CN104935422B - A kind of method and system that common mode LTE base station is realized based on single mode LTE - Google Patents

A kind of method and system that common mode LTE base station is realized based on single mode LTE Download PDF

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Publication number
CN104935422B
CN104935422B CN201510329253.8A CN201510329253A CN104935422B CN 104935422 B CN104935422 B CN 104935422B CN 201510329253 A CN201510329253 A CN 201510329253A CN 104935422 B CN104935422 B CN 104935422B
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base station
lte
tdd
function
fdd
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CN104935422A (en
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王贻先
程运
乐诚
余刚
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Wuhan Research Institute of Posts and Telecommunications Co Ltd
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Wuhan Research Institute of Posts and Telecommunications Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Abstract

A kind of method and system that common mode LTE base station is realized based on single mode LTE, on the basis of using existing LTE technologies and product, a base station level functional module is taken out on CCU, for handling FDD/TDD base stations level function, OAM and GTPU also does same treatment simultaneously, and increase adaptation processing in cell-level function, to solve compatibility issue.LMT follows base station level table fusion, the principle of cell-level table independence, by parameter configuration table according to base station level function, cell-level function classification.BPU (FDD+TDD) maintains existing hardware and Software for Design, connects corresponding FDD/TDD RRU and realizes Base-Band Processing function.The present invention utilizes prior art and product, realizes LTE common mode base station functions, the difficulty of existing LTE common modes technology, and corresponding cost is greatly reduced.

