CN106888483B - A kind of communication control method, macro base station, hot spot base station and system - Google Patents
A kind of communication control method, macro base station, hot spot base station and system Download PDFInfo
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- CN106888483B CN106888483B CN201610235772.2A CN201610235772A CN106888483B CN 106888483 B CN106888483 B CN 106888483B CN 201610235772 A CN201610235772 A CN 201610235772A CN 106888483 B CN106888483 B CN 106888483B
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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
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Abstract
The invention discloses a kind of communication control method, macro base station, hot spot base station and systems, and wherein method includes: to establish connection with hot spot base station, get across the area interference information sent the hot spot base station by the connection；Get the large-scale fading information of the hot spot base station；Based on the large-scale fading information and across the area interference information, beam forming vector is adjusted；It predicts to obtain the interference information to the hot spot base station based on the beam forming vector adjusted, the interference information to hot spot base station is sent to the hot spot base station side by the connection.
Description
Technical field
The present invention relates to the BTS management technologies more particularly to a kind of communication control method, macro base station, heat in the communications field
Point base stations and system.
Background technique
With the high speed development of wireless communication, mobile network user increasingly increases 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 the availability of frequency spectrum is higher,
Network total energy efficiency is high.However, simple extensive MIMO communication system, network structure is relatively simple, cannot expire completely
Demand of the sufficient user for different type communication service, therefore the addition Hot Spot appropriate in extensive MIMO will substantially
The overall performance of the lifting system of degree.In extensive MIMO communication system, since tdd communication system is believed with uplink downlink
The characteristic of road reciprocity, base station end carry out channel state information (CSI) by the ascending pilot frequency that each user of estimation sends and estimate, and according to
CSI carries out downlink beamforming accordingly.
To in extensive MIMO communication system some areas carry out hot spot enhancing when, can by configure low-power,
Cheap small base station (hot spot) promotes a certain range of communication quality, but the strategy is usually used with macrocellular different frequency range
It is communicated, such as builds Wi-Fi hotspot indoors.This method, which is equivalent to, wastes additional frequency spectrum resource, can not promote macro bee
The availability of frequency spectrum of nest frequency range.
The existing mode that Wi-Fi hotspot is established in macrocellular needs to utilize additional frequency range.If directly in macrocellular
The problems such as foundation then can generate inter-cell interference with frequency hot spot, pilot resources are redistributed, current certain methods are to interference
Rejection ability is insufficient, and is difficult to carry out quantitative control to the interference of generation, significantly limits network and total rate；Or it needs
Larger amount of data are transmitted in X2 interface, form greatly passback pressure.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of communication control method, macro base station, hot spot base station and system,
The above-mentioned problems in the prior art can at least be solved.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
The embodiment of the present invention provides a kind of communication control method, is applied to macro base station, comprising:
Connection is established with hot spot base station, across the area interference letter sent the hot spot base station is got by the connection
Breath；
Get the large-scale fading information of the hot spot base station；
Based on the large-scale fading information and across the area interference information, beam forming vector is adjusted；
It predicts to obtain the interference information to the hot spot base station based on the beam forming vector adjusted, by described
Connection sends the interference information to hot spot base station to the hot spot base station side.
The embodiment of the present invention provides a kind of communication control method, is applied to hot spot base station, which comprises
Connection is established by interface and macro base station；
Connection is established with macro base station；
The interference information for getting the macro base station to it from the macro base station is connected by described；
The beam forming vector of itself is adjusted based on interference information of the macro base station to it；
Based on beam forming vector adjusted, estimate to obtain across area interference information, and by connection send it is described across
Area interference information is to the macro base station.
The embodiment of the present invention provides a kind of macro base station, comprising:
Interface unit gets what the hot spot base station was sent by the connection for establishing connection with hot spot base station
Across area interference information；
Information acquisition unit, for getting the large-scale fading information of the hot spot base station；
Adjustment unit, for be based on the large-scale fading information and across the area interference information, adjustment wave beam at
Shape vector；
Predicting unit obtains the interference to the hot spot base station for predicting based on the beam forming vector adjusted
Information sends the interference information to the hot spot base station to the hot spot base station side by the connection.
The embodiment of the present invention provides a kind of hot spot base station, and the hot spot base station includes:
Interfacing unit, for establishing connection with macro base station；Macro base is got from the macro base station by the connection
The interference information stood to it；
Adjustment unit, for adjusting itself beam forming vector based on interference information of the macro base station to it；
Predicting unit is estimated to obtain across area interference information, and pass through institute for being based on beam forming vector adjusted
It states connection and sends across the area interference information to the macro base station.
