CN106875651A - 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
CN106875651A
CN106875651A CN201611109636.5A CN201611109636A CN106875651A CN 106875651 A CN106875651 A CN 106875651A CN 201611109636 A CN201611109636 A CN 201611109636A CN 106875651 A CN106875651 A CN 106875651A
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rrh
controllers
virtual
vrrh
network
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CN106875651B (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)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to network structure, long distance wireless head controller and long distance wireless head.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：Telegon, it is connected with the forward pass controller and an at least cloud wireless access network (C RAN) respectively, for receiving radio resource request signal that an at least C RAN send and the radio resource request signal of reception being converted into a RRH control commands；RRH controllers, are connected with the telegon, for splitting the RRH resources of the RRH concentrations according to the RRH control commands to create virtual RRHs.The physics RRH division of resources into multi-disc is created the virtual RRH of software implementation using one or more SD RRH pieces by the SD RRH controllers so that each virtual RRH has different configurations to meet the demand 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 a kind of network structure, software implementation long distance wireless head (remote Radio head, RRH) controller and long distance wireless head.
Background technology
In the past few decades, cordless communication network is widely used.The operators of cordless communication network set up Increasing base station and base-station receiving station (base transceiver stations, BTS) are meeting cordless communication network In increasingly increased communication service demand.However, the cost for setting up substantial amounts of base station and base-station receiving station is high, it is logical meeting Cut operating costs the problem faced as operators on 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 distributed Base Band Unit is widely used in current 4G Long Term Evolutions (long term evolution, LTE) net In network.In Fig. 1, solid line represents 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 distributed base band of the long distance wireless head collection 11 and The link connection that unit 12 passes through 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.It is described to be equal to without the end of a thread group 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 is generally arranged at the position of adjacent antennas or the long distance wireless Head is connected with the antenna so as to constitute a part for 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 Can be connected by network between the end of a thread group 110.
The distributed 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 distributed Base Band Unit 12 is used to control the management long distance wireless head collection 11.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 distributed Base Band Unit 12 is located at Mobile Network Operator (mobile network operator, MNO) End, so that Virtual network operator carries out network management and network operation.The wireless access network is without automatically configuring Internet resources Ability is, it is necessary to manually set long distance wireless head, fixed link, 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 distribution base band list The wireless service needs that unit 12 is increased with satisfaction.However, consolidating between long distance wireless head collection 11 and distributed Base Band Unit 12 The setting flexibility of fixed connection is poor, and spends higher.Further, since the fixed deployment of wireless access network 10 lacks selection Flexibility, and realize optimizing meeting the appearance in specific rush hour and position typically in specific applied environment Amount demand, therefore, remaining time outside specific rush hour causes resource oversupply.
The content 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 problem high.
A kind of network structure in wireless communication system, the network structure includes：
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：
Telegon, with the forward pass controller and at least, a cloud wireless access network (C-RAN) is connected respectively, for connecing The radio resource request signal of reception is simultaneously converted to a RRH by the radio resource request signal of at least C-RAN transmissions described in receiving Control command；And
RRH controllers, are connected with the telegon, for splitting what the RRH was concentrated according to the RRH control commands RRH resources are creating virtual RRHs.
A kind of long distance wireless head (RRH) controller in wireless communication system, the RRH includes：
An at least resource allocation application routine interface (resource allocation application program Interface, API), it is connected with a telegon, 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；
Control management server, runs the resource allocation application routine interface.
Virtual long without the end of a thread (vRRH) manager, for providing a level of abstraction, the level of abstraction follow the trail of and formed one from An at least virtual long is without mapping of the end of a thread to physical remote without the end of a thread；And
Control management protocol library, for providing control management protocol service for communication channel.
A kind of long distance wireless head (RRH), the long distance wireless head includes：
Multiple communication interfaces, for realizing being transmitted between different types of data between the RRH and a Base Band Unit；
Communications module, is connected with the communication interface, and for controlling and managing data, the communications module includes:
Flow manager (RRH Flow Manager, RFM), the data for receiving Base Band Unit transmission；
Communication function module, for extracting user data and control management in the data flow that is initialized from the Base Band Unit Data；
Module is calculated, for processing the baseband signal；
Radio processor, including：
RRH virtual-antennas port (virtual antenna port, RVA), it is many for material antenna function to be divided into Individual antenna sheet, and virtual-antenna port is created according to the antenna sheet of segmentation；And
Clock unit, for the Base Band Unit to be synchronized into treatment with the RRH；And
Control module, is connected with the clock unit, and the control module includes：
RRH control function modules, communicate to connect with a RRH controllers；And
Resource module, the configuration information for characterizing the RHH.
In the present invention, the physics RRH division of resources into multi-disc, and is utilized one or more by the SD-RRH controllers SD-RRH pieces create the virtual RRH of software implementation.Each virtual RRH has different configurations to meet the need of heterogeneous networks service Ask, so that solving existing long distance wireless head collection sets that flexibility is poor, and spend problem high.
Brief description of the drawings
Fig. 1 is the schematic diagram of the system architecture 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 implementation method of the 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 be in the wireless head controller of medium-long range of the present invention virtual long without the end of a thread and mapping of the physical remote without the end of a thread Using 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 simple and clear in order to what is illustrated, under suitable condition, repeat reference numerals are in different accompanying drawings In, to represent corresponding or similar element.Additionally, many implementation details are elaborated, 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 and are described with correlated characteristic of avoiding confusion.Additionally, institute State description be not construed as limitation embodiment described herein scope.It is described diagram be not required to it is drawn to scale, and the ratio some Part is exaggerated to preferably show details of the invention and feature.
In the present invention, the term " including " refer to " include but be not necessarily limited to "；Specifically indicate the use of open description Language, such as organizes similar user.
Fig. 2 is refer to, the schematic diagram of the system architecture of wireless access network 20 in an embodiment of the present invention is shown.It is described Wireless access network 20 uses wireless service chain (Radio Service Chain, RSC) model.In fig. 2, solid line represents physics Network connection (can be wireless network connection or cable network connection).Dotted line represents that software interface and corresponding hardware set Connection between standby.
The wireless access network 20 includes network infrastructure 25 and multiple distribution 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 Communicated to connect with the distributed Base Band Unit collection by a shared forward pass network 23 and a wireless service chain 24.It is described shared remote Journey includes multiple software implementation long distance wireless head (software defined remote radio heads, SD- without the end of a thread collection 21 RRHs)210.The software implementation long distance wireless first 210 is used to provide physical remote without the end of a thread (physical RRH, pRRH) money 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 performing software interface program with equipment management system 223a, 223b.The support system 222a, 222b can be an operations support systems (Operation Support System, OSS) or an operation support system (Business Support System, BSS).The operations support systems at least have following five functions：NMS System, service offering, service release, service guarantee, client are concerned about.The service release includes network inventory, activation and supplies.Institute OSS is stated for processing order, income etc..The OSS mainly support the management of product, order management, Yield management and customer account management.
Equipment management system (EMS) 223a/223b includes being used 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 security (Security).
