CN106875651B - Network structure, software implementation long distance wireless head controller and long distance wireless head - Google Patents

Network structure, software implementation long distance wireless head controller and long distance wireless head Download PDF

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Publication number
CN106875651B
CN106875651B CN201611109636.5A CN201611109636A CN106875651B CN 106875651 B CN106875651 B CN 106875651B CN 201611109636 A CN201611109636 A CN 201611109636A CN 106875651 B CN106875651 B CN 106875651B
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rrh
long distance
distance wireless
wireless head
virtual
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CN106875651A (en
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陈炳荣
黄智源
赖勤宁
简晋弘
袁家伟
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Hon Hai Precision Industry Co Ltd
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Hon Hai Precision Industry Co Ltd
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to network structure, long distance wireless head controller and long distance wireless heads.The network structure includes forward pass network；RRH collection is connected with the forward pass network, for providing multiple long distance wireless heads (remote radio head, RRH) resource；And the wireless service chain (radio service chain, RSC) being connected with the forward pass network.The wireless service chain includes: coordinator, with the forward pass controller and at least, a cloud wireless access network (C-RAN) is connected respectively, for receiving the radio resource request signal of at least C-RAN transmission and received radio resource request signal being converted to a RRH control command；RRH controller is connected with the coordinator, for dividing the RRH resource of the RRH concentration according to the RRH control command to create virtual RRHs.The SD-RRH controller by the physics RRH division of resources at multi-disc, and using the virtual RRH of one or more SD-RRH piece creation software implementation, so that each virtual RRH is with different configurations to meet the needs of heterogeneous networks service.

Description

Network structure, software implementation long distance wireless head controller and long distance wireless head
Technical field
The present invention relates to wireless communication field more particularly to the long distance wireless head (remote of a kind of network structure, software implementation Radio head, RRH) controller and long distance wireless head.
Background technique
In the past few decades, cordless communication network is widely used.The operators of cordless communication network establish More and more base stations and base-station receiving station (base transceiver stations, BTS) are to meet cordless communication network In increasingly increased communication service demand.However, the cost for establishing a large amount of base station and base-station receiving station is high, it is logical meeting Cut operating costs the problem faced as operators under the premise of letter Demand and service.
Fig. 1 is the system construction drawing of wireless access network (radio access network, RAN) 10 in the prior art.Institute State wireless access network 10 using fixed point to fixed point distributed Base Band Unit (distributed base band units, BBUs).The distribution Base Band Unit is widely used in current 4G long term evolution (long term evolution, LTE) net In network.In Fig. 1, solid line indicates the network connection (can be wireless network connection or cable network connection) of physics.Dotted line table Show the connection between software interface and corresponding hardware device.
The wireless access network 10 includes long distance wireless head (RRH) collection 11.The long distance wireless head collection 11 and a distributed base band Unit 12 passes through the link connection of fixed point to fixed point.The link of the fixed point to fixed point uses common radio-frequency interface (Common Public Radio Interface, CPRI) standard, open source code proposal architecture station (Open Base Station Architecture Initiative, OBSAI) other suitable forward pass standards of standard or the standard combination.
The long distance wireless head collection 11 includes multiple long distance wireless head group 110a, 110b, 110c.No the end of a thread group is equal to Long distance wireless Transmit-Receive Unit.One includes source element, transceiver, amplifier (including power amplifier and/or low noise without the end of a thread Acoustic amplifier) and composite wave filter.The long distance wireless head be generally arranged at adjacent antennas position or the long distance wireless Head connect to constitute a part of antenna with the antenna.In the present invention, the long distance wireless head both can be for one solely Vertical long distance wireless head, or one with antenna be integrated without the end of a thread.Long-range nothing in the long distance wireless head collection 11 It can be connected between the end of a thread group 110 by network.
The distribution Base Band Unit 12 includes Base Band Unit collection.The Base Band Unit collection includes multiple Base Band Unit 121a, 121b, 121c, operations support systems (Operation Support System, OSS) 122 and equipment management system (Element Management System, EMS) 123.Described Base Band Unit 121a, 121b, 121c are connect by suitable software Mouth is connected with the equipment management system 123.
The distribution Base Band Unit 12 manages the long distance wireless head collection 11 for controlling.In the present embodiment, institute State each Base Band Unit 121a, 121b, 121c by the link of fixed point to fixed point respectively with corresponding long distance wireless head group 110a, 110b, 110c are connected.
The distribution Base Band Unit 12 is located at Mobile Network Operator (mobile network operator, MNO) End, so that network operator carries out network management and network operation.The wireless access network, which does not have, automatically configures Internet resources Ability, needs to manually set long distance wireless head, fixed link, and distributed Base Band Unit is configured to meet heterogeneous networks service Demand.The operator of wireless access network is also required to safeguard and expand long distance wireless head apparatus and corresponding distributed base band list Member 12 is to meet the wireless service needs increased.However, consolidating between long distance wireless head collection 11 and distributed Base Band Unit 12 Surely the setting flexibility connected is poor, and spends higher.Further, since the fixed deployment of wireless access network 10 lacks selection Flexibility, and optimize typically to being realized in specific application environment to meet the appearance in specific rush hour and position Amount demand, therefore, remaining time outside specific rush hour cause resource oversupply.
Summary of the invention
In view of the foregoing, it is necessary to provide a kind of network structure and long distance wireless head controller to solve existing long-range nothing The setting flexibility of the end of a thread collection 11 is poor, and spends high problem.
A kind of network structure in wireless communication system, the network structure include:
Forward pass network, for managing forward pass resource, the forward pass network includes a forward pass controller；
RRH collection is connected with the forward pass network, for provide multiple long distance wireless heads (remote radio head, RRH) resource；And
Wireless service chain (radio service chain, RSC), is connected with the forward pass network,
The wireless service chain includes:
Coordinator, with the forward pass controller and at least, a cloud wireless access network (C-RAN) is connected respectively, for connecing It receives the radio resource request signal that an at least C-RAN is sent and received radio resource request signal is converted into a RRH Control command；And
RRH controller is connected with the coordinator, for dividing what the RRH was concentrated according to the RRH control command RRH resource is to create virtual RRHs.
A kind of long distance wireless head (RRH) controller in wireless communication system, the RRH include:
An at least resource allocation application routine interface (resource allocation application program Interface, API), it is connected with a coordinator, for providing the first setting to remote procedure call；
Control management (control and management, C&M) application programming interfaces (API), with a Base Band Unit phase Connection, for providing the second setting to the remote procedure call；
Allocation device (resource allocation service, RAS), it is virtual remote for creating or discharging Journey is without the end of a thread (vRRH) resource；
Management server is controlled, the resource allocation application routine interface is run.
Virtual long is without the end of a thread (vRRH) manager, for providing a level of abstraction, the level of abstraction track and formed one from Mapping of at least virtual long without the end of a thread to physical remote without the end of a thread；And
Management agreement library is controlled, for providing control management agreement service for communication channel.
A kind of long distance wireless head (RRH), the long distance wireless head include:
Multiple communication interfaces transmit between different types of data for realizing between the RRH and a Base Band Unit；
Communications module is connect with the communication interface, and for controlling and managing data, the communications module includes:
Flow manager (RRH Flow Manager, RFM), for receiving the data of Base Band Unit transmission；
Communication function mould group, for extracting user data and control management from the data flow that the Base Band Unit initializes Data；
Mould group is calculated, for handling the baseband signal；
Radio processor, comprising:
RRH virtual-antenna port (virtual antenna port, RVA), it is more for material antenna function to be divided into A antenna sheet, and virtual-antenna port is created according to the antenna sheet of segmentation；And
Clock unit, for the Base Band Unit and the RRH to be synchronized processing；And
Control module is connect with the clock unit, and the control mould group includes:
RRH control function mould group is communicated to connect with a RRH controller；And
Resource mould group, for characterizing the configuration information of the RHH.
In the present invention, the SD-RRH controller by the physics RRH division of resources at multi-disc, and using one or more The virtual RRH of SD-RRH piece creation software implementation.Each virtual RRH has different configurations to meet the need of heterogeneous networks service It asks, so that it is poor to solve existing long distance wireless head collection setting flexibility, and spends high problem.
Detailed description of the invention
Fig. 1 is the schematic diagram of the system structure of Radio Access Network in the prior art.
Fig. 2 is the schematic diagram of the system architecture of Radio Access Network in an embodiment of the present invention.
Fig. 3 is the arrangement schematic diagram of the system model of Radio Access Network in an embodiment of the present invention.
Fig. 4 A and 4B are segmentation schematic diagram of the distal end without the end of a thread in Fig. 2.
Fig. 5-8 is the operating process schematic diagram of wireless access network in an embodiment of the present invention.
Fig. 9-10 is the arrangement schematic diagram of the system model of Radio Access Network in another embodiment of the present invention.
Figure 11 is the schematic diagram of the initial phase of wireless service supply in an embodiment of the present invention.
Figure 12 is the schematic diagram of the secondary phase of wireless service supply in an embodiment of the present invention.
Figure 13-14 is respectively the schematic diagram of second and third phase in an embodiment of the present invention.
Figure 15 is the schematic diagram of the wireless head controller of an embodiment of the present invention medium-long range.
