the present invention provides a kind of communication control method, is applied to macro base station, including：
Set up with focus base station and be connected, across the area interference letter that the focus base station is sent is got by the connection
Breath；
Get the large scale fading information of the focus base station；
Based on the large scale fading information and across the area interference information, beam forming vector is adjusted；
Beam forming vector prediction after based on adjustment obtains the interference information to the focus base station, by described
To the interference information of focus base station to the focus base station side described in linkup transmit.
The embodiment of the present invention provides a kind of communication control method, is applied to focus base station, and methods described includes：
Set up with macro base station by interface and be connected；
Set up with macro base station and be connected；
Interference information of the macro base station to it is got from the macro base station by the connection；
The beam forming vector of itself is adjusted to its interference information based on the macro base station；
Based on the beam forming vector after adjustment, estimate across the area interference information that obtains, and by described in linkup transmit across
Area interference information is to the macro base station.
The embodiment of the present invention provides a kind of macro base station, including：
Interface unit, is connected for being set up with focus base station, gets what the focus base station was sent by the connection
Across area interference information；
Information acquisition unit, the large scale fading information for getting the focus base station；
Adjustment unit, for based on the large scale fading information and across the area interference information, adjustment wave beam into
Shape vector；
Predicting unit, the interference obtained to the focus base station is predicted for the beam forming vector after based on adjustment
Information, by described in the linkup transmit to the interference information of the focus base station to the focus base station side.
The embodiment of the present invention provides a kind of focus base station, and the focus base station includes：
Interfacing unit, is connected for being set up with macro base station；Grand base is got from the macro base station by the connection
The interference information stood to it；
Adjustment unit, for adjusting the beam forming vector of itself to its interference information based on the macro base station；
Predicting unit, for based on the beam forming vector after adjustment, estimating across the area interference information that obtains, and by institute
State across area interference information described in linkup transmit to the macro base station.
The embodiment of the present invention provides a kind of communication control system, and the system includes：
Macro base station, be connected for being set up with focus base station, by it is described connect get that the focus base station sends across
Area interference information；Get the large scale fading information of the focus base station；Based on the large scale fading information, Yi Jisuo
Across area interference information is stated, beam forming vector is adjusted；Beam forming vector prediction after based on adjustment is obtained to described
The interference information of focus base station, by described in the linkup transmit to the interference information of focus base station to the focus base station side；
Focus base station, for getting interference information of the macro base station to it from the macro base station；Based on the grand base
Stand and the beam forming vector of itself is adjusted to its interference information；Based on the beam forming vector after adjustment, estimate and obtain across small
Area's interference information, and by across area interference information described in the linkup transmit to the macro base station.
The embodiment of the invention provides communication control method, macro base station, focus base station and system, it becomes possible in grand Microcell
Between carry out interference and estimate, in grand small interval transmission cross-layer interference information (ICI), macro base station and heat are adjusted based on interference information
The beam vector of point base stations, and then ensure the communication quality of user equipment, so, it is to avoid entered using the equipment for increasing different frequency
The frequency spectrum resource that row auxiliary transmission brings is wasted, and only need to increase a signaling or an element in the original interface in utilization base station,
Increase interface load that will not be more, just can effective lifting system spectrum efficiency.
Brief description of the drawings
Fig. 1 is embodiment of the present invention communication control method schematic flow sheet one；
Fig. 2 is embodiment of the present invention system architecture schematic diagram of a scenario；
Fig. 3 is that embodiment of the present invention frame structure constitutes structural representation；
Fig. 4 is the signalling diagram of the X2 interface between embodiment of the present invention macro base station and focus base station；
Fig. 5 is embodiment of the present invention communication control method schematic flow sheet two；
Fig. 6 is embodiment of the present invention communication control method schematic flow sheet three；
Fig. 7 is that embodiment of the present invention macro base station constitutes structural representation；
Fig. 8 is that embodiment of the present invention focus base station constitutes structural representation；
Fig. 9 is that embodiment of the present invention system constitutes structural representation.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further described in more detail.
Embodiment one,
A kind of communication control method is the embodiment of the invention provides, macro base station is applied to, as shown in figure 1, methods described bag
Include：
Step 101：Set up with focus base station and be connected, by it is described connect get that the focus base station sends across cell
Interference information；
Step 102：Get the large scale fading information of the focus base station；
Step 103：Based on the large scale fading information and across the area interference information, adjustment beam forming arrow
Amount；
Step 104：Beam forming vector prediction after based on adjustment obtains the interference information to the focus base station,
By described in the linkup transmit to the interference information of focus base station to the focus base station side.
Macro base station described in the present embodiment and focus base station are the base station under extensive MIMO heterogeneous networks, its
In, the macro base station and the focus base station are communicated frequently using same.
