CN104053163B - A kind of network-building method based on the heterogeneous wireless network for calculating processing - Google Patents
A kind of network-building method based on the heterogeneous wireless network for calculating processing Download PDFInfo
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- CN104053163B CN104053163B CN201410287510.1A CN201410287510A CN104053163B CN 104053163 B CN104053163 B CN 104053163B CN 201410287510 A CN201410287510 A CN 201410287510A CN 104053163 B CN104053163 B CN 104053163B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
A kind of network-building method based on the heterogeneous wireless network for calculating processing, merge heterogeneous network and cloud wireless access network feature, utilize extensive collaborative process and multi-antenna technology, fully to obtain extensive collaborative process and calculate communication gain, operational overhead is reduced, network transmission spectral performance is improved and reduces energy expenditure.In the inventive method, remote radio unit (RRU) is no longer directly connected to fixed baseband processing unit, but the baseband processing unit and radio resource managing unit of remote radio unit (RRU) are moved to and focus on server on a large scale, and passes through high speed fibre realization interconnection.Conventional macro base station upgrades to the super base station of isomery multiple antennas, realizes and focus on a large scale the communication for coordination of server.Network-building method deployment of the present invention based on the heterogeneous wireless network for calculating processing is flexible, upgrading is quick, construction and maintenance cost of the reduction operator to wireless access network, reduces the human intervention in network management.
Description
Technical field
The present invention relates to a kind of network-building method of Radio Network System, exactly, it is related to a kind of based on calculating processing
The network-building method of heterogeneous wireless network, belongs to the technical field of heterogeneous wireless network.
Background technology
In recent years, mobile subscriber for high data rate many applications (such as：Wireless high-definition video, social networks and point
To instant messaging etc.) demand exponentially type increase.Future wireless network will provide a kind of similar asymmetric user data line
The Consumer's Experience of ADSL (Asymmetric Digital Subscriber Line) technology.This means GSM
Average area capacity is up to 25Gbps/km2, even more high；This needs equivalent to the spectrum efficiency of existing GSM
Improve 100 times.At the same time, the power consumption of network then will be reduced further, to the year two thousand twenty, it is contemplated that energy ecology EE
(Energy Efficiency) needs 1000 times of lifting.However, existing cellular radio framework is used for more than 40
Year, its initial purpose of design is intended merely to increase coverage and ensures seamless coverage, rather than for improving system energy efficiency,
So the demand of future mobile communications development can not be adapted well to.This requires the GSM in future to need to carry out
The architecture design of new wireless networks, using advanced signal transacting and networking technology.
Referring to Fig. 1, heterogeneous network HetNets (Heterogeneous Networks) be it is a kind of by from academia and
The network design mode of the extensive attention of industrial circle.Wherein low power nodes LPNs (Low Power Nodes) technology, for example：
Femto base station (Pico Base Station), Home eNodeB (Femto Base Stations) and small-cell base station (Small
Cell Base Stations) etc., all it is the various key technologies of the hoist capacity in high density, high traffic demand network.
The distance between network and user can be shortened using remote radio unit (RRU) in traffic hotspots area, effectively increase macro base station MBS
The coverage of (Macro Base Station), improves data rate, and improve marginal user performance.Meanwhile, using so
Deployment way can with effectively save network overhead, reduce energy expenditure and reduction carrier network lower deployment cost.
Remote radio unit (RRU) using base band and radio frequency isolation technics, can effectively solve the problem that feeder line is various, difficulty of construction big and
Many problems such as site resource acquisition difficulty, are also a kind of common equipment type in network size deployment.But, on the other hand,
A large amount of interference problems for using remote radio unit (RRU) to also result between each remote radio unit (RRU) or each cell are more serious
And complicated also, traditional interference coordination technique is no longer fully effective.For example, under heterogeneous network, multipoint cooperative CoMP
The performance gain of (Coordinated Multi-Point) technology will with the increase of remote radio unit (RRU) deployment density by
It is decrescence few, it is impossible to show its advantage in 4G networks.
Further, since the conventional heterogeneous node such as access point including cellular cell macro base station and broadband access network
Exist while (Heterogeneous Processing Nodes) and remote radio unit (RRU) so that mobile subscriber faces access
The select permeability of network.Although remote radio unit (RRU) can provide higher transmission rate, because its coverage is smaller,
Mobile subscriber may need the frequent switching between low power nodes, cause higher handover failure rate, influence service quality QoS
(Quality of Service).Although macro base station can provide large range of covering, there is also finite capacity and data speed
The relatively low shortcoming of rate.