Figure 16 is mapping of the virtual long without the end of a thread and physical remote without the end of a thread in the wireless head controller of medium-long range of the present invention Use figure.
Figure 17 is configuration diagram of an embodiment of the present invention medium-long range without the end of a thread.
Figure 18-23 is the operating process schematic diagram of wireless access network in an embodiment of the present invention.
Figure 24 is resource model schematic diagram of an embodiment of the present invention medium-long range without the end of a thread piece and virtual radio head.
Specific embodiment
It should be appreciated that in order to illustrate it is simple and clear, under suitable condition, repeat reference numerals are in different attached drawings In, to indicate corresponding or similar element.In addition, many implementation details are elaborated, in order to provide complete understanding of the present invention Embodiment.It will be appreciated, however, that those of ordinary skill in the art can not can also implement this hair by above-mentioned implementation detail It is bright.In other cases, method, program and component are not described in detail to avoid correlated characteristic description is obscured.In addition, institute State description be not construed as limiting embodiment described herein range.The diagram is not required to drawn to scale, and the ratio is certain Part is exaggerated to that details and feature of the invention is better shown.
In the present invention, the term " includes " refers to " include but be not necessarily limited to "；Specifically indicate the use of open description Language, such as organize similar user.
Referring to FIG. 2, showing the schematic diagram of the system architecture of wireless access network 20 in an embodiment of the present invention.It is described Wireless access network 20 uses wireless service chain (Radio Service Chain, RSC) model.In Fig. 2, solid line indicates physics Network connection (can be wireless network connection or cable network connection).Dotted line indicates that software interface and corresponding hardware are set Connection between standby.
The wireless access network 20 includes network infrastructure 25 and multiple distributed Base Band Unit collection (for example, cloud is wireless Access network domain 22a, 22b).The network infrastructure 25 includes shared long distance wireless head collection 21.The long distance wireless head collection 21 It is communicated to connect by a shared forward pass network 23 and a wireless service chain 24 with the distributed Base Band Unit collection.It is described shared remote Journey includes multiple software implementation long distance wireless heads (software defined remote radio heads, SD- without the end of a thread collection 21 RRHs)210.The software implementation long distance wireless head 210 is provided for providing physical remote without the end of a thread (physical RRH, pRRH) Source.
Each cloud Radio Access Network domain 22a/22b includes Base Band Unit collection 221a, a 221b, supports system 222a, 222b, And equipment management system (Element Management System, EMS) 223a, 223b.The Base Band Unit collection 221a, 221b is connected by executing software interface program with equipment management system 223a, 223b.The support system 222a, 222b can be operations support systems (Operation Support System, OSS) or an operation support system (Business Support System, BSS).The operations support systems at least have the function of following five: Network Management Department System, service offering, service release, service guarantee, client are concerned about.The service release includes network inventory, activation and supply.Institute Operation Support System is stated for handling order, income etc..The Operation Support System mainly support the management of product, order management, Yield management and customer account management.
Equipment management system (EMS) 223a/223b includes in telecommunication management network Model NE management layer (the network element- of (Telecommunications Management Network, NEL) Management layer, NEL) management network element (network elements, NE) system and application program.It is described The major function of EMS is divided into: area fault (Areas-Fault), configuration (Configuration), book keeping operation (Accounting), Performance (Accounting) and safety (Security).
Each EMS 223a/223b is controllably connected with support system 222a by suitable hardware/software interface.? In wireless access network 20, each cloud Radio Access Network domain (Cloud-RAN domain, C-RAN) 22a/22b can be by single net Possess and control in network operation, and by wireless service chain 24 and forward pass network 232 (for example, forward pass controller fronthaul (FH) controller 231) share the resource for sharing long distance wireless head collection 21.
The shared forward pass network 23 includes forward pass controller (FH controller) 231.The forward pass controller 231 For managing forward pass resource.Described cloud Radio Access Network domain 22a, 22b is shared far with described respectively by shared forward pass network 23 Journey is connected without the end of a thread collection 21.Being total between cloud Radio Access Network domain 22a, 22b and shared long distance wireless head collection 21 The implementation for enjoying forward pass network 23 includes the combination of wired network, wireless network and wired network and wireless network.
The wireless service chain 24 is connected with the shared forward pass network 23, and by the shared forward pass network 23 with Described cloud Radio Access Network domain 22a, 22b and the connection of shared long distance wireless head collection 21.Particularly, the wireless service chain 24 includes Coordinator 241 and a software implementation long distance wireless head controller (SD-RRH controller) 242.The coordinator 241 and the software Change long distance wireless head controller 242 to link together by software interface (interface 2).The coordinator 241 passes through software interface (interface 1) is connected with support system 222a, 222b of described wireless access network 22a, 22b, and passes through software interface (interface 3) It is connected with a forward pass controller.The coordinator 241 is for receiving the resource allocation order for coming self-support system 222a, 222b And a resource allocation request is sent to the software implementation long distance wireless head controller 242 and forward pass controller 231.The coordinator 241 are also used to coordinate the resource allocation between shared long distance wireless head collection 21 and forward pass network 23.
The software implementation long distance wireless head controller 242 passes through software interface (interface 4) and the shared long distance wireless head Collection 21 is connected, and is connected by software interface (interface 5) with Base Band Unit collection 221a, 221b of wireless access network 22a, 22b It connects.The software implementation long distance wireless head controller 242 is used to provide the physical remote of the shared journey without the end of a thread collection 21 without the end of a thread Source is divided into multiple software implementation long distance wireless head pieces.Software can be created that by one or more software implementation long distance wireless head pieces The virtual long of change is without the end of a thread.The software implementation long distance wireless head controller 242 is used for according to support system 222a, 222b The request of transmission distributes long distance wireless head resource, and the application program for upper layer association requests resource provides unified interface (unified Interface, NB-Intf), and physical remote without in the end of a thread use SB interface (SB-Intf) configure and manage physical resource. The long distance wireless head of the software implementation can be dynamically assigned to distributed Base Band Unit different in multiple long distance wireless head nets.
The software interface (interface 1) includes that the communication between support system 222a, 222b and coordinator 241 connects Mouthful.The software interface (interface 1) makes support system 222a, 222b request long distance wireless head to the coordinator 241 Underlying network resources.
The software interface (interface 2) includes between coordinator 241 and software implementation long distance wireless head controller 242 Communication interface.The software interface (interface 2) makes the coordinator 241 that long distance wireless connector resource allocation is remote to software implementation Journey is wireless head controller 242.
The software interface (interface 3) includes the communication interface between coordinator 241 and forward pass controller 231.Institute Stating software interface (interface 3) makes the coordinator 241 by forward pass resource allocation to forward pass controller 231.
The software interface (interface 4) includes positioned at software implementation long distance wireless head controller 242 and shared journey without the end of a thread collection Communication interface between 21.The software interface (interface 4) makes the software implementation long distance wireless head controller 242 by long-range nothing The end of a thread configuration file is sent to shared journey without the end of a thread collection 21 so that shared journey carries out resource allocation without the end of a thread collection 21.
The software interface (interface 5) includes wirelessly connecing positioned at software implementation long distance wireless head controller 242 and different clouds Enter the communication interface between domain 22a, 22b Base Band Unit collection 221a, 221b.The software interface (interface 5) makes described soft Part long distance wireless head controller 242 controls the control and management that described Base Band Unit collection 221a, 221b execute long distance wireless head Movement.
Under aforesaid frame structure, forward pass (FH) network 23 can be shared by different operators, and then realized and be shared in not Long distance wireless head collection 21 in same cloud Radio Access Network domain (e.g., C-RAN 22a, 22b).Therefore, frame proposed by the present invention Structure can to realize more flexible and economic wireless access between different operators.
Referring to FIG. 3, showing the system model structural schematic diagram of wireless access network in an embodiment of the present invention.Fig. 3 Corresponding to the wireless access network 20 in Fig. 2.In the present embodiment, the wireless service chain 24 include wireless data processing figure and Corresponding forward pass network function.The wireless data processing figure is formed by the wireless header sequence of an at least virtual long.Fig. 3 is shown How the logic data model of wireless service chain is mapped to physical unit, and describes the position of each function inside physical unit It sets and relationship.
For example, BBU/RRH/FH configuration file be operations support systems 322 and long distance wireless head basis coordinator 341 it Between carry out wireless service resource allocation configuration configuration file.Long distance wireless head basis coordinator 341 is used for according to The configuration file that operations support systems 322 are sent creates long distance wireless head data processing figure (RRH data processing Graph, RRH-PG), and the long distance wireless head data processing figure of the creation is transformed into and is used for and the operations support systems 322 and the specific instructions that are communicated of forward pass controller 331.Long distance wireless head basis coordinator 341 further will be described The specific instructions of transformation are sent to software implementation long distance wireless head controller 342 so that software implementation long distance wireless head by unified interface Controller 342 distributes remote radio resource.