It is understood that the trigger condition of above-mentioned steps 101 is performed in the present embodiment can be：Every time when needs are played a game
When portion area carries out focus reinforcement, can be by X2 interface directly by the focus base station (access point) of new addition and macro base station phase
Connect, and the interference of similar frequency bands communication and generation can quantify control.Such as, referring to Fig. 2, wherein macro base station cover a scope compared with
Big scope, focus base station 1 is as the new focus base station for adding.
Further, the structure that the practice processes of the present embodiment are also needed to again to uplink data frames is defined, can be with
Including：The default first position of uplink data frames sets up the leading that M-bit length carries the user equipment transmission of macro base station
Frequency signal；In addition, the default second position setting S bit length in uplink data frames sets for carrying the user of focus base station
The uplink pilot signal that preparation is sent.Such as, referring to Fig. 3, uplink frame and downlink frame, uplink pilot signal position are divided into the frame structure
After upstream data. signals, wherein, M-bit length carries the uplink pilot signal that macro base station user equipment sends, and S bit is long
The uplink pilot signal that the user equipment of degree signaling bearer focus base station sends.
Accordingly, methods described also includes：From the default first position of uplink data frames, the use of self-management is detected
The length that family equipment is sent is the uplink pilot signal of M；From the default second position of uplink data frames, the focus is detected
The length that the user equipment of BTS management is sent is the uplink pilot signal of S；
Wherein, M and S are the integer more than or equal to 1, and the first position is do not possess identical number with the second place
According to two positions of position.
According to Fig. 3 as can be seen that first position and the second place can be for two adjacent positions, comprising many bits
Data bit.
Further, the large scale fading information for getting the focus base station, including：
The length that the user equipment of the focus BTS management obtained based on detection is sent is the uplink pilot signal of S,
Determine the corresponding large scale fading information in the focus base station；
Accordingly, it is described based on the large scale fading information and across the area interference information, adjust beam forming
Vector, including：
The length that the user equipment of self-management obtained based on detection is sent is the uplink pilot signal of M and described
Large scale fading information, is calculated signal to noise ratio；
Beam forming vector is adjusted based on the signal to noise ratio.
Specifically, can be the large scale fading information of the focus base station that the macro base station measures new access, root
According to the large scale fading information of remaining each focus base station, the new access focus base station by X2 interface transmission come across cell
Interference informationThe length sent with the user equipment of the self-management obtained based on detection is obtained for the uplink pilot signal of M
Channel status indicate (CSI), according to below equation adjustment beam forming vector w0,k
SINR=S/ (IThis cell+IAcross cell+N)。
Further, it is described based on adjustment after the beam forming vector prediction interference that obtains to the focus base station
Information can according to formula：Calculated；
Wherein,And λi, i=1 ..., m is representedDescending
The finite eigenvalues of arrangement, d0,kRepresent large scale fading coefficients of the macrocell base stations for user k, δkRepresent by Hot Spot
The QoS overflow probabilities of the user of service, it is general settable<0.05.
Preferably, in the scheme that the present embodiment is provided, the judgment mode for terminating treatment includes：
After the adjustment beam forming vector, methods described also includes：
Get the overflow probability of the service quality QoS of user equipment in the Hot Spot；
Judge the overflow probability of QOS of user equipment in the Hot Spot whether less than predetermined threshold value；
If being less than the predetermined threshold value, it is determined that complete the communication matter between the macro base station and the focus base station
Amount Coordination Treatment；
If being not less than the predetermined threshold value, continue executing with and obtained based on the beam forming vector prediction after adjustment
Operation to the interference information of the focus base station.
In addition, be transmitted by X2 interface between macro base station and focus base station, can also by macro base station with
The signaling of the X2 interface between focus base station is strengthened, as shown in Figure 4：The X2 signalings of each focus base station transmission need to increase ICIS
Information, the ICIS information of each focus base station is that m real number (total system is the m*S information content of real number) is transferred to grand base respectively
Stand；The X2 signalings of macro base station transmission need to increase ICIM information, and the ICIM information of macro base station is s*S real number, by X2 interface
It is transferred to each corresponding focus base station.
