CN106412726A - Method and apparatus for supporting communication between base stations in PON system - Google Patents
Method and apparatus for supporting communication between base stations in PON system Download PDFInfo
- Publication number
- CN106412726A CN106412726A CN201510451788.2A CN201510451788A CN106412726A CN 106412726 A CN106412726 A CN 106412726A CN 201510451788 A CN201510451788 A CN 201510451788A CN 106412726 A CN106412726 A CN 106412726A
- Authority
- CN
- China
- Prior art keywords
- pon
- onu
- base station
- frame
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Optical Communication System (AREA)
Abstract
The invention provides a method and apparatus for supporting direct communication between base stations in a PON system. An ONU receives inter-base station interactive data from an source base station associated therewith and to a target base station, encapsulates the inter-base station interactive data into an uplink PON data frame, marks ONU information associated with the target base station in a frame header and corresponding communication wavelength configuration, and then transmits the uplink PON data frame to an OLT; the OLT receives and resolves whether the frame header of the uplink PON data frame comprises the ONU information and the corresponding communication wavelength configuration information to determine whether the uplink PON data frame is the interactive data between wireless network base stations; and when determining the uplink PON data frame as the interactive data between the wireless network base stations, the OLT creates a downlink PON data frame according to the ONU information and the corresponding communication wavelength configuration information and transmits the downlink PON data frame to a target ONU in the PON system. The invention enables mutual communication of the eNBs based on a two-layer manner simultaneously among a plurality of different wavelength channels in the PON system based on a wavelength division multiplexing manner.
Description
Technical field
The present invention relates to communication technical field, support no in more particularly, to a kind of EPON (PON) system
The method and apparatus of line inter base station communication.
Background technology
LTE (Long Term Evolution) or E-UTRAN (the Universal Terrestrial Radio Access Network network of evolution) technology can show
Write high-lift system capacity and improve transfer rate it is considered to be main flow wireless technology scheme after 3G.Figure
1 gives the LTE network being defined by 3GPP forum total framework, and in this framework, LTE bearer network is main
Solve the problems, such as the carrying of S1 between wireless base station eNB and LTE EPC (MME/S-GW) and X2 interface,
S1 interface positioned between eNB and MME/SGW, SAE/LTE evolution system is divided into wireless access network and core
Heart net.Follow carrying and controlled detached thought, S1 interface has been also classified into user plane and control plane.Its
ENB and SGW is connected by middle user plane interface S1-U, for transmitting user data and corresponding user plane
Control frame.And eNB with MME is then connected by control plane interface S1-MME, mainly complete the wireless of S1 interface
The functions such as the Operation and Maintenance that access bearer controls, interface is special.Interconnected by X2 interface between eNB,
For supporting the direct transmission of data between e-NodeB and signaling.Mutually it is connected by X2 interface between eNB
Connect, define mesh network, because LTE is complete IP network, each eNB be counted as one have specific
The physical communications units of IP address, therefore, the service needed of X2 interface is entered by way of IP addressing at 3 layers
Walking along the street by and forward.
The wireless traffic increasing rapidly makes existing backhaul network tend to realize X2 interface connection based on dedicated link
Saturation, this makes to become inevitable choice using some form of optical fiber connection wireless base station eNB sooner or later.Compare
To connect base station in the point-to-point optical fiber laying special, using the point-to-multipoint structure of PON (EPON),
As shown in Fig. 2 which is cheaper on cost to realize wireless backhaul, remain PON originally simultaneously
The security of body, upgradability and the evolution facing the future, therefore obtain extensive concern.Additionally,
User resident business and wireless backhaul business can be carried using PON simultaneously, there is provided significantly concertedness,
Wireless and fixed network operator/service provider are brought with balance economically, is also advantageous for terminal use simultaneously.
Standardization body BBF (Broadband Forum) is writing technical draft, carrys out the wireless backhaul net based on PON for the specification
The framework of network and technical requirements.