The embodiment of the present invention provides a kind of communication control system, the system comprises:
Macro base station, for establishing connection with hot spot base station, by the connection get that the hot spot base station sends across
Area interference information；Get the large-scale fading information of the hot spot base station；Based on the large-scale fading information, Yi Jisuo
Across area interference information is stated, beam forming vector is adjusted；It predicts to obtain to described based on the beam forming vector adjusted
The interference information of hot spot base station sends the interference information to hot spot base station to the hot spot base station side by the connection；
Hot spot base station, the interference information for getting the macro base station to it from the macro base station；Based on the macro base
It stands and adjusts the beam forming vector of itself to its interference information；Based on beam forming vector adjusted, estimate to obtain across small
Area's interference information, and across the area interference information is sent to the macro base station by the connection.
The embodiment of the invention provides communication control method, macro base station, hot spot base station and systems, it will be able in macro Microcell
Between carry out interference and estimate, in macro small section transmitting cross-layer interference information (ICI), based on interference information adjustment macro base station and heat
The beam vector of point base stations, so guarantee user equipment communication quality, in this way, avoid using increase different frequency equipment into
The waste of row auxiliary transmission bring frequency spectrum resource only need to increase a signaling or an element using the original interface in base station,
Increase interface load that will not be more, can effective lifting system spectrum efficiency.
Detailed description of the invention
Fig. 1 is communication control method of embodiment of the present invention flow diagram one；
Fig. 2 is system architecture of embodiment of the present invention schematic diagram of a scenario；
Fig. 3 is frame structure of embodiment of the present invention composed structure schematic diagram；
The signalling diagram of X2 interface of the Fig. 4 between macro base station of the embodiment of the present invention and hot spot base station；
Fig. 5 is communication control method of embodiment of the present invention flow diagram two；
Fig. 6 is communication control method of embodiment of the present invention flow diagram three；
Fig. 7 is macro base station of embodiment of the present invention composed structure schematic diagram；
Fig. 8 is that hot spot of embodiment of the present invention base station forms structural schematic diagram；
Fig. 9 is system of embodiment of the present invention composed structure schematic diagram.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is further described in more detail.
Embodiment one,
The embodiment of the invention provides a kind of communication control methods, are applied to macro base station, as shown in Figure 1, the method packet
It includes:
Step 101: establish connection with hot spot base station, by the connection get that the hot spot base station sends across cell
Interference information；
Step 102: getting the large-scale fading information of the hot spot base station；
Step 103: being based on the large-scale fading information and across the area interference information, adjustment beam forming arrow
Amount；
Step 104: it predicts to obtain the interference information to the hot spot base station based on the beam forming vector adjusted,
The interference information to hot spot base station is sent to the hot spot base station side by the connection.
Macro base station described in the present embodiment and hot spot base station are the base station under extensive MIMO heterogeneous network,
In, the macro base station and the hot spot base station are all made of and are communicated frequently together.
It is understood that the trigger condition for executing above-mentioned steps 101 in the present embodiment can be with are as follows: every time when needing to play a game
It, can be by X2 interface directly by newly added hot spot base station (access point) and macro base station phase when portion area carries out hot spot reinforcement
Even, and the interference of similar frequency bands communication and generation can be controlled quantitatively.For example, referring to fig. 2, wherein macro base station cover a range compared with
Big range, hot spot base station 1 is i.e. as the hot spot base station being newly added.
Further, the practice processes of the present embodiment also need again to be defined the structure of uplink data frames, can be with
Include: uplink data frames default first position at setting M-bit length carry macro base station user equipment send uplink lead
Frequency signal；In addition, being set in the user that the default second place of uplink data frames setting S bit length is used to carry hot spot base station
The uplink pilot signal that preparation is sent.For example, being divided into uplink frame and downlink frame, uplink pilot signal position in the frame structure referring to Fig. 3
After upstream data signals, wherein M-bit length carries the uplink pilot signal that macro base station user equipment is sent, and S bit is long
Spend the uplink pilot signal that the user equipment of signaling bearer hot spot base station is sent.
Correspondingly, the method also includes: from the default first position of uplink data frames, detect the use of self-management
The length that family equipment is sent is the uplink pilot signal of M；From the default second place of uplink data frames, the hot spot is detected
The length that the user equipment of BTS management is sent is the uplink pilot signal of S；
Wherein, M and S is the integer more than or equal to 1, and the first position and the second position are not have identical number
According to two positions of position.
According to Fig. 3 as can be seen that first position and the second position can be for two adjacent positions, comprising more bits
Data bit.