Each EMS 223a/223b is controllably connected by suitable hardware/software interface with support system 222a. 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 of shared 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 remote 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 Enjoying the implementation of 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 shared long distance wireless head collection 21 are connected.Especially, the wireless service chain 24 includes The software implementation long distance wireless head controller (SD-RRH controllers) 242 of telegon 241 and.The telegon 241 and the software Change long distance wireless head controller 242 to be linked together by software interface (interface 2).The telegon 241 passes through software interface (interface 1) is connected with support system 222a, 222b of described wireless access network 22a, 22b, and by software interface (interface 3) It is connected with a forward pass controller.The telegon 241 is used to receive the resource allocation order for coming self-support system 222a, 222b And send a resource allocation request to the software implementation long distance wireless head controller 242 and forward pass controller 231.The telegon 241 are additionally operable 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 with Base Band Unit collection 221a, 221b of wireless access network 22a, 22b by software interface (interface 5) Connect.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 distribution long distance wireless head resource of transmission, for the application program of upper strata association requests resource provides unified interface (unified Interface, NB-Intf), and configured and management physical resource using SB interfaces (SB-Intf) in physical remote is without the end of a thread. The long distance wireless head of the software implementation can be dynamically assigned to different distributed Base Band Unit in multiple long distance wireless head nets.
The software interface (interface 1) connects including the communication between system 222a, 222b of support and telegon 241 Mouthful.The software interface (interface 1) is such that support system 222a, 222b asks long distance wireless head to the telegon 241 Underlying network resources.
The software interface (interface 2) is including between telegon 241 and software implementation long distance wireless head controller 242 Communication interface.The software interface (interface 2) is such that the telegon 241 is remote to software implementation by long distance wireless joint resource allocation Journey is wireless head controller 242.
The software interface (interface 3) includes the communication interface between telegon 241 and forward pass controller 231.Institute Stating software interface (interface 3) causes the telegon 241 by forward pass resource allocation to forward pass controller 231.
The software interface (interface 4) including 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) causes 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) positioned at software implementation long distance wireless head controller 242 and different clouds including wirelessly connecing Enter the communication interface between domain 22a, 22b Base Band Unit collection 221a, 221b.The software interface (interface 5) causes described soft Part long distance wireless head controller 242 controls described Base Band Unit collection 221a, 221b to perform the control and management of long distance wireless head Action.
Under aforesaid frame structure, forward pass (FH) network 23 can be shared by different operators, and then realization is shared in not Long distance wireless head collection 21 in same cloud Radio Access Network domain (e.g., C-RAN 22a, 22b).Therefore, framework proposed by the present invention Structure can cause to realize more flexible and economic wireless access between different operators.
Fig. 3 is refer to, the system model structural representation of wireless access network in an embodiment of the present invention is shown.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 shows How the logic data model of wireless service chain is mapped to physical unit, and the position for describing each function of physical unit inside Put and relation.
For example, BBU/RRH/FH configuration files be operations support systems 322 and long distance wireless head basis telegon 341 it Between carry out the configuration configuration file of wireless service resource allocation.Long distance wireless head basis telegon 341 is used for according to described The configuration file that operations support systems 322 send creates long distance wireless head data processing figure (RRH data processing Graph, RRH-PG), and by the long distance wireless head data processing figure of the establishment be transformed into for the operations support systems 322 and the specific instructions that are communicated of forward pass controller 331.Long distance wireless head basis telegon 341 further will be described The specific instructions of transformation are sent to software implementation long distance wireless head controller 342 by unified interface so that software implementation long distance wireless head Controller 342 distributes remote radio resource.
The software implementation long distance wireless head controller 342 is used to distribute long distance wireless head resource and creation virtual long is wireless Head (virtual RRH, vRRH).The SD-RRH controllers 342 can create the mapping between virtual RRH and physics RRH.Example Such as, the configuration file setting of virtual RRH is converted into the SD-RRH controllers 342 the configuration configuration of physics RRH, and by SB The configuration configuration of the physics RRH that interface will convert into is applied to the physics RRH.In the configuration configuration of physics RRH.Physics RRH sets internal element and creates corresponding virtual RRH functions, for example, RRH flow managers (RRH Flow Manager, RFM), RRH communication functions (RRH Communication Function), RRH control functions (RRH Control Function, RCTF), RRH base band function (RRH base band function, RBF), RRH virtual-antennas port (RRH Virtual antenna port, RVA), RRH physical antennas front end (RRH physical antenna front end, RPA)。
Similarly, be sent to for the specific instructions by unified NB interfaces by the long distance wireless head basis telegon 341 Forward pass controller 331 is distributing forward pass resource.The distribution forward pass resource of forward pass controller 331 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, be converted into for the configuration file setting of virtual forward pass network by the forward pass forward pass controller 331 The configuration configuration of physics forward pass network, and the physics forward pass network that be will convert into by SB interfaces configuration configuration be applied to it is described In physics forward pass network.
The SD-RRH controllers 342 coordinate the physical remote without wire terminal resource (by division of resources/cutting) and Form software implementation long distance wireless first 310.Carrier data or transmitting data stream include each function of software implementation long distance wireless first 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 Footpath 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 to realize control and management by shared forward pass network 33 Function.
The RCMF manage and monitor or control the Base Band Unit 321 and software implementation long distance wireless first 310 between according to The data traffic that one particular communication protocol carries out data transmission.The RCMF can be processed not according to the demand for services of BBU 321 Same host-host protocol, such as CPRI, common radio-frequency interface, 1904.3.The RCMF functions can process the control of the transmissions of BBU 321 System and management data, perform specific control and management function.The RCMF is further discriminated between and is extracted user data and control Management data, and by the user data and control management data is activation to RFM and RCTF.The RCMF manages the load Volume data stream or the transmitting data stream including user data.The carrier data includes I/Q data, and the transmission packet includes non- I/Q data.Wherein, I/Q data represent the data-signal of modulation, and are sent 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 into suitable data processing function mould Block.When the function between the startup SD-RRH 310 and BBU 321 is split, the RBF is according to the BBU's 321 Demand for services performs the partial functions of BBU 321 (PHY functions or MAC functions).Be divided into for physical antenna function by the RVA functions Multiple pieces, and create virtual-antenna port using one or more antenna sheets.
Fig. 4 A and 4B are refer to, the medium-long range of wireless access network 20 splits behaviour without the end of a thread in showing an embodiment of the present invention 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 The different Virtual network operator of BU1, BU2, BU3 correspondence.For example, Base Band Unit BU1 map networks operator 1, Base Band Unit BU2 pairs Answer Virtual network operator 2, Base Band Unit BU3 map networks operator 3.
In one embodiment, software implementation long distance wireless head (being not illustrated in Fig. 4 A) is according to the money received from telegon 241 Source distribution request, dynamically distributes RRH resources to create vRRH.The software implementation long distance wireless head enters one according to the vRRH for creating Step creates the mapping between vRRH and pRRH.The resource allocation request point that the telegon 241 sends according to BU1, BU2, and BU3 With RRH resources.In one embodiment, use of the software implementation long distance wireless head controller 242 according to each Virtual network operator Family program and operation require the distribution RRH resources.Wherein, user program can be real-time, non real-time transmission application program, institute It can be such as peak data rate, area transmissions ability, Connection Density, delay and need for liquidity requirement to state operation 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 of the physics RRH that be will convert into by SB interfaces is applied to The physics RRH (for example sharing 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.Described vRRH 412a, 412b, 412c include RCMF, RFM, RBF, RVA and RPAs 1-4.The vRRH 412a, 412b, 412c set up virtual data communication link and the virtual data communication link by setting up with BU1, BU2, and BU3 respectively It is communicatively coupled with the mobile device.The RCMF can process different types of host-host protocol, such as CPRI, ROE and new 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 performed 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 quilts Multiple RVA functional modules are shared.BU1, BU2, and the BU3 send the data to target and move dress by the RPAs 1-4 Put.