The software implementation long distance wireless head controller 342 is wireless for distributing long distance wireless head resource and creation virtual long Head (virtual RRH, vRRH).The SD-RRH controller 342 can create the mapping between virtual RRH and physics RRH.Example Such as, the SD-RRH controller 342 configures the configuration that the configuration file setting of virtual RRH is converted into physics RRH, and passes through SB The configuration configuration for the physics RRH that interface will convert into is applied to the physics RRH.In the configuration configuration of physics RRH.Physics Internal element and the corresponding virtual RRH function of creation is arranged in RRH, for example, RRH flow manager (RRH Flow Manager, RFM), RRH communication function (RRH Communication Function), RRH control function (RRH Control Function, RCTF), RRH base band function (RRH base band function, RBF), RRH virtual-antenna port (RRH Virtual antenna port, RVA), RRH physical antenna front end (RRH physical antenna front end, RPA)。
Similarly, the specific instructions are sent to by long distance wireless head basis coordinator 341 by unified NB interface Forward pass controller 331 is to distribute forward pass resource.The forward pass controller 331 distributes forward pass resource and the forward pass resource according to distribution Create virtual forward pass network (FH network, vFH).Before the forward pass controller 331 creates a virtual forward pass network and physics Pass the mapping between network.For example, the configuration file setting of virtual forward pass network is converted by the forward pass forward pass controller 331 The configuration of physics forward pass network configures, and the configuration for the physics forward pass network that will convert by SB interface is configured applied to described In physics forward pass network.
The SD-RRH controller 342 coordinates the physical remote without wire terminal resource (by division of resources/cutting) simultaneously Form software implementation long distance wireless head 310.Carrier data or transmitting data stream include each function of software implementation long distance wireless head 310 User data between module.The carrier or transmitting data stream are according to the data processing road inside software implementation long distance wireless head Diameter carries out data processing.On the other hand, a management stream includes controlling and managing data.The control and management data are by described The distributed Base Band Unit 321 of wireless access network is sent to the RCMF by shared forward pass network 33 to realize control and management Function.
The RCMF manage and monitor or control between the Base Band Unit 321 and software implementation long distance wireless head 310 according to The data traffic that one particular communication protocol carries out data transmission.The RCMF is capable of handling not according to the demand for services of BBU 321 Same transport protocol, such as CPRI, common radio-frequency interface, 1904.3.The RCMF function is capable of handling the control of the transmission of BBU 321 System and management data, execute specific control and management function.The RCMF further discriminates between and extracts user data and control Data are managed, and the user data and control management data are sent to RFM and RCTF.The RCMF manages the load Volume data stream or transmitting data stream including user data.The carrier data includes I/Q data, and the transmission data include non- I/Q data.Wherein, I/Q data indicate the data-signal of modulation, and are transmitted to target mobile device from the BBU 321.It is described RCMF manages different carrier/transmitting data streams, and carrier/transmitting data stream is distributed to suitable data processing function mould Block.When starting the function segmentation between the SD-RRH 310 and BBU 321, the RBF is according to the BBU's 321 Demand for services executes 321 partial function of BBU (PHY function or MAC function).Physical antenna function is divided by the RVA function Multiple, and virtual-antenna port is created using one or more antenna sheets.
Fig. 4 A and 4B are please referred to, 20 medium-long range of wireless access network in an embodiment of the present invention is shown and is grasped without the end of a thread segmentation Make schematic diagram.In present embodiment, wireless access network 20 is using the wireless service chain 24 in Fig. 2.In Figure 4 A, Base Band Unit BU1, BU2, BU3 correspond to different network operators.For example, Base Band Unit BU1 corresponding network operator 1, BU2 pairs of Base Band Unit Answer network operator 2, Base Band Unit BU3 corresponding network operator 3.
In one embodiment, software implementation long distance wireless head (being not illustrated in Fig. 4 A) is according to from the received money of coordinator 241 Source distribution request distributes RRH resource dynamically to create vRRH.The software implementation long distance wireless head is according to the vRRH of creation into one Mapping between step creation vRRH and pRRH.The resource allocation request point that the coordinator 241 is sent according to BU1, BU2 and BU3 With RRH resource.In one embodiment, the software implementation long distance wireless head controller 242 is according to the use of each network operator Family program and operation require to distribute the RRH resource.Wherein, user program can be real-time, non real-time transmission application program, institute Stating operation requirement can be such as peak data rate, area transmissions ability, Connection Density, delay and need for liquidity requirement.
The distribution request that the software implementation remote wireless controller 242 is sent according to BU1, BU2 and BU3 is by virtual RRH's Configuration file is transformed into the configuration configuration of physics RRH, and the configuration configuration for the physics RRH that will convert by SB interface is applied to The physics RRH (such as shared long distance wireless head collection) is to form a software implementation long distance wireless head 410a.
In the present embodiment, the software implementation long distance wireless head 410a is divided into 6 pRRH, and creates 3 vRRH 412a,412b,412c.One of pRRH is assigned to BU1, and two pRRH are assigned to BU2, and three pRRH are assigned to BU3.VRRH 412a, 412b, 412c include RCMF, RFM, RBF, RVA and RPAs 1-4.VRRH 412a, 412b, 412c establish virtual data communication link and the virtual data communication link by establishing with BU1, BU2 and BU3 respectively It is communicatively coupled with the mobile device.The RCMF is capable of handling different types of transport protocol, such as CPRI, ROE and newly Forward pass agreement (New Fronthaul Protocol, NFP).The RFM manages different carrier/transport streams and by the load Body/transport stream distributes to suitable data processing function module.The RBF is executed according to the service request of BU1, BU2 and BU3 Partial Base Band Unit function.The RVA includes virtual-antenna 1, virtual-antenna 2 and virtual-antenna 3.The RPAs 1-4 is more A RVA functional module is shared.The BU1, BU2 and BU3 send the data to target mobile device by the RPAs 1-4.
Similarly, in figure 4b, the software implementation long distance wireless head 410b is divided into 6 pRRH, and creates 6 and net The corresponding vRRH of user application BU1a/b, BU2a/b and BU3a/b of network operator.The virtual RRH and net of each foundation One user application of network operator is corresponding.The vRRH 414a is assigned to operation has application program 1 (such as eMBB) BU1a.The vRRH414b is assigned to the BU1b that operation has application program 2 (such as mMTC).The vRRH 414c is assigned to Operation has the BU2a of application program 1 (such as UR&LLC).The vRRH 414d, which is assigned to operation, application program 2 (such as mMBB) BU2b.The vRRH 414e is assigned to the BU3a that operation has application program 1 (such as mMTC).The vRRH 414f is assigned There is the BU3b of application program 2 (such as UR&LLC) to operation.The vRRHs 412a-f includes RCMF, RFM, RBF, RVA, and RPAs 1-4.The RPAs 1-4 is used to establish virtual data communication link so as to pass through for BU1a/b, BU2a/b, and the BU3a/b The data link and mobile device of foundation carry out data communication.Module RCMF, RFM, RBF in the present invention in Fig. 4 B, RVA and RPAs1-4 is as module RCMF, RFM, RBF, RVA and RPAs 1-4 in Fig. 4 A, and therefore, I will not elaborate.
RRH resource at virtual RRH and can be assigned to different network operator (such as operators by dynamic Ground Split 1-3) to guarantee the quality and security isolation that service.
As Fig. 5-8 shows the schematic diagram of the operating procedure of wireless access network system in an embodiment.Fig. 5 is shown The schematic diagram for the initial stage that wireless service is supplied in an embodiment of the present invention.The step starts from stage P1-1.In the rank In section P1-1, OSS 32a, 32b send a request for requiring RRH resource to coordinator 241.Shown coordinator 241 is asked according to this It seeks distribution RRH, FH resource and creates wireless data processing figure.
Particularly, in step 510, OSS (as supported system 22a, 22b) transmits a BBU/RRH/ to a coordinator 241 FH configuration file is to request the RRH resource in shared RRH pool 21.Then in step 515, RRH resource requirement is described Configuration file is established, and the configuration file of description FH resource requirement is established, and the BBU configuration file of description BBU attribute is established. The RRH resource requirement includes air interface, frequency, bandwidth, position, antenna topology, function separation, compression and transmission association View etc..The FH resource requirement includes bandwidth, service quality etc..The BBU attribute includes BBU identity, address etc..
In step 520, the coordinator 241 creates wireless data processing figure according to the BBU/RRH/FH configuration file And the wireless data processing figure of creation is transformed into specific order.The coordinator 241 is according to the specific instructions and SD- RRH controller 242 and FH controller 231 communicate to connect.The specific instructions are simultaneously sent to SD-RRH control by the coordinator 241 Device 242 processed.The SD-RRH controller 242 distributes RRH resource according to the specific instructions.
In step 530, the SD-RRH controller 242 distributes the RRH resource and creates vRRH configuration file.It is described The resource of RRH resource such as physical equipment or shared RRH pool 21.The SD-RRH controller 242 creates virtual RRH and object The step of expecting the mapping between RRH is as follows:
VRRH is indicated with vRRH-ID；
PRRH is indicated with { pRRH Slice-ID } or { Tx/Rx SigPath-ID }；
It will, wherein each path (Tx/Rx SigPath) for sending or receiving signal is controlled by pRRH piece；
The SD-RRH controller 242 replys the coordinator 241.
In step 540, the coordinator 241 sends the specific instructions to FH controller so that FH controller 231 Distribute FH resource.The FH controller 231 distributes FH resource and creates virtual FH network.The FH controller 231 is further created The mapping building between virtual FH network and physics FH network.It is understood that step 520 and the step of 540 in the present invention It can be interchanged.