Further, the large-scale fading information for getting the hot spot base station, comprising:
The uplink pilot signal that length based on the user equipment transmission for detecting the obtained hot spot BTS management is S,
Determine the corresponding large-scale fading information in the hot spot base station；
Correspondingly, described be based on the large-scale fading information and across the area interference information, beam forming is adjusted
Vector, comprising:
Uplink pilot signal that the length that the user equipment of self-management obtained based on detection is sent is 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, the large-scale fading information for the hot spot base station newly accessed, root can be measured for the macro base station
According to the large-scale fading information of remaining each hot spot base station, the new access hot spot base station by X2 interface transmitting come across cell
Interference informationThe uplink pilot signal that the length sent with the user equipment of the self-management obtained based on detection is M obtains
Channel status indicate (CSI), according to following formula adjust beam forming vector w0,k
SINR=S/ (IThis cell+IAcross cell+N)。
Further, described to predict to obtain the interference to the hot spot base station based on the beam forming vector adjusted
Information can according to formula:It is calculated；
Wherein,And λi, i=1 ..., m is indicatedDescending
The finite eigenvalues of arrangement, d0,kIndicate large-scale fading coefficient of the macrocell base stations for user k, δkIt indicates by Hot Spot
The QoS overflow probability of the user of service, generally settable < 0.05.
Preferably, in scheme provided in this embodiment, the judgment mode ended processing includes:
After the adjustment beam forming vector, the method also includes:
Get the overflow probability of the service quality QoS of user equipment in the Hot Spot；
Judge whether the overflow probability of the QOS of user equipment in the Hot Spot is 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 hot spot base station
Measure Coordination Treatment；
If being not less than the predetermined threshold value, continues to execute and predict to obtain based on the beam forming vector adjusted
Operation to the interference information of the hot spot base station.
In addition, transmitted between macro base station and hot spot base station by X2 interface, can also by macro base station with
The signaling of X2 interface between hot spot base station is reinforced, as shown in Figure 4: the X2 signaling of each hot spot base station transmitting needs to increase ICIS
Information, the ICIS information of each hot spot base station are that m real number (information content that total system is m*S real number) is transferred to macro base respectively
It stands；The X2 signaling of macro base station transmitting needs to increase ICIM information, and the ICIM information of macro base station is s*S real number, passes through X2 interface
It is transferred to each corresponding hot spot base station.
Below with reference to the framework that Fig. 2 is provided, scheme provided in this embodiment is specifically described, is serviced in macro base station
User's collection is combined intoAnd user's set of hot spot (access point) service is respectively Deng (can enabling for convenience macro
Honeycomb number is 0, remaining Hot Spot number is followed successively by 1,2 ...).Macrocellular allow it is maximum and meanwhile with frequency access customer number
With frequency access customer number be s while each hot spot base station allows for m, then pilot portion, need at least length be the uplink of m just
Friendship pilot tone is macrocell user, and needing the uplink multiplexed pilot that at least length is s is that all hotspot users are public, and all hot spots are small
Area's number is S.On this basis, the Hot Spot new when addition, the specific steps are as follows:
New Hot Spot (yellow cell in figure) is added in original extensive MIMO network, needs to carry out frame structure
Simple adjustment.Uplink pilot signal (UL-RS) can be divided into two parts: the hot spot of macro the user's orthogonal guide frequency and s length of m length
User's public guide frequency.
One, hot spot base station, such as MBS estimate the CSI of macrocell UE according to ascending pilot frequency, and according to each small of caching
The cross-layer in area interferes ICIS information, carries out beamforming design.
Two, after macro base station measures the large-scale fading information of hot spot base station, while according to the big of remaining each hot spot base station
The beam forming vector that scale fading information and previous step obtain, can estimate this launch scenario and do to Microcell generation
Disturb (ICIM), macro base station by X2 interface transmitting come across area interference information to corresponding each hot spot base station.
Three, the CSI of the CSI of micro-base station measurement macrocell user and home cell user, and according to the macrocell of caching
Cross-layer interferes ICIM information, carries out beamforming design；
Four, according to beam forming vector, the interference that this launch scenario generates macrocell can be estimated, each micro-base station passes through
X2 interface transmits respective across area interference information (ICIS) to macro base station.
Five, macro, micro-base station carries out data transmission under current beam forming arrangements.
Six, iteration carries out above five steps, interrupted transmission data while, iteration updates beam forming solutions.
As it can be seen that by using above scheme, it will be able to carry out interference in macro small section and estimate, by interface macro small
Cross-layer interference information (ICI) is transmitted in section, and the beam vector of macro base station and hot spot base station, Jin Erbao are adjusted based on interference information
The communication quality of user equipment is demonstrate,proved, in this way, avoiding carrying out auxiliary transmission bring frequency spectrum money using the equipment for increasing different frequency
Source waste only need to increase a signaling or an element using the original interface in base station, increase interface load that will not be more,
Can effectively lifting system spectrum efficiency.In addition, can also control using the above scheme QoS overflow probability, into one
Step ensure that the processing capacity of system.