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 correspondence of network operator.The vRRH 414a are assigned to operation application program 1 (such as eMBB) BU1a.The vRRH414b is assigned to operation the BU1b of application program 2 (such as mMTC).The vRRH 414c are assigned to Operation has the BU2a of application program 1 (such as UR＆LLC).The vRRH 414d are assigned to operation application program 2 (such as mMBB) BU2b.The vRRH 414e are assigned to operation the BU3a of application program 1 (such as mMTC).The vRRH 414f are allocated There is the BU3b of application program 2 (such as UR＆LLC) to operation.The vRRHs 412a-f include RCMF, RFM, RBF, RVA, and RPAs 1-4.The RPAs 1-4 are used to set up virtual data communication link so as to pass through for BU1a/b, BU2a/b, and the BU3a/b The data link of foundation enters row data communication with mobile device.Module RCMF, RFM, RBF in the present invention in Fig. 4 B, RVA and RPAs1-4 and module RCMF, RFM in Fig. 4 A, as RBF, RVA and RPAs 1-4, therefore, I will not elaborate.
RRH resources can be by dynamic Ground Split is into virtual RRH and is assigned to different Virtual network operator (such as operator 1-3) the quality and security isolation to ensure to service.
The schematic diagram of the operating procedure of wireless access network system in an implementation method is shown such as Fig. 5-8.Fig. 5 show The schematic diagram of the starting stage of wireless service supply 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 resources to telegon 241.Shown telegon 241 please according to this Seek distribution RRH, FH resource and create wireless data processing figure.
Especially, in step 510, OSS (as supported system 22a, 22b) transmits a BBU/RRH/ to a telegon 241 FH configuration files are asking the RRH resources in shared RRH pool 21.Then in step 515, RRH resource requirements are described Configuration file is established, and the configuration file for describing FH resource requirements is established, and the BBU configuration files for describing BBU attributes are established. The RRH resource requirements include that air interface, frequency, bandwidth, position, antenna topology, function are separated, compress and transmitted Agreement etc..The FH resource requirements include bandwidth, service quality etc..The BBU attributes are including BBU identity, address etc..
In step 520, the telegon 241 creates wireless data processing figure according to the BBU/RRH/FH configuration files And the wireless data processing figure of establishment is transformed into specific order.The telegon 241 is according to the specific instructions and SD- RRH controllers 242 and FH controllers 231 are communicated to connect.The specific instructions are simultaneously sent to SD-RRH controls by the telegon 241 Device processed 242.The SD-RRH controllers 242 distribute RRH resources according to the specific instructions.
In step 530, the SD-RRH controllers 242 distribute the RRH resources and create vRRH configuration files.It is described The resource of RRH resources such as physical equipment or shared RRH pool 21.The SD-RRH controllers 242 create virtual RRH and thing The step of expecting the mapping between RRH is as follows：
VRRH is represented with vRRH-ID；
PRRH is represented with { pRRH Slice-ID } or { Tx/Rx SigPath-ID }；
Will, wherein, the path (Tx/Rx SigPath) of each transmission or reception signal is controlled by pRRH pieces；
The SD-RRH controllers 242 reply the telegon 241.
In step 540, the telegon 241 sends the specific instructions to FH controllers so that FH controllers 231 Distribution FH resources.The distribution FH resources of FH controllers 231 simultaneously create virtual FH networks.The FH controllers 231 are further created The mapping building between virtual FH networks and physics FH networks.It is understood that step 520 and the step of 540 in the present invention It can be exchange.
In step 550, no matter success or failure, the FH controllers 231 transmission one replies to the telegon.One In implementation method, the telegon 241 updates or adjustment nothing always according to the reply of SD-RRH controllers 242 and FH controllers 231 Line data processing figure.
Then, the step enters stage p1-2.In the stage p1-2 telegon 241 by RRH profileapplieds in institute In stating SD-RRH controllers 24.The SD-RRH controllers 242 create the mapping between vRRH and PRRH.Wherein, the vRRH Can be represented with vRRH-ID, pRRH pRRH pieces ID { pRRH Slice-ID } or the ID of transmission/reception signal path { Tx/Rx SigPath-ID } is represented.Then, RRH-PG is changed into the corresponding configurations of physics RRH by the SD-RRH controllers 24 File is simultaneously configured by SB interfaces according to the configuration file of transformation.
In step 560, the telegon 241 asks the SD-RRH controllers 242 that the RRH of virtual RRH is configured into 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 controllers 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 share RRH Pool 21.In step 575, the physics RRH sets up internal element and creates virtual RRH functional blocks.
In step 580, no matter success or failure, the physics RRH replys the SD-RRH controllers 242.
In step 590, no matter success or failure, the SD-RRH controllers 242 reply the telegon.Stage P1-2 Terminate.
Fig. 6 is refer to, the process schematic of the follow-up phase of wireless service supply in an embodiment of the present invention is shown. The process is since stage P1-3.In stage P1-3, the telegon 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 controllers 231, and carries out phase by SB interfaces The configuration answered.
In step 620, virtual FH network equipments configurations file is changed into the physics FH network equipments and matched somebody with somebody by FH controllers 231 File is put, and by SB interfaces according to the physics FH network equipments configuration file configuration physics FH network equipments changed.
In act 630, no matter success or failure, the physics FH network equipments reply the FH controllers.
In step 640, no matter success or failure, the FH controllers 231 reply the telegon 241.Stage P1-3 Terminate.
In step 650, the telegon 242 replys vRRH to the OSS.Stage, P1-4 terminated.
Fig. 7 is refer to, the process schematic of the second stage of wireless service supply in an embodiment of the present invention is shown. The process is since stage P2-1.In the stage P2-1, BBU sets up and the connection between vRRH.Then, the BBU leads to Cross unified interface phase vRRH and send a connection request.The mapping that the SD-RRH controllers 242 are set up between vRRH and pRRH.Its In, the vPPH is represented with vRRH-ID, and the pRRH is with pRRH pieces ID { pRRH Slice-ID } or sends/reception signal path ID { Tx/Rx SigPath-ID } represent.The SD-RRH controllers 242 configure the pRRH by SB interfaces, 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 bag Include vRRH information.
In step 720, the EMS transmits first connection request to the BBU.
In step 730, the BBU sends one second by the unified interface of SD-RRH controllers 242 to the vRRH Connection request.In sub-step 735, the SD-RRH controllers 242 perform mapping between vRRH and pRRH.
In step 740, the SD-RRH controllers 242 configure the pRRH by SB interfaces.
In step 750, no matter success or failure, the pRRH replys the SD-RRH controllers 242.
In step 760, no matter success or failure, the SD-RRH controllers 242 reply to connection result described BBU.Stage, P2-1 terminated.
The process proceeds stage P2-2.In stage P2-2, the wireless stream of data set up in the BBU and Between pRRH.Wherein sending signal path is downlink path, and the downlink path is：BBU → pRRH → antenna, receives signal Path is up path, and the up path is：Antenna → pRRH → BBU.Wireless data stream protocol can be CPRI, RoE and New forward pass agreement (New Fronthaul Protocol, NFP).In ROE agreements, each wireless stream of data is by the wireless streams ID is verified.The wireless streams ID is associated with the transmission inside RRH/reception signal path.
In step 770, the wireless stream of data that the BBU is set up 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.
Fig. 8 is refer to, it is 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 enter row data communication.
In step 810, the BBU and pRRH sets up wireless stream of data.Stage, P3 terminated.