Description

A kind of method and system that common mode LTE base station is realized based on single mode LTE
Technical field
The invention belongs to the communications field, is related to one kind and realizes common mode based on single mode LTE（FDD+TDD）The method of LTE base station And system.
Background technology
LTE points are FDD, TDD both of which, and TDD is the 4th generation communication system of China's independent research, is had at home larger The market demand, FDD is the communication system that American-European more country uses.Both of which is each advantageous in terms of covering with capacity, FDD can expand up coverage, and TDD frequency ranges can increase downlink capacity, and FDD/TDD common modes enable an operator to economically TDD is disposed, is formed and had complementary advantages with FDD networks, reduced TDD covering cost, ensure that effective utilization of frequency spectrum, improve FDD/TDD overlay area and network capacity.Just because of this so that the demand of FDD/TDD common mode networkings is major than stronger Operator also dishes out such demand one after another.
Existing LTE common modes method is all to use unified shader, the design method of depth integration, the depth on CCU and BPU Compatible FDD and TDD functions, but existing method can cause some problems：Compare first, being implemented on software and on hardware Complexity, the manpower and cost of input are higher；Second, for existing ripe single mode FDD or TDD products company, redevelop TDD/ During FDD common mode products, it is impossible to make full use of existing technological achievement；Third, maintenance cost is higher.
The content of the invention
The present invention reduces technical difficulty to reduce development cost, there is provided one kind realizes common mode LTE bases based on single mode LTE The method and system stood.
Technical scheme provides a kind of method that common mode LTE base station is realized based on single mode LTE, by CCU（In Entreat control unit）FDD/TDD fusions are carried out, to realize LTE common modes, two BPU（Baseband processing unit）Respectively before use Single mode FDD and single mode TDD products（Including software, hardware）.This common mode method comprises the steps of：
Step 1, held in OAM (operation management maintainance), undertake FDD/TDD phase respectively using the existing designs of single mode LTE Function is closed, incompatible place takes out an adaptation module to solve compatibling problem；The LMT being used cooperatively with OAM（Local dimension Protect terminal）And by parameter configuration and management function, merged according to base station level function, the principle of cell-level functional independence, again Design configurations list item.
Step 2, by base station level functional module on CCU（ENB COMMON）Merged, do not distinguish FDD/TDD individually, Each cell-level function keeps original design, an adaptation module is taken out, for being adapted to incompatible in FDD/TDD designs ask Topic.The function of base station level module (ENB COMMON) includes：1st, S1 link managements；2nd, X2 link managements；3rd, non-UE levels S1 signalings Reception processing；4th, non-UE levels X2 signaling reception processings；5th, the non-encapsulation of UE levels S1 signalings and transmission；6th, the encapsulation of non-UE levels X2 signalings and Send；7th, UE levels access the processing of first signaling, including be initially accessed, S1 switch into X2 switch into；8th, all UE ID moneys Source control and maintenance；9th, the neighboring BS relationship management of all cells；10th, the data configuration processing of all functions being related to.
Step 3, GTPU (user plane GPRS Tunnel Protocol) are equally abstracted a base station level functional module, and right respectively The function of FDD/TDD cells does adaptation processing, to solve FDD/TDD LTE compatibling problems.
This method uses existing technological achievements to the full extent, remains existing single mode LTE functions to the full extent, reduces Realize the technical difficulty of common mode, and then reduce development amount.
A kind of LTE common mode systems for realizing the above method, are merged by CCU, using two sets of existing single mode LTE BPU, structure Into a common mode LTE system.It includes CCU（Central control unit）And BPU（Baseband processing unit）, RRU（Radio frequency unit）With And machine frame.CCU contains hardware board, the CPU processor for runs software program, and provides the communication such as serial ports, network interface Interface.Wherein CPU processor is used to realize base station upper-layer protocol, data link and maintenance management function；Upper-layer protocol is main Refer to L3 (RRC/S1AP/X2AP) agreement, while also realize function including inside of base station；Data link is mainly the control of data surface Signaling and flow processed；
Maintenance management is mainly OAM (operation management maintainance) correlation function, realizes the maintenance and management to base station, Yi Jiti For customer account management function, including LMT (LMT Local Maintenance Terminal) and OMC (operational administrative center).
BPU contains hardware board, the CPU processor for running protocol layer L2 (MAC/RLC/PDCP), FPGA, DSP Deng device, and provide the communication interfaces such as X2, serial ports, network interface, optical port.Wherein CPU processor is used to realize L2 phases in LTE protocol Close function, the protocol contents such as including MAC/RLC/PDCP, and inside of base station and realize function；FPGA is used to realize at downstream message Reason, and DSP message headers are handled in upstream message；DSP is used for the processing for realizing upstream message；
BPU is linked together by optical port with RRU, and uplink and downlink signals are communicated by this interface with RRU.RRU is used for Radio frequency correlation function is realized, includes reception and the transmission processing of signal.
Existing common mode LTE design methods are contrasted, the present invention integrates FDD by carrying out CCU software architecture fusions on CCU With TDD single mode LTE functions, base station level function is merged（Including L3, GTPU, OAM）, it is constant that BPU retains original design （Software and hardware）, whole system only need CCU fusion on carry out software development.And existing common mode method needs to CCU and BPU carries out depth integration, needs to realize FDD and TDD LTE functions simultaneously on BPU, needs to carry out software and hardware in exploitation Extensive change design, workload and difficulty are very big.The present invention at utmost utilizes existing single mode LTE products and technology, Common mode LTE base station development difficulty and cost can be greatly reduced.