With reference to the framework that Fig. 2 is provided, the scheme that the present embodiment is provided is specifically described, service in macro base station
User's collection is combined intoAnd user's set of focus (access point) service is respectively Deng (can making for convenience grand
Honeycomb numbering is 0, and remaining Hot Spot numbering is followed successively by 1,2 ...).The maximum that macrocellular is allowed is while with frequency access customer number
Be m, with frequency access customer number be s while each focus base station allows, then pilot portion, it is necessary at least length for m it is up just
To hand over pilot tone be macrocell user, it is necessary at least length is for the up multiplexed pilot of s is that all hotspot users are public, and all focuses are small
Area's number is S.On this basis, when new Hot Spot is added, comprise the following steps that：
New Hot Spot (yellow cell in figure) is added in original extensive MIMO networks, it is necessary to be carried out to frame structure
Simple adjustment.Uplink pilot signal (UL-RS) can be divided into two parts：Grand user's orthogonal guide frequency and the focus of s length of m length
User's public guide frequency.
First, focus base station, such as MBS, the CSI of macrocell UE is estimated according to ascending pilot frequency, and according to each small of caching
The cross-layer interference ICIS information in area, carries out beamforming design.
2nd, after macro base station measures the large scale fading information of focus base station, while according to the big of remaining each focus base station
Yardstick fading information, and the beam forming vector that previous step is obtained, can estimate this launch scenario and Microcell generation is done
Disturb (ICIM), macro base station by X2 interface transmission come across area interference information to corresponding each focus base station.
3rd, the CSI of the CSI of micro-base station measurement macrocell user and home cell user, and according to the macrocell for caching
Cross-layer disturbs ICIM information, carries out beamforming design；
4th, according to beam forming vector, the interference that this launch scenario is produced to macrocell can be estimated, each micro-base station passes through
X2 interface transmits respective across area interference information (ICIS) to macro base station.
5th, grand, micro-base station carries out data transmission under current beam forming arrangements.
6th, iteration carries out five steps of the above, interrupted transmission data while, iteration updates beam forming solutions.
It can be seen that, by using such scheme, it becomes possible to carry out interference in grand small interval and estimate, by interface grand small
Interval transmission cross-layer interference information (ICI), the beam vector of macro base station and focus base station, Jin Erbao are adjusted based on interference information
The communication quality of user equipment is demonstrate,proved, so, it is to avoid the frequency spectrum money that auxiliary transmission brings is carried out using the equipment for increasing different frequency
Source wastes, only need to be increasing a signaling or an element using the original interface in base station, increase interface load that will not be more,
Just can effective lifting system spectrum efficiency.In addition, can also be controlled to QoS overflow probabilities using such scheme, enter one
Step ensure that the disposal ability of system.
Embodiment two,
Based on the scheme that above-described embodiment is provided, the system architecture shown in the present embodiment combination Fig. 2 is further described,
Specific steps referring to Fig. 5, including：
Step 501：Addressing is carried out to the region that the new focus base station accessed is covered according to the nonoverlapping principle of each cell,
The new focus base station accessed is set up by X2 interface with macro base station and is connected；Wherein, positioned at the focus base station of the new access
The CSI symbol h of the user equipment k in the j of coverage cellj,kRepresent, the beam forming vector for user equipment k in cell j
Use symbol wj,kRepresent.
Step 502：The user equipment that the new focus base station accessed is serviced uses public s length upstreams public guide frequency simultaneously
Send, the focus base station measurement obtains the large scale fading coefficients of the user equipment of the focus base station, and based on described big
Yardstick fading coefficients are calculated the large scale fading information of the focus base station；Local its CSI of focus base station measurement；Its waste heat
Point base stations cannot perceive the user of the focus base station of new access.
Step 503：The user of macro base station service is using m length upstreams orthogonal guide frequency and sends.Macro base station, focus base station are equal
Measurable its CSI.
Step 504：The macro base station measures the large scale fading information of the focus base station of new access, according to remaining
The large scale fading information of each focus base station, the new access focus base station by X2 interface transmission come across area interference letter
BreathWith the CSI for obtaining, foundation formula
SINR=S/ (IThis cell+IAcross cell+N)
Adjustment beam forming vector w0,k。
Adjacent cell interference information I is transmitted by X2 interfacekTo (s*S real number altogether) each corresponding focus base station, then ICIM
Expression is as follows
WhereinAnd λi, i=1 ..., m is representedDescending
The finite eigenvalues of arrangement, d0,kRepresent large scale fading coefficients of the macrocell base stations for user k, δkRepresent by Hot Spot
The QoS overflow probabilities of the user of service, it is general settable<0.05.
Step 505：Each focus base station is according to adjacent cell interference information Ik, and step 3) CSI that obtains, according to formula
SINR=S/ (IThis cell+IAcross cell+N)
Design beam forming vector wj,k, j ≠ 0, and will across area interference informationMacro base station is transferred to by X2 interface
(m*S real number altogether), wherein ICIS expressions are as follows
Iteration carries out above-mentioned steps, and the qos requirement of macrocell user can be finally completely secured, user k in Hot Spot
QoS demand is less than overflow probability δk。
Embodiment three,
A kind of communication control method is the embodiment of the invention provides, focus base station is applied to, as shown in fig. 6, methods described
Including：
Step 601：Set up with macro base station and be connected；
Step 602：Interference information of the macro base station to it is got from the macro base station by the connection；
Step 603：The beam forming vector of itself is adjusted to its interference information based on the macro base station；
Step 604：Based on the beam forming vector after adjustment, across the area interference information that obtains is estimated, and by the company
Receive and send across the area interference information to the macro base station.
