CN106714184A - Method for dynamically configuring computing resource and data link in C-RAN network based on SDN - Google Patents

Method for dynamically configuring computing resource and data link in C-RAN network based on SDN Download PDF

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Publication number
CN106714184A
CN106714184A CN201710065029.1A CN201710065029A CN106714184A CN 106714184 A CN106714184 A CN 106714184A CN 201710065029 A CN201710065029 A CN 201710065029A CN 106714184 A CN106714184 A CN 106714184A
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vbs
cluster
mac
virtual
computing resource
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马争鸣
刘亚南
杨广铭
尹远阳
孙嘉琪
黄卓君
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National Sun Yat Sen University
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National Sun Yat Sen University
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10Dynamic resource partitioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18Network planning tools
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support devices; Network management devices

Abstract

The invention discloses a method for dynamically configuring a computing resource and a data link in a C-RAN network based on an SDN, and relates to the technical field of wireless access networks. The method comprises the following steps: splitting a physical layer and a media access control sub-layer of a virtual base station communication function in a BBU resource pool, respectively realizing on a virtual machine, managing virtual base stations of all data centers by use of a SDN controller, thereby building a virtual cluster between the virtual base stations, and performing data link allocation for the virtual cluster to provide cooperation and communication with higher degree between the base stations, thereby dynamically configuring the computing resource and dynamically adjusting the data link of the virtual cluster. By sufficient use of the virtualization of the computing resource in the C-RAN network based on the SDN, the computing resource is dynamically allocated and the data link is dynamically adjusted, the BBU resource pool utilization rate is improved, the user handover delay is reduced, and better user experience effect is realized.

Description

Computing resource and data link dynamic configuration in a kind of C-RAN networks based on SDN Method
Technical field
It is especially a kind of to be based on SDN (Software Defined the present invention relates to the Technology of Wireless Access Networks field Network computing resource and data link dynamic configuration in C-RAN (Clould Radio Access Network) network) Method, carry out virtual cluster to virtual computing resource in C-RAN networks, and using SDN controllers to the number of Virtual Cluster It is managed according to link, realizes the dynamic configuration to Virtual Cluster computing resource, and the dynamic of data link is adjusted.
Background technology
Wireless access network (RAN) is a most important part in cellular radio.However, traditional cellular architecture is present It is many not enough, do not meet current user's request and show a series of shortcoming, be mainly manifested in current cellular networks with it is current User rate demand is mismatched, it is impossible to meet the capacity requirement of user's explosion type;Each base station (BS) is only connected number Sector, and it is only the service that the user in coverage provides receiving and transmitting signal;A large amount of distributed computer rooms and air-conditioning equipment, make Mobile operator endures huge operation Capital expenditure (CAPEX) and operation expenditure (OPEX) to the fullest extent;Cooperate with to be limited between base station and make user Equipment there is substantial amounts of time delay when switching between base station and base station utilization rate is low.
C-RAN is a kind of new normal form in broadband radio access network, indoor baseband processing unit BBU and Remote Radio Unit RRU is zoomed out, and traditional BBU units are put together at Public Computer Room nearby, such as in one group of physical server of data center;One All of virtual base station (VBS) shares a base band resource pool in data center, is offer higher degree between base station (BSs) Cooperate and communicate;Centralization mode can greatly reduce the quantity and auxiliary facility of computer room, the particularly cooling system such as air-conditioning Reduction, network can be made to reach energy conservation and consumption reduction effects.Although there is currently many utilization cooperates with multicast communication technology to virtual money The research of source scheduling, but the research to the dynamic syndicated treatment of multiple resource pools is little.
SDN is software defined network, is a kind of brand-new network design theory and design philosophy.SDN is to meet following four A kind of network architecture of principle:Control and forwarding separation principle, centralization Controlling principle, Network may be programmed, and open connects Mouthful, the decoupling for realizing control plane and data plane is separated, and makes network more open, allows network to become quicker and flexible, from And preferably support the virtual server and virtual memory framework in data center.