Embodiment two,
The scheme provided based on the above embodiment, the system architecture of the present embodiment as shown in connection with fig. 2 are further described,
Specific steps are referring to Fig. 5, comprising:
Step 501: addressing is carried out according to the region that the nonoverlapping principle of each cell covers the hot spot base station newly accessed,
Connection is established by X2 interface and macro base station in the hot spot base station newly accessed；Wherein, positioned at the hot spot base station of the new access
The CSI symbol h of user equipment k in the j of coverage cellj,kIt indicates, the beam forming vector for user equipment k in cell j
With symbol wj,kIt indicates.
Step 502: the user equipment that the hot spot base station newly accessed is serviced uses common s length upstream public guide frequency simultaneously
It sends, the hot spot base station measurement obtains the large-scale fading coefficient of the user equipment of the hot spot base station, and based on described big
The large-scale fading information of the hot spot base station is calculated in scale fading coefficients；Local its CSI of hot spot base station measurement；Its waste heat
Point base stations can not perceive the user for the hot spot base station newly accessed.
Step 503: the user of macro base station service is using m length upstream orthogonal guide frequency and sends.Macro base station, hot spot base station are equal
It can measure its CSI.
Step 504: the macro base station measures the large-scale fading information for the hot spot base station newly accessed, according to remaining
The large-scale fading information of each hot spot base station, the new access hot spot base station by X2 interface transmitting come across area interference letter
BreathWith the CSI of acquisition, foundation formula
SINR=S/ (IThis cell+IAcross cell+N)
Adjust beam forming vector w0,k。
Adjacent cell interference information I is transmitted by X2 interfacekTo (amount to s*S real number) each corresponding hot spot base station, then ICIM
Expression is as follows
WhereinAnd λi, i=1 ..., m is indicatedDescending
The finite eigenvalues of arrangement, d0,kIndicate large-scale fading coefficient of the macrocell base stations for user k, δkIt indicates by Hot Spot
The QoS overflow probability of the user of service, generally settable < 0.05.
Step 505: each hot spot base station is according to adjacent cell interference information IkAnd the CSI that step 3) 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
(amounting to m*S real number), wherein ICIS expression is as follows
Iteration carries out above-mentioned steps, the qos requirement of macrocell user can finally be completely secured, user k in Hot Spot
QoS demand is less than overflow probability δk。
Embodiment three,
The embodiment of the invention provides a kind of communication control methods, are applied to hot spot base station, as shown in fig. 6, the method
Include:
Step 601: establishing connection with macro base station；
Step 602: connecting the interference information for getting the macro base station to it from the macro base station by described；
Step 603: the beam forming vector of itself is adjusted based on interference information of the macro base station to it；
Step 604: being based on beam forming vector adjusted, estimate to obtain across area interference information, and pass through the company
Across the area interference information is received and sent to the macro base station.
Macro base station described in the present embodiment and hot spot base station are the base station under extensive MIMO heterogeneous network,
In, the macro base station and the hot spot base station are all made of and are communicated frequently together.It is understood that every time when needs are to part
When area carries out hot spot reinforcement, directly newly added hot spot base station (access point) can be connected with macro base station by X2 interface,
And the interference of similar frequency bands communication and generation can be controlled quantitatively.For example, referring to fig. 2, wherein it is larger to cover a range for macro base station
Range, hot spot base station 1 i.e. as the hot spot base station being newly added.
Further, the practice processes of the present embodiment also need again to be defined the structure of uplink data frames, can be with
Include: uplink data frames default first position at setting M-bit length carry macro base station user equipment send uplink lead
Frequency signal；In addition, being set in the user that the default second place of uplink data frames setting S bit length is used to carry hot spot base station
The uplink pilot signal that preparation is sent.For example, being divided into uplink frame and downlink frame, uplink pilot signal position in the frame structure referring to Fig. 3
After upstream data signals, wherein M-bit length carries the uplink pilot signal that macro base station user equipment is sent, and S bit is long
Spend the uplink pilot signal that the user equipment of signaling bearer hot spot base station is sent.
Before the connection established by the X2 interface gets its interference information from the macro base station, the method
Further include:
From the default second place of uplink data frames, the length that the user equipment of the hot spot BTS management is sent is detected
Degree is the uplink pilot signal of S；Wherein, S is the integer more than or equal to 1；
Based on the uplink pilot signal, determines 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 to pass through the large-scale fading system for measuring whole user equipmenies respectively
Number, makees and obtains large-scale fading information for large-scale fading coefficient.