With the increase to bandwidth demand for the user, it is of future generation based on the PON system of wave division multiplexing WDM
One of popular alternative of FTTx soft exchange technology, wherein, TWDM-PON is chosen as PON of future generation
(NG-PON2) preferred option, WDM-PON is chosen as the important supplement scheme of NG-PON2.With TWDM-PON
As a example system, it is formed by 4-8 XG-PON stacking, shares an optical distribution network ODN, its transmission capacity
40Gb/s-80Gb/s can be reached.Due to using shared ODN, construction cost CAPEX and operation cost OPEX
All substantially reduce.
When wireless backhaul business is carried using TWDM-PON, between eNB base station, pass through X2 interface
It is in communication with each other and not only can occur in single wavelength channel inside it is also possible to occur between multiple wavelength channels.
Due to the development of wireless Internet, the trend of a main flow is：The business of this equity and localization is all of
More and more important proportion is occupied, thus higher capacity and more low time delay are proposed to X2 interface among data throughput
Strict demand.Therefore, in TWDM-PON, how more efficiently to realize single wavelength channel internal and multiple
ENB between wavelength channel is in communication with each other, and is a major issue urgently to be resolved hurrily.
Fig. 3 gives between the single wavelength channel inside being currently based on TWDM-PON and multiple wavelength channel
The typical architecture of wireless backhaul, when OLT receives the IP packet of source eNB base station, it can only be by this data
Bag sends up to edge router ER.Then edge router ER passes through IP addressing, then by this packet
It is transmitted to target eNB.It means that the PON of access network system provides only physics for LTE business
Transmission medium, does not carry out the operations such as any route and process.Therefore, there is many deficiencies in the program：
(1) in this perpendicular network, the data communicating between all of eNB, is needed to have to pass through " PON
Access network->Core network->The transmitting procedure of PON access network ".During this insignificant upload and
Lower biography can cause than larger propagation delay time.
(2) all of data all must converge to core network, even if some packets only need in Cellular Networks
Internal migration.When this kind of local service gets more and more, it will bring serious signal transmission sum to core net
According to processing pressure.Meanwhile, substantial amounts of transfer resource is also wasted.
(3) control for the intercommunication business of eNB base station and management all route at core network edge
Carry out in device ER.Therefore cannot be according to the actual conditions of access network timely adjustresources allocation strategy.
Although IP bag forwarding capability can be transferred to OLT by the program, but in this case, OLT is necessary
Possess 3 layers of control function, although this method is directly, expensive.Additionally, 3 layers process than
2 layers of processing speed is a lot of slowly.
Content of the invention
The present invention is intended to provide the present invention is intended to provide a kind of PON based on wave division multiplex mode wireless
Efficiently it is in communication with each other scheme, 3 layers of eNB is in communication with each other and is mapped in PON by OLT between base station eNB
2 layers, forwarded between single wavelength channel inside and multiple wavelength channel by OLT, to realize more
Quick and inexpensive wireless base station eNB is in communication with each other.
According to an aspect of the present invention, provide a kind of light net in EPON (PON) system here
The method supporting direct communication between base stations in network unit (ONU), including：Receive the source being associated from ONU
Interaction data between the base station of base station, to be gone to target BS；Interaction data between described base station is encapsulated as up
PON Frame, and the ONU information that mark target BS is associated in the frame head of described up PON Frame
And correspond to communication wavelengths configuration；Described up PON Frame is sent to the optical line terminal of described PON system
(OLT).
Preferably, be provided with advance in described ONU ONU be associated base station and its association ONU information,
Mapping table between corresponding communication wavelengths configuration.
Preferably, described mapping table base station, the ONU of association or corresponding communication in described PON system
Upgrade in time when wavelength configuration changes.
Preferably, described mapping table changes including at least one in the following：ONU newly adds,
Exit or base station IP reassigns or corresponds to the change of communication wavelengths configuration.
Preferably, between described base station, interaction data is packaged into up PON by MPLS over XGEM mode
Frame.