In summary, a kind of new networking mode how is developed, to overcome the heterogeneous network caused by above mentioned problem
Performance degradations, reduce energy expenditure, realize dynamic optimization and the management of network performance, have given play to heterogeneous network due huge latent
Power, has become scientific research personnel's focus of attention in the industry.
The content of the invention
In view of this, it is an object of the invention to provide a kind of network-building method based on the heterogeneous wireless network for calculating processing.
This method has merged heterogeneous network and cloud wireless access network C-RAN (Cloud Radio Access Network) feature, leads to
Extensive collaborative process and multi-antenna technology, and the extensive ability for concentrating signal processing mode to lift conventional macro base station are crossed,
Again by means of the advantage of extensive centralized calculation technology, extensive collaborative process gain can be fully obtained, operational overhead is realized
Optimization, improves network performance and reduces energy expenditure.
In order to achieve the above object, the invention provides a kind of networking side based on the heterogeneous wireless network for calculating processing
Method, it is characterised in that：Described this method includes following operative step：
Step 1, according to the network planning, first traditional base station, which is upgraded or reset, is equipped with extensive multiple antennas
Enhanced isomery macro base station, the i.e. super base station of isomery multiple antennas, for realizing to the backward compatible of existing system and ensureing network
Seamless coverage；The super base station of isomery multiple antennas has complete physical layer, data link layer and Network layer function, and has
Dynamic realtime interface is provided between the fusion function of heterogeneous radio access networks, with extensive centralized calculation server；The step 1 is wrapped
Include following operation content：
Needing to dispose in the four corner of heterogeneous radio access networks network, according to the network planning and the portfolio in each region
And its coverage, traditional base station is upgraded or enhanced isomery macro base station, the enhanced isomery macro base station is reset
Using the RF transmitter and base band processing device finishing service data and control information processing function of its own configuration, and carry
For business datum and/or control signaling；
For lifting efficiency of transmission, each enhanced isomery macro base station is equipped with extensive antenna, and configures corresponding frequency spectrum
Resource and basic parameter, to provide the basic covering of business for Radio Access Network；The adaptive beam of extensive antenna is assigned
The communication node that shape is then directly accessed by user terminal completes corresponding operating；Enhanced isomery macro base station is connect by dynamic realtime
Mouth and extensive centralized calculation server are connected with each other, and pass through the completion of extensive centralized calculation server and remote radio unit (RRU)
Between live collaboration resource management；
Step 2, in the region that portfolio is big or coverage is big, setting or set up multiple remote radio unit (RRU)s is used to realize
The capacity of hot spot region absorbs；And the remote radio unit (RRU) only retains front end less radio-frequency RF signals and simple Symbol processing work(
Can, the control function of remaining baseband signal physical treatment and RRM all concentrates on extensive centralized calculation server
In baseband processing unit pond in；The step 2 includes following operation content：
In the region that portfolio is big or access is intensive, the distal end preset or set up in multiple remote radio unit (RRU)s, the region
Radio frequency unit is directly accessed extensive centralized calculation server by optical fiber, so that any single baseband processing unit breaks down
Or during mistake, all without influence systemic-function, improve the high reliability of system work；
It is responsible for performing each remote radio unit (RRU) and user in baseband processing unit pond in extensive centralized calculation server
Include the signaling control for all wireless communication resources that synchronous, access, channel are set up, data transfer and channel discharge between terminal
Function, remote radio unit (RRU) only provides the user the transmission channel and forwarding capability of business datum, and business is not performed and control is believed
The processing operation of breath；
Extensive centralized calculation server is also dispatched and power control techniques using the virtual precoding of centralization, user,
So that multiple remote radio unit (RRU)s constitute the node cluster of extensive cooperative multipoint transmission, joint transmission is realized, efficiency of transmission is improved；
Step 3, user terminal access phase：If the translational speed of user is more than predetermined threshold, i.e. in shifting at a high speed
Dynamic state, or when needing support speech business, then access enhanced isomery macro base station；Otherwise, user terminal is examined by assessing
The wireless signal strength measured, and obtain different access nodes transmission power and loading condition and user terminal
Transmission services feature and the limitation of the performance of back haul link, according to the judgement of high energy efficiency access scheme access enhanced isomery macro base station or
Person's remote radio unit (RRU)；
Step 4, after accessing user terminal to network, extensive centralized calculation server is periodically according to remote radio unit (RRU)
Portfolio, and packet loss, handling capacity and three transmission quality performance indications of network transfer delay end to end, adjustment distal end are penetrated
Frequency unit transmission power；Then, extensive centralized calculation server is according to statistical channel status information CSI (Channel State
Information), instantaneous queue state information QSI (Queue State Information) and user mobility are entered to user
Row scheduling；And be user resource allocation according to instantaneous channel state information；
Step 5, user's stage of communication：For the interference of remote radio unit (RRU) in heterogeneous wireless network each other, by
Precoding is performed at extensive centralized calculation server, interference is eliminated in transmitting, while performing serial interference in the stage of reception
Eliminate, so as to realize large-scale interference synergic processing；For the interference between the super base station of isomery multiple antennas, by extensive
MIMO carries out spatial domain interference coordination processing；For the interference between remote radio unit (RRU) and the super base station of isomery multiple antennas, pass through
Resource coordination between extensive centralized calculation server and the super base station of isomery multiple antennas, carries out interference coordination.