The beam forming vector that itself is adjusted based on the interference information, comprising: from default the of uplink data frames
At two positions, the uplink pilot signal that the length that the user equipment of the hot spot BTS management is sent is S is detected；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, signal-to-noise ratio is calculated；Based on the signal-to-noise ratio, the beam forming vector of itself is adjusted.Specifically, including:
Each hot spot base station is according to adjacent cell interference information IkAnd the CSI that step 3) 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
(amounting to m*S real number), wherein ICIS expression is as follows
As it can be seen that by using above scheme, it will be able to carry out interference in macro small section and estimate, by X2 interface macro micro-
Cross-layer interference information (ICI) is transmitted in minizone, the beam vector of macro base station and hot spot base station is adjusted based on interference information, in turn
Guarantee the communication quality of user equipment, in this way, avoiding carrying out auxiliary transmission bring frequency spectrum 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, increase X2 interface that will not be more
Load, can effectively lifting system spectrum efficiency.In addition, QoS overflow probability can also be controlled using the above scheme,
Further ensure the processing capacity of system.
Example IV,
The embodiment of the invention provides a kind of macro base stations, as shown in fig. 7, comprises:
Interface unit 71 gets the hot spot base station by the connection and sends for establishing connection with hot spot base station
Across area interference information；
Information acquisition unit 72, for getting the large-scale fading information of the hot spot base station；
Adjustment unit 73 adjusts wave beam for being based on the large-scale fading information and across the area interference information
Forming vector；
Predicting unit 74 does the hot spot base station for predicting to obtain based on the beam forming vector adjusted
Information is disturbed, the interference information to hot spot base station is sent to the hot spot base station side by the connection.
Macro base station described in the present embodiment and hot spot base station are the base station under extensive MIMO heterogeneous network,
In, the macro base station and the hot spot base station are all made of and are communicated frequently together.Work as every time and needs to carry out hot spot to some areas
When reinforcement, directly newly added hot spot base station (access point) can be connected with macro base station by X2 interface, and similar frequency bands are logical
Letter and the interference generated, which can quantify, to be controlled.For example, referring to fig. 2, wherein macro base station covers a biggish range of range, hot spot base
1 is stood i.e. as the hot spot base station being newly added.
Further, the practice processes of the present embodiment also need again to be defined the structure of uplink data frames, can be with
Include: uplink data frames default first position at setting M-bit length carry macro base station user equipment send uplink lead
Frequency signal；In addition, being set in the user that the default second place of uplink data frames setting S bit length is used to carry hot spot base station
The uplink pilot signal that preparation is sent.For example, being divided into uplink frame and downlink frame, uplink pilot signal position in the frame structure referring to Fig. 3
After upstream data signals, wherein M-bit length carries the uplink pilot signal that macro base station user equipment is sent, and S bit is long
Spend the uplink pilot signal that the user equipment of signaling bearer hot spot base station is sent.
Correspondingly, information acquisition unit 72, for detecting self-management from the default first position of uplink data frames
The length sent of user equipment be M uplink pilot signal；From the default second place of uplink data frames, detect described
The length that the user equipment of hot spot BTS management is sent is the uplink pilot signal of S；
Wherein, M and S is the integer more than or equal to 1, and the first position and the second position are not have identical number
According to two positions of position.
According to Fig. 3 as can be seen that first position and the second position can for adjacent two, it is corresponding with more bits
Position.
Further, information acquisition unit 72, the user equipment of the hot spot 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 hot spot base station；
Adjustment unit, the ascending pilot frequency that the length that the user equipment of the self-management for being obtained based on detection is sent is 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, the large-scale fading information for the hot spot base station newly accessed, root can be measured for the macro base station
According to the large-scale fading information of remaining each hot spot base station, the new access hot spot base station by X2 interface transmitting come across cell
Interference informationThe uplink pilot signal that the length sent with the user equipment of the self-management obtained based on detection is M obtains
Channel status indicate (CSI), according to following formula adjust beam forming vector w0,k
SINR=S/ (IThis cell+IAcross cell+N)。
Further, described to predict to obtain the interference to the hot spot base station based on the beam forming vector adjusted
Information can according to formula:It is calculated；
Wherein,And λi, i=1 ..., m is indicatedDescending
The finite eigenvalues of arrangement, d0,kIndicate large-scale fading coefficient of the macrocell base stations for user k, δkIt indicates by Hot Spot
The QoS overflow probability of the user of service, generally settable < 0.05.
Preferably, in scheme provided in this embodiment, the judgment mode ended processing includes:
The predicting unit, for getting the overflow probability of the service quality QoS of user equipment in the Hot Spot；
Judge whether the overflow probability of the QOS of user equipment in the Hot Spot is 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 hot spot base station；If not less than described
Predetermined threshold value is then continued to execute and is predicted to obtain the interference to the hot spot base station based on the beam forming vector adjusted
The operation of information.