Preferably, described PON is Wave division multiplexing passive optical network (WDM-PON) system or time-division wavelength-division
Stacking multiplexing passive optical network (TWDM-PON) system.PON can also be light orthogonal frequency division multiplexing passive
Optical-fiber network (OFDM-PON) system, it is right that aforementioned corresponding communication wavelengths are configured to the associated ONU institute of target BS
The sub-carrier configuration answered.
According to another aspect of the present invention, provide one kind here in EPON (PON) system
The method supporting direct communication between base stations in optical line terminal (OLT), including：Receive and be derived from EPON
The up PON Frame of unit (ONU)；Whether OLT passes through to parse the frame head of described up PON Frame
Comprise ONU information and corresponding communication wavelengths configuration information judges whether up PON Frame is nothing in PON system
Interaction data between line network base station；Interaction number between determining described up PON Frame for wireless network base station
According to OLT creates descending PON Frame according to ONU information and corresponding communication wavelengths configuration information；Under described
Row PON Frame is sent to target ONU in institute's PON system.
Preferably, when determine described up PON Frame frame head in do not comprise target ONU information and correspondence
During communication wavelengths configuration information, the payload of described up PON Frame is processed.
Preferably, aforementioned OLT is provided with the ONU of the associated wireless network base station of ONU and its association in advance
Mapping table between information, the configuration of corresponding communication wavelengths is simultaneously allocated to ONU when ONU starts.
Preferably, aforementioned OLT wireless network base station, ONU of association or corresponding in described PON system is logical
Letter wavelength configuration is when changing, and notifies ONU in PON system to upgrade in time described mapping table.
Preferably, aforementioned PON is Wave division multiplexing passive optical network (WDM-PON) system or time-division wavelength-division
Stacking multiplexing passive optical network (TWDM-PON) system；PON can also be light orthogonal frequency division multiplexing passive
Optical-fiber network (OFDM-PON) system, it is right that aforementioned corresponding communication wavelengths are configured to the associated ONU institute of target BS
The sub-carrier configuration answered.
According to another aspect of the present invention, provide one kind here in EPON (PON) system
The device of direct communication between base stations is supported in optical network unit (ONU), including：Receiving unit, it is configured
For receiving interaction data between the base station of source base station, the to be gone to target BS that ONU is associated；Process single
Unit, it is configured for interaction data between described base station to be encapsulated as up PON Frame, and in described up PON
ONU information and corresponding communication wavelengths configuration that in the frame head of Frame, mark target BS is associated；Send single
Unit, it is configured to described up PON Frame is sent to the optical line terminal (OLT) of described PON system.
Preferably, aforementioned means also include：Memory cell, it is configured to prestore described PON system
In wireless network base station and its ONU information of association, the configuration of corresponding communication wavelengths between mapping table.
Preferably, described mapping table in described PON system wireless network base station, association ONU or
Corresponding communication wavelengths configuration upgrades in time when changing.
Preferably, wherein processing unit between described base station interaction data by MPLS over XGEM mode quilt
It is packaged into up PON Frame.
Preferably, described PON is Wave division multiplexing passive optical network (WDM-PON) system or time-division wavelength-division
Stacking multiplexing passive optical network (TWDM-PON) system；PON can also be light orthogonal frequency division multiplexing passive
Optical-fiber network (OFDM-PON) system, it is right that aforementioned corresponding communication wavelengths are configured to the associated ONU institute of target BS
The sub-carrier configuration answered.
According to another aspect of the present invention, provide a kind of light in EPON (PON) system here
The device of direct communication between base stations is supported in line terminal (OLT), including：Receiving unit, it is configured to
Receive the up PON Frame from passive optical network unit (ONU)；Control unit, it is configured to solve
Whether the frame head analysing described up PON Frame comprises in ONU information and corresponding communication wavelengths configuration information judgement
Whether row PON Frame is interaction data between wireless network base station in PON system；Processing unit, it is configured
Be when determining that described up PON Frame is interaction data between wireless network base station, OLT according to ONU information and
Corresponding communication wavelengths configuration information creates descending PON Frame；Transmitting element, it is configured to will be described descending
PON Frame is sent to target ONU in described PON system.