Compared with prior art, the innovation key technology and beneficial effect of the inventive method are：In the methods of the invention, far
Baseband processing unit of the radio frequency unit no longer with single fixation is held to be directly connected to, but by the Base-Band Processing list of remote radio unit (RRU)
Member and radio resource managing unit, which are moved to, focuses on server on a large scale, and be connected with each other by high speed fibre.So may be used
To make full use of existing public municipal resource, deployment flexibly, upgrading it is quick, reduction operator to the construction of wireless access network and
Maintenance cost.The virtual antenna array constituted using the remote radio unit (RRU) of common transport carries out extensive multipoint cooperative, can
To be not take up under conditions of extra Radio Resource, it is to avoid produce the interference problem in minizone and cell in network.
Furthermore, (Large- can be handled using extensive multi-antenna cooperative by participating in the enhanced isomery macro base station of cooperation
Scale Cooperative Multiple Antenna Processing) technology, can be not to the grand base of existing traditional structure
Stand under the premise of the big change of progress, improve the complexity of power system capacity, enhancing covering and reduction antenna configuration；Without some
Overlay area configures the remote radio unit (RRU) of enormous amount.Moreover, carrying out extensive multiple antennas using enhanced isomery macro base station
Collaborative process technology, has widened served distance of the macro base station to user, reduces the density of the remote radio unit (RRU) of activity, because
This, the enhanced isomery macro base station with extensive multi-antenna cooperative treatment technology also reduces adjacent distal end radio frequency unit with being somebody's turn to do
Interference between macro base station, while the macro base station carries out the back haul link load of extensive multi-antenna cooperative processing and time delay can
Reduction.
In addition, extensive cooperation RRM (the Large-Scale Cooperative Radio in the present invention
Resource Management) mechanism can perform according to instantaneous channel conditions information and queue state information to Radio Resource
Optimize and revise on a large scale.Heuritic approach is replaced using random Online Learning technology, can estimate in channel condition information, dash forward
When sending service reaches state or other inaccurate key parameters, it is ensured that the robust of extensive cooperation RRM scheduling scheme
Property, on the other hand, after being separated using time scale, the RRM cooperated on a large scale can reduce signaling consumption and calculating
Complexity.
Finally, change of the inventive method to the existing network architecture and network element is seldom, using based on centralized extensive
Extensive MANET (Large-scale Self-Organizing Network) mechanism of centralized calculation technology, can enter one
Step simplifies the operation of network operation maintenance, reaches the human intervention reduced in network management, the mesh of reduction operator maintenance costs
's.By extensive MANET, the complexity of management co-channel interference can be not only reduced, all remote radio unit (RRU)s are saved and grand
The maintenance costs of base station, can also provide powerful optimisation strategy, to improve system by way of coordinating whole network management
Energy ecology performance.
Brief description of the drawings
Fig. 1 is the structure composition schematic diagram of existing heterogeneous wireless network.
Fig. 2 is the present invention based on the isomery wireless networking method operating procedure flow chart for calculating processing.
Fig. 3 is schematic diagram of the present invention based on the isomery wireless networking method embodiment for calculating processing.
Fig. 4 is the efficiency of power dissipation contrast schematic diagram of the inventive method embodiment and traditional IT.
Fig. 5 is the power system capacity contrast schematic diagram of the inventive method embodiment and traditional IT.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, further is made to the present invention below in conjunction with the accompanying drawings
Detailed description.