Fig. 9-10 are refer to, described is the physical arrangement of the system model of wireless access network in an embodiment of the present invention Schematic diagram.Fig. 9 shows how the logic data model of wireless service chain is mapped to inside physical unit, and description physical unit The position of each functional module and annexation.First network operator domain 92a (operator A) and the second Virtual network operator net Domain 92b (operator B) is connected with network infrastructure 94 respectively.
The flexibility of the shared long distance wireless head structure set of software implementation in the present invention allows to build an independent RSC fortune Battalion business (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 managed by a virtualization layer 940.The virtualization layer 940 Including RRH Infra telegons 941 and FH controllers 943.The RRH Infra telegons 941 and the SD-RRH controllers 942 are connected.The shared forward pass network 93 is connected with the FH controllers 943.The energy of RRH Infra telegons 941 Enough Internet resources are dynamically distributed by SD-RRH controllers 942 and FH controllers 943.
Each network operator domain 92a, 92b include OSS modules 922a, 922b.OSS modules 922a, 922b and one MNO NFV telegons 921a, 921b are connected.Each telegon in described MNO NFV telegons 921a, 921b passes through Or- Vi interfaces are connected with Virtual base facilities management (virtualized infrastructure manager, VIM) module.Institute NFV frameworks are 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 intending 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 with to provider domain In Internet resources calculated, stored and managed.In one embodiment, described MNO NFV telegons 921a, 921b and its He is connected VIM modules.Described other VIM modules include, but are not limited to cloud Radio Access Network domain (BBU) VIM modules, core VIM modules.
MNO NFV telegons 921a, 921b in network operator domain 92a, 92b is by shared RRH infra VIM 923a/b is connected with the RRH Infra telegons 941 of network infrastructure 94.In one embodiment, the shared RRH Infra VIM 923a/b distribution possesses for use as NFV in Virtual network operator 92a, 92b and by network operator domain 92a, 92b Management and coordination.The shared RRH infra VIM 923a/b are logical with the RRH Infra telegons 941 by unified interface 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 Telegon 941 combines the part for constituting network infrastructure 94.MNO NFV in network operator domain 92a, 92b Telegon 921a, 921b are communicated by the unified interface (such as Or-Vi interfaces) with the telegon 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 frameworks in Fig. 9 and 10.Further, Figure 11-14 shows the wireless access using the NFV frameworks in Fig. 9 and Figure 10 The operating process of network system.
Figure 11 shows the schematic diagram of wireless service supply starting stage in an implementation method.The step is opened from stage P1-1 Begin.In the stage P1-1, the OSS asks RRH resources to the RRH Infra telegons 941.The RRH Infra Telegon 941 triggers a series of program to distribute the RRH resources and RH resources of shared long distance wireless head collection 91 and set up corresponding Wireless data processing chart.
In step 1110a, the OSS by the BBU/RRH/FH configuration files send to MNO NFV telegons 921a, 921b is asking RRH infra network resources.Demand for services of the configuration file of the RRH comprising the RRH resources, example Such as, the RRH resource services demand can be separated for air interface, frequency, bandwidth, position, antenna topology, function, pressed Contracting and transportation protocol etc..The FH configuration files include the demand for services of FH resources, for example, the demand for services of the FH resources can Think bandwidth, service quality etc..The BBU configuration files include the attribute of the BBU, such as described BBU attributes include BBU bodies Part, address and requirement create information of wireless data processing chart etc..The wireless data processing chart is used to set up without line number According to stream.
In step 1110b, described MNO NFV telegons 921a, 921b sends BBU/RRH/FH configuration files to institute State RRH VIM (for example, the RRH Infra VIM 923ab shared in Fig. 9).
In step 1110c, the BBU/RRH/FH configuration files are transmitted to the RRH Infra by the RRH VIM Telegon 941.
In intermediate steps 1115, the RRH Infra telegons 941 are created according to the BBU/RRH/FH configuration files Wireless data processing chart, and by the wireless data processing chart be changed into for the SD-RRH controllers 942 and FH The specific instructions that controller 940 is communicated.The RRH Infra telegons 941 send the specific instructions to the SD- RRH controllers 942 and FH controllers 943.
In step 1120, the RRH Infra telegons 941 send the specific instructions to the SD-RRH controls Device 942 is distributing RRH resources.In intermediate steps 1125, the distribution RRH resources of SD-RRH controllers 942 simultaneously create a void Intend RRH (vRRH).The SD-RRH controllers 942 are further created from virtual RRH to the mapping of physics RRH.The vRRH can Represented with vRRH-ID, pRRH pRRH pieces ID { pRRH Slice-ID } or ID { Tx/ of transmission/reception signal path Rx SigPath-ID } represent.
In step 1130, no matter success or failure, the SD-RRH controllers 942 reply the RRH Infra and coordinate Device 941.
In step 1140, the specific instructions are sent to the FH controllers by the RRH Infra telegons 941 940 so that the distribution FH resources of FH controllers 940.
In step 1150, the FH controllers 940 distribute the FH resources and set up a virtual FH networks.The FH controls Device processed 940 sets up a virtual FH network equipments to the mapping of the physics FH network equipments.In one embodiment, the RRH Infra telegons 941 update or adjust the wireless data processing according to the SD-RRH controllers 942 and FH controllers 940 Chart.Stage, P1-1 terminated.
In stage P1-2, the RRH Infra telegons 941 control RRH profileapplieds in the SD-RRH In device 942.The SD-RRH controllers 942 create the mapping of vRRH to PRRH.Wherein, the vRRH can use vRRH-ID tables Show, pRRH pRRH pieces ID { pRRH Slice-ID } or the ID { Tx/Rx SigPath-ID } of transmission/reception signal path Represent.Then, RRH-PG is changed into the corresponding configuration files of physics RRH and by SB interfaces by the SD-RRH controllers 942 Configuration file according to transformation is configured.
In step 1160, the telegon asks the SD-RRH controllers 942 by the RRH configuration files of virtual RRH Apply on virtual RRH.So that, the specific instructions are sent to SD-RRH controls by the RRH Infra telegons 941 Device processed 942 is so that the distribution RRH resources of SD-RRH controllers 942.
In step 1170, the configuration file of the virtual RRH is changed into corresponding physics by the SD-RRH controllers 942 The configuration file of RRH, and by the configuration file of the transformation by SB Application of Interface on the physics RRH.In step 1175 In, the physics RRH sets up internal element and creates corresponding virtual RRH functional blocks.
In step 1180, no matter success or failure, the physics RRH replys the SD-RRH controllers 942.
In step 1190, no matter success or failure, the SD-RRH controllers 942 reply the telegon.Stage P1- 2 terminate.
Figure 12 shows the process schematic of the follow-up phase of wireless service supply in an embodiment of the present invention.The process Since stage P1-3.In stage P1-3, the RRH Infra telegons 941 are by forward pass profileapplied in the FH In controller 940 so that RRH-PG is changed into physical network configuration file by the FH controllers 940, and is entered by SB interfaces The corresponding configuration of row.
In step 1220, virtual FH network equipments configurations file is changed into physics FH networks by the FH controllers 940 Device configuration file, and by SB interfaces according to the physics FH network equipments configuration file configuration physics FH network equipments changed.
In step 1230, no matter success or failure, the physics FH network equipments reply the FH controllers.
In step 1240, no matter success or failure, the FH controllers 940 reply the RRH Infra telegons 941.Stage, P1-3 terminated.
The process proceeds stage P1-4.In the stage P1-4, the RRH Infra telegons 941 are to operation The OSS of the quotient field (for example, operator A) replys a vRRH.