Preferably, wherein said processing unit is additionally configured to when the frame head determining described up PON Frame
In when not comprising target ONU information and corresponding communication wavelengths configuration information, described up PON Frame is had
Effect load is processed.
Preferably, aforementioned means also include：Memory cell, it is configured to be configured with the nothing that ONU is associated
Mapping table between the ONU information of line network base station and its association, corresponding communication wavelengths configuration；Send single
Unit, configure when ONU starts described mapping table to PON system in ONU.
Preferably, described memory cell, when described mapping table changes, is notified by transmitting element
In PON system, ONU upgrades in time described mapping table.
The method being provided according to embodiments of the present invention and its device, can be in the user resident/move back to of mixing
Direct interaction between the base station of fast and low-cost is realized in biography network, in particular so that based on wave division multiplex mode
Carry out based on two layers of mode between multiple different wave length passages in TWDM-PON and WDM-PON system simultaneously
ENB is in communication with each other and is possibly realized, and greatly reduces communication delay, also mitigates growing for core net
Pressure.
Brief description
By the detailed description with the accompanying drawing being set forth below, the feature of the present invention, property and advantage will become more
Plus substantially, in accompanying drawing, identical element has identical mark, wherein：
The total framework of LTE network of Tu1Shi 3GPP forum definition；
Fig. 2 is the network architecture of the wireless backhaul based on PON；
Fig. 3 is the wireless backhaul between single wavelength channel inside and multiple wavelength channel based on TWDM-PON
Typical architecture；
Fig. 4 carries user resident business and wireless backhaul business for the TWDM-PON system that the present invention provides simultaneously
Network structure embodiment.
The frame head embodiment of the XGEM frame that Fig. 5 provides for the present invention；
The up XGTC burst frame embodiment that Fig. 6 provides for the present invention.
The single wavelength channel of the TWDM-PON system that Fig. 7 provides for the present invention is internal and multiple wavelength channels it
Between carry out process and the coordination system that X2 interface is in communication with each other.
Specific embodiment
In the specific descriptions of following preferred embodiment, will be attached appended by a present invention part with reference to constituting
Figure.Appended accompanying drawing has been illustrated by way of example and has been capable of specific embodiment.Example
Embodiment is not intended as all embodiments according to the present invention for the limit.Although it should be noted that herein with spy
The fixed step sequentially describing method in the present invention, but do not require that or imply must be according to this spy for this
Determine sequentially to execute these operations, or having to carry out all shown operation just enables desired result, phase
Instead, step described herein can change execution sequence.Additionally or alternatively, it is convenient to omit Mou Xiebu
Suddenly, multiple steps are merged into a step execution, and/or a step is decomposed into execution of multiple steps.
Fig. 4 carries user resident business and the net of wireless backhaul business for the TWDM-PON that the present invention provides simultaneously
Network framework, TWDM-PON system includes the OLT positioned at local side, and one or more ONU positioned at user side are (such as
ONU1, ONU2 ..., ONUn), and optical branching/combiner (SPL).Additionally, in figure also show
One or more wireless base station (in figure exemplary show source eNB, target eNB1 and target eNB2) and
The edge router (ER) of core network.Wherein, each wireless base station in wireless network and corresponding ONU
It is connected to support mobile retransmission.Edge router ER is connected with OLT, the control that eNB is in communication with each other by it and
Management function transfers to OLT, is directly forwarded the business of eNB base station intercommunication at 2 layers by OLT.
Taking the communication between source base station eNB and target BS eNB1, eNB2 as a example to describe between base station below
Directly X2 interface communication, source base station eNB is connected with ONU1, and target BS eNB1 is connected with ONU2, target
Base station eNB 2 is connected with ONU3.We can set up in TWDM-PON system OLT and safeguard an eNB with
ONU and respective wavelength passage mapping table, this relation table of reference table 1 will comprise：The body of wireless base station eNB
Part mark, for example：The IP address of eNB, with and its corresponding informance of ONU of being connected, for example：ONU-ID,
And the corresponding informance of corresponding wavelength channel, for example：WLCH-ID.