In RAN fields, the investment to SDN is concentrated mainly on C-RAN networks, is used to dispose distributed wireless access point and collection Chinese style base band resource pool.A kind of brand-new conceptual design of C-RAN network on behalf based on SDN, and allow the meter across data center Calculate the dynamic adjustment of resource (CPU, internal memory, storage and network interface) dynamic configuration and data link.
The content of the invention
To overcome the limitation of current cellular networks, provided the invention provides being calculated in a kind of C-RAN networks based on SDN Source and the method for data link dynamic configuration, the method is by the physical layer (PHY layer) of virtual base station communication function in BBU resource pools Split with medium access control sublayer (MAC layer), realized on virtual machine (VM) respectively, using SDN controller managements institute There is the virtual base station of data center, make to set up Virtual Cluster (V-Cluster) between virtual base station, and enter line number to Virtual Cluster Distributed according to link, be the cooperation of higher degree to be provided between base station and is communicated, make the computing resource dynamic configuration of Virtual Cluster with And the dynamic adjustment of data link.The specific content of the invention is as follows:
To achieve the object of the present invention, the invention provides computing resource and data in a kind of C-RAN networks based on SDN The method of link dynamic configuration, the network architecture of the method specifically includes as follows:
Radio frequency remote unit RRU (Radio Remote Unit), only retains wireless frequency spectrum RF (Radio Frequency) Layer, is responsible for the radio-frequency receiving-transmitting function after digital-to-analog conversion.Each remote radio head RRH (Remote Radio Head) is covered Region be referred to as a cell (cell).
Indoor baseband processing unit BBU (Base band Unite) resource pool, comprising PHY layer, MAC layer and higher, institute There is digital base band processor function to be all concentrated in BBU ponds;And existing Intel Virtualization Technology is utilized, BBU ponds are virtualized into one Group virtual base station (VBSs), respectively including VBS-MACs and VBS-PHYs, it is possible to achieve multiple VBS-PHYs connect single VBS- MAC, wherein VBS-PHYs and VBS-MAC can share a physical server and can also be separately mounted to different physical services On device, user QoS and resource utilization in C-RAN networks can be improved.
SDN controllers, are responsible for the VBSs in global angle is controlled and manages all of BBU resource pools;Controller is by BBU VBSs in resource pool carries out Virtual Cluster, and for Virtual Cluster issues data link flow table.
A kind of method of computing resource and data link dynamic configuration in C-RAN networks based on SDN, the method includes:
Situation one, when a large number of users MSs moves to another cell#2 in Cluster from current cell#1, MSs hairs Raw intra-Cluster handover between cells, step is as follows:
Step 1:Environmental monitoring system module in VBS-MAC virtual machines detects cell#1 and cell#2 in Virtual Cluster Between there is a large number of users MSs switching, the information that migrated userses occur is sent to environmental monitoring system the control system of VBS-MAC Module;
Need to further illustrate, the data type of user of the present invention refers mainly to the stream that each user accesses internet Amount mode, substantially there is three kinds of different choices:(1) IP phone (constant bit rate), (2) light browses (sudden, relatively low data Rate), (3) Media Stream or download (high data rate).
Step 2:The control system module of VBS-MAC calculates the VBS-PHY#2 of cell#2 according to the user profile for receiving Whether middle idle computing resources meet the demand of migrated userses computing resource.
Step 3:If idle computing resources meet the demand of migrated userses computing resource in the VBS-PHY#2 of cell#2, The configuration information of VBS-PHY#2 computing resources does not change;VBS-MAC control systems are big to VBS-PHY#1 computing resources It is small to be reconfigured.
Step 4:If idle computing resources are unsatisfactory for the demand of migrated userses computing resource in the VBS-PHY#2 of cell#2, Then VBS-MAC control systems are reconfigured to VBS-PHY#2 computing resources, are allowed to meet migration MSs demands enough;VBS-MAC Control system is reconfigured to the size of VBS-PHY#1 computing resources.
Step 5:The configuration of VBS-MAC computing resources does not change in virtual Cluster, between Virtual Cluster internal zone Using multicast communication (CoMP) technology is cooperateed with, the information of user in VBS-MAC computing resources is shared, by base band system in VBS-MAC System module is processed user profile, reduces the time delay that MSs brings by handover between cells.