Before the inventive method is introduced, the following four kinds of network nodes being first related to this method are briefly described：
The enhanced isomery macro base station of extensive multiple antennas (Massive MIMO) is equipped with, for ensureing the seamless of network
Covering, and extensive centralized calculation server is connected by light back haul link, transmit for cooperation transmission base band signal process
The spectrum efficiency of data message, the total spectrum efficiency of lifting cell and edge customer.
Multiple remote radio unit (RRU)s of distributed multi-antenna (Distributed MIMO) are constituted, for realizing wireless access
The wireless signal transmitting-receiving at end, strengthens the covering of data hot zones, reduces the switching times of user, lifting Cell Edge User
Service quality；Each remote radio unit (RRU) directly connects extensive centralized calculation server using light back haul link.
The baseband processing unit pond being made up of the baseband processing unit of multiple virtualization architectures, each Base-Band Processing therein
Unit is provided with the following four kinds of modules set according to process resource attribute：Physical channel processing module, media access control MAC
(Media Access Control) layer processing module, control and management module and accelerator module；The baseband processing unit pond
The resource requirement handled according to above-mentioned four classes resource, is scheduled to resource and constitutes a virtual base station；Distributed distal end is penetrated
Frequency unit collects up, descending channel information and user data, and is interacted with the virtual base station interface for carrying these information
Various functions, all realized using downloading and update correlation module, it is not necessary to HardwareUpgring；And when the virtual base station is born
When load changes, system can be distributed independently adjustresources, and dynamic obtains required respective wireless resource.
The multi-zone supervision server in the baseband processing unit pond of virtualization architecture is configured, is wirelessly connect for focusing on isomery
Enter the data message at wireless access end in networking, centralized management carried out to resource allocation, Internet resources are distributed in global scope,
Significantly improve the utilization rate of resource.
Referring to Fig. 2, the concrete operation step of the network-building method of heterogeneous wireless network of the present invention is introduced：
Step 1, according to the network planning, first traditional base station, which is upgraded or reset, is equipped with extensive multiple antennas
Enhanced isomery macro base station, the i.e. super base station of isomery multiple antennas, for realizing to the backward compatible of existing system and ensureing network
Seamless coverage；The super base station of isomery multiple antennas has complete physical layer, data link layer and Network layer function, and has
Dynamic realtime interface is provided between the fusion function of heterogeneous radio access networks, with extensive centralized calculation server.The step bag
Include following operation content：
Needing to dispose in the four corner of heterogeneous radio access networks network, according to the network planning and the portfolio in each region
And its coverage, traditional base station is upgraded or enhanced isomery macro base station, the enhanced isomery macro base station is reset
Using the RF transmitter and base band processing device finishing service data and control information processing function of its own configuration, and carry
For business datum and/or control signaling；
For lifting efficiency of transmission, each enhanced isomery macro base station is equipped with extensive antenna, and configures corresponding frequency spectrum
Resource and basic parameter, to provide the basic covering of business for Radio Access Network；The adaptive beam of extensive antenna is assigned
The communication node that shape is then directly accessed by user terminal completes corresponding operating；Enhanced isomery macro base station is connect by dynamic realtime
Mouth and extensive centralized calculation server are connected with each other, and pass through the completion of extensive centralized calculation server and remote radio unit (RRU)
Between live collaboration resource management.
Step 2, in the region that portfolio is big or coverage is big, setting or set up multiple remote radio unit (RRU)s is used to realize
The capacity of hot spot region absorbs；And the remote radio unit (RRU) only retains front end less radio-frequency RF signals and simple Symbol processing work(
Can, the control function of remaining baseband signal physical treatment and RRM all concentrates on extensive centralized calculation server
In baseband processing unit pond in.The step includes following operation content：
In the region that portfolio is big or access is intensive, the distal end preset or set up in multiple remote radio unit (RRU)s, the region
Radio frequency unit is directly accessed extensive centralized calculation server by optical fiber, so that any single baseband processing unit breaks down
Or during mistake, all without influence systemic-function, improve the high reliability of system work.
It is responsible for performing each remote radio unit (RRU) and user in baseband processing unit pond in extensive centralized calculation server
Include the signaling control for all wireless communication resources that synchronous, access, channel are set up, data transfer and channel discharge between terminal
Function, remote radio unit (RRU) only provides the user the transmission channel and forwarding capability of business datum, and business is not performed and control is believed
The processing operation of breath.
Extensive centralized calculation server is also dispatched and power control techniques using the virtual precoding of centralization, user,
So that multiple remote radio unit (RRU)s constitute the node cluster of extensive cooperative multipoint transmission, joint transmission is realized, efficiency of transmission is improved.