Brief description of the drawings
Fig. 1 is the method Organization Chart of the present invention；
Fig. 2 is the system construction drawing of LTE common modes base station；
Fig. 3 is LTE common mode BTS hardware structure charts.
Embodiment
Technical scheme provides a kind of LTE common modes method, illustrates referring to Fig. 1, this common mode method is to CCU（In Entreat control unit）FDD/TDD fusions are carried out, to realize LTE common modes, BPU（Baseband processing unit）Existing single mode is used respectively FDD/TDD products（Including software, hardware）.This common mode method comprises the steps of：
Step 1, held in OAM (operation management maintainance), undertake FDD/TDD phase respectively using the existing designs of single mode LTE Function is closed, incompatible place is abstracted an adaptation module to solve compatibling problem.The LMT being used cooperatively with OAM（Local maintenance Terminal）And by some parameter configurations and management function, merged according to base station level function, the principle of cell-level functional independence, weight New design configurations list item.
Step 2, base station level function is merged on CCU, do not distinguish FDD/TDD individually, each cell-level function is protected Original design is held, takes out an adaptation module, for being adapted to the problem of incompatible in FDD/TDD designs.Base station level module The function of (ENB COMMON) includes：1st, S1 link managements；2nd, X2 link managements；3rd, non-UE levels S1 signaling reception processings；4th, it is non- UE level X2 signaling reception processings；5th, the non-encapsulation of UE levels S1 signalings and transmission；6th, the non-encapsulation of UE levels X2 signalings and transmission；7th, UE levels connect Enter the processing of first signaling, including be initially accessed, S1 switch into X2 switch into；8th, all UE ID resource managements and maintenance； 9th, the neighboring BS relationship management of all cells；10th, the data configuration processing of all functions being related to.
Step 3, GTPU (user plane GPRS Tunnel Protocol) are equally abstracted a base station level functional module, and right respectively The function of FDD/TDD cells does adaptation processing, to solve FDD/TDD LTE compatibling problems.The method is to the full extent using existing There is technological achievement, remain existing single mode LTE functions to the full extent, reduce the technical difficulty for realizing common mode, and then reduce Development amount.
A kind of LTE common mode systems for realizing the above method, referring to figs. 2 and 3, this common mode LTE devices are merged by CCU, Using 2 sets of original single mode LTE BPU, a common mode LTE system is formed.It includes CCU（Central control unit）And BPU（Base band Processing unit）, RRU（Radio frequency unit）And machine frame.CCU contains hardware board, the CPU processing for runs software program Device, and the communication interfaces such as serial ports, network interface are provided.Wherein CPU processor be used for realize base station upper-layer protocol, data link, with And maintenance management function；Upper-layer protocol is primarily referred to as L3 (RRC/S1AP/X2AP) agreement, while also realizes work(including inside of base station Energy；Data link is mainly the control signaling and flow of data surface；
Maintenance management is mainly OAM (operation management maintainance) correlation function, realizes the maintenance and management to base station, Yi Jiti For customer account management function, including LMT (LMT Local Maintenance Terminal) and OMC (operational administrative center).
BPU contains hardware board, the CPU processor for running protocol layer L2 (MAC/RLC/PDCP), FPGA, DSP Deng device, and provide the communication interfaces such as X2, serial ports, network interface, optical port.Wherein CPU processor is used to realize L2 phases in LTE protocol Close function, the protocol contents such as including MAC/RLC/PDCP, and inside of base station and realize function；FPGA is used to realize at downstream message Reason, and DSP message headers are handled in upstream message；DSP is used for the processing for realizing upstream message；
BPU is linked together by optical port with RRU, and uplink and downlink signals are communicated by this interface with RRU.RRU is used for Radio frequency correlation function is realized, includes reception and the transmission processing of signal.
Referring to Fig. 2 and Fig. 3, LTE common modes base station is by a machine frame（Including CCU and BPU boards）, and RRU, radio frequency Antenna etc. forms.Machine frame provides the functions such as power supply supply, radiating, and forms a containment vessel.CCU and BPU are in the form of board It can be inserted on machine frame specified slot position, CCU can only be on the groove position of the top, and BPU can be arbitrarily on following 3 groove positions. This machine frame and CCU, BPU board are all to have completed product using existing, without design in addition, prior art can be made full use of to accumulate It is tired.S1 interfaces are provided on CCU, can be with MME connections by this interface, also serial ports, network interface etc. are available for debugging and sheet in addition The communication interfaces such as ground maintenance.The upper softwares of CCU need accordingly to be changed for LTE common modes, are abstracted an ENB COMMON module Handle base station level function（Specific implementation can be found in above-mentioned common mode method）, and between FDD/TDD cell-level function adaptation； OAM function is equally also required to do corresponding change, is abstracted a base station level functional module, cell-level function is done at adaptation Reason, and parameter configuration table is merged according to base station level parameter list, the principle of cell-level table independence is configured.GTPU is equally such as This.BPU (FDD+TDD) uses existing product, maintains existing hardware and Software for Design constant, X2 interface is provided on BPU, passes through this Interface realizes the interconnection between different base station, the same with CCU in addition, while provides the debugging such as serial ports, network interface and safeguard that what is used connects Mouthful.BPU is upper also to provide optical port in addition, by critical point, is communicated using optical fiber between RRU, RRU is responsible for connecing for idle message Receive and send, RRU is also required to coordinate corresponding antenna to use simultaneously, to improve gain of the signal when sending and receiving.