In step 1250a, the RRH Infra telegons 941 reply vRRH to the RRH VIM.Then, in step In middle 1250b, the RRH VIM reply vRRH to the MNO NFV telegons 921a/b.Finally, it is described in step 125c MNO NFV telegons 921a/b reply vRRH to the OSS.
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 set up and the connection between vRRH.Then, the RRH VIM 923a/b sends a connection request by unified interface to vRRH.The SD-RRH controllers 942 are set up between vRRH and pRRH Mapping.Wherein, the vPPH represents that the pRRH is with pRRH pieces ID { pRRH Slice-ID } or sends/connects with vRRH-ID The ID { Tx/Rx SigPath-ID } for receiving signal path is represented.The SD-RRH controllers 942 configure described by SB interfaces PRRH, and reply a connection result to the RRH VIM 923a/b.The process shown in the process of stage P2 and Fig. 7 is similar Seemingly, description is not repeated herein.
After wireless stream of data between the RRH VIM 923a/b and the pRRH is set up, the process enters the stage P3.In stage P3 (as shown in figure 14), the RRH VIM in C-RAN domains can enter with the pRRH in shared RRH pool Row data communication.In one embodiment, the RRH VIM and pRRH sets up wireless stream of data.Specifically, the RHH VM 923a/b can set up and the pRRH (such as stage P3) wireless stream of data.The process of the stage P3 and the mistake shown in Fig. 8 Journey is similar, and description is not repeated herein.
Please also refer to Figure 15, the structural representation of SD-RRH controllers 1500 in an embodiment of the present invention is shown. In the present embodiment, the structure of the SD-RRH controllers 1500 is identical with the structure of the SD-RRH controllers 242 in Fig. 2.
The SD-RRH controllers 1500 respectively with telegon (not shown), BBU, physics RRH communication connection.In Figure 15 In, solid line represents the network connection (can be wireless network connection or cable network connection) of physics.Dotted line represents software interface And the connection between corresponding hardware device.
The SD-RRH controllers 1500 by the physics RRH division of resources into multiple pieces, and according to one or more pieces Create the virtual RRH of software implementation.The SD-RRH controllers 1500 further according to OSS requests distribution RRH resources and are configured pRRH。
The SD-RRH controllers 1500 include the functional block of multiple software implementations.The functional block at least includes 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 processed 1505, vRRH managers 1506, RRH information banks (RRH Information Base, RIB) 1507, RRH piece collection 1508th, vRRH registration tablies 1509, explorer 1510, connection manager 1511, logger 1512, control and management association View storehouse 1513 and monitoring detector 1514.In an at least implementation method, the SD-RRH controllers 1500 include a processor And a memory.The processor is able to carry out the functional module.
The resource allocation API 1501 is connected by software interface with the telegon.The control management API1502 It is connected with a BBU.The RAS103 is connected with the RRH pieces collection 1508.The vRRH managers 1506 and the RRH pieces collection RRH pieces collection 1508 is connected.The explorer 1510 is connected with the RRH information banks 1507 and RRH pieces collection 1508 respectively Connect.The control and management agreement storehouse 1513 are connected with the physics RRH.
The resource allocation API 1501 is connected by software interface with the telegon (such as telegon 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 pieces collection 1508 It is connected.The vRRH managers 1506 are connected with the RRH pieces collection and vRRH registration tablies 1509 respectively.The resource management Device 1510 is connected with the RRH information banks 1507 and RRH pieces collection 1508 respectively.The C＆M protocol libraries 1513 and the physics RRH (for example, the shared RRH ponds 21 in Fig. 2) is connected.
The resource allocation API 1501 is used to carry remote procedure call (remote procedure calls, RPCs) Set for first so that RRH resources are distributed or redistributed to external application remote request.The control Administration API 1502 Set so that external application (Base Band Unit collection 221a/b) is according to the BBU's for providing second to remote procedure call The operation of request remote control SD-RRH.
In one embodiment, described to control the agreement that Administration API 1502 is used be ORI C＆M Protocol, and fixed The following control management operation of justice：1) health examination, setting time resets；2) parameter is obtained, parameter is changed；3) obtain State, changes state 4) obtain mistake and 5) set up object, delete object.The RAS103 is the resource allocation API 1501 Implement.The RAS103 is used to create or discharge the vRRH resources.
The validator 1504 is used to provide authentication function.The application programming interfaces (API) are called and need authentication. Default method is verified using user name and user cipher.The control and management service 1505 are the control management API's 1502 implements.Perform the control Administration API 1502 can call one in the management agreement storehouse 1513 or Multiple functions.The virtual RRH managers 1506 are used to provide a level of abstraction.The level of abstraction be used for follow the trail of a vRRH with it is right Mapping between the pRRH for answering.The explorer 1510 provides the life cycle management of the RRH devices of registration and according to need Seek the global view that RRH resources are provided within the given time.The connection manager 1511 is used to be responsible for session management.It is described Connection manager 1511 can generate a session management layer.The session management layer is used to create and maintain to control and manage meeting Words.
The logger 1512 is used to record the information for generating source from different daily records.The daily record generation source includes For the soft and hardware in the RRH for detecting SD-RRH controllers 1500 and pRRH operations.The unification of the logger 1512 is received Collection, storage and analysis daily record information.The control and management agreement storehouse 1513 are the unit in SD-RRH controller 1500 Part, for coordinating the communication between the SD-RRH controllers 1500 and the SD-RRH.The SD-RRH supports the control And management agreement.The control and management agreement storehouse 1513 are mainly communication channel and provide control and management service.
The monitoring detector 1514 is used to be carried by way of monitoring, alarm, the state of the pRRH devices of report register For the health status information of the RRH network hardwares, so as to safeguard the operation of the SD-RRH.
In an at least implementation method, the SD-RRH controllers 1500 are according to the RRH resources received from a telegon point One or more vRRH are created by microtomy with request.When the telegon receives the request of distribution RRH resources of BBU The RRH resource allocation requests are sent to the SD-RRH controllers 1500.In one embodiment, SD-RRH controllers 1500 In resource allocation API 1501 RRH distribution requests are dispatched to the RAS1503.The RAS1503 responds request execution The RRH pieces that segmentation RRH is operated and will obtained after segmentation are allocated.Be sent to for the distribution information of RRH pieces by the RAS1503 VRRH managers 1506 are setting up the mapping between vRRH and pRRH.The vRRH managers 1506 return corresponding vRRH ID Again to the telegon.
When the BBU sends one to the telegon terminates request to terminate session and release RRH resources, the coordination Device terminates asking output to the resource allocation API 1501 of SD-RRH controllers 1500 by described.The resource allocation API 1501 Send the termination request of reception to the RAS1503.It is corresponding that the RAS1503 sends one to the vRRH managers 1506 Resource release request.The vRRH managers 1506 discharge the vRRH resources according to the request.
The BBU sends the request for reconfiguring vRRH resources according to the demand of user application to the telegon. In one embodiment, it is described control Administration API 1502, control and management service 1505 respectively with SD-RRH controllers 1500 Management agreement storehouse 1513 communicate connection and operated with performing corresponding vRRH resource distributions.
Figure 16 is refer to, showing SD-RRH controllers in an embodiment of the present invention carries out the signal of vRRH to pRRH Figure.In the present embodiment, the SD-RRH controllers 1500 perform the cutting operation.Solid line represents the network connection of physics (can be wireless network connection or cable network connection).Dotted line represents the company between software interface and corresponding hardware device Connect.