Step 3, user terminal access phase：If the translational speed of user is more than predetermined threshold, i.e. in shifting at a high speed
Dynamic state, or when needing support speech business, then access enhanced isomery macro base station；Otherwise, user terminal is examined by assessing
The wireless signal strength measured, and obtain different access nodes transmission power and loading condition and user terminal
Transmission services feature and the limitation of the performance of back haul link, according to the judgement of high energy efficiency access scheme access enhanced isomery macro base station or
Person's remote radio unit (RRU).
Step 4, after accessing user terminal to network, extensive centralized calculation server is periodically according to remote radio unit (RRU)
Portfolio, and packet loss, handling capacity and three transmission quality performance indications of network transfer delay end to end, adjustment distal end are penetrated
Frequency unit transmission power；Then, extensive centralized calculation server is according to statistical channel status information CSI (Channel State
Information), instantaneous queue state information QSI (Queue State Information) and user mobility are entered to user
Row scheduling；And be user resource allocation according to instantaneous channel state information.The step includes following concrete operations content：
Periodically the portfolio and isomery of remote radio unit (RRU) are wireless in monitoring network for extensive centralized calculation server
The performance of access network：
If the total traffic of the remote radio unit (RRU) is located in predetermined threshold range；And including packet loss, handling capacity and end
When to the network transfer delay at end, totally three transmission quality performance indications parameters are in the range of its predetermined threshold, then remain stationary
It is constant；Or
The total traffic of the remote radio unit (RRU) continues to exceed predetermined threshold value, or real-time because of heterogeneous radio access networks network
Processing function is limited, and any one performance parameter in its three transmission quality performance indications parameters decreases below its predetermined door
During limit value, then decision-making system is in heavy traffic state, and the remote radio unit (RRU) improves transmission power, and startup is not opened nearby
Remote radio unit (RRU)；User terminal accesses optimal enhanced isomery macro base station or far end radio frequency list according to energy efficiency indexes
Member, while carrying out the scheduling of large-scale wireless resource：By from heavy traffic remote radio unit (RRU) or baseband signal through route
The baseband processing unit specified into resource pool is distributed to be handled；Under extreme case, i.e., system crosses high state in portfolio,
When causing remote radio unit (RRU) Radio Resource shortage, heavy traffic remote radio unit (RRU) even borrows adjacent distal end radio frequency unit
Radio Resource.Or
The total traffic of the remote radio unit (RRU) is continuously less than predetermined threshold value, and three biographies of heterogeneous radio access networks network
When transmission quality performance indications are above its predetermined threshold, then decision-making system is in low traffic state, the remote radio unit (RRU)
Just reduction transmission power, or user is switched to after node nearby according to energy efficiency indexes, closes the remote radio unit (RRU).
Step 5, user's stage of communication：For the interference of remote radio unit (RRU) in heterogeneous wireless network each other, by
Precoding is performed at extensive centralized calculation server, interference is eliminated in transmitting, while performing serial interference in the stage of reception
Eliminate, so as to realize large-scale interference synergic processing；For the interference between the super base station of isomery multiple antennas, by extensive
MIMO carries out spatial domain interference coordination processing；For the interference between remote radio unit (RRU) and the super base station of isomery multiple antennas, pass through
Resource coordination between extensive centralized calculation server and the super base station of isomery multiple antennas, carries out interference coordination.The step bag
Include following concrete operations content：
(51) when remote radio unit (RRU) carries out downlink communication with user terminal, carried out by extensive centralized calculation server
Virtual precoding computing, builds interference channel kernel, and remote radio unit (RRU) carries out signal transmitting according to virtual precoding vectors,
To eliminate descending interference；When remote radio unit (RRU) carries out uplink communication with user terminal, extensive centralized calculation server is performed
Serial interference elimination, to recover the upward signal of each user；So as to realize large-scale interference synergic processing.
(52) for the interference between enhanced isomery macro base station, the i.e. super base station of isomery multiple antennas, the enhanced grand base of isomery
Stand the spatial feature information generation interference coordination instruction of the interference of acquisition；Then, by with other enhanced isomery macro base stations
Interface indicate that itself and adjacent enhanced isomery macro base station carry out scheduling of resource；After the serving BS of user terminal is according to coordination
Resource carry out joint transmission with the enhanced isomery macro base station with interference, interference signal is converted into useful signal, so that real
Now extensive MIMO spatial domains interference coordination is handled.