Claims (3)

  1. A kind of 1. method that common mode LTE base station is realized based on single mode LTE, it is characterised in that：By entering to central control unit CCU Row FDD/TDD is merged to realize LTE common modes, and baseband processing unit BPU uses single mode FDD/TDD products；Specifically include following step Suddenly：
    Step 1, at operation management maintainance OAM ends, undertake FDD/TDD function, incompatible place respectively using single mode LTE An adaptation module is set to solve compatibling problem；With the LMT Local Maintenance Terminal LMT that OAM is used cooperatively by parameter configuration and management Function, according to the fusion of base station level function, the principle of cell-level functional independence, redesign configuration list item；
    Step 2, base station level functional module is merged on CCU, do not distinguish FDD/TDD individually, each cell-level function is protected Original design is held, an adaptation module is set out, for being adapted to the problem of incompatible in FDD/TDD designs；
    Step 3, user plane GPRS Tunnel Protocol GTPU equally set a base station level functional module, and small to FDD/TDD respectively The function in area does adaptation processing, to solve FDD/TDD LTE compatibling problems.
  2. A kind of 2. method that common mode LTE base station is realized based on single mode LTE according to claim 1, it is characterised in that：It is described Base station level Implement of Function Module：
    S1 link managements；X2 link managements；Non- UE levels S1 signaling reception processings；Non- UE levels X2 signaling reception processings；Non- UE levels S1 Signaling is encapsulated and sent；The non-encapsulation of UE levels X2 signalings and transmission；UE levels access first signaling processing, including are initially accessed, S1 Switch into X2 switch into；All UE ID resource managements and maintenance；The neighboring BS relationship management of all cells；Base station level function Data configuration processing.
  3. A kind of 3. system that common mode LTE base station is realized based on single mode LTE, it is characterised in that：Merged by CCU, it is single using two sets Mould LTE BPU, form a common mode LTE system；
    Including central control unit CCU, baseband processing unit BPU, radio frequency unit RRU and machine frame；
    CCU contains hardware board, the CPU processor for runs software program, and provides S1, serial ports, network interface and communicate and connect Mouthful；Wherein CPU processor is used to realize base station upper-layer protocol, data link and maintenance management function；Upper-layer protocol includes L3 Agreement and inside of base station realize function；Data link includes the control signaling and flow of data surface；Maintenance management includes operation Management service OAM(Operation Administration Maintenance), the maintenance and management to base station is realized, and customer account management function is provided, customer account management includes local Maintenance terminal LMT and operational administrative center OMC；
    BPU includes hardware board, the CPU processor for running protocol layer L2, FPGA, DSP, and provides X2, serial ports, net Mouth, optical port communication interface；Wherein CPU processor is used to realize L2 correlation functions in LTE protocol, including MAC/RLC/PDCP agreements Content, and inside of base station realize function；FPGA is used to realize that downstream message is handled, and in upstream message at DSP message headers Reason；DSP is used for the processing for realizing upstream message；
    BPU is linked together by optical port with RRU, and uplink and downlink signals are communicated by this interface with RRU, and RRU is used to realize Radio-frequency enabled, include reception and the transmission processing of signal.
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CN109857407B (en) * 2018-10-24 2022-04-19 京信网络系统股份有限公司 Deployment method, device, storage medium and equipment of base station upper layer software
CN110913508B (en) * 2019-11-25 2021-07-20 广州爱浦路网络技术有限公司 Data message processing method of UPF-deployed 5G base station

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CN101790256A (en) * 2009-01-22 2010-07-28 中兴通讯股份有限公司 Signal receiving machine, signal sending machine and signal processing method
CN102118795A (en) * 2009-12-31 2011-07-06 华为技术有限公司 Base station and method for transmitting common public radio interface data in base station
CN102422680A (en) * 2009-05-13 2012-04-18 高通股份有限公司 Provisioning single-mode and multimode system selection parameters and service management

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN101790256A (en) * 2009-01-22 2010-07-28 中兴通讯股份有限公司 Signal receiving machine, signal sending machine and signal processing method
CN102422680A (en) * 2009-05-13 2012-04-18 高通股份有限公司 Provisioning single-mode and multimode system selection parameters and service management
CN102118795A (en) * 2009-12-31 2011-07-06 华为技术有限公司 Base station and method for transmitting common public radio interface data in base station

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