OLT can start, in ONU, the ONU unit in verification process being allocated to forgoing relationship table in system.
OLT can when described relation table corresponding relation changes, such as base station in system, the ONU of association,
Or correspondence communication wavelengths configuration changes and upgrades in time, TWDM-PON and WDM-PON is notified by transmitting element
In system, ONU upgrades in time described mapping table.Wherein, mapping table changes including the following
In at least one：ONU newly adds, exit or base station IP reassigns or corresponding communication wavelengths configuration
Change.
Table 1 eNB and ONU and respective wavelength passage mapping table
| ENB IP address | Associated ONU ID | Wavelength channel WLCH-ID |
| IP@eNB | 1 | a |
| IP@eNB2 | 2 | b |
| IP@eNB3 | 3 | c |
| …… | …… | …… |
In ONU1 associated by source base station eNB, it receives the IP number of the X2 interface from source base station eNB
According to bag, this IP packet can be based on MPLS form, and it includes MPLS label protocol stack and MPLS load
Part.The current PTN technology with T-MPLS/MPLS-TP as representative is more and more by global mobile operator
Business is favored with comprehensive operation, is primarily targeted for metropolitan area access/convergence-level, combines SDH, MPLS, Ethernet
Etc. the advantage of multiple technologies, the mobile service in comprehensive satisfaction difference evolution stage carries demand, with LTE number
According to the progressively development of business, and progressively by LTE service distributing to newly-built T-MPLS/MPLS-TP network.
Next, ONU1 by the IP packet bag of the X2 interface from source base station eNB in accordance with G.989.3 marking
" MPLS over XGEM " agreement in standard, is encapsulated in XGEM frame.According to aforementioned obtained relation table,
Due to the IP address of known target eNB1, target eNB2, its correspondence therefore can be inquired in relation table
The ONU-ID information of target ONU (ONU2 or ONU3) and respective wavelength channel information WLCH-ID.Knot
Close shown in Fig. 5, ONU1 is by the ONU-ID information of target ONU (ONU2 or ONU3) and respective wavelength passage
Information WLCH-ID identifies the frame head in this XGEM frame.The XGEM frame thus generating have with TWDM-PON in
The same structure of normal X GEM frame, only the frame head in XGEM frame domain " may be selected " and has done minor modifications.Therefore,
The up XGTC burst frame of ONU1 can combine as Fig. 6, and its XGTC loaded portion includes the TWDM-PON of routine
XGEM frame and for X2 interface XGEM frame be all combined in.
Afterwards, ONU1 is by the up PON Frame of the XGEM frame comprising for X2 interface being generated
It is sent to the OLT of described PON system.
In the local side OLT that legend 4 is illustrated, can be assisted by middle increase a port controller
Interaction between multiple OLT ports.
First, the up PON data from ONU is received by each OLT port, for example, the up PON of ONU1
Frame is received in OLT port 1.
Port controller is connected with the OLT port in TWDM-PON OLT so that multiple OLT port it
Between, i.e. interaction between multiple wavelength channels is possibly realized, and it is up from each OLT port that it passes through analysis
The frame head of XGEM Frame identifying the up XGEM frame that eNB is in communication with each other, without processing this XGEM
The load of frame.Specifically it relates to the XGEM Frame discriminatory analysis of X2 interface and descending PON
Data frame creation.Port controller can be one piece of logic chip, be physically present at the OLT of TWDM-PON
Inside, in legend, it includes judging unit and processing unit two parts：
Judging unit, whether the frame head that it parses described up PON Frame comprises ONU information and corresponds to logical
Letter wavelength configuration information, judges whether up PON Frame is wireless in TWDM-PON and WDM-PON system
Interaction data between network base station, for example：
A1) the target WLCH-ID domain if up XGEM frame and target ONU-ID domain are sky, then this XGEM
The load of frame is common PON communication data.The payload of this XGEM frame would be complying to the agreement of TWDM-PON
To process.