In addition, transmitted between macro base station and hot spot base station by X2 interface, can also by macro base station with
The signaling of X2 interface between hot spot base station is reinforced, as shown in Figure 4: the X2 signaling of each hot spot base station transmitting needs to increase ICIS
Information, the ICIS information of each hot spot base station are that m real number (information content that total system is m*S real number) is transferred to macro base respectively
It stands；The X2 signaling of macro base station transmitting needs to increase ICIM information, and the ICIM information of macro base station is s*S real number, passes through X2 interface
It is transferred to each corresponding hot spot base station.
As it can be seen that by using above scheme, it will be able to carry out interference in macro small section and estimate, by X2 interface macro micro-
Cross-layer interference information (ICI) is transmitted in minizone, the beam vector of macro base station and hot spot base station is adjusted based on interference information, in turn
Guarantee the communication quality of user equipment, in this way, avoiding carrying out auxiliary transmission bring frequency spectrum 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, increase X2 interface that will not be more
Load, can effectively lifting system spectrum efficiency.In addition, QoS overflow probability can also be controlled using the above scheme,
Further ensure the processing capacity of system.
Embodiment five,
A kind of hot spot base station, as shown in figure 8, the hot spot base station includes:
Interfacing unit 81, for establishing connection with macro base station；It is got by the connection from the macro base station macro
Interference information of the base station to it；
Adjustment unit 82, for adjusting itself beam forming vector based on interference information of the macro base station to it；
Predicting unit 83 is estimated to obtain across area interference information, and pass through for being based on beam forming vector adjusted
The connection sends across the area interference information to the macro base station.
Macro base station described in the present embodiment and hot spot base station are the base station under extensive MIMO heterogeneous network,
In, the macro base station and the hot spot base station are all made of and are communicated frequently together.It is understood that every time when needs are to part
When area carries out hot spot reinforcement, directly newly added hot spot base station (access point) can be connected with macro base station by X2 interface,
And the interference of similar frequency bands communication and generation can be controlled quantitatively.For example, referring to fig. 2, wherein it is larger to cover a range for macro base station
Range, hot spot base station 1 i.e. as the hot spot base station being newly added.
Further, the practice processes of the present embodiment also need again to be defined the structure of uplink data frames, can be with
Include: uplink data frames default first position at setting M-bit length carry macro base station user equipment send uplink lead
Frequency signal；In addition, being set in the user that the default second place of uplink data frames setting S bit length is used to carry hot spot base station
The uplink pilot signal that preparation is sent.For example, being divided into uplink frame and downlink frame, uplink pilot signal position in the frame structure referring to Fig. 3
After upstream data signals, wherein M-bit length carries the uplink pilot signal that macro base station user equipment is sent, and S bit is long
Spend the uplink pilot signal that the user equipment of signaling bearer hot spot base station is sent.
The hot spot base station further include:
Detection unit 84, for detecting the hot spot BTS management from the default second place of uplink data frames
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；
Correspondingly, the adjustment unit, for being based on the uplink pilot signal, large-scale fading information, concurrent is determined
Send the large-scale fading information to the macro base station.
Wherein, the large-scale fading information can be to pass through the large-scale fading system for measuring whole user equipmenies respectively
Number, makees and obtains large-scale fading information for large-scale fading coefficient.
The beam forming vector that itself is adjusted based on the interference information, comprising: from default the of uplink data frames
At two positions, the uplink pilot signal that the length that the user equipment of the hot spot BTS management is sent is S is detected；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, comprising: each hot spot 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
(amounting to m*S real number), wherein ICIS expression is as follows
As it can be seen that by using above scheme, it will be able to carry out interference in macro small section and estimate, by interface macro small
Cross-layer interference information (ICI) is transmitted in section, and the beam vector of macro base station and hot spot base station, Jin Erbao are adjusted based on interference information
The communication quality of user equipment is demonstrate,proved, in this way, avoiding carrying out auxiliary transmission bring frequency spectrum money using the equipment for increasing different frequency
Source waste only need to increase a signaling or an element using the original interface in base station, increase interface load that will not be more,
Can effectively lifting system spectrum efficiency.In addition, can also control using the above scheme QoS overflow probability, into one
Step ensure that the processing capacity of system.
Embodiment six,
A kind of communication control system is present embodiments provided, as shown in Figure 9, comprising:
Macro base station 91 gets what the hot spot base station was sent by the connection for establishing connection with hot spot base station
Across area interference information；Get the large-scale fading information of the hot spot base station；Based on the large-scale fading information and
Across the area interference information adjusts beam forming vector；It predicts to obtain to institute based on the beam forming vector adjusted
The interference information for stating hot spot base station sends the interference information to hot spot base station to the hot spot base station by the connection
Side；
Hot spot base station 92, the interference information for getting the macro base station to it from the macro base station；Based on described macro
Base station adjusts the beam forming vector of itself to its interference information；Based on beam forming vector adjusted, estimate to obtain across
Area interference information, and across the area interference information is sent to the macro base station by the connection.