In step 550, no matter success or failure, the FH controller 231 transmission one replies to the coordinator.One In embodiment, the coordinator 241 is updated also according to the reply of SD-RRH controller 242 and FH controller 231 or adjustment nothing Line data processing figure.
Then, which enters stage p1-2.At this stage in p1-2 coordinator 241 by RRH profileapplied in institute It states in SD-RRH controller 24.The SD-RRH controller 242 creates the mapping between vRRH and PRRH.Wherein, the vRRH It can be indicated with vRRH-ID, pRRH pRRH piece ID { pRRH Slice-ID } or transmission/reception signal path ID { Tx/Rx SigPath-ID } is indicated.Then, RRH-PG is changed into the corresponding configuration of physics RRH by the SD-RRH controller 24 File is simultaneously configured by SB interface according to the configuration file of transformation.
In step 560, the coordinator 241 requests the SD-RRH controller 242 that the RRH of virtual RRH is configured text Part is applied on virtual RRH.
In step 570, the configuration file of the virtual RRH is changed into corresponding physics by the SD-RRH controller 242 The configuration file of RRH, and the configuration file of the transformation is passed through into SB Application of Interface on the physics RRH, such as shared RRH Pool 21.In step 575, the physics RRH establishes internal element and creates virtual RRH functional block.
In step 580, no matter success or failure, the physics RRH replys the SD-RRH controller 242.
In step 590, no matter success or failure, the SD-RRH controller 242 replys the coordinator.Stage P1-2 Terminate.
Referring to FIG. 6, showing the process schematic for the follow-up phase that wireless service is supplied in an embodiment of the present invention. The process is since stage P1-3.In stage P1-3, the coordinator 241 controls forward pass profileapplied in the FH In device 231, so that RRH-PG is changed into physical network configuration file by the FH controller 231, and carries out phase by SB interface The configuration answered.
In step 620, virtual FH network equipments configuration file is changed into the physics FH network equipment and matched by FH controller 231 File is set, and by SB interface according to the physics FH network equipments configuration file configuration physics FH network equipment of conversion.
In act 630, no matter success or failure, the physics FH network equipment replys the FH controller.
In step 640, no matter success or failure, the FH controller 231 replys the coordinator 241.Stage P1-3 Terminate.
In step 650, the coordinator 242 replys vRRH to the OSS.Stage, P1-4 terminated.
Referring to FIG. 7, showing the process schematic for the second stage that wireless service is supplied in an embodiment of the present invention. The process is since stage P2-1.In the stage P2-1, BBU establishes the connection between vRRH.Then, the BBU is logical It crosses unified interface phase vRRH and sends a connection request.The SD-RRH controller 242 establishes the mapping between vRRH and pRRH.Its In, the vPPH is indicated with vRRH-ID, the pRRH pRRH piece ID { pRRH Slice-ID } or transmission/reception signal path ID { Tx/Rx SigPath-ID } indicate.The SD-RRH controller 242 configures the pRRH by SB interface, and to described BBU replys a connection result.
In step 720, the OSS322 sends one first connection request to the EMS.The first connection request packet Include vRRH information.
In step 720, the EMS transmits first connection request to the BBU.
In step 730, the BBU sends one second to the vRRH by the unified interface of SD-RRH controller 242 Connection request.In sub-step 735, the SD-RRH controller 242 executes mapping between vRRH and pRRH.
In step 740, the SD-RRH controller 242 configures the pRRH by SB interface.
In step 750, no matter success or failure, the pRRH replys the SD-RRH controller 242.
In step 760, no matter success or failure, the SD-RRH controller 242 replies to connection result described BBU.Stage, P2-1 terminated.
The process continues stage P2-2.At this stage in P2-2, the wireless stream of data establish in the BBU and Between pRRH.Wherein sending signal path is downlink path, the downlink path are as follows: BBU → pRRH → antenna receives signal Path is up path, the up path are as follows: antenna → pRRH → BBU.Wireless data stream protocol can be CPRI, RoE and New forward pass agreement (New Fronthaul Protocol, NFP).In ROE agreement, each wireless stream of data is by the wireless streams ID verifying.The wireless streams ID is associated with the transmission inside RRH/reception signal path.
In step 770, the BBU establishes the wireless stream of data between BBU and pRRH using Flow-ID.
In step 780, no matter success or failure, the physics RRH replys the pRRH.Stage, P2-2 terminated.
Referring to FIG. 8, described in an embodiment of the present invention, the process of the phase III of wireless service supply is illustrated Figure.The process is since stage P3.In stage P3, the BBU in cloud Radio Access Network domain can be with shared RRH pool In pRRH carry out data communication.
In step 810, the BBU and the pRRH establish wireless stream of data.Stage, P3 terminated.
Fig. 9-10 is please referred to, it is described for the physical arrangement of the system model of wireless access network in an embodiment of the present invention Schematic diagram.How the logic data model that Fig. 9 shows wireless service chain is mapped to inside physical unit, and description physical unit The position of each functional module and connection relationship.First network operator domain 92a (operator A) and second network operator's net Domain 92b (operator B) is connected with network infrastructure 94 respectively.
The flexibility that software implementation in the present invention shares long distance wireless head collection structure allows to construct an independent RSC fortune It seeks quotient (supplier of the network infrastructure 94).The network infrastructure 94 includes shared forward pass network 93 and shares remote Journey is without the end of a thread collection 91.The shared long distance wireless head collection 91 is controlled and is managed by a virtualization layer 940.The virtualization layer 940 Including RRH Infra coordinator 941 and FH controller 943.The RRH Infra coordinator 941 and the SD-RRH controller 942 are connected.The shared forward pass network 93 is connected with the FH controller 943.941 energy of RRH Infra coordinator Enough Internet resources are dynamically distributed by SD-RRH controller 942 and FH controller 943.
Each network operator domain 92a, 92b include OSS module 922a, 922b.Described OSS module 922a, 922b and one MNO NFV coordinator 921a, 921b are connected.Each coordinator in described MNO NFV coordinator 921a, 921b passes through Or- Vi interface and Virtual base facilities management (virtualized infrastructure manager, VIM) module are connected.Institute NFV framework is stated using network function virtualized infrastructure structure (network function virtualization Infrastructure, NFVI).The network function virtualized infrastructure structure includes soft and hardware, empty for providing deployment Infrastructure resources needed for quasi- network function (virtual network functions, VNFs).Virtual base facilities management Device (virtualized infrastructure manager, VIM) control one network virtualization infrastructure interface letter of management Number (network function virtualization infrastructure interface, NFVI) is to provider domain In Internet resources calculated, stored and managed.In one embodiment, described MNO NFV coordinator 921a, 921b and its He is connected VIM module.Other described VIM modules include, but are not limited to cloud Radio Access Network domain (BBU) VIM module, core VIM module.
MNO NFV coordinator 921a, 921b in network operator domain 92a, 92b is by sharing RRH infra VIM 923a/b is connected with the RRH Infra coordinator 941 of network infrastructure 94.In one embodiment, the shared RRH Infra VIM 923a/b distribution possesses in network operator 92a, 92b and by network operator domain 92a, 92b for use as NFV Management and coordination.The shared RRH infra VIM 923a/b is logical by unified interface and the RRH Infra coordinator 941 Letter connection.
As different selections, as shown in Figure 10, in other embodiments, the shared RRH infra VIM 923a/b is distributed in network infrastructure 94.In one embodiment, the RRH Infra VIM and RRH Infra Coordinator 941 combines a part for constituting network infrastructure 94.MNO NFV in network operator domain 92a, 92b Coordinator 921a, 921b are communicated by the unified interface (such as Or-Vi interface) and the coordinator 941 of network infrastructure 94 Connection.Remaining network structure part is similar with network structure in Fig. 9 in Figure 10, and description is not repeated herein.
Figure 11-14 is wireless access network system side operational flowchart in the present invention.The described wireless access network system is adopted With the NFV framework in Fig. 9 and 10.Further, Figure 11-14 shows the wireless access using the NFV framework in Fig. 9 and Figure 10 The operating process of network system.
Figure 11 shows the schematic diagram of wireless service supply initial stage in an embodiment.The step is opened from stage P1-1 Begin.In the stage P1-1, the OSS requests RRH resource to the RRH Infra coordinator 941.The RRH Infra Coordinator 941 triggers a series of program to distribute the RRH resource of shared long distance wireless head collection 91 and RH resource and establish corresponding Wireless data processing chart.
In step 1110a, the OSS by the BBU/RRH/FH configuration file send to MNO NFV coordinator 921a, 921b is to request RRH infra network resource.The configuration file of the RRH includes the demand for services of the RRH resource, example Such as, the RRH resource service demand can be air interface, frequency, bandwidth, position, antenna topology, function separation, pressure Contracting and transportation protocol etc..The FH configuration file includes the demand for services of FH resource, for example, the demand for services of the FH resource can Think bandwidth, service quality etc..The BBU configuration file includes the attribute of the BBU, such as the BBU attribute includes BBU body Part, address and the information for requiring creation wireless data processing chart etc..The wireless data processing chart is for establishing without line number According to stream.
In step 1110b, described MNO NFV coordinator 921a, 921b sends BBU/RRH/FH configuration file to institute State RRH VIM (for example, the RRH Infra VIM 923ab shared in Fig. 9).