Situation two, when a large number of users moves to Cluster edges because of tidal effect, user MSs can be subject to neighbouring cluster The interference of signal, the control system of current virtual cluster VBS-MAC utilizes dynamic syndicated treatment (DJP) method, calculates and judges Whether the adjustment of Virtual Cluster size there is.
Need to be further explanation, the number of RRH in the above-mentioned big little finger of toe Virtual Cluster of Virtual Cluster.
Dynamic syndicated processing method (DJP) described in the invention is specific as follows:
If spectral bandwidth has one group of t easet ofasubcarriers:Wherein K represents the quantity of all subcarriers;
For each subcarrier fk, there is a set for virtual single carrier cluster in network: Each Virtual Cluster includes one group of RRHs:And each is empty Intend cluster and include one group of MSs:Certain is received from certain RRH The interference signal of MS is
WhereinIt is in moment t signal from mobile stationSendThe greatest path loss for receiving,Refer toThe transimission power for sending,Refer to The shadow fading loss of time change.Mobile station MS be subject to current virtual cluster interference signal be:
Mobile station MS is closed on virtual single carrier for JkThe interference signal of cluster is:
The control system of current VBS-MAC calculates the interference signal of all neighbouring Virtual Cluster that MS is received, and calculates Go out mobile station MS receive maximum neighbouring virtual single carrier cluster interference signal be:
Now, the neighbouring Virtual Cluster of maximum interference signal is cluster j=jmax, interference signal size is
If the maximum interference signal that MS is received from neighbouring virtual Cluster#jLess than or equal to MS from work as The interference signal that preceding Cluster is receivedWhen, MS switches between there is no cluster, and Virtual Cluster size is constant;Currently Cluster VBS-MAC control systems are reconfigured to the VBS-PHY computing resources of relevant edge RRH in cluster, are allowed to meet enough Migration MSs demands;
If MS receives the maximum interference signal of neighbouring virtual Cluster#jMore than from current Cluster The interference signal for receivingWhen, current Cluster and neighbouring virtual Cluster#j will occur Virtual Cluster calculating Switch between the dynamic configuration of resource size, MS Cluster, and SDN controllers are to the dynamic of Virtual Cluster data link flow table Adjustment, and Clusters size also synchronous adjustment, comprise the following steps that:
Step 1:The edge customer information that current virtual cluster VBS-MAC environmental monitoring systems will be migrated is by virtual The X2 interface of resource pool sends the control system of the VBS-MAC of neighbouring Virtual Cluster to;
Step 2:The control system module of neighbouring VBS-MAC increased VBS- according to needed for the user profile for receiving is calculated The size of MAC computing resources, if idle computing resources meet the demand of migrated userses computing resource in neighbouring VBS-MAC, VBS-MAC configurations are constant.Otherwise, VBS-MAC controllers send solicited message to controller, and request increases VBS-MAC and calculates money Source;After controller receives request, neighbouring VBS-MAC computing resources are reconfigured.
Step 3:The impacted edge RRH of current cluster is removed and is added to neighbouring virtual collection by controller from current cluster Group.
Step 4:The control system module of neighbouring VBS-MAC is according in all any active ues information computing clusters in the cluster All of VBS-PHYs computing resources size, to the newly-increased VBS-PHY virtual machines of neighbouring Virtual Cluster, and to all VBS- in cluster PHYs computing resources are reconfigured.
Step 5:Current VBS-MAC control systems are reconfigured to VBS-PHYs computing resources impacted in the cluster.
Step 6:SDN controllers issue the data of renewal to current cluster and neighbouring Virtual Cluster VBS-MACs control systems Link flow table, comprises the following steps that:
Step 6.1:Current cluster and neighbouring Virtual Cluster VBS-MACs control systems are by the specific network topology of this cluster It is sent to SDN controllers.
Wherein, IP and physics MAC ground of the specific cluster network topology including BBU mediocre person's reason server where this cluster Map information of virtual machine and physical server etc. in location, cluster.
Step 6.2:SDN controllers calculate forward-path, configuration management business according to topology, generate the list item of forward-path It is issued in the Transmission system module of current and neighbouring Virtual Cluster VBS-MACs.
Step 6.3:The Transmission system module of VBS-MACs is according to the flow table information for receiving to the base band letter in baseband system Number forwarded.