(53) for the interference of remote radio unit (RRU) and enhanced isomery macro base station, enhanced isomery macro base station with it is extensive
Centralized calculation server is entered by interface each other to the interference information in same asset and the performance indications counted
The real-time dynamic interaction of row, and running time-frequency resource is coordinated, so as to realize above and below between super base station and remote radio unit (RRU)
Row interference coordination.
Inventions have been the experiment of substantial amounts of simulation implementation, (it is real that Fig. 3 show isomery wireless networking method of the present invention
Apply the schematic diagram of example), the result of simulation implementation experiment is successful, realizes goal of the invention.
In order to intuitively embody the superiority of the inventive method, by the result of the test of the emulation embodiment of the present invention and tradition
Network-building method performance is contrasted.It is briefly explained with reference to Fig. 4 and Fig. 5：
Referring to Fig. 4, contrast of the inventive method from traditional IT in energy efficiency performance is introduced different.
Fig. 4 shows that the present invention is better than traditional IT in energy efficiency performance.4 curves difference from bottom to top
It is represented with curve 1~4, wherein, curve 1 represents the energy consumption for only having macro base station scene, and all resources are all distributed by macro base station, its
3 curves of remaininging represent energy consumption of the inventive method in different situations.Wherein, curve 2 represents remote radio unit (RRU) and macro base station
Frequency resource is orthogonal, and curve 3 represents remote radio unit (RRU) and macro base station channeling, and curve 4 represents remote radio unit (RRU) and grand
The part resource of base station is orthogonal, part resource multiplexing.From figure 3, it can be seen that the performance efficiency of three kinds of different situations of the invention
All the time it is better than conventional method.And with the increase of maximum transmission power, the performance advantage of the inventive method is more obvious.
Referring to Fig. 5, the contrast situation of the inventive method and traditional IT in power system capacity is introduced.
Fig. 4 shows that the system capacity performance of the inventive method is also superior to traditional network-building method.Moreover, power system capacity
It can increase with the remote radio unit (RRU) node for participating in cooperation and increase, and be better than conventional method all the time.Furthermore, with transmitting
The increase of power, the performance advantage of the inventive method is more obvious.
Claims (4)
1. a kind of network-building method based on the heterogeneous wireless network for calculating processing, it is characterised in that：Described this method includes following
Operating procedure：
Step 1, according to the network planning, the enhancing for being equipped with extensive multiple antennas of first upgrading to traditional base station or reset
Type isomery macro base station, the i.e. super base station of isomery multiple antennas, the nothing for realizing to the backward compatible of existing system and ensureing network
Seam covering；The super base station of isomery multiple antennas has complete physical layer, data link layer and Network layer function, and with isomery
Dynamic realtime interface is provided between the fusion function of wireless access network, with extensive centralized calculation server；Under the step 1 includes
Row operation content：
Needing to dispose in the four corner of heterogeneous radio access networks network, according to the portfolio in the network planning and each region and its
Coverage, is upgraded to traditional base station or resets enhanced isomery macro base station, the enhanced isomery macro base station is utilized
The RF transmitter and base band processing device finishing service data and control information processing function of its own configuration, and industry is provided
Data of being engaged in and/or control signaling；
For lifting efficiency of transmission, each enhanced isomery macro base station is equipped with extensive antenna, and configures corresponding frequency spectrum resource
With basic parameter, to provide the basic covering of business for Radio Access Network；The adaptive wave beam shaping of extensive antenna is then
The communication node directly accessed by user terminal completes corresponding operating；Enhanced isomery macro base station by dynamic realtime interface and
Extensive centralized calculation server is connected with each other, and is completed by extensive centralized calculation server between remote radio unit (RRU)
Live collaboration resource management；
Step 2, in the region that portfolio is big or coverage is big, setting or set up multiple remote radio unit (RRU)s is used to realize focus
The capacity in region absorbs；And the remote radio unit (RRU) only retains front end less radio-frequency RF signals and simple Symbol processing function,
The control function of remaining baseband signal physical treatment and RRM is all concentrated in extensive centralized calculation server
Baseband processing unit pond in；The step 2 includes following operation content：
In the region that portfolio is big or access is intensive, the far end radio frequency preset or set up in multiple remote radio unit (RRU)s, the region