B1) the target WLCH-ID domain if up XGEM frame and target ONU-ID domain are not empty, then this
The load of XGEM frame is the data of the intercommunication of wireless base station eNB.
When up XGEM frame is confirmed as interaction data between wireless network base station, it is according to the ONU letter in frame head
Breath and corresponding communication wavelengths configuration information create descending PON Frame and directly generate descending XGEM frame, specifically：
A2) if the value of target WLCH-ID is consistent with the WLCH-ID of current place wavelength channel, process
The unit directly value according to target ONU-ID, generates descending XGEM frame and is sent to current place wavelength channel
OLT port, without the load processing this XGEM frame, as in legend between source eNB and target eNB1
Communication, its wavelength channel is all WLCH1.
B2) if the value of target WLCH-ID is inconsistent with the WLCH-ID of current place wavelength channel, locate
Reason unit, according to the value of target ONU-ID, after generating descending XGEM frame, sends it to corresponding wavelength passage
OLT port, again without the load processing this XGEM frame during this, such as in legend source eNB with
Communication between target eNB2, its wavelength channel is inconsistent, and processing unit will be used for X2 from port 1
The XGEM Frame of interface is transmitted to port 2.
OLT port is sent to target ONU, receiving terminal ONU by identify descending XGEM frame frame head come
Leach one's own XGEM frame, this process is identical with existing mode.
According to the present embodiment mode, the phase intercommunication based on layer 3 between the eNB that it will be carried out by X2 interface
Letter, be mapped to being in communication with each other based on layer 2 between ONU in TWDM-PON, simultaneously so that multiple difference ripples
Carry out eNB between long-channel simultaneously and be in communication with each other being possibly realized, when multiple source ONU-eNB adhere to different wavelength separately
During passage, can go up in respective wavelength channel respectively for the up XGEM frame that eNB is in communication with each other simultaneously
Pass to corresponding OLT port, thus greatly reduce time delay.
Enter between the internal and multiple wavelength channel of single wavelength channel of the TWDM-PON that Fig. 7 provides for the present invention
Process and the coordination system that row X2 interface is in communication with each other, are described in detail below：
Step S700, in the ONU of source, from eNB X2 interface IP bag in accordance with G.989.3 standard
" MPLS over XGEM " agreement, is encapsulated in XGEM frame.Due to the IP address of known target eNB, because
This can inquire target ONU information ONU-ID and corresponding target wavelength channel information in " relation table "
WLCH-ID.As shown in figure 5, it encapsulates target ONU-ID mark and target WLCH-ID in this XGEM frame
Frame head.
The new XGEM frame thus generating has the structure as normal X GEM frame in TWDM-PON, only exists
The frame head of XGEM frame " may be selected " domain and done minor modifications.Therefore, the up XGTC burst frame of ONU1 is permissible
As Fig. 6 combines, its XGTC loaded portion includes the XGEM frame of TWDM-PON of routine and for X2 interface
In XGEM frame is all combined in.
Step S710, when the OLT port of this upstream wavelength passage receives up XGTC burst frame, it is sent out
Give OLT port controller.
Step S720, OLT port controller can analyze the frame head of each XGEM frame one by one.If " target
WLCH-ID domain " is sky, then this frame is the XGEM frame of a normal TWDM-PON, and OLT port will be according to
G.989.3 standard processes the load of XGEM frame, and generates descending XGEM frame.Mesh if up XGEM frame
Mark WLCH-ID domain and target ONU-ID domain are not empty, then the load of this XGEM frame is between wireless base station eNB
The data being in communication with each other, will carry out step S730.
Step S730, when up XGEM frame is confirmed as interaction data between wireless network base station, it is according to frame head
In ONU information and corresponding communication wavelengths configuration information create descending PON Frame and directly generate descending XGEM
Frame.