Advantage of the invention is that:There is provided computing resource and data link dynamic in a kind of C-RAN networks based on SDN The method of configuration, traditional base station institute is functional can virtually to turn to one group of virtual base station in data center;To virtual base station point Do not turn to VBS-PHY and VB-MAC virtually, another each VBS-PHY is associated with remote radio unit (RRU) RRH;Using controller management institute There is the virtual base station of data center so that the VBS-PHYs of multiple RRHs shares single VBS-MAC resources, and sets up virtual collection Group;Can arbitrarily switch in cluster the invention enables MSs, handover delay will not be produced;Occur cluster between switching when, control Device processed PC cluster resource can dynamically be configured and data link dynamic adjustment, make the Virtual Cluster will not be because of tide Nighttide effect produces substantial amounts of edge customer;The present invention can bring more preferable Consumer's Experience effect.
Brief description of the drawings
Fig. 1 is the flow chart of computing resource and data link dynamic configuration in the C-RAN networks based on SDN
Fig. 2 is the network architecture schematic diagram of computing resource and data link dynamic configuration in the C-RAN networks based on SDN
Fig. 3 is Virtual Cluster schematic diagram after VBS splits
Fig. 4 is VBS-MAC structural representations
Fig. 5 be cluster between switch schematic diagram
Specific embodiment
With reference to accompanying drawing, the invention will be further described, it is necessary to illustrate, the present embodiment is carried out premised on technology Implement, but be not limited to embodiment.
To overcome the limitation of current cellular networks, provided the invention provides being calculated in a kind of C-RAN networks based on SDN Source and the method for data link dynamic configuration, the method are split the PHY layer and MAC layer of virtual base station communication function, point Do not realize on a virtual machine, using the virtual base station of all data centers of SDN controller managements, make to set up empty between virtual base station Intend cluster (V-Cluster), and data link distribution carried out to Virtual Cluster, be provide between base station the cooperation of higher degree with Communication, makes the dynamic adjustment of the computing resource dynamic configuration of Virtual Cluster and data link.
The invention provides a kind of method of computing resource and data link dynamic configuration in C-RAN networks based on SDN, The network architecture of the method is as shown in Figure 2.
As shown in Fig. 2 radio frequency remote unit RRU, only retains wireless frequency spectrum RF layer functions, after being responsible for digital-to-analog conversion Radio-frequency receiving-transmitting function.The region of each RRH coverings is referred to as a cell (cell);
Indoor baseband processing unit BBU resource pools, comprising PHY layer, MAC layer and higher function;And utilize existing void Planization technology, one group of VBSs is virtualized into by BBU ponds, as shown in figure 3, including VBS-MACs and VBS-PHYs, Ke Yishi respectively Existing multiple VBS-PHYs connects single VBS-MAC, and wherein VBS-PHYs and VBS-MAC can share a physical server and also may be used To be separately mounted on different physical servers, user QoS and resource utilization in C-RAN networks can be improved;
In Fig. 2, SDN controllers, the controller is responsible for being controlled in global angle and manages all of in C-RAN networks VBSs in BBU resource pools;VBSs in BBU resource pools is carried out Virtual Cluster by controller, and for Virtual Cluster issues data Link flow table, the V-Cluster specifically meets:
(1) computational resource allocation of each V-Cluster is in a BBU pond;(2) each V-Cluster only processes one Individual single carrier;(3) each VBS-PHY is based on the quantity of any active ues in the position of RRH and coverage using single carrier and one Individual specific V-Cluster associations;
(4) the RRHs antennas in each Cluster are distributed in cluster regions as single coherent aerial array.
(5) algorithm complex of size and MAC layer that Cluster is based on Cluster distributes a VBS-MAC virtual machine.
As shown in figure 5, the present embodiment describes two virtual Clusters, Cluster#1 based on 6 cells networks And Cluster#2, flock size is respectively 3 and 3, and cluster operation single carrier is respectively single carrier #1 and single carrier #2; In the work urban district of a large amount of obstacles, Cluster#2 overlay areas represent user in suburb to the Regional Representative user of Cluster#1 coverings Area residential quarter.