Macro base station described in the present embodiment and focus base station are the base station under extensive MIMO heterogeneous networks, its
In, the macro base station and the focus base station are communicated frequently using same.It is understood that every time when needs are to part
When area carries out focus reinforcement, focus base station (access point) that can be by X2 interface directly by new addition be connected with macro base station,
And the interference of similar frequency bands communication and generation can be quantified and controlled.Such as, referring to Fig. 2, wherein one scope of macro base station covering is larger
Scope, focus base station 1 is the focus base station as new addition.
Further, the structure that the practice processes of the present embodiment are also needed to again to uplink data frames is defined, can be with
Including：The default first position of uplink data frames sets up the leading that M-bit length carries the user equipment transmission of macro base station
Frequency signal；In addition, the default second position setting S bit length in uplink data frames sets for carrying the user of focus base station
The uplink pilot signal that preparation is sent.Such as, referring to Fig. 3, uplink frame and downlink frame, uplink pilot signal position are divided into the frame structure
After upstream data. signals, wherein, M-bit length carries the uplink pilot signal that macro base station user equipment sends, and S bit is long
The uplink pilot signal that the user equipment of degree signaling bearer focus base station sends.
Before the connection set up by the X2 interface gets its interference information from the macro base station, methods described
Also include：
From the default second position of uplink data frames, the length that the user equipment of the focus BTS management is sent is detected
Spend the uplink pilot signal for S；Wherein, S is the integer more than or equal to 1；
Based on the uplink pilot signal, determine large scale fading information and send the large scale fading information to institute
State macro base station.
Wherein, the large scale fading information can be the large scale decline system by measuring whole user equipmenies respectively
Large scale fading information is made and obtained to large scale fading coefficients by number.
The beam forming vector that itself is adjusted based on the interference information, including：From default the of uplink data frames
At two positions, it is the uplink pilot signal of S to detect the length that the user equipment of the focus BTS management sends；Wherein, S is
Integer more than or equal to 1；Determine that channel status indicates CSI information based on the uplink pilot signal；Based on the interference information,
And CSI information, it is calculated signal to noise ratio；Based on the signal to noise ratio, the beam forming vector of itself is adjusted.Specifically, including：
Each focus base station is according to adjacent cell interference information Ik, and step 3) CSI that obtains, according to formula
SINR=S/ (IThis cell+IAcross cell+N)
Design beam forming vector wj,k, j ≠ 0, and will across area interference informationMacro base station is transferred to by X2 interface
(m*S real number altogether), wherein ICIS expressions are as follows
It can be seen that, by using such scheme, it becomes possible to carry out interference in grand small interval and estimate, by X2 interface grand micro-
Cross-layer interference information (ICI) is transmitted in minizone, and the beam vector of macro base station and focus base station is adjusted based on interference information, and then
Ensure the communication quality of user equipment, so, it is to avoid the frequency spectrum that auxiliary transmission brings is carried out using the equipment for increasing different frequency
The wasting of resources, only need to be increasing a signaling or an element using the original interface in base station, increase X2 interface that will not be more
Load, just can effective lifting system spectrum efficiency.In addition, QoS overflow probabilities can also be controlled using such scheme,
Further ensure the disposal ability of system.
Example IV,
A kind of macro base station is the embodiment of the invention provides, as shown in fig. 7, comprises：
Interface unit 71, is connected for being set up with focus base station, and getting the focus base station by the connection sends
Across area interference information；
Information acquisition unit 72, the large scale fading information for getting the focus base station；
Adjustment unit 73, for based on the large scale fading information and across the area interference information, adjusting wave beam
Forming vector；
Predicting unit 74, obtains doing the focus base station for the beam forming vector prediction after based on adjustment
Disturb information, by described in the linkup transmit to the interference information of focus base station to the focus base station side.
Macro base station described in the present embodiment and focus base station are the base station under extensive MIMO heterogeneous networks, its
In, the macro base station and the focus base station are communicated frequently using same.Working as every time needs to carry out focus to some areas
During reinforcement, focus base station (access point) that can be by X2 interface directly by new addition is connected with macro base station, and similar frequency bands are logical
The interference of letter and generation can be quantified and controlled.Such as, referring to Fig. 2, wherein macro base station covers the larger scope of a scope, focus base
1 is stood i.e. as the new focus base station for adding.