Resource module 1621a is created by SD-RRH1620.Resource module 1621b is created by SD-RRH1621.Resource module 1621a and resource module 1621b represent configuration configuration and the state that device is carrying out in itself.The SD-RRH controllers RRH information banks (RRH Information Bases, RIBs) 1607a, 1607b storages in 1600 are in SD-RRH controls All relevant informations of the physics RRH registered in device 1600.
VRRH registration tablies 1609 include one or more vRRH entries.What each entry vRRH correspondences description one was commonly used VRRH (for example, being assigned to the vRRH of corresponding BBU 1630a, 1630b, 1630c).
Every group of vRRH distributes the id number (such as ID=1,2,3) of a uniqueness as the checking of data stream link.In RRH moneys Unique id number of every group of vRRH produced after the distribution program of source returns to the BBU.In the present embodiment, after session The release of vRRH resources should all be removed from the vRRH registration tablies 1609, and only RRH managers are (for example, such as Figure 15 institutes The virtual RRH managers 1506 stated) the vRRH registration tablies 1609 can be accessed.
RRH pieces collection 1608 includes multiple RRH pieces corresponding from different pRRH (for example, id number is 1,2,3,4,5,6,7 RRH pieces).Wherein, every RRH pieces bar code correspondence one id number of distribution.By the RRH pieces of distribution in RRH pieces collection 1608 Can use, idle state is in without the RRH pieces by distribution.The RRH pieces collection 1608 can be by SD-RRH controllers Software module access in 1600.The software module at least includes explorer, RAS, virtual RRH managers and vRRH Registration table.
The SD-RRH controllers 1600 can be dynamic by the software module according to the demand of user application/operation Carry out the mapping from vRRH to pRRH and cutting operation to state.The software module include RIB, RRH piece collection, explorer, RAS, virtual RRH managers and vRRH registration tablies.Mapping between the vRRH and pRRH can be recorded in monitoring resource and pipe In reason table.In one embodiment, the monitoring resource and management table include vRRH id numbers, RRH piece id numbers, vRRH with The session persistence of mapping relations, BBU id numbers and configuration between pRRH.
Figure 17 is refer to, the schematic diagram of SD-RRH structures in an embodiment of the present invention is shown.SD-RRH1700 distinguishes With SD-RRH controllers and BBU communication connections (being not illustrated in Figure 17).The SD-RRH controllers control the SD-RRH1700.Institute Stating SD-RRH1700 includes SD-RRH communications modules 1710, SD-RRH communication interfaces 1712a-c, clock unit 1714, SD-RRH Control module 1720, SD-RRH calculates module 1740, wireless processor 1750 and antenna port 1760a-d.The SD-RRH leads to Letter module 1710 respectively with the SD-RRH communication interfaces 1712a-c, clock unit 1714, SD-RRH control modules 1720 and SD-RRH calculates module 1740 and electrically connects.
The SD-RRH controllers 1720 respectively with the clock unit 1714, the SD-RRH communication modules 1710, SD- RRH computing modules 1740 and wireless processor 1750 are electrically connected.In the present embodiment, solid line represents that the network of physics connects Connect (can be wireless network connection or cable network connection).Dotted line is represented between software interface and corresponding hardware device Connection.
In an at least implementation method, the SD-RRH control modules 1720, SD-RRH communications modules 1710, SD-RRH meter (Field Programmable Gate Array, scene can compile by FPGA to calculate module 1740 and radio processor 1750 Journey gate array) realize.
The clock unit 1714 is used to for the BBU and SD-RRH to synchronize treatment.The BBU and SD-RRH It is linked.In one embodiment, the output of the clock unit 1714 IEEE 1588/GPS data.
The SD-RRH communication interfaces 1712a-c includes different host-host protocols, such as common radio-frequency interface protocol, Ethernet Agreement etc..The SD-RRH communication interfaces 1712a-c also includes the connectivity port of multiple correspondence different type agreements.Using difference The agreement of type can cause to carry out different types of data transfer between the BBU and the SD-RRH 1700.
The SD-RRH communications modules 1710 include communication function module (the communication function of software implementation Module, RCMF) 1711 and software implementation RRH flow managers (RRH flow manger, RFM) 1713.The RFM1713 is used for Receive the data that BBU sends.The SD-RRH communication modules 1710 can have the mode of various realizations, wherein described in each RCMF1711 be used for dynamically support different types of forward pass host-host protocol, for example, common radio-frequency interface protocol, OBSAI agreements, Agreement based on ethernet signal link etc..
User is extracted in the data flow that the RCMF 1711 can be between BBU and the SD-RRH communications modules 1710 Data and C＆M data.When it is determined that the user profile for extracting includes function separation and/or compressed data, the RCMF 1711 The user data is distributed into SD-RRH calculating modules 1740 carries out data processing.When the RCMF1711 determines user data It is 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 drive radio-frequency front-end and antenna port 1760a-d to send user data to corresponding use Family device.The C＆M data distributions that the RCMF 1711 will further be extracted are to the SD-RRH control modules 1720 with to phase The system and network answered are configured.
The RFM 1713 is used to manage between the SD-RRH 1700 and BBU and with the number of 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 Body stream (such as I/Q data) and transport stream (non-I/Q data) are simultaneously counted the data distribution to corresponding functional module group accordingly According to treatment.In the present embodiment, one specific stream ID of each transport stream correspondence.External transport stream management function module produces institute Stream information is stated, and the stream information of generation is supplied to RFM 1713.
The SD-RRH control modules 1720 include RRH control functions (RRH control function, RCTF) 1722 And virtual RRH, RRH piece resource module 1721.The RRH control functions of the SD-RRH control modules 1720 are used to pass through ORI C＆ M agreements communicate with the SD-RRH controllers, and the C＆M orders that treatment SD-RRH controllers send.The RRH control functions 1722 functional modules that SD-RRH1700 is further configured according to the C＆M data received from SD-RRH controllers.
In the present embodiment, the RRH control functions 1722 characterize the configuration of SD-RRH using resource module 1721, and Perform RRH cutting operations.The resource module 1721 includes wireless device object, transmission/receive 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 setting up resource allocation.The transmission/reception signal path object is used to appoint by setting up stream ID task, physical antenna port Business, physical data link Port Task, MAC Address/IP address/Port Task produce path signature.The data layer link pair As for providing different types of link, and provided when Linktype is for ethernet link and lead to MAC Address/IP address.
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 to 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 refer to, the schematic diagram of the resource model of RRH pieces and virtual RRH is shown.Created in the resource model One or more RRH pieces can be expressed as：VRRH-1 { RRH-Slice-1 }, vRRH-2 { RRH-Slice-2,3 }, vRRH-3 { RRH-Slice-45,6 }, wherein, vRRH-1 { RRH-Slice-1 } represents vRRH-1 one RRH piece of correspondence, vRRH-2 { RRH- Slice-2,3 } vRRH-2 two RHH pieces of correspondence are represented, vRRH-3 { RRH-Slice-45,6 } represents three RHH of vRRH-3 correspondences Piece.2., 3., 4., 5., RRH pieces are 6. represented in Figure 24 with 1. respectively.
Figure 17 is refer to, the SD-RRH calculates module 1740 includes RRH baseband functions module 1741.The RRH base band Functional module 1741 is used to process baseband signal.The RRH baseband functions module 1741 is the software divided according to function Change module, I/Q data are formed for compressed data.The I/Q data of the conversion are sent to the radio processor 1750 Processed.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 in the SD-RRH computing modules 1740 and be dynamically configured to support different types of function point Cut or while the data compression for carrying out.