Need to further illustrate, in downtown, each type of cost of serving ratio of mono- user of BS is corresponding in suburb BS High cost (cost needs computation complexity and account EMS memory occupation);Based on the standard index under voice call, it is assumed that can The probability that the total quantity acceptable communications of any active ues that row region is serviced by BBU ponds are blocked is 5%.
MSs by select random direction/angle d [rd] and speed S [m/s] from current region move to one it is new Region, wherein d and S scopes are respectively d [0,2 π], and S is [Smin, Smax].After design d and S parameter, MS is certain by movement Time or a certain distance determine a new position.
A kind of method of computing resource and data link dynamic configuration in C-RAN networks based on SDN, the method includes:
As shown in Fig. 2 in C-RAN networks, generally existing tidal phenomena temporally with location distribution, Cluster#1 overlay areas represent user in the work urban district of a large amount of obstacles, and Cluster#2 overlay areas represent user in suburb Residential quarter.MSs can occur two kinds of form switchings between cells:Intra-Cluster handover between cells and inter-Cluster Switching.
Situation one, when a large number of users MSs moves to another cell#2 in Cluster#1 from current cell#1, MSs Generation intra-Cluster handover between cells, step is as follows:
Step 1:As shown in figure 4, the environmental monitoring system module in VBS-MAC#1 virtual machines is detected in Cluster#1 There is a large number of users MSs switchings between cell#1 and cell#2, the user profile that environmental monitoring system will be migrated is sent to The control system module of VBS-MAC#1;
Step 2:As shown in figure 4, the control system module of VBS-MAC#1 calculates cell#2 according to the user profile for receiving VBS-PHY#2 in idle computing resources whether meet the demand of migrated userses computing resource.
Step 3:If idle computing resources meet the demand of migrated userses computing resource in the VBS-PHY#2 of cell#2, The configuration information of VBS-PHY#2 computing resources does not change;VBS-MAC#1 control systems are to VBS-PHY#1 computing resources Size is reconfigured.
Step 4:If idle computing resources are unsatisfactory for the demand of migrated userses computing resource in the VBS-PHY#2 of cell#2, Then VBS-MAC#1 control systems are reconfigured to VBS-PHY#2 computing resources, are allowed to meet migration MSs computing resources enough Demand;VBS-MAC#1 control systems are reconfigured to the size of VBS-PHY#1 computing resources.
Step 5:The configuration of VBS-MAC#1 computing resources does not change in virtual Cluster#1, and Virtual Cluster inside is small The information of user in VBS-MAC#1 computing resources is shared, by VBS-MAC#1 using multicast communication (CoMP) technology is cooperateed with interval Middle baseband system module is processed user profile, reduces the time delay that MSs brings by handover between cells.
Situation two, when a large number of users moves to Cluster#1 and Cluster#2 common edges because of tidal effect, user MSs can be disturbed by neighbor set group congruences, and the control system of current virtual cluster VBS-MAC#1 utilizes dynamic syndicated treatment (DJP) method, calculates and judges whether that the adjustment reconfigured with flock size of Virtual Cluster computing resource size occurs.