The function of above-mentioned macro base station and hot spot base station is same as the previously described embodiments, is not discussed here.
Further, the system also includes at least one user equipmenies；
The user equipment 93, for presetting first in uplink data frames when in macro base station coverage area
Place is set, the uplink pilot signal that length is M is sent；
When in hot spot base station range, in the default second place of uplink data frames, sending length is S's
Uplink pilot signal；
Wherein, M and S is the integer more than or equal to 1, and the first position and the second position are not have identical number
According to two positions of position.
As it can be seen that by using above scheme, it will be able to carry out interference in macro small section and estimate, by X2 interface macro micro-
Cross-layer interference information (ICI) is transmitted in minizone, the beam vector of macro base station and hot spot base station is adjusted based on interference information, in turn
Guarantee the communication quality of user equipment, in this way, avoiding carrying out auxiliary transmission bring frequency spectrum 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 negative
Carry, can effectively lifting system spectrum efficiency.In addition, QoS overflow probability can also be controlled using the above scheme, into
One step ensure that the processing capacity of system.
If the module integrated described in the embodiment of the present invention is realized in the form of software function module and as independent production
Product when selling or using, also can store in a computer readable storage medium.Based on this understanding, the present invention is real
Applying the technical solution of example, substantially the part that contributes to existing technology can embody in the form of software products in other words
Come, which is stored in a storage medium, including some instructions are used so that a computer equipment (can
To be personal computer, the network equipment or network equipment etc.) execute the whole or portion of each embodiment the method for the present invention
Point.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), deposits at random
The various media that can store program code such as access to memory (RAM, Random Access Memory), magnetic or disk.
It is combined in this way, the embodiment of the present invention is not limited to any specific hardware and software.
The foregoing is only a preferred embodiment 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, which is characterized in that the described method includes:
Connection is established with hot spot base station, across the area interference information sent the hot spot base station is got by the connection；
Get the large-scale fading information of the hot spot base station；
Based on the large-scale fading information and across the area interference information, beam forming vector is adjusted；
It predicts to obtain the interference information to the hot spot base station based on the beam forming vector adjusted, passes through the connection
The interference information to hot spot base station is sent to the hot spot base station side.
2. the method according to claim 1, wherein the method is also after the adjustment beam forming vector
Include:
Get the overflow probability of the service quality QoS of user equipment in the Hot Spot；
Judge whether the overflow probability of the QOS of user equipment in the Hot Spot is less than predetermined threshold value；
If being less than the predetermined threshold value, it is determined that completion processing；
If being not less than the predetermined threshold value, continues to execute and predict to obtain to institute based on the beam forming vector adjusted
State the operation of the interference information of hot spot base station.
3. the method according to claim 1, wherein the method also includes:
From the default first position of uplink data frames, the uplink that the length that the user equipment of self-management is sent is M is detected
Pilot signal；
From the default second place of uplink data frames, the length for detecting that the user equipment of the hot spot BTS management is sent is
The uplink pilot signal of S；
Wherein, M and S is the integer more than or equal to 1, and the first position and the second position are not have identical data position
Two positions.
4. according to the method described in claim 3, it is characterized in that, the large-scale fading letter for getting the hot spot base station
Breath, comprising:
The length sent based on the user equipment for detecting the obtained hot spot BTS management is the uplink pilot signal of S, is determined
The corresponding large-scale fading information in the hot spot base station；
Correspondingly, described be based on the large-scale fading information and across the area interference information, adjustment beam forming arrow
Amount, comprising:
It is uplink pilot signal that the length that the user equipment of self-management obtained based on detection is sent is M, described dry across cell
Information and the large-scale fading information are disturbed, signal-to-noise ratio is calculated；
Beam forming vector is adjusted based on the signal-to-noise ratio.
5. method according to claim 1-4, which is characterized in that described to establish connection with hot spot base station, comprising:
Connection is established by X2 interface and hot spot base station.
6. a kind of communication control method is applied to hot spot base station, which is characterized in that the described method includes:
Connection is established with macro base station；
The interference information for getting the macro base station to it from the macro base station is connected by described；
The beam forming vector of itself is adjusted based on interference information of the macro base station to it；
Based on beam forming vector adjusted, estimate to obtain across area interference information, and by the connection send described in across
Area interference information is to the macro base station.