Step 740a, if the value of target WLCH-ID is consistent with the WLCH-ID of current place wavelength channel,
Then the descending XGEM frame of generation is sent to the OLT port of current place wavelength channel by OLT port controller, and
Do not need to process the load of this XGEM frame, the communication between source eNB and target eNB1, its wavelength such as in legend
Passage is all a, and the XGEM Frame being used for X2 interface from port 1 is transmitted to former port by processing unit
1.
Step 740b, if the value of target WLCH-ID is inconsistent with the WLCH-ID of current place wavelength channel,
Then the descending XGEM frame generating is sent to the OLT port of corresponding wavelength passage by OLT port controller, this
During again without the load processing this XGEM frame, logical between source eNB and target eNB2 such as in legend
Letter, its wavelength channel is inconsistent, and the XGEM Frame being used for X2 interface from port 1 is turned by processing unit
Issue port 2.
Step 750a, 750b, in receiving terminal, ONU2 or ONU3 passes through to identify in descending XGEM frame frame head
" XGEM Port-ID ", to leach one's own XGEM frame.If what this XGEM frame carried is that X2 connects
The load of mouth, then it can after decapsulalion, and data will be sent to corresponding target eNB1 or eNB2.
What deserves to be explained is, when multiple source ONU-eNB adhere to different wavelength channels separately, each up eNB
Using its each self-corresponding upstream wavelength transmission, this can be by multi-wavelength by respectively for the XGEM frame being in communication with each other
TWDM-PON system is supported simultaneously.Therefore, it is possible to greatly improve the efficiency of the intercommunication of eNB.Simultaneously
The method that the present embodiment is proposed can also be applied to WDM-PON system and light orthogonal frequency division multiplexing passive light net
Network (OFDM-PON) system, WDM-PON system is the important supplement framework of NG-PON2；OFDM-PON system
Using Multicarrier Transmission Technology, the bit information of high speed serialization is dynamically assigning to the overlapped son of each frequency spectrum
On carrier wave, the spectrum efficiency of effective lift system.Subcarrier can adopt PSK (phase-shift keying (PSK) modulation), QAM
High order modulation such as (quadrature amplitude modulation) improves power system capacity, and therefore, corresponding communication wavelengths of the present invention are joined
Put to be the sub-carrier configuration corresponding to the ONU being associated for target BS.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention
Can realize by the mode of software plus necessary hardware platform naturally it is also possible to all be implemented by hardware,
But the former is more preferably embodiment in many cases.Based on such understanding, technical scheme is to the back of the body
What scape technology contributed can be embodied in whole or in part in the form of software product, this computer software
Product can be stored in storage medium, such as ROM/RAM, magnetic disc, CD etc., including some instructions in order to make
Obtain a computer equipment (can be personal computer, server, or network equipment etc.) and execute the present invention
Each embodiment or some partly described methods of embodiment.
Above example is only in order to illustrate technical scheme rather than to be limited, although reference is relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that：It is still
Technical scheme can be modified or equivalent, and these modifications or equivalent are also not
Amended technical scheme can be made to depart from the spirit and scope of technical solution of the present invention.
Claims (23)
1. one kind is supported between base station directly in the optical network unit (ONU) in EPON (PON) system
The method connecting letter, including：
Receive interaction data between the base station of source base station, to be gone to target BS that ONU is associated；
Interaction data between described base station is encapsulated as up PON Frame, and in described up PON Frame
Frame head in the ONU information that is associated of mark target BS and the configuration of corresponding communication wavelengths；
Described up PON Frame is sent to the optical line terminal (OLT) of described PON system.
2. the method for claim 1, is provided with the base that ONU is associated in advance in wherein said ONU
The ONU information stood and its associate, the mapping table corresponding between communication wavelengths configuration.
3. method as claimed in claim 2, wherein said mapping table in described PON system base station,
The ONU of association or corresponding upgrades in time when communication wavelengths configuration changes.
4. method as claimed in claim 3, wherein said mapping table changes including the following
In at least one：ONU newly adds, exit or base station IP reassigns or corresponding communication wavelengths configuration
Change.
5. the method for claim 1, between wherein said base station, interaction data passes through MPLS over XGEM
Mode is packaged into up PON Frame.