In step 1110c, the BBU/RRH/FH configuration file is transmitted to the RRH Infra by the RRH VIM Coordinator 941.
In intermediate steps 1115, the RRH Infra coordinator 941 is created according to the BBU/RRH/FH configuration file Wireless data processing chart, and the wireless data processing chart is changed into and is used for and the SD-RRH controller 942 and FH The specific instructions that controller 940 is communicated.The RRH Infra coordinator 941 sends the specific instructions to the SD- RRH controller 942 and FH controller 943.
In step 1120, the RRH Infra coordinator 941 sends the specific instructions to the SD-RRH and controls Device 942 is to distribute RRH resource.In intermediate steps 1125, the SD-RRH controller 942 distributes RRH resource and creates a void Quasi- RRH (vRRH).The SD-RRH controller 942 is further created from virtual RRH to the mapping of physics RRH.The vRRH can To be indicated with vRRH-ID, pRRH pRRH piece ID { pRRH Slice-ID } or transmission/reception signal path ID { Tx/ Rx SigPath-ID } it indicates.
In step 1130, no matter success or failure, the SD-RRH controller 942 replys the RRH Infra and coordinates Device 941.
In step 1140, the specific instructions are sent to the FH controller by the RRH Infra coordinator 941 940 so that FH controller 940 distributes FH resource.
In step 1150, the FH controller 940 distributes the FH resource and establishes a virtual FH network.The FH control Device 940 processed establishes the mapping of a virtual FH network equipment to the physics FH network equipment.In one embodiment, the RRH Infra coordinator 941 updates or adjusts the wireless data processing according to the SD-RRH controller 942 and FH controller 940 Chart.Stage, P1-1 terminated.
In stage P1-2, the RRH Infra coordinator 941 controls RRH profileapplied in the SD-RRH In device 942.The SD-RRH controller 942 creates the mapping of vRRH to PRRH.Wherein, the vRRH can use vRRH-ID table Show, pRRH pRRH piece ID { pRRH Slice-ID } or transmission/reception signal path ID { Tx/Rx SigPath-ID } It indicates.Then, RRH-PG is changed into the corresponding configuration file of physics RRH and passes through SB interface by the SD-RRH controller 942 It is configured according to the configuration file of transformation.
In step 1160, the coordinator requests the SD-RRH controller 942 by the RRH configuration file of virtual RRH It applies on virtual RRH.It is controlled so that the specific instructions are sent to SD-RRH by the RRH Infra coordinator 941 Device 942 processed is so that SD-RRH controller 942 distributes RRH resource.
In step 1170, the configuration file of the virtual RRH is changed into corresponding physics by the SD-RRH controller 942 The configuration file of RRH, and the configuration file of the transformation is passed through into SB Application of Interface on the physics RRH.In step 1175 In, the physics RRH establishes internal element and creates corresponding virtual RRH functional block.
In step 1180, no matter success or failure, the physics RRH replys the SD-RRH controller 942.
In step 1190, no matter success or failure, the SD-RRH controller 942 replys the coordinator.Stage P1- 2 terminate.
Figure 12 shows the process schematic for the follow-up phase that wireless service is supplied in an embodiment of the present invention.The process Since stage P1-3.In stage P1-3, the RRH Infra coordinator 941 is by forward pass profileapplied in the FH In controller 940 so that RRH-PG is changed into physical network configuration file by the FH controller 940, and by SB interface into The corresponding configuration of row.
In step 1220, virtual FH network equipments configuration file is changed into physics FH network by the FH controller 940 Device configuration file, and by SB interface according to the physics FH network equipments configuration file configuration physics FH network equipment of conversion.
In step 1230, no matter success or failure, the physics FH network equipment replys the FH controller.
In step 1240, no matter success or failure, the FH controller 940 replys the RRH Infra coordinator 941.Stage, P1-3 terminated.
The process continues stage P1-4.In the stage P1-4, the RRH Infra coordinator 941 is to operation The OSS of the quotient field (for example, operator A) replys a vRRH.
In step 1250a, the RRH Infra coordinator 941 replys vRRH to the RRH VIM.Then, in step In middle 1250b, the RRH VIM replys vRRH to the MNO NFV coordinator 921a/b.Finally, in step 125c, it is described MNO NFV coordinator 921a/b replys vRRH to the OSS.
It please also refer to Figure 13 and Figure 14.Figure 13 show the signal of wireless service supply second stage in the present invention Figure.Figure 14 show the schematic diagram of wireless service supply phase III in the present invention.
In stage P2, the RRH VIM 923a/b establishes the connection between vRRH.Then, the RRH VIM 923a/b sends a connection request to vRRH by unified interface.The SD-RRH controller 942 is established between vRRH and pRRH Mapping.Wherein, the vPPH is indicated with vRRH-ID, and the pRRH is with pRRH piece ID { pRRH Slice-ID } or sends/connects The ID { Tx/Rx SigPath-ID } for receiving signal path is indicated.The SD-RRH controller 942 passes through described in the configuration of SB interface PRRH, and a connection result is replied to the RRH VIM 923a/b.Process shown in the process and Fig. 7 of stage P2 is similar Seemingly, description is not repeated herein.
After wireless stream of data between the RRH VIM 923a/b and the pRRH is established, which enters the stage P3.In stage P3 (as shown in figure 14), a RRH VIM in the domain C-RAN can with the pRRH in shared RRH pool into Row data communication.In one embodiment, the RRH VIM and the pRRH establish wireless stream of data.Specifically, the RHH VM 923a/b can be established and the pRRH (such as stage P3) wireless stream of data.The process and the mistake shown in Fig. 8 of the stage P3 Journey is similar, and description is not repeated herein.
Please also refer to Figure 15, it show the structural schematic diagram of SD-RRH controller 1500 in an embodiment of the present invention. In the present embodiment, the structure of the SD-RRH controller 1500 is identical as the structure of SD-RRH controller 242 in Fig. 2.
Respectively with coordinator (not shown), BBU, physics RRH are communicated to connect the SD-RRH controller 1500.In Figure 15 In, solid line indicates the network connection (can be wireless network connection or cable network connection) of physics.Dotted line indicates software interface And the connection between corresponding hardware device.
The SD-RRH controller 1500 by the physics RRH division of resources at multiple, and according to one or more pieces Create the virtual RRH of software implementation.The SD-RRH controller 1500 is further requested distribution RRH resource according to the OSS and is configured pRRH。
The SD-RRH controller 1500 includes the functional block of multiple software implementations.The functional block includes at least resource allocation Application programming interfaces (resource allocation application program interface, resource Allocation API) 1501, control management (C&M) API1502, allocation (RAS) 1503, validator 1504, control Management service 1505 processed, vRRH manager 1506, RRH information bank (RRH Information Base, RIB) 1507, RRH piece collection 1508, vRRH registration table 1509, resource manager 1510, connection manager 1511, logger 1512, control and management association Discuss library 1513 and monitoring detector 1514.In an at least embodiment, the SD-RRH controller 1500 includes a processor An and memory.The processor is able to carry out the functional module.
The resource allocation API 1501 is connect by software interface with the coordinator.The control Administration API 1502 It is connect with a BBU.The RAS103 is connected with the RRH piece collection 1508.The vRRH manager 1506 and the RRH piece collection RRH piece collection 1508 is connected.The resource manager 1510 is connected with the RRH information bank 1507 and RRH piece collection 1508 respectively It connects.The control and management agreement library 1513 are connected with the physics RRH.
The resource allocation API 1501 is connected by software interface with the coordinator (such as coordinator 241).It is described Control and Administration API 222 are connected with Base Band Unit (such as Base Band Unit 221a/b).The RAS 1503 and RRH piece collection 1508 It is connected.The vRRH manager 1506 is connected with the RRH piece collection and vRRH registration table 1509 respectively.The resource management Device 1510 is connected with the RRH information bank 1507 and RRH piece collection 1508 respectively.The C&M protocol library 1513 and the physics RRH (for example, shared pond RRH 21 in Fig. 2) is connected.
The resource allocation API 1501 is for mentioning remote procedure call (remote procedure calls, RPCs) It is arranged for first so that RRH resource is distributed or redistributed to external application remote request.The control Administration API 1502 It is arranged for providing second to remote procedure call so that external application (Base Band Unit collection 221a/b) is according to the BBU's The operation of the long-range control SD-RRH of request.
In one embodiment, the agreement that the control Administration API 1502 uses is determined for ORI C&M Protocol The following control management operation of justice: 1) health examination, setting time are reset；2) parameter is obtained, parameter is modified；3) it obtains State modifies state 4) it obtains mistake and 5) establishes object, delete object.The RAS103 is the resource allocation API's 1501 Specific implementation.The RAS103 is for creating or discharging the vRRH resource.
The validator 1504 is for providing authentication function.The application programming interfaces (API), which are called, needs authentication. Preset method is verified using user name and user password.The control and management service 1505 are the control management The specific implementation of API 1502.Execute the control Administration API 1502 can call one in the management agreement library 1513 or Multiple functions.The virtual RRH manager 1506 is for providing a level of abstraction.The level of abstraction for track a vRRH with it is right The mapping between pRRH answered.The resource manager 1510 provides the life cycle management of the RRH device of registration and according to need It asks and the global view of RRH resource is provided within the given time.The connection manager 1511 is for being responsible for session management.It is described Connection manager 1511 can generate a session management layer.The session management layer controls and manages meeting for creating and maintaining Words.