The radio processor 1750 includes RRH virtual-antennas port (Virtual Antenna Port, RVA) 1751, radio-frequency front-end (not shown) and antenna port 1752.The RVA1751 is used to support that sample rate changes (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) operation.Multiple enforceable RVA1751 can be wireless Being created in processor 1750 and be configured dynamically into can (for example, 3G, the LTE, 5G) work in the different communication technologys.Institute Antenna port 1752 is stated for carrying out being sent by physical antenna after corresponding function treatment to signal or by physical antenna The signal of reception 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.Be divided into for physical antenna function by the RRH virtual-antennas port 1751 Multiple antenna sheets, and create virtual-antenna port using single or multiple antenna sheets.For example, in one embodiment, the day Line end mouthful 1752 can set and be operated under CF and bandwidth.The CF and bandwidth can be by RRH virtual-antennas Ports share.The RRH virtual-antennas port is used to create virtual-antenna port according to the demand of service and application.The demand It is included in configuration file, including but not limited to air interface, frequency, channel width, position, antenna topology.The thing Reason antenna and radio frequency resource can be by different virtual-antenna ports shares.
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 sets up the schematic diagram of the operation of Radio Access Network.Figure 19 is for virtually RRh foundation wirelessly connects in another implementation method of the invention Enter the schematic diagram of the operation of network.
The BBU 1800 asks RRH resources to telegon 1820.The telegon is forwarded to SD-RRH controllers 1830 The request.The SD-RRH controllers 1830 distribute RRH resources to generate vRRH according to the request.The SD-RRH controls Device 1830 has identical structure with the SD-RRH controllers 1500 in Figure 15.
Please also refer to Figure 18 and 19.The BBU 1800 described in step 1901 sends to the telegon 1800 and distributes RRH resource requests.The BBU 1800 transmits a BBU/RRH/FH configuration files to ask distribution RRH to provide to telegon 1800 Source.Correspondingly, description has the configuration file for characterizing RRH resource service demands to be established, and description has sign FH resource service demands Configuration file be established, description have characterize BBU attributes BBU configuration files be established.The RRH resources include connecing in the air Mouth, frequency, bandwidth, position, antenna topology, function separation, compression and transportation protocol etc..The FH resources include bandwidth, Service quality etc..The BBU attributes are including BBU identity, address etc..
The telegon 1820 described in step 1903 described states SD-RRH controls by the way that corresponding specific instructions are sent to Device 1830 sends resource allocation request with to the SD-RRH controllers 1830.The SD-RRH controllers 1830 are according to the request Carry out resource allocation.In step 1905, resource allocation API 1831 in the SD-RRH controllers 1830 is according to receiving The specific instructions send resource allocation request item to asset allocation service function in SD-RRH controllers 1830 Module 1832.
In step 1907, the asset allocation service functional module 1832 is by RRH pieces (such as ID in RRH pieces collection 1840 RRH pieces for 4) it is allocated.The RRH pieces collection 1840 includes multiple RRH pieces.Wherein, the different physics of every RRH pieces correspondence RRH and every RRH pieces are assigned corresponding id number.
In step 1909, the asset allocation service functional module 1832 informs that vRRH managers 1833 are provided according to pRRH The mapping that source is set up between vRRH and pRRH.In step 1911, the vRRH managers 1833 access the vRRH registration tablies 1810 distributing and create vRRH.The vRRH registration tablies 1810 include the vRRH entries of one or more foundation, every vRRH Entry characterizes the VRRH being presently using.The vRRH of each distribution include for example, different id numbers (ID=1,2,3) with Just the link of data flow is distinguished.In step 1913, the vRRH managers 1833 are replied accordingly to the telegon 1820 VRRH ID are indicating to have completed the distribution of RRH resources.
Figure 20 is the schematic diagram of the virtual RRH operating process of wireless access network in an embodiment of the present invention.In fig. 20, When the Base Band Unit (BBU) 2000 has to be reconfigured or control the setting demand of the vRRH resources, the Base Band Unit BBU 2000 can send the C＆M requests for starting re-configuration process.Figure 21 is wireless access in another implementation method of the invention The schematic diagram of the virtual RRH operating process of net.When the BBU has setting or reconfigures the demand of vRRH resources, the BBU The C＆M requests that transmission is reconfigured.
In step 2101, the C＆M requests of the BBU send configurations vRRH.
In step 2103, the C＆M API 2011 receive C＆M requests and perform vRRH according to the C＆M requests for receiving and match somebody with somebody Process is put, and C＆M described in chamber requests assignment to C＆M servers 2012.
In step 2015, the C＆M servers 2012 search in the virtual RRH managers 2013 vRRH and pRRH it Between mapping obtaining the information of pRRH corresponding with vRRH.
In step 2107, corresponding pRRH information-replies are given the C＆M servers by the virtual RRH managers 2013 2012。
In step 2019, the C＆M servers 2012 access the work(in the C＆M protocol libraries 2014 and invocation protocol storehouse Energy module is operated with realizing C＆M.
In step 2111, the C＆M solicited messages are sent to RRH 2020 by the C＆M protocol libraries 2014.
In step 2113, the RRH 2020 re-starts the configuration setting of RRH and to C＆M protocol libraries 2014 times A multiple confirmation signal.
In step 2115, the API results are replied to the BBU 2000 to inform BBU institutes by the protocol library 2014 The re-configuration process for stating RRH has completed and has reported corresponding state.
Figure 22 is the schematic diagram of virtual RRH terminations 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.
In fig. 22 as can be seen that BBU 2200 terminates request with start-stop process by being sent to telegon 2220, And terminate session and release RRH resources when the BBU 2200 determines that the session for terminating vRRH is configured.
Specifically, in step 2301, the BBU 2200 sends one and terminates request to telegon 2220.
In step 2303, the telegon 2220 sends to the SD-RRH controllers 2230 and terminates request.In this reality Apply in mode, the telegon 2220 sends C＆M orders by the resource allocation API 2231 of SD-RRH controllers 2230 The 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 one and provides to the virtual RRH managers 2233 Source releasing request discharges specific vRRH resources to inform virtual RRH managers 2233.The virtual RRH managers 2233 are according to institute State resource release request and vRRH resources are discharged from vRRH registration tablies 2210.
In step 2309, it is described that the RRH managers 2233 inform that the asset allocation service module 2332 has discharged VRRH resources.
In step 2311, the asset allocation service module 2332 discharges corresponding RRH pieces from RRH pieces collection 2240.
In step 2313, the result that RRH resources discharge is notified the coordination by the asset allocation service module 2332 Device 2220.
In the present invention, the SD-RRH controllers are by the physics RRH division of resources into multi-disc, and utilize one or many Individual SD-RRH pieces create the virtual RRH of software implementation.Wherein, each virtual RRH has different configurations to meet heterogeneous networks clothes The demand of business.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to above preferred embodiment pair The present invention has been described in detail, it will be understood by those within the art that, technical scheme can be carried out Modification or equivalent should not all depart from the spirit of technical solution of the present invention.

Claims (31)

1. the network structure in a kind of wireless communication system, it is characterised in that the network structure includes：
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 providing 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 bag Include：
Telegon, with the forward pass controller and at least, a cloud wireless access network (C-RAN) is connected respectively, for receiving State the radio resource request signal of at least C-RAN transmissions and the radio resource request signal of reception is converted into RRH controls Order；And
RRH controllers, are connected with the telegon, for splitting the RRH that the RRH is concentrated according to the RRH control commands Resource is creating virtual RRHs.