6. the method as described in claim 1 to 5 any claim is it is characterised in that described PON
It is Wave division multiplexing passive optical network (WDM-PON) system or time-division wavelength-division stacking multiplexing passive optical network
(TWDM-PON) system.
7. the method as described in claim 1 to 5 any claim is it is characterised in that described PON
For light orthogonal frequency division multiplexing passive optical network (OFDM-PON) system, described corresponding communication wavelengths are configured to target
The sub-carrier configuration corresponding to ONU that base station is associated.
8. one kind is supported between base station directly in the optical line terminal (OLT) in EPON (PON) system
The method connecting letter, including：
Receive the up PON Frame from passive optical network unit (ONU)；
Whether the frame head that OLT passes through to parse described up PON Frame comprises ONU information and corresponding communication wavelengths
Configuration information judges that whether up PON Frame is interaction data between wireless network base station in PON system；
When determining that described up PON Frame is interaction data between wireless network base station, OLT is according to ONU information
And correspond to the communication wavelengths configuration information descending PON Frame of establishment；
Described descending PON Frame is sent to target ONU in institute's PON system.
9. method as claimed in claim 8, also includes：
When not comprising target ONU information and corresponding communication wavelengths in the frame head determining described up PON Frame
During configuration information, the payload of described up PON Frame is processed.
10. method as claimed in claim 8, wherein said OLT is provided with the nothing that ONU is associated in advance
Mapping table between the ONU information of line network base station and its association, the configuration of corresponding communication wavelengths in ONU
It is allocated to ONU during startup.
11. methods as claimed in claim 8, wherein said OLT wireless network in described PON system
When base station, the ONU of association or corresponding communication wavelengths configuration change, notify ONU in PON system timely
Update described mapping table.
12. methods as described in any one of claim 8 to 11 are it is characterised in that described PON is ripple
Division multiplexing passive optical network network (WDM-PON) system or time-division wavelength-division stacking multiplexing passive optical network (TWDM-PON)
System.
13. methods as described in any one of claim 8 to 11 are it is characterised in that described PON is light
Orthogonal frequency division multiplexing passive optical network (OFDM-PON) system, described corresponding communication wavelengths are configured to target BS
Sub-carrier configuration corresponding to associated ONU.
14. one kind are supported between base station in the optical network unit (ONU) in EPON (PON) system
The device of direction communication, including：
Receiving unit, it is configured to receive source base station, the to be gone to target BS being associated from ONU
Base station between interaction data；
Processing unit, it is configured for interaction data between described base station to be encapsulated as up PON Frame, and
The ONU information that in the frame head of described up PON Frame, mark target BS is associated and corresponding communication wavelengths are joined
Put；
Transmitting element, it is configured to described up PON Frame is sent to the light of described PON system
Road terminal (OLT).
15. devices as claimed in claim 14, wherein said device also includes：
Memory cell, it is configured to prestore the wireless network base station in described PON system and its association
ONU information, the mapping table between the configuration of corresponding communication wavelengths.
16. devices as claimed in claim 14, wherein said mapping table nothing in described PON system
Line network base station, the ONU of association or corresponding upgrade in time when communication wavelengths configuration changes.
17. devices as claimed in claim 14, wherein processing unit interaction data between described base station passes through
MPLS over XGEM mode is packaged into up PON Frame.
Device as described in 18. claims as arbitrary in claim 14 to 17 is it is characterised in that described PON is
Wave division multiplexing passive optical network (WDM-PON) system or time-division wavelength-division stacking multiplexing passive optical network (TWDM-PON)
System.
Device as described in 19. claims as arbitrary in claim 14 to 17 is it is characterised in that described PON
For light orthogonal frequency division multiplexing passive optical network (OFDM-PON) system, described corresponding communication wavelengths are configured to target
The sub-carrier configuration corresponding to ONU that base station is associated.
20. one kind are supported straight between base station in optical line terminal (OLT) in EPON (PON) system
Connect the device of letter, including：
Receiving unit, it is