The logger 1512 is used to record the information for generating source from different logs.The log generates source The soft and hardware in RRH for detecting SD-RRH controller 1500 and pRRH operation.The logger 1512 is unified to be received Collection, storage and analysis log information.The control and management agreement library 1513 are the member in SD-RRH controller 1500 Part, for coordinating the communication between the SD-RRH controller 1500 and the SD-RRH.The SD-RRH supports the control And management agreement.The control and management agreement library 1513 are mainly that communication channel provides control and management service.
The monitoring detector 1514 be used for monitoring, alarm, report register pRRH device state by way of mention For the health status information of the RRH network hardware, to safeguard the operation of the SD-RRH.
In an at least embodiment, the SD-RRH controller 1500 divides according to from the received RRH resource of a coordinator One or more vRRH is created by microtomy with request.When the coordinator receives the request of distribution RRH resource of BBU The RRH resource allocation request is sent to the SD-RRH controller 1500.In one embodiment, SD-RRH controller 1500 In resource allocation API 1501 RRH distribution request is dispatched to the RAS1503.The RAS1503 responds request execution Segmentation RRH is operated and is allocated the RRH piece obtained after segmentation.The distribution information of RRH piece is sent to by the RAS1503 VRRH manager 1506 is to establish the mapping between vRRH and pRRH.The vRRH manager 1506 returns corresponding vRRH ID Again to the coordinator.
When the BBU, which sends one to the coordinator, terminates request to terminate session and release RRH resource, the coordination Device terminates request output to the resource allocation API 1501 of SD-RRH controller 1500 for described.The resource allocation API 1501 Send received termination request to the RAS1503.The RAS1503 is corresponding to the vRRH manager 1506 transmission one Resource release request.The vRRH manager 1506 discharges the vRRH resource according to the request.
The BBU sends the request for reconfiguring vRRH resource according to the demand of user application to the coordinator. In one embodiment, the control Administration API 1502, control and management service 1505 respectively with SD-RRH controller 1500 Management agreement library 1513 communicate connection to execute corresponding vRRH resource distribution operation.
Figure 16 is please referred to, the signal that SD-RRH controller in an embodiment of the present invention carries out vRRH to pRRH is shown Figure.In the present embodiment, the SD-RRH controller 1500 executes the cutting operation.The network connection of solid line expression physics (can be wireless network connection or cable network connection).Dotted line indicates the company between software interface and corresponding hardware device It connects.
Resource module 1621a is created by SD-RRH1620.Resource module 1621b is created by SD-RRH1621.Resource module 1621a and resource module 1621b represents the configuration configuration and state that device itself is carrying out.The SD-RRH controller RRH information bank (RRH Information Bases, RIBs) 1607a, 1607b in 1600 is stored in the SD-RRH control All relevant informations of the physics RRH registered in device 1600.
VRRH registration table 1609 includes one or more vRRH entry.The corresponding description one of each entry vRRH is commonly used VRRH (for example, the vRRH for being assigned to corresponding BBU 1630a, 1630b, 1630c).
Every group of vRRH distributes verifying of the unique id number (such as ID=1,2,3) as data stream link.It is provided in RRH Unique id number of generated every group of vRRH returns to the BBU after the distribution program of source.In the present embodiment, after session The release of vRRH resource should all be removed from the vRRH registration table 1609, and only RRH manager is (for example, such as Figure 15 institute The virtual RRH manager 1506 stated) the vRRH registration table 1609 can be accessed.
RRH piece collection 1608 includes multiple RRH pieces corresponding from different pRRH (for example, id number is 1,2,3,4,5,6,7 RRH piece).Wherein, one id number of the corresponding distribution of every RRH piece bar code.By the RRH piece of distribution in RRH piece collection 1608 It can be used, be in idle state without the RRH piece by distribution.The RRH piece collection 1608 can be by SD-RRH controller Software module access in 1600.The software module includes at least resource manager, RAS, virtual RRH manager and vRRH Registration table.
The SD-RRH controller 1600 can be dynamic by the software module according to user application/operation demand Carry out to state the mapping and cutting operation from vRRH to pRRH.The software module include RIB, RRH piece collection, resource manager, RAS, virtual RRH manager and vRRH registration table.Mapping between the vRRH and pRRH can recorde in monitoring resource and pipe It manages in table.In one embodiment, the monitoring resource and management table include vRRH id number, RRH piece id number, vRRH with The session persistence of mapping relations, BBU id number and configuration between pRRH.
Figure 17 is please referred to, the schematic diagram of SD-RRH structure in an embodiment of the present invention is shown.SD-RRH1700 difference With SD-RRH controller and BBU communication connection (being not illustrated in Figure 17).The SD-RRH controller controls the SD-RRH1700.Institute Stating SD-RRH1700 includes SD-RRH communications module 1710, SD-RRH communication interface 1712a-c, clock unit 1714, SD-RRH Control module 1720, SD-RRH calculate mould group 1740, wireless processor 1750 and antenna port 1760a-d.The SD-RRH is logical Believe mould group 1710 respectively with the SD-RRH communication interface 1712a-c, clock unit 1714, SD-RRH control module 1720 and SD-RRH calculates mould group 1740 and is electrically connected.
The SD-RRH controller 1720 respectively with the clock unit 1714, the SD-RRH communication module 1710, SD- RRH computing module 1740 and wireless processor 1750 are electrically connected.In the present embodiment, solid line indicates that the network of physics connects It connects and (can be wireless network connection or cable network connection).Dotted line indicates between software interface and corresponding hardware device Connection.
In an at least embodiment, the SD-RRH control module 1720, SD-RRH communications module 1710, SD-RRH meter Calculating mould group 1740 and radio processor 1750, (Field Programmable Gate Array, scene can compile by FPGA Journey gate array) it realizes.
The clock unit 1714 is used to the BBU and SD-RRH synchronizing processing.The BBU and SD-RRH It is linked.In one embodiment, the clock unit 1714 exports IEEE 1588/GPS data.
The SD-RRH communication interface 1712a-c includes different transport protocol, such as common radio-frequency interface protocol, Ethernet Agreement etc..The SD-RRH communication interface 1712a-c further includes the connectivity port of multiple corresponding different type agreements.Using difference The agreement of type can to carry out different types of data transmission between the BBU and the SD-RRH 1700.
The SD-RRH communications module 1710 includes communication function mould group (the communication function of software implementation Module, RCMF) 1711 and software implementation RRH flow manager (RRH flow manger, RFM) 1713.The RFM1713 is used for Receive the data that BBU is sent.The SD-RRH communication module 1710 can be there are many mode realized, wherein each described RCMF1711 for dynamically supporting different types of forward pass transport protocol, for example, common radio-frequency interface protocol, OBSAI agreement, Agreement etc. based on ethernet signal link.
The RCMF 1711 can extract user in the data flow between BBU and the SD-RRH communications module 1710 Data and C&M data.It include function separation and/or compressed data, the RCMF 1711 when determining in the user information extracted The user data is distributed into SD-RRH and calculates the progress data processing of mould group 1740.When the RCMF1711 determines user data For I/Q data, user data is transmitted directly to radio processor 1750, the radio processor by the RCMF 1711 1750 carry out corresponding data processing and radio-frequency front-end and antenna port 1760a-d are driven to send user data to corresponding use Family device.The C&M data extracted are further distributed to the SD-RRH control module 1720 to phase by the RCMF 1711 The system and network answered are configured.
The RFM 1713 is used to manage between the SD-RRH 1700 and BBU and the number with different type agreement According to the communication of stream.The agreement includes common radio-frequency interface protocol, new forward pass agreement etc..The RFM 1713 manages different loads The data are simultaneously distributed to corresponding functional module group and are counted accordingly by body stream (such as I/Q data) and transport stream (non-I/Q data) According to processing.In the present embodiment, the corresponding specific stream ID of each transport stream.External transport stream management function module generates institute Stream information is stated, and the stream information of generation is supplied to RFM 1713.
The SD-RRH control module 1720 includes RRH control function (RRH control function, RCTF) 1722 And virtual RRH, RRH piece resource mould group 1721.The RRH control function of the SD-RRH control module 1720 is used to pass through ORI C& M agreement is communicated with the SD-RRH controller, and the C&M order that processing SD-RRH controller is sent.The RRH control function 1722 according to the functional module for further configuring SD-RRH1700 from the received C&M data of SD-RRH controller.
In the present embodiment, the RRH control function 1722 characterizes the configuration of SD-RRH using resource mould group 1721, and Execute RRH cutting operation.The resource mould group 1721 includes wireless device object, transmission/reception signal path object, data Layer link objects, ethernet data-link object and common radio-frequency interface data link objects.The wireless device object is used In establishing resource allocation.The transmission/reception signal path object is used for by establishing stream ID task, physical antenna port is appointed Business, physical data link Port Task, MAC Address/IP address/Port Task generate path signature.The data layer link pair As for providing different types of link, and when Linktype leads to MAC Address/IP address to provide when ethernet link.