2. network structure as claimed in claim 1, it is characterised in that the telegon is created according to the radio resource request One wireless data processing figure, the RRH control commands are converted to by the wireless data processing figure, and the RRH is controlled to order Order is sent to RRH controllers.
3. network structure as claimed in claim 1, it is characterised in that the RRH controllers create a virtual RRHs and physics Mapping between RRHs, the setting of the configuration file of virtual RRHs is converted into the configuration configuration of physics RRHs, and according to being converted into Physics RRHs configuration configuration be applied to the physics RRHs.
4. network structure as claimed in claim 3, it is characterised in that configurations of the physics RRHs according to the physics RRHs Configuration setting RRH internal elements.
5. network structure as claimed in claim 1, it is characterised in that the segmentation RRH resources are included the RRH resources point Multiple RRH pieces are cut into, and the virtual RRHs is created according to multiple RRH pieces of segmentation.
6. network structure as claimed in claim 1, it is characterised in that the telegon is created according to the radio resource request One forward pass wireless data processing figure, a forward pass control command is converted into by the forward pass wireless data processing figure of the establishment, and will The forward pass control command is sent to forward pass controller.
7. network structure as claimed in claim 6, it is characterised in that the management forward pass resource includes the distribution forward pass money Source and multiple virtual forward pass are created according to the forward pass order.
8. network structure as claimed in claim 7, it is characterised in that the forward pass controller is by the virtual forward pass configuration text Part setting be changed into physics forward pass configuration file setting, and according to the configuration file of the physics forward pass setting configuration physics before Pass network equipment.
9. network structure as claimed in claim 1, it is characterised in that an at least C- according to the RRH controllers are received The connection request of RAN, performs the mapping that the connection request is set up between the virtual RRH and physics RRH.
10. network structure as claimed in claim 9, it is characterised in that the RRH controllers are according to the virtual RRH and thing Mapping configuration between reason RRH configures the physics RRHs.
11. network structures as claimed in claim 10, it is characterised in that the physics RRHs sends to the RRH controllers One return signal confirms payment received to inform the RRH controllers.
12. network structures as claimed in claim 11, it is characterised in that when the return signal is received, the RRH is controlled Connection result is replied to an at least C-RAN by device.
13. network structures as claimed in claim 12, it is characterised in that when the connection result is received, it is described at least Wireless data traffic described in one C-RAN settings between an at least C-RAN and the physics RRHs.
14. network structures as claimed in claim 13, it is characterised in that the wireless data traffic is tested by wireless streams identification Card.
Long distance wireless head (RRH) controller in a kind of 15. wireless communication systems, it is characterised in that the RRH includes：
An at least resource allocation application routine interface (resource allocation application program Interface, API), it is connected with a telegon, for providing the first setting to remote procedure call；
Control management (control and management, C＆M) application programming interfaces (API), are connected with a Base Band Unit, For providing the second setting to the remote procedure call；
Allocation device (resource allocation service, RAS), for create or discharge virtual long without The end of a thread (vRRH) resource；
Control management server, runs the resource allocation application routine interface.
Virtual long without the end of a thread (vRRH) manager, for providing a level of abstraction, follow the trail of and form one from least by the level of abstraction One virtual long is without mapping of the end of a thread to physical remote without the end of a thread；And
Control management protocol library, for providing control management protocol service for communication channel.
16. RRH controllers as claimed in claim 15, it is characterised in that the RRH controllers also include：
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；
RRH piece collection, is connected with the allocation device and virtual long without the end of a thread respectively, and the RRH pieces collection includes one group RRH pieces, each of which RRH pieces are corresponding without the end of a thread from different physical remotes, and every RRH pieces are assigned a corresponding knowledge Alias code；
Virtual long is connected without the end of a thread registration unit with the wireless head manager of the virtual long, and the virtual long is wireless Head includes the wireless top news mesh of an at least virtual long；
Explorer, is connected with the RRH information banks, the life cycle of the RRH equipment for managing registration；
Health monitor, the health status information for providing the RRH network hardwares；
Logger, the information of resource is generated for recording different daily records.
17. RRH controllers as claimed in claim 15, it is characterised in that the allocation device is managed to the vRRH Reason device sends the distribution information of the RRH pieces to create an at least vRRH and at least mapping of a pRRH.
18. RRH controllers as claimed in claim 15, it is characterised in that the resource allocation application routine interface receives institute A resource allocation request of telegon transmission is stated, and sends the resource allocation request to the allocation device.
19. RRH controllers as claimed in claim 18, it is characterised in that the allocation device distributes the RRH pieces The RHH pieces of concentration.
20. RRH controllers as claimed in claim 19, it is characterised in that the allocation device is according to the pRRH Resource informs vRRH managers to generate vRRH mappings.
21. RRH controllers as claimed in claim 20, it is characterised in that the vRRH managers are by accessing the vRRH Registration unit is distributed and creates vRRH.
22. RRH controllers as claimed in claim 21, it is characterised in that it is corresponding that the vRRH replys one to the telegon VRRH ID with indicate complete RRH resources configuration.
23. RRH controllers as claimed in claim 15, it is characterised in that the control pipe reason application programming interfaces receive one Control management request, respond the control management request carries out initialization configuration configuration by an at least vRRH, and will be described Control management request is sent to the control managing device.
24. RRH controllers as claimed in claim 15, it is characterised in that the control management server is managed from virtual RRH Device obtains vRRH map informations to obtain the information of at least one pRRH corresponding with the vRRH.
25. RRH controllers as claimed in claim 24, it is characterised in that the virtual RRH managers are managed to the control Server replys an at least pRRH information.
26. RRH controllers as claimed in claim 15, it is characterised in that the control management server accesses the control The agreement library facility is simultaneously called in management agreement storehouse, and be sent to for the control management request described by the control management protocol library RRH。
27. RRH controllers as claimed in claim 15, it is characterised in that the resource allocation application routine interface receives institute The termination request of telegon transmission is stated, and terminates asking transmission to give the allocation device by described.
28. RRH controllers as claimed in claim 27, it is characterised in that the allocation device is to the virtual RRH Manager sends a corresponding resource release request to notify that the virtual RRH managers discharge specific vRRH resources.
29. RRH controllers as claimed in claim 28, it is characterised in that the virtual RRH managers inform that the resource is matched somebody with somebody Put server and discharge the specific vRRH resources.
30. RRH controllers as claimed in claim 29, wherein allocation device release RRH pieces concentrate with it is described The corresponding RRH pieces of specific vRRH resources, and redistribute result to telegon transmission one.
31. a kind of long distance wireless heads (RRH), it is characterised in that the long distance wireless head includes：
Multiple communication interfaces, for realizing being transmitted between different types of data between the RRH and a Base Band Unit；
Communications module, is connected with the communication interface, and for controlling and managing data, the communications module includes:
Flow manager (RRH Flow Manager, RFM), the data for receiving Base Band Unit transmission；
Communication function module, for extracting user data and control management number in the data flow that is initialized from the Base Band Unit According to；
Module is calculated, for processing the baseband signal；
Radio processor, including：
RRH virtual-antennas port (virtual antenna port, RVA), for material antenna function to be divided into multiple days Line piece, and virtual-antenna port is created according to the antenna sheet of segmentation；And
Clock unit, for the Base Band Unit to be synchronized into treatment with the RRH；And control module, with the clock list Unit's connection, the control module includes：
RRH control function modules, communicate to connect with a RRH controllers；And
Resource module, the configuration information for characterizing the RHH.
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