Dynamic syndicated processing method (DJP) described in the invention is specific as follows:
If spectral bandwidth has one group of t easet ofasubcarriers:Wherein K represents the quantity of all subcarriers;
For each subcarrier fk, there is a set for virtual single carrier cluster in network:
Each Virtual Cluster includes one group of RRHs:
And each Virtual Cluster includes one group of MSs:
The interference signal for receiving certain MS from certain RRH is
WhereinIt is in moment t signal from mobile stationSendThe greatest path loss for receiving,Refer toThe transimission power for sending,Refer to The shadow fading loss of time change.Mobile station MS be subject to current virtual cluster interference signal be:
Mobile station MS is closed on virtual single carrier for JkThe interference signal of cluster is:
The control system of current VBS-MAC#1 calculates the interference signal of all neighbouring Virtual Cluster that edge MS is received, And calculate user MS receive maximum neighbouring virtual single carrier cluster interference signal be:
Now, the neighbouring Virtual Cluster of maximum interference signal is cluster j=Cluster#2, and interference signal size is
If the maximum interference signal that MS is received from neighbouring virtual Cluster#2Less than or equal to MS from The interference signal that Cluster#1 is receivedWhen, MS switches between there is no cluster, and Virtual Cluster size is constant;Currently Cluster VBS-MAC#1 control systems are reconfigured to the VBS-PHY#3 computing resources of relevant edge RRH#3 in cluster, are allowed to foot It is enough to meet migration MSs demands;
If MS receives the maximum interference signal of neighbouring virtual Cluster#2Connect more than from Cluster#1 The interference signal for receivingWhen, will there is the dynamic of Virtual Cluster computing resource size in Cluster#1 and Cluster#2 State is configured, and is switched between MSs Cluster, and SDN controllers are to Virtual Cluster Cluster#1 and Cluster#2 data link The dynamic adjustment of flow table, and Clusters size also synchronous adjustment, comprise the following steps that:
Step 1:The edge customer letter that VBS-MAC#1 environmental monitoring systems will be migrated in Virtual Cluster Cluster#1 Breath sends the control system of VBS-MAC# in Cluster#2 to by the X2 interface of virtualization pool;
Step 2:The control system module of VBS-MAC#2 increased VBS- according to needed for the user profile for receiving is calculated MAC computing resource sizes, if idle computing resources meet the demand of migrated userses computing resource, VBS- in VBS-MAC#2 MAC#2 configurations are constant.Otherwise, VBS-MAC#2 controllers send solicited message to SDN controllers, and request increases VBS-MAC and calculates Resource;After controller receives request, neighbouring VBS-MAC#2 computing resources are reconfigured.
Step 3:The impacted RRH#3 of current cluster is removed and is added to Cluster#2 by controller from Cluster#1 In.
Step 4:The control system module of VBS-MAC#2 is according to institute in all any active ues information computing clusters in the cluster Some VBS-PHYs computing resources sizes, the virtual machine of VBS-PHY#3 ' newly-increased to Cluster#2, and to all VBS- in cluster PHYs computing resources are reconfigured.
Step 5:The control system of VBS-MAC#1 is matched somebody with somebody again on the VBS-PHY computing resources influenceed by migration in the cluster Put, close VBS-PHY#3 virtual machines in Cluster#1.
Step 6:SDN controllers issue the data of renewal to the VBS-MACs control systems of Cluster#1 and Cluster#2 Link flow table, comprises the following steps that:
Step 6.1:The VBS-MACs control systems of Cluster#1 and Cluster#2 are by the specific network topology of this cluster It is sent to SDN controllers.
Wherein, place BBU mediocre person reason server of the specific cluster network topology including Cluster#1 and Cluster#2 IP and physical MAC address, cluster in virtual machine and physical server map information etc..
Step 6.2:SDN controllers calculate forward-path, configuration management business according to topology, generate the list item of forward-path It is issued in the VBS-MACs Transmission system modules of Cluster#1 and Cluster#2.
Step 6.3:The Transmission system module of VBS-MACs is according to the flow table information for receiving to the base band letter in baseband system Number forwarded.
Above-mentioned provided embodiment is only preferable case in the present invention, and non-limiting protection scope of the present invention, all The modification made within principle of the present invention and modification etc., within protection scope of the present invention.

Claims (6)

1. a kind of method that dynamic resource allocation is calculated in C-RAN networks based on SDN, it is characterised in that methods described is by void The PHY layer and MAC layer for intending base station communication function are split, and are realized on a virtual machine respectively, all using SDN controller managements The virtual base station of data center, makes to set up Virtual Cluster between virtual base station, and to the computing resource dynamic configuration of Virtual Cluster.
2. method according to claim 1, the PHY layer and MAC layer of virtual base station communication function is split, its feature It is that multiple VBS-PHYs connect single VBS-MAC, VBS-PHYs shares a computing resource of VBS-MAC.
3. method according to claim 1, using all data centers of SDN controller managements virtual base station and make virtual Virtual Cluster is set up between base station, it is characterised in that SDN controllers are responsible for controlling and managing in global angle in C-RAN networks Manage the VBSs in all of BBU resource pools;VBSs in BBU resource pools is carried out Virtual Cluster by controller, and to Virtual Cluster Carry out the dynamic dispatching of computing resource.