Unit is directly accessed extensive centralized calculation server by optical fiber, so that any single baseband processing unit breaks down or wrong
Mistake, all without influence systemic-function, improve the high reliability of system work；
It is responsible for performing each remote radio unit (RRU) and user terminal in baseband processing unit pond in extensive centralized calculation server
Between include synchronous, access, channel set up, the signaling control work(of all wireless communication resources of data transfer and channel release
Can, remote radio unit (RRU) only provides the user the transmission channel and forwarding capability of business datum, does not perform business and control information
Processing operation；
Extensive centralized calculation server is also using the virtual precoding of centralization, user's scheduling and power control techniques so that
Multiple remote radio unit (RRU)s constitute the node cluster of extensive cooperative multipoint transmission, realize joint transmission, improve efficiency of transmission；
Step 3, user terminal access phase：If the translational speed of user is more than predetermined threshold, is in high-speed mobile shape
State, or when needing support speech business, then access enhanced isomery macro base station；Otherwise, user terminal is detected by assessing
Wireless signal strength, and obtain different access nodes transmission power and loading condition and user terminal transmission
The performance limitation of service feature and back haul link, enhanced isomery macro base station is accessed or remote according to the judgement of high energy efficiency access scheme
Hold radio frequency unit；
Step 4, after accessing user terminal to network, extensive centralized calculation server is periodically according to far-end radio frequency unit business
Amount, and packet loss, handling capacity and three transmission quality performance indications of network transfer delay end to end, adjust far end radio frequency list
First transmission power；Then, extensive centralized calculation server is according to statistical channel status information CSI (Channel State
Information), instantaneous queue state information QSI (Queue State Information) and user mobility are entered to user
Row scheduling；And be user resource allocation according to instantaneous channel state information；
Step 5, user's stage of communication：For the interference of remote radio unit (RRU) in heterogeneous wireless network each other, by advising greatly
Precoding is performed at mould centralized calculation server, interference is eliminated in transmitting, while serial interference elimination is performed in the stage of reception,
So as to realize large-scale interference synergic processing；For the interference between the super base station of isomery multiple antennas, pass through extensive MIMO
Carry out spatial domain interference coordination processing；For the interference between remote radio unit (RRU) and the super base station of isomery multiple antennas, by big
Resource coordination between scale land management calculation server and the super base station of isomery multiple antennas, carries out interference coordination.
2. according to the method described in claim 1, it is characterised in that：Methods described is related to following network node：
The enhanced isomery macro base station of extensive multiple antennas (Massive MIMO) is equipped with, for ensureing that the seamless of network covers
Lid, and extensive centralized calculation server is connected by light back haul link, transmit the number for cooperation transmission base band signal process
It is believed that the spectrum efficiency of breath, the total spectrum efficiency of lifting cell and edge customer；
Multiple remote radio unit (RRU)s of distributed multi-antenna (Distributed MIMO) are constituted, for realizing wireless access end
Wireless signal is received and dispatched, and strengthens the covering of data hot zones, reduces the switching times of user, lifts the service of Cell Edge User
Quality；Each remote radio unit (RRU) directly connects extensive centralized calculation server using light back haul link；
The baseband processing unit pond being made up of the baseband processing unit of multiple virtualization architectures, each baseband processing unit therein
Provided with the following four kinds of modules set according to process resource attribute：Physical channel processing module, media access control MAC (Media
Access Control) layer processing module, control and management module and accelerator module；The baseband processing unit pond is according to above-mentioned
The resource requirement of four class resources processing, is scheduled to resource and constitutes a virtual base station；Distributed remote radio unit (RRU) is received
Collect up, descending channel information and user data, and with carrying the various work(that the virtual base station interface of these information is interacted
Can, all realized using downloading and updating correlation module, it is not necessary to HardwareUpgring；And when virtual base station load becomes
During change, system can be distributed independently adjustresources, and dynamic obtains required respective wireless resource；
The multi-zone supervision server in the baseband processing unit pond of virtualization architecture is configured, for focusing on heterogeneous radio access networks
The data message at wireless access end in road, carries out centralized management to resource allocation, Internet resources is distributed in global scope, significantly
Improve the utilization rate of resource.