Further, the structure that the practice processes of the present embodiment are also needed to again to uplink data frames is defined, can be with
Including：The default first position of uplink data frames sets up the leading that M-bit length carries the user equipment transmission of macro base station
Frequency signal；In addition, the default second position setting S bit length in uplink data frames sets for carrying the user of focus base station
The uplink pilot signal that preparation is sent.Such as, referring to Fig. 3, uplink frame and downlink frame, uplink pilot signal position are divided into the frame structure
After upstream data. signals, wherein, M-bit length carries the uplink pilot signal that macro base station user equipment sends, and S bit is long
The uplink pilot signal that the user equipment of degree signaling bearer focus base station sends.
Accordingly, information acquisition unit 72, for from the default first position of uplink data frames, detecting self-management
The length sent of user equipment be the uplink pilot signal of M；From the default second position of uplink data frames, detect described
The length that the user equipment of focus BTS management is sent is the uplink pilot signal of S；
Wherein, M and S are the integer more than or equal to 1, and the first position is do not possess identical number with the second place
According to two positions of position.
According to Fig. 3 as can be seen that first position and the second place can for adjacent two, it is corresponding with many bits
Position.
Further, information acquisition unit 72, the user equipment of the focus BTS management for being obtained based on detection
The length of transmission is the uplink pilot signal of S, determines the corresponding large scale fading information in the focus base station；
Adjustment unit, the length that the user equipment of the self-management for being obtained based on detection is sent is the ascending pilot frequency of M
Signal and the large scale fading information, are calculated signal to noise ratio；Beam forming vector is adjusted based on the signal to noise ratio.
Specifically, can be the large scale fading information of the focus base station that the macro base station measures new access, root
According to the large scale fading information of remaining each focus base station, the new access focus base station by X2 interface transmission come across cell
Interference informationThe length sent with the user equipment of the self-management obtained based on detection is obtained for the uplink pilot signal of M
Channel status indicate (CSI), according to below equation adjustment beam forming vector w0,k
SINR=S/ (IThis cell+IAcross cell+N)。
Further, it is described based on adjustment after the beam forming vector prediction interference that obtains to the focus base station
Information can according to formula：Calculated；
Wherein,And λi, i=1 ..., m is representedDescending
The finite eigenvalues of arrangement, d0,kRepresent large scale fading coefficients of the macrocell base stations for user k, δkRepresent by Hot Spot
The QoS overflow probabilities of the user of service, it is general settable<0.05.
Preferably, in the scheme that the present embodiment is provided, the judgment mode for terminating treatment includes：
The predicting unit, the overflow probability of the service quality QoS for getting user equipment in the Hot Spot；
Judge the overflow probability of QOS of user equipment in the Hot Spot whether less than predetermined threshold value；If being less than the pre- gating
Limit value, it is determined that complete the communication quality Coordination Treatment between the macro base station and the focus base station；If not less than described
Predetermined threshold value, then continue executing with the interference obtained based on the beam forming vector prediction after adjustment to the focus base station
The operation of information.
In addition, be transmitted by X2 interface between macro base station and focus base station, can also by macro base station with
The signaling of the X2 interface between focus base station is strengthened, as shown in Figure 4：The X2 signalings of each focus base station transmission need to increase ICIS
Information, the ICIS information of each focus base station is that m real number (total system is the m*S information content of real number) is transferred to grand base respectively
Stand；The X2 signalings of macro base station transmission need to increase ICIM information, and the ICIM information of macro base station is s*S real number, by X2 interface
It is transferred to each corresponding focus base station.
It can be seen that, by using such scheme, it becomes possible to carry out interference in grand small interval and estimate, by X2 interface grand micro-
Cross-layer interference information (ICI) is transmitted in minizone, and the beam vector of macro base station and focus base station is adjusted based on interference information, and then
Ensure the communication quality of user equipment, so, it is to avoid the frequency spectrum that auxiliary transmission brings is carried out using the equipment for increasing different frequency
The wasting of resources, only need to be increasing a signaling or an element using the original interface in base station, increase X2 interface that will not be more
Load, just can effective lifting system spectrum efficiency.In addition, QoS overflow probabilities can also be controlled using such scheme,
Further ensure the disposal ability of system.
Embodiment five,
A kind of focus base station, as shown in figure 8, the focus base station includes：
Interfacing unit 81, is connected for being set up with macro base station；Got from the macro base station by the connection grand
Interference information of the base station to it；
Adjustment unit 82, for adjusting the beam forming vector of itself to its interference information based on the macro base station；
Predicting unit 83, for based on the beam forming vector after adjustment, estimating and obtaining across area interference information, and pass through
Across area interference information described in the linkup transmit is to the macro base station.