4. method according to claim 1, the method for Virtual Cluster computing resource dynamic configuration is characterized in that, user moves There are two kinds of information switchings of form in dynamic platform MSs, Virtual Cluster computing resource will be reconfigured dynamically between cells, Described two situations are specific as follows:
Situation one, when a large amount of MSs move to another cell#2 in Cluster from current cell#1, there is intra- in MSs Cluster handover between cells, specific steps step is as follows:
Step 1:Environmental monitoring system module in VBS-MAC virtual machines detects generation a large number of users MSs in Virtual Cluster and cuts Change, the information that migrated userses occur is sent to environmental monitoring system the control system module of VBS-MAC;
Step 2:The control system module of VBS-MAC is hollow according to the VBS-PHY#2 that the user profile for receiving calculates cell#2 Whether not busy computing resource meets the demand of migrated userses computing resource;
Step 3:If idle computing resources meet the demand of migrated userses computing resource, VBS- in the VBS-PHY#2 of cell#2 The configuration information of PHY#2 computing resources does not change;VBS-MAC control systems are entered to the size of VBS-PHY#1 computing resources Row is reconfigured;
Step 4:If idle computing resources are unsatisfactory for the demand of migrated userses computing resource in the VBS-PHY#2 of cell#2, VBS-MAC control systems are reconfigured to VBS-PHY#2 computing resources, are allowed to meet migration MSs demands enough;VBS-MAC is controlled System processed is reconfigured to the size of VBS-PHY#1 computing resources;
Step 5:The configuration of VBS-MAC computing resources does not change in virtual Cluster, is utilized between Virtual Cluster internal zone Collaboration multicast communication (CoMP) technology, shares the information of user in VBS-MAC computing resources, by baseband system mould in VBS-MAC Block is processed user profile;
Situation two, when user MSs is disturbed by neighbor set group congruences, the control system of current virtual cluster VBS-MAC is utilized Dynamic syndicated treatment (DJP) method, calculates and determines whether to the adjustment that Virtual Cluster size occurs, and comprises the following steps that:
Step 1:When the interference signal that edge customer MSs receives neighbouring cluster is less than the interference signal of current cluster, MSs is not Switch between generation cluster, Virtual Cluster size is constant;Current cluster VBS-MAC control systems are to relevant edge RRH in cluster VBS-PHY computing resources are reconfigured, and are allowed to meet migration MSs demands enough;
Step 2:When the interference signal that edge customer MSs receives neighbouring cluster is less than the interference signal of current cluster, currently The edge customer information that Virtual Cluster VBS-MAC environmental monitoring systems will be migrated is transmitted by the X2 interface of virtualization pool To the control system of the VBS-MAC of neighbouring Virtual Cluster;
Step 3:The control system module of neighbouring VBS-MAC increased VBS-MAC according to needed for the user profile for receiving is calculated The size of computing resource, if idle computing resources meet the demand of migrated userses computing resource, VBS- in neighbouring VBS-MAC MAC configurations are constant;Otherwise, VBS-MAC controllers send solicited message to SDN controllers, and request increases VBS-MAC and calculates money Source, after controller receives request, reconfigures and distributes to neighbouring VBS-MAC computing resources;
Step 4:The edge RRH that SDN controllers are influenceed current cluster by migration removes from current cluster and is added to neighbouring void Intend cluster;
Step 5:The control system module of neighbouring VBS-MAC owns according in all any active ues information computing clusters in the cluster VBS-PHYs computing resource sizes, to all VBS-PHYs in the newly-increased VBS-PHY virtual machines of neighbouring Virtual Cluster and cluster Computing resource is reconfigured and adjusted;
Step 6:The control system of current VBS-MAC is matched somebody with somebody again on the VBS-PHYs computing resources influenceed by migration in current cluster Put and adjust.
5. in a kind of C-RAN networks based on SDN data link dynamic configuration method, it is characterised in that methods described is to void Intending cluster carries out data link distribution, and dynamic is adjusted with the change of flock size to make data link.