3. according to the method described in claim 1, it is characterised in that：The step 4 includes following operation content：
Extensive centralized calculation server periodically in monitoring network remote radio unit (RRU) portfolio and isomery wireless access
The performance of network：
If the total traffic of the remote radio unit (RRU) is located in predetermined threshold range；And including packet loss, handling capacity and end-to-end
Network transfer delay when totally three transmission quality performance indications parameters are in the range of its predetermined threshold, then remain stationary not
Become；Or
The total traffic of the remote radio unit (RRU) continues to exceed predetermined threshold value, or because of the real-time processing of heterogeneous radio access networks network
Any one performance parameter in function limitation, its three transmission quality performance indications parameters decreases below its predetermined threshold
When, then decision-making system be in heavy traffic state, the remote radio unit (RRU) improve transmission power, and start nearby do not open it is remote
Hold radio frequency unit；User terminal accesses optimal enhanced isomery macro base station or remote radio unit (RRU) according to energy efficiency indexes, together
The scheduling of Shi Jinhang large-scale wireless resources：By the baseband signal from heavy traffic remote radio unit (RRU) through route assignment to money
The baseband processing unit specified in the pond of source is handled；Under extreme case, i.e., system crosses high state in portfolio, causes distal end
When radio frequency unit Radio Resource lacks, heavy traffic remote radio unit (RRU) even borrows the wireless money of adjacent distal end radio frequency unit
Source；Or
The total traffic of the remote radio unit (RRU) is continuously less than predetermined threshold value, and three transmission matter of heterogeneous radio access networks network
When amount performance indications are above its predetermined threshold, then decision-making system is in low traffic state, and the remote radio unit (RRU) just drops
Low transmitting power, or user is switched to after node nearby according to energy efficiency indexes, close the remote radio unit (RRU).
4. according to the method described in claim 1, it is characterised in that：The step 5 includes following operation content：
(51) when remote radio unit (RRU) carries out downlink communication with user terminal, carried out by extensive centralized calculation server virtual
Precoding computing, builds interference channel kernel, remote radio unit (RRU) carries out signal transmitting according to virtual precoding vectors, to disappear
Except descending interference；When remote radio unit (RRU) carries out uplink communication with user terminal, extensive centralized calculation server performs serial
Interference is eliminated, to recover the upward signal of each user；So as to realize large-scale interference synergic processing；
(52) for the interference between enhanced isomery macro base station, the i.e. super base station of isomery multiple antennas, enhanced isomery macro base station will
The spatial feature information generation interference coordination instruction of the interference of acquisition；Then, by being connect with other enhanced isomery macro base stations
Mouth indicates that itself and adjacent enhanced isomery macro base station carry out scheduling of resource；The serving BS of user terminal is according to the money after coordination
Source carries out joint transmission with interference with the enhanced isomery macro base station, and interference signal is converted into useful signal, so as to realize big
The interference coordination processing of scale MIMO spatial domains；
(53) for the interference of remote radio unit (RRU) and enhanced isomery macro base station, enhanced isomery macro base station and extensive concentration
Calculation server is carried out real by interface each other to the interference information in same asset and the performance indications counted
When dynamic interaction, and running time-frequency resource is coordinated, so as to realize that the up-downgoing between super base station and remote radio unit (RRU) is done
Disturb coordination.
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| WO2016113469A1 (en) * | 2015-01-13 | 2016-07-21 | Aalto-Korkeakoulusäätiö | A base station and a method thereto |
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| US10278171B2 (en) * | 2015-03-30 | 2019-04-30 | John Mezzalingua Associates, LLC | Systems, methods, and manufactures for providing network services including mobile services to a location |
| CN105120467B (en) * | 2015-09-07 | 2018-08-14 | 重庆邮电大学 | A kind of dynamic distributed allocating antenna method of enhancing network capacity and covering |
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| CN109819451B (en) * | 2017-11-21 | 2022-03-29 | 中国移动通信集团浙江有限公司 | Macro-micro base station fusion networking planning method and device and electronic equipment |
| CN110213716B (en) * | 2019-05-20 | 2020-05-12 | 北京邮电大学 | Vehicle-connected networking method based on fog wireless access network |
| CN111181611A (en) * | 2019-12-25 | 2020-05-19 | 深圳大学 | Data transmission processing method and system |
| CN111182499A (en) * | 2019-12-31 | 2020-05-19 | 南京泰通科技股份有限公司 | High-speed railway train comprehensive control networking and working method thereof |
| CN111328144B (en) * | 2020-01-20 | 2023-04-18 | 赣江新区智慧物联研究院有限公司 | Wireless resource allocation method, device, readable storage medium and computer equipment |
| CN112738827B (en) * | 2020-12-29 | 2022-06-21 | 杭州电子科技大学 | Subcarrier and power joint optimization method based on spectral efficiency maximization in H-CRAN |
| CN113727414B (en) * | 2021-08-17 | 2023-11-14 | 吉林大学 | Dynamic base station deployment and backhaul method in ultra-dense network based on virtual base station |
| CN114520993B (en) * | 2022-03-08 | 2024-01-05 | 沈阳中科奥维科技股份有限公司 | Wireless transmission system network self-optimizing method based on channel quality monitoring |
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