One resource allocation molecule (resource allocation numerator, RAN) and resource allocation denominator (resource allocation denominator, RAD) is used for RRH division of resources in flakes to form vRRH.Implement one In mode, if resource allocation denominator is set as 6, the molecule of the piece of the RRH is 1, then it represents that the RRH of the piece distribution 1/6 of RRH Resource (as shown in table 1).
Table 1
Figure 24 is please referred to, the schematic diagram of RRH piece and the resource model of virtual RRH is shown.It is created in the resource model One or more RRH pieces can indicate are as follows: vRRH-1 { RRH-Slice-1 }, vRRH-2 { RRH-Slice-2,3 }, vRRH-3 { RRH-Slice-45,6 }, wherein vRRH-1 { RRH-Slice-1 } indicates the corresponding RRH piece of vRRH-1, vRRH-2 { RRH- Slice-2,3 } indicate that the corresponding two RHH pieces of vRRH-2, vRRH-3 { RRH-Slice-45,6 } indicate corresponding three RHH of vRRH-3 Piece.2., 3., 4., 5., RRH piece is 6. indicated with 1. respectively in Figure 24.
Figure 17 is please referred to, it includes RRH baseband functions module 1741 that the SD-RRH, which calculates mould group 1740,.The RRH base band Functional module 1741 is for handling baseband signal.The RRH baseband functions module 1741 is the software divided according to function Change module, forms I/Q data for compressed data.The I/Q data of the conversion are sent to the radio processor 1750 It is handled.For example, the RRH baseband functions module 1741 can prepare data flow to be sent.The RRH baseband functions mould Block 1741 can be established and be dynamically configured to support different types of function point in the SD-RRH computing module 1740 The data compression cut or carried out simultaneously.
The radio processor 1750 includes RRH virtual-antenna port (Virtual Antenna Port, RVA) 1751, radio-frequency front-end (not shown) and antenna port 1752.The RVA1751 is for supporting sample rate to convert (sample Rate conversion, SRC) operation, Digital Up Convert (digital up-converter, DUC) operation, Digital Down Convert (digital down-converter, DDC) operation, crest factor reduction (crest factor reduction, CFR) behaviour Make and digital pre-distortion (digital pre-distortion, DPD) operates.Multiple enforceable RVA1751 can be wireless Being created and being configured dynamically into processor 1750 (for example, 3G, LTE, 5G) can work in the different communication technologys.Institute Antenna port 1752 is stated for sending after carrying out corresponding function treatment to signal by physical antenna or by physical antenna Received signal carries out function treatment.The function treatment includes analog-to-digital conversion, digital-to-analogue conversion and other radio frequency processing functions. The RPA1752 can be shared by multiple RVAs1751.Physical antenna function is divided by RRH virtual-antenna port 1751 Mutiple antennas piece, and virtual-antenna port is created using single or multiple antenna sheets.For example, in one embodiment, the day Work can be set under specific frequency and bandwidth in line end mouth 1752.The specific frequency and bandwidth can be by RRH virtual-antennas Ports share.RRH virtual-antenna port is used to create virtual-antenna port according to the demand of service and application.The demand Included in configuration file, including but not limited to air interface, frequency, channel width, position, antenna topology.The object It manages antenna and radio frequency resource can be by different virtual-antenna ports share.
Figure 18-23 shows the operating process flow chart of Radio Access Network.Figure 18 is virtual in an embodiment of the present invention RRH establishes the schematic diagram of the operation of Radio Access Network.Figure 19 is that virtual RRh foundation wirelessly connects in another embodiment of the present invention Enter the schematic diagram of the operation of network.
The BBU 1800 requests RRH resource to coordinator 1820.The coordinator is forwarded to SD-RRH controller 1830 The request.The SD-RRH controller 1830 distributes RRH resource according to the request to generate vRRH.The SD-RRH control The structure having the same of SD-RRH controller 1500 in device 1830 and Figure 15.
Please also refer to Figure 18 and 19.The BBU 1800 described in step 1901 sends to the coordinator 1800 and distributes RRH resource request.The BBU 1800 transmits a BBU/RRH/FH configuration file to coordinator 1800 to request distribution RRH money Source.Correspondingly, description has the configuration file of characterization RRH resource service demand to be established, and description has characterization FH resource service demand Configuration file be established, description have characterization BBU attribute BBU configuration file be established.The RRH resource includes connecing in the air Mouth, frequency, bandwidth, position, antenna topology, function separation, compression and transportation protocol etc..The FH resource include bandwidth, Service quality etc..The BBU attribute includes BBU identity, address etc..
The coordinator 1820 described in step 1903 described states SD-RRH control by sending corresponding specific instructions to Device 1830 is to send resource allocation request to the SD-RRH controller 1830.The SD-RRH controller 1830 is according to the request Carry out resource allocation.In step 1905, resource allocation API 1831 in the SD-RRH controller 1830 is according to receiving The specific instructions resource allocation request item is sent to the asset allocation service function in SD-RRH controller 1830 Module 1832.
In step 1907, the asset allocation service functional module 1832 is by RRH piece (such as ID in RRH piece collection 1840 RRH piece for 4) it is allocated.The RRH piece collection 1840 includes multiple RRH pieces.Wherein, every RRH piece corresponds to different physics RRH and every RRH piece is assigned corresponding id number.
In step 1909, the asset allocation service functional module 1832 informs that vRRH manager 1833 is provided according to pRRH The mapping between vRRH and pRRH is established in source.In step 1911, the vRRH manager 1833 accesses the vRRH registration table 1810 to distribute and create vRRH.The vRRH registration table 1810 includes one or more vRRH entries established, every vRRH Entry characterizes VRRH currently in use.The vRRH of each distribution include different id number (such as ID=1,2,3) with Just the link of data flow is distinguished.In step 1913, the vRRH manager 1833 is replied accordingly to the coordinator 1820 VRRH ID is to indicate the distribution that RRH resource is completed.
Figure 20 is the schematic diagram of the virtual RRH operating process of wireless access network in an embodiment of the present invention.In Figure 20, When the Base Band Unit (BBU) 2000 has the setting demand for reconfiguring or controlling the vRRH resource, the Base Band Unit BBU 2000 can send the C&M request of starting re-configuration process.Figure 21 is wireless access in another embodiment of the present invention The schematic diagram of the virtual RRH operating process of net.When the BBU has setting or reconfigures the demand of vRRH resource, the BBU Send the C&M request reconfigured.
In step 2101, the BBU sends the C&M request of configuration vRRH.
In step 2103, the C&M API 2011 receives C&M request and C&M request execution vRRH matches based on the received Process is set, and C&M described in chamber requests assignment to C&M server 2012.
In step 2015, the C&M server 2012 search in the virtual RRH manager 2013 vRRH and pRRH it Between mapping to obtain the information of pRRH corresponding with vRRH.
In step 2107, the virtual RRH manager 2013 gives corresponding pRRH information-reply to the C&M server 2012。
In step 2019, the C&M server 2012 accesses the function in the C&M protocol library 2014 and invocation protocol library Energy module is to realize that C&M is operated.
In step 2111, the C&M solicited message is sent to RRH 2020 by the C&M protocol library 2014.
In step 2113, the configuration that the RRH 2020 re-starts RRH sets and returns to the C&M protocol library 2014 A multiple confirmation signal.
In step 2115, the API result is replied to the BBU 2000 to inform BBU institute by the protocol library 2014 The re-configuration process for stating RRH is completed and reports corresponding state.
Figure 22 is that virtual RRH terminates the schematic diagram of operation in Radio Access Network in an embodiment of the present invention.Figure 23 is The virtual RRH of wireless access network terminates the method flow diagram of operation in an embodiment of the present invention.
As can be seen that BBU 2200 is requested by sending to terminate to coordinator 2220 with start-stop process in Figure 22, And session and release RRH resource are terminated when the BBU 2200 determines the session configuration for terminating vRRH.
Specifically, the BBU 2200 sends one to coordinator 2220 and terminates request in step 2301.
In step 2303, the coordinator 2220 sends to the SD-RRH controller 2230 and terminates request.In this reality It applies in mode, the coordinator 2220 is by sending C&M order to the resource allocation API 2231 of SD-RRH controller 2230 Termination request is sent to resource allocation API 2231 by mode.
In step 2305, the terminal request is sent to asset allocation service module by the resource allocation API 2231 2332。
In step 2307, the asset allocation service module 2332 sends a money to the virtual RRH manager 2233 Source release request is to inform that virtual RRH manager 2233 discharges specific vRRH resource.The virtual RRH manager 2233 is according to institute It states resource release request and discharges vRRH resource from vRRH registration table 2210.
In step 2309, it is described that the RRH manager 2233 informs that the asset allocation service module 2332 has discharged VRRH resource.
In step 2311, the asset allocation service module 2332 discharges corresponding RRH piece from RRH piece collection 2240.
In step 2313, coordination described in the result notice that the asset allocation service module 2332 discharges RRH resource Device 2220.
In the present invention, the SD-RRH controller and utilizes one or more by the physics RRH division of resources at multi-disc The virtual RRH of a SD-RRH piece creation software implementation.Wherein, each virtual RRH has different configurations to meet heterogeneous networks clothes The demand of business.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to the above preferred embodiment pair The present invention is described in detail, those skilled in the art should understand that, technical solution of the present invention can be carried out Modification or equivalent replacement should not all be detached from the spirit of technical solution of the present invention.