6. method according to claim 5, the method for Virtual Cluster data link dynamically distributes is characterized in that, the side Method carries out data link distribution to Virtual Cluster, and occurrence dynamics are adjusted with the change of flock size to make data link, specific step It is rapid as follows:
Step 1:Be sent to for the specific network topology of this cluster by current cluster and neighbouring Virtual Cluster VBS-MACs control systems SDN controllers;
Wherein, specific cluster network topology including the IP of BBU mediocre person's reason server where this cluster, physical MAC address and Map information of virtual machine and physical server etc. in cluster;
Step 2:SDN controllers calculate forward-path, configuration management business according to Virtual Cluster topology, generate the table of forward-path Item is simultaneously issued in the Transmission system module of current and neighbouring Virtual Cluster VBS-MACs;
Step 3:The Transmission system module of VBS-MACs is carried out according to the flow table information for receiving to the baseband signal in baseband system Forwarding.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107819496A (en) * 2017-10-30 2018-03-20 重庆大学 The 5G network systems and its cooperation control method of a kind of SDNization
CN112929898A (en) * 2019-12-05 2021-06-08 华为技术有限公司 Network management method, equipment and system
CN113727414A (en) * 2021-08-17 2021-11-30 吉林大学 Dynamic base station deployment and backhaul method in ultra-dense network based on virtual base station
CN114615687A (en) * 2022-03-22 2022-06-10 重庆邮电大学 Time delay perception network resource allocation method
WO2022245480A1 (en) * 2021-05-18 2022-11-24 Microsoft Technology Licensing, Llc Migrating physical layer in virtualized radio access networks
WO2023229699A1 (en) * 2022-05-26 2023-11-30 Microsoft Technology Licensing, Llc Creating elasticity and resiliency in virtualized rans

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103945548A (en) * 2014-04-29 2014-07-23 西安电子科技大学 Resource distribution system and task/service scheduling method in C-RAN
CN103945549A (en) * 2014-04-29 2014-07-23 西安电子科技大学 Baseband processing resource allocation system under C-RAN architecture
CN104540234A (en) * 2015-01-19 2015-04-22 西安电子科技大学 Associated task scheduling mechanism based on CoMP synchronization constraint in C-RAN framework
US20160353298A1 (en) * 2015-05-27 2016-12-01 Verizon Patent And Licensing Inc. Increasing an uplink performance in a c-ran environment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103945548A (en) * 2014-04-29 2014-07-23 西安电子科技大学 Resource distribution system and task/service scheduling method in C-RAN
CN103945549A (en) * 2014-04-29 2014-07-23 西安电子科技大学 Baseband processing resource allocation system under C-RAN architecture
CN104540234A (en) * 2015-01-19 2015-04-22 西安电子科技大学 Associated task scheduling mechanism based on CoMP synchronization constraint in C-RAN framework
US20160353298A1 (en) * 2015-05-27 2016-12-01 Verizon Patent And Licensing Inc. Increasing an uplink performance in a c-ran environment

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107819496A (en) * 2017-10-30 2018-03-20 重庆大学 The 5G network systems and its cooperation control method of a kind of SDNization
CN107819496B (en) * 2017-10-30 2020-10-13 重庆大学 SDN 5G network system and cooperation control method thereof
CN112929898A (en) * 2019-12-05 2021-06-08 华为技术有限公司 Network management method, equipment and system
WO2021109711A1 (en) * 2019-12-05 2021-06-10 华为技术有限公司 Network management method, device, and system
WO2022245480A1 (en) * 2021-05-18 2022-11-24 Microsoft Technology Licensing, Llc Migrating physical layer in virtualized radio access networks
US11533376B2 (en) 2021-05-18 2022-12-20 Microsoft Technology Licensing, Llc Migrating physical layer in virtualized radio access networks
CN113727414A (en) * 2021-08-17 2021-11-30 吉林大学 Dynamic base station deployment and backhaul method in ultra-dense network based on virtual base station
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
CN114615687A (en) * 2022-03-22 2022-06-10 重庆邮电大学 Time delay perception network resource allocation method
CN114615687B (en) * 2022-03-22 2023-06-27 重庆邮电大学 Network resource configuration method for time delay perception
WO2023229699A1 (en) * 2022-05-26 2023-11-30 Microsoft Technology Licensing, Llc Creating elasticity and resiliency in virtualized rans

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