7. according to the method described in claim 6, it is characterized in that, it is described by connect get from the macro base station it is described macro
Base station to before its interference information, the method also includes:
From the default second place of uplink data frames, the length for detecting that the user equipment of the hot spot BTS management is sent is
The uplink pilot signal of S；Wherein, S is the integer more than or equal to 1；
Based on the uplink pilot signal, determines large-scale fading information and send the large-scale fading information to described macro
Base station.
8. the method according to the description of claim 7 is characterized in that described adjusted based on interference information of the macro base station to it
The beam forming vector of itself, comprising:
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 characterized by comprising
Interface unit, for establishing connection with hot spot base station, by the connection get that the hot spot base station sends across small
Area's interference information；
Information acquisition unit, for getting the large-scale fading information of the hot spot base station；
Adjustment unit, for being based on the large-scale fading information and across the area interference information, adjustment beam forming arrow
Amount；
Predicting unit obtains the letter of the interference to the hot spot base station for predicting based on the beam forming vector adjusted
Breath sends the interference information to hot spot base station to the hot spot base station side by the connection.
10. macro base station according to claim 9, which is characterized in that
The predicting unit, for getting the overflow probability of the service quality QoS of user equipment in the Hot Spot；Judgement
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 processing；If being not less than the predetermined threshold value, continue to execute based on the beam forming vector adjusted
Prediction obtains the operation of the interference information to the hot spot base station.
11. macro base station according to claim 9, which is characterized in that
Information acquisition unit, for from the default first position of uplink data frames, detecting that the user equipment of self-management is sent out
The length come is the uplink pilot signal of M；From the default second place of uplink data frames, the hot spot BTS management is detected
The length sent of user equipment be S uplink pilot signal；
Wherein, M and S is the integer more than or equal to 1, and the first position and the second position are not have identical data position
Two positions.
12. macro base station according to claim 11, which is characterized in that information acquisition unit, for what is obtained based on detection
The length that the user equipment of the hot spot BTS management is sent is the uplink pilot signal of S, determines that the hot spot base station is corresponding
Large-scale fading information；
Correspondingly, 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, across the area interference information and the large-scale fading information, are calculated signal-to-noise ratio；Based on described
Signal-to-noise ratio adjusts beam forming vector.
13. according to the described in any item macro base stations of claim 9-12, which is characterized in that
The interface unit establishes connection for leading to X2 interface and hot spot base station.
14. a kind of hot spot base station, which is characterized in that the hot spot base station includes:
Interfacing unit, for establishing connection 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 itself beam forming vector based on interference information of the macro base station to it；
Predicting unit is estimated to obtain across area interference information, and pass through the company for being based on beam forming vector adjusted
Across the area interference information is received and sent to the macro base station.
15. hot spot base station according to claim 14, which is characterized in that the hot spot base station further include:
Detection unit, for detecting that the user of the hot spot BTS management sets from the default second place of uplink data frames
The length that preparation is come is the uplink pilot signal of S；Wherein, S is the integer more than or equal to 1；
Correspondingly, the adjustment unit determines large-scale fading information and sends institute for being based on the uplink pilot signal
Large-scale fading information is stated to the macro base station.
16. hot spot base station according to claim 15, which is characterized in that the adjustment unit, for being based on the uplink
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 system, which is characterized in that the system comprises:
Macro base station, for establishing connection with hot spot base station, by the connection get that the hot spot base station sends across cell
Interference information；Get the large-scale fading information of the hot spot base station；Based on the large-scale fading information and it is described across
Area interference information adjusts beam forming vector；It predicts to obtain to the hot spot based on the beam forming vector adjusted
The interference information of base station sends the interference information to hot spot base station to the hot spot base station side by the connection；
Hot spot base station, the interference information for getting 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 beam forming vector adjusted, estimate to obtain dry across cell
Information is disturbed, and across the area interference information is sent to the macro base station by the connection.
18. system according to claim 17, which is characterized in that the system also includes at least one user equipmenies；
The user equipment, at the default first position of uplink data frames, sending out when in macro base station coverage area
Sending length is the uplink pilot signal of M；When in hot spot base station range, in the default second position of uplink data frames
Place sends the uplink pilot signal that length is S；
Wherein, M and S is the integer more than or equal to 1, and the first position and the second position are not have identical data position
Two positions.
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| EP2988429A1 (en) * | 2014-08-19 | 2016-02-24 | Alcatel Lucent | Coordinated beam forming in a heterogeneous radio communication network |
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| US20140211647A1 (en) * | 2013-01-28 | 2014-07-31 | Innovative Sonic Corporation | Method and apparatus of small cell enhancement in a wireless communication system |
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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 |
| EP2988429A1 (en) * | 2014-08-19 | 2016-02-24 | Alcatel Lucent | Coordinated beam forming in a heterogeneous radio communication network |
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