Claims (31)

1. the network structure in a kind of wireless communication system, which is characterized in that the network structure includes:
Forward pass network, for managing forward pass resource, the forward pass network includes a forward pass controller；
Long distance wireless head collection is connected with the forward pass network, for providing multiple long distance wireless head resources；And
Wireless service chain is connected with the forward pass network, and the wireless service chain includes:
Coordinator, with the forward pass controller and at least, a cloud wireless access network is connected respectively, for receiving described at least one Received radio resource request signal is simultaneously converted to a long distance wireless by the radio resource request signal of cloud wireless access network transmission Head control command；And
Long distance wireless head controller is connected with the coordinator, for dividing institute according to the long distance wireless head control command The long distance wireless head resource of long distance wireless head concentration is stated to create multiple virtual longs without the end of a thread.
2. network structure as described in claim 1, which is characterized in that the coordinator is created according to the radio resource request The wireless data processing figure is converted to the long distance wireless head control command by one wireless data processing figure, and will be described remote Journey is sent to the long distance wireless head controller without the end of a thread control command.
3. network structure as described in claim 1, which is characterized in that described the creation of long distance wireless head controller more than one virtual Long distance wireless head and multiple physical remotes turn multiple virtual longs without the configuration file setting of the end of a thread without the mapping between the end of a thread It changes multiple physical remotes into configure without the configuration of the end of a thread, and is answered according to the multiple physical remotes being converted into without the configuration configuration of the end of a thread For the multiple physical remote without the end of a thread.
4. network structure as claimed in claim 3, which is characterized in that the multiple physical remote is without the end of a thread according to the multiple Configuration configuration setting long distance wireless head internal element of the physical remote without the end of a thread.
5. network structure as described in claim 1, which is characterized in that divide the long distance wireless head resource include will it is described far Journey creates the multiple void at multiple long distance wireless head pieces, and according to multiple long distance wireless head pieces of segmentation without the end of a thread division of resources Quasi- long distance wireless head.
6. network structure as described in claim 1, which is characterized in that the coordinator is created according to the radio resource request The forward pass wireless data processing figure of the creation is converted into a forward pass control command by one forward pass wireless data processing figure, and will The forward pass control command is sent to forward pass controller.
7. network structure as claimed in claim 6, which is characterized in that the management forward pass resource includes distributing the forward pass money Source and multiple virtual forward pass configuration files are created according to the forward pass control command.
8. network structure as claimed in claim 7, which is characterized in that the virtual forward pass is configured text by the forward pass controller Part setting be changed into physics forward pass configuration file setting, and according to the configuration file of the physics forward pass set configuration physics before Pass network equipment.
9. network structure as described in claim 1, which is characterized in that described extremely according to long distance wireless head controller reception The connection request of a few cloud wireless access network, executing the connection request, to establish the virtual long wireless with physical remote without the end of a thread Mapping between head.
10. network structure as claimed in claim 9, which is characterized in that the long distance wireless head controller is according to described virtual Long distance wireless head and physical remote configure the multiple physical remote without the end of a thread without the mapping configuration between the end of a thread.
11. network structure as claimed in claim 10, which is characterized in that the multiple physical remote is without the end of a thread to described long-range Wireless head controller sends a return signal to inform the long distance wireless head controller confirmation payment received.
12. network structure as claimed in claim 11, which is characterized in that when receiving the return signal, the long-range nothing Connection result is replied to an at least cloud wireless access network by the end of a thread controller.
13. network structure as claimed in claim 12, which is characterized in that when the connection result is received, it is described at least One cloud wireless access network set an at least cloud wireless access network and the multiple physical remote without between the end of a thread without line number According to flow.
14. network structure as claimed in claim 13, which is characterized in that the wireless data traffic is tested by wireless streams identification Card.
15. the long distance wireless head controller in a kind of wireless communication system, which is characterized in that the long distance wireless head controller packet It includes:
An at least resource allocation application routine interface, is connected with a coordinator, for providing first to remote procedure call Setting；
Control management application programming interfaces, are connected, for providing second to the remote procedure call with a Base Band Unit Setting；
Allocation device, for creating or discharging virtual long without the end of a thread resource；
Management server is controlled, the resource allocation application routine interface is run.
Virtual long is wireless head manager, for providing a level of abstraction, the level of abstraction track and forms one from least one virtually Long distance wireless head is to mapping of at least physical remote without the end of a thread；And
Management agreement library is controlled, for providing control management agreement service for communication channel.
16. long distance wireless head controller as claimed in claim 15, which is characterized in that the long distance wireless head controller also wraps It includes:
Connection manager, for generating a session management layer；
Authenticator, for providing authentication function；
Information bank, for storing information of the physical remote without the end of a thread；
Long distance wireless head piece collection is connect with the allocation device and virtual long without the end of a thread, the long distance wireless respectively Head piece collection includes one group of long distance wireless head piece, wherein each long distance wireless head piece is corresponding without the end of a thread from different physical remotes, Each long distance wireless head piece is assigned a corresponding identification number；
Virtual long is connected, the virtual long is wireless without the end of a thread registration unit with the wireless head manager of the virtual long Head includes an at least virtual long wirelessly top mesh；
Resource manager is connected with described information storehouse, the life cycle of the long distance wireless head resource for managing registration；
Health monitor, for providing the health status information of the long distance wireless head network hardware；
Logger generates the information of resource for recording different logs.
17. long distance wireless head controller as claimed in claim 15, which is characterized in that the allocation device Xiang Suoshu Virtual long is wireless head manager sends the distribution information of the long distance wireless head piece with create an at least virtual long without The end of a thread and the mapping of at least physical remote without the end of a thread.
18. long distance wireless head controller as claimed in claim 16, which is characterized in that the resource allocation application routine interface The resource allocation request that the coordinator is sent is received, and sends the resource allocation request to the allocation Device.
19. long distance wireless head controller as claimed in claim 18, which is characterized in that the allocation device distributes institute State the long distance wireless head piece of long distance wireless head piece concentration.
20. long distance wireless head controller as claimed in claim 19, which is characterized in that the allocation device is according to institute It states physical remote and informs the wireless head manager of virtual long without the end of a thread to generate a virtual long without the end of a thread and map.
21. long distance wireless head controller as claimed in claim 20, which is characterized in that the wireless head manager of virtual long It is distributed by the access virtual long without the end of a thread registration unit and creates the virtual long without the end of a thread.
22. long distance wireless head controller as claimed in claim 21, which is characterized in that the virtual long is without the end of a thread to described Coordinator replys a corresponding wireless head identifier of virtual long to indicate to complete the configuration of the long distance wireless head resource.
23. long distance wireless head controller as claimed in claim 15, which is characterized in that the control manages application programming interfaces A control management request is received, the control management request is responded by an at least virtual long and carries out initialization group without the end of a thread State configuration, and control management request is sent to the control management server.
24. long distance wireless head controller as claimed in claim 15, which is characterized in that the control management server is from virtual Long distance wireless head manager obtains virtual long and obtains at least one without the end of a thread map information with the virtual long without the end of a thread pair Information of the physical remote answered without the end of a thread.
25. long distance wireless head controller as claimed in claim 24, which is characterized in that the wireless head manager of virtual long An at least physical remote is replied without the end of a thread information to the control management server.
26. long distance wireless head controller as claimed in claim 15, which is characterized in that the control management server accesses institute It states control management agreement library and calls the agreement library facility, the control is managed request and sent by the control management agreement library To the physical remote without the end of a thread.
27. long distance wireless head controller as claimed in claim 15, which is characterized in that the resource allocation application routine interface The termination request that the coordinator is sent is received, and termination request has been sent to the allocation device.
28. long distance wireless head controller as claimed in claim 27, which is characterized in that the allocation device Xiang Suoshu Virtual long is wireless, and head manager sends a corresponding resource release request to notify the wireless head manager of the virtual long to release Specific virtual long is put without the end of a thread resource.
29. the wireless head controller of virtual long as claimed in claim 28, which is characterized in that the wireless head tube of virtual long It manages device and informs that the allocation device discharges the specific virtual long without the end of a thread resource.
30. long distance wireless head controller as claimed in claim 29, wherein the allocation device discharges long distance wireless Head piece is concentrated with the specific virtual long without the corresponding long distance wireless head piece of the end of a thread resource, and to coordinator transmission one Redistribute result.
31. a kind of long distance wireless head, which is characterized in that the long distance wireless head includes:
Multiple communication interfaces pass between different types of data for realizing between the long distance wireless head and a Base Band Unit It send；
Communications module is connect with the communication interface, and for controlling and managing data, the communications module includes:
Flow manager, for receiving the data of Base Band Unit transmission；
Communication function mould group, for extracting user data and control management number from the data flow that the Base Band Unit initializes According to；
Mould group is calculated, for handling the user data and control management data；
Radio processor, comprising:
Virtual-antenna port for material antenna function to be divided into mutiple antennas piece, and is created according to the antenna sheet of segmentation empty Quasi- antenna port；And
Clock unit, for the Base Band Unit and the long distance wireless head to be synchronized processing；And
Control module is connect with the clock unit, and the control mould group includes:
Long distance wireless head control function mould group is communicated to connect with a long distance wireless head controller；And
Resource mould group, for characterizing the configuration information of the long distance wireless head.
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