Macro base station described in the present embodiment and focus base station are the base station under extensive MIMO heterogeneous networks, its
In, the macro base station and the focus base station are communicated frequently using same.It is understood that every time when needs are to part
When area carries out focus reinforcement, focus base station (access point) that can be by X2 interface directly by new addition be connected with macro base station,
And the interference of similar frequency bands communication and generation can be quantified and controlled.Such as, referring to Fig. 2, wherein one scope of macro base station covering is larger
Scope, focus base station 1 is the focus base station as new addition.
Further, the structure that the practice processes of the present embodiment are also needed to again to uplink data frames is defined, can be with
Including：The default first position of uplink data frames sets up the leading that M-bit length carries the user equipment transmission of macro base station
Frequency signal；In addition, the default second position setting S bit length in uplink data frames sets for carrying the user of focus base station
The uplink pilot signal that preparation is sent.Such as, referring to Fig. 3, uplink frame and downlink frame, uplink pilot signal position are divided into the frame structure
After upstream data. signals, wherein, M-bit length carries the uplink pilot signal that macro base station user equipment sends, and S bit is long
The uplink pilot signal that the user equipment of degree signaling bearer focus base station sends.
The focus base station also includes：
Detection unit 84, for the default second position from uplink data frames, detects the focus BTS management
The length that user equipment is sent is the uplink pilot signal of S；Wherein, S is the integer more than or equal to 1；
Accordingly, the adjustment unit, for based on the uplink pilot signal, determining large scale fading information, concurrent
Send the large scale fading information to the macro base station.
Wherein, the large scale fading information can be the large scale decline system by measuring whole user equipmenies respectively
Large scale fading information is made and obtained to large scale fading coefficients by number.
The beam forming vector that itself is adjusted based on the interference information, including：From default the of uplink data frames
At two positions, it is the uplink pilot signal of S to detect the length that the user equipment of the focus BTS management sends；Wherein, S is
Integer more than or equal to 1.
The adjustment unit, for determining that channel status indicates CSI information based on the uplink pilot signal；Based on described
Interference information and CSI information, are calculated signal to noise ratio；Based on the signal to noise ratio, the beam forming vector of itself is adjusted.Tool
Body, including：Each focus base station is according to adjacent cell interference information Ik, the CSI of acquisition, according to formula
SINR=S/ (IThis cell+IAcross cell+N)
Design beam forming vector wj,k, j ≠ 0, and will across area interference informationMacro base station is transferred to by X2 interface
(m*S real number altogether), wherein ICIS expressions are as follows
It can be seen that, by using such scheme, it becomes possible to carry out interference in grand small interval and estimate, by interface grand small
Interval transmission cross-layer interference information (ICI), the beam vector of macro base station and focus base station, Jin Erbao are adjusted based on interference information
The communication quality of user equipment is demonstrate,proved, so, it is to avoid the frequency spectrum money that auxiliary transmission brings is carried out using the equipment for increasing different frequency
Source wastes, only need to be increasing a signaling or an element using the original interface in base station, increase interface load that will not be more,
Just can effective lifting system spectrum efficiency.In addition, can also be controlled to QoS overflow probabilities using such scheme, enter one
Step ensure that the disposal ability of system.
Embodiment six,
A kind of communication control system is present embodiments provided, as shown in figure 9, including：
Macro base station 91, is connected for being set up with focus base station, gets what the focus base station was sent by the connection
Across area interference information；Get the large scale fading information of the focus base station；Based on the large scale fading information and
Across the area interference information, adjusts beam forming vector；Beam forming vector prediction after based on adjustment is obtained to institute
State the interference information of focus base station, by described in the linkup transmit to the interference information of focus base station to the focus base station
Side；
Focus base station 92, for getting interference information of the macro base station to it from the macro base station；Based on described grand
Base station adjusts the beam forming vector of itself to its interference information；Based on the beam forming vector after adjustment, estimate obtain across
Area interference information, and by across area interference information described in the linkup transmit to the macro base station.
The function of above-mentioned macro base station and focus base station is same as the previously described embodiments, is not discussed here.
Further, the system also includes at least one user equipment；
The user equipment 93, for when in macro base station coverage, in the default first of uplink data frames
Place is put, it is the uplink pilot signal of M to send length；
When in focus base station range, in the default second position of uplink data frames, it is S's to send length
Uplink pilot signal；
Wherein, M and S are the integer more than or equal to 1, and the first position is do not possess identical number with the second place
According to two positions of position.
It can be seen that, by using such scheme, it becomes possible to carry out interference in grand small interval and estimate, by X2 interface grand micro-
Cross-layer interference information (ICI) is transmitted in minizone, and the beam vector of macro base station and focus base station is adjusted based on interference information, and then
Ensure the communication quality of user equipment, so, it is to avoid the frequency spectrum that auxiliary transmission brings is carried out using the equipment for increasing different frequency
The wasting of resources, only need to increase a signaling or an element using the original interface in base station, and increase interface that will not be more is born
Carry, just can effective lifting system spectrum efficiency.In addition, can also be controlled to QoS overflow probabilities using such scheme, enter
One step ensure that the disposal ability of system.
If integrated module described in the embodiment of the present invention is to realize in the form of software function module and as independent product
When product are sold or are used, it is also possible to which storage is in a computer read/write memory medium.Based on such understanding, the present invention is real
Applying the part that the technical scheme of example substantially contributes to prior art in other words can be embodied in the form of software product
Come, the computer software product is stored in a storage medium, including some instructions are used to so that a computer equipment (can
Being personal computer, the network equipment or network equipment etc.) perform whole or the portion of each embodiment methods described of the invention
Point.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), deposit at random
Access to memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
So, the embodiment of the present invention is not restricted to any specific hardware and software combination.
The above, only presently preferred embodiments of the present invention is not intended to limit the scope of the present invention.
Claims (18)
1. a kind of communication control method, is applied to macro base station, it is characterised in that methods described includes：
Set up with focus base station and be connected, across the area interference information that the focus base station is sent is got by the connection；
Get the large scale fading information of the focus base station；
Based on the large scale fading information and across the area interference information, beam forming vector is adjusted；
Beam forming vector prediction after based on adjustment obtains the interference information to the focus base station, by the connection
Send the interference information to focus base station to the focus base station side.
2. method according to claim 1, it is characterised in that after the adjustment beam forming vector, methods described is also
Including：
Get the overflow probability of the service quality QoS of user equipment in the Hot Spot；
Judge the overflow probability of QOS of user equipment in the Hot Spot whether less than predetermined threshold value；
If being less than the predetermined threshold value, it is determined that completion is processed；
If being not less than the predetermined threshold value, continue executing with and obtained to institute based on the beam forming vector prediction after adjustment
State the operation of the interference information of focus base station.
3. method according to claim 1, it is characterised in that methods described also includes：
From the default first position of uplink data frames, length that the user equipment of self-management sends is detected up for M
Pilot signal；
From the default second position of uplink data frames, detecting the length that the user equipment of the focus BTS management sends is
The uplink pilot signal of S；
Wherein, M and S are the integer more than or equal to 1, and the first position is do not possess identical data position with the second place
Two positions.
4. method according to claim 3, it is characterised in that the large scale decline letter for getting the focus base station
Breath, including：
The length that the user equipment of the focus BTS management obtained based on detection is sent is the uplink pilot signal of S, it is determined that
The corresponding large scale fading information in the focus base station；
Accordingly, it is described based on the large scale fading information and across the area interference information, adjustment beam forming arrow
Amount, including：
The length that the user equipment of the self-management obtained based on detection is sent is the uplink pilot signal and the big chi of M
Degree fading information, is calculated signal to noise ratio；
Beam forming vector is adjusted based on the signal to noise ratio.
5. the method according to claim any one of 1-4, it is characterised in that described foundation with focus base station is connected, including：
Set up with focus base station by X2 interface and be connected.
6. a kind of communication control method, is applied to focus base station, it is characterised in that methods described includes：
Set up with macro base station and be connected；
Interference information of the macro base station to it is got from the macro base station by the connection；
The beam forming vector of itself is adjusted to its interference information based on the macro base station；
Based on the beam forming vector after adjustment, estimate across the area interference information that obtains, and by described in the linkup transmit across
Area interference information is to the macro base station.
7. method according to claim 6, it is characterised in that it is described by connect got from the macro base station it is described grand
Before base station is to its interference information, methods described also includes：
From the default second position of uplink data frames, detecting the length that the user equipment of the focus BTS management sends is
The uplink pilot signal of S；Wherein, S is the integer more than or equal to 1；
Based on the uplink pilot signal, determine large scale fading information and send the large scale fading information to described grand
Base station.
8. method according to claim 7, it is characterised in that the interference information adjustment based on the macro base station to it
The beam forming vector of itself, including：
Determine that channel status indicates CSI information based on the uplink pilot signal；
Based on the macro base station to its interference information and CSI information, signal to noise ratio is calculated；
Based on the signal to noise ratio, the beam forming vector of itself is adjusted.
9. a kind of macro base station, it is characterised in that including：
Interface unit, be connected for being set up with focus base station, by it is described connect get that the focus base station sends across small
Area's interference information；
Information acquisition unit, the large scale fading information for getting the focus base station；
Adjustment unit, for based on the large scale fading information and across the area interference information, adjustment beam forming arrow
Amount；
Predicting unit, obtains believing the interference of the focus base station for the beam forming vector prediction after based on adjustment
Breath, by described in the linkup transmit to the interference information of focus base station to the focus base station side.
10. macro base station according to claim 9, it is characterised in that
The predicting unit, the overflow probability of the service quality QoS for getting user equipment in the Hot Spot；Judge
Whether the overflow probability of the QOS of user equipment is less than predetermined threshold value in the Hot Spot；If being less than the predetermined threshold value,
Then determine completion treatment；If being not less than the predetermined threshold value, continue executing with based on the beam forming vector after adjustment
Prediction obtains the operation of the interference information to the focus base station.
11. macro base stations according to claim 9, it is characterised in that
Information acquisition unit, for from the default first position of uplink data frames, detecting the user equipment hair of self-management
The length come is the uplink pilot signal of M；From the default second position of uplink data frames, the focus BTS management is detected
The length sent of user equipment be the uplink pilot signal of S；
Wherein, M and S are the integer more than or equal to 1, and the first position is do not possess identical data position with the second place
Two positions.
12. macro base stations according to claim 11, it is characterised in that information acquisition unit, for what is obtained based on detection
The length that the user equipment of the focus BTS management sends is the uplink pilot signal of S, determines that the focus base station is corresponding
Large scale fading information；
Accordingly, the adjustment unit, the length that the user equipment of the self-management for being obtained based on detection is sent is M's
Row pilot signal and the large scale fading information, are calculated signal to noise ratio；Based on signal to noise ratio adjustment beam forming arrow
Amount.
13. macro base station according to claim any one of 9-12, it is characterised in that
The interface unit, is connected for leading to X2 interface with the foundation of focus base station.
14. a kind of focus base stations, it is characterised in that the focus base station includes：
Interfacing unit, is connected for being set up with macro base station；Macro base station pair is got from the macro base station by the connection
Its interference information；
Adjustment unit, for adjusting the beam forming vector of itself to its interference information based on the macro base station；
Predicting unit, for based on the beam forming vector after adjustment, estimating across the area interference information that obtains, and by the company
Receive and send across the area interference information to the macro base station.
15. focus base stations according to claim 14, it is characterised in that the focus base station also includes：
Detection unit, for the default second position from uplink data frames, the user for detecting the focus BTS management sets
The length that preparation is come is the uplink pilot signal of S；Wherein, S is the integer more than or equal to 1；
Accordingly, the adjustment unit, for based on the uplink pilot signal, determining large scale fading information and sending institute
State large scale fading information to the macro base station.
16. focus base stations according to claim 15, it is characterised in that the adjustment unit, for based on described up
Pilot signal determines that channel status indicates CSI information；Based on the macro base station to its interference information and CSI information, calculate
Obtain signal to noise ratio；Based on the signal to noise ratio, the beam forming vector of itself is adjusted.
17. a kind of communication control systems, it is characterised in that the system includes：
Macro base station, be connected for being set up with focus base station, by it is described connect get that the focus base station sends across cell
Interference information；Get the large scale fading information of the focus base station；Based on the large scale fading information and it is described across
Area interference information, adjusts beam forming vector；Beam forming vector prediction after based on adjustment is obtained to the focus
The interference information of base station, by described in the linkup transmit to the interference information of focus base station to the focus base station side；
Focus base station, for getting interference information of the macro base station to it from the macro base station；Based on the macro base station pair
Its interference information adjusts the beam forming vector of itself；Based on the beam forming vector after adjustment, estimate and obtain dry across cell
Information is disturbed, and by across area interference information described in the linkup transmit to the macro base station.
18. systems according to claim 17, it is characterised in that the system also includes at least one user equipment；
The user equipment, for when in macro base station coverage, in the default first position of uplink data frames, hair
Send the uplink pilot signal that length is M；When in focus base station range, in the default second place of uplink data frames
Place, it is the uplink pilot signal of S to send length；
Wherein, M and S are the integer more than or equal to 1, and the first position is do not possess identical data position with the second place
Two positions.
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| CN103138822A (en) * | 2011-12-05 | 2013-06-05 | 华为技术有限公司 | Method and device of signal transmission |
| CN103297981A (en) * | 2012-03-05 | 2013-09-11 | 华为技术有限公司 | Method and device for interference coordination between base stations |
| CN103391552A (en) * | 2012-05-11 | 2013-11-13 | 北京邮电大学 | Uplink interference coordination method and device of layered heterogeneous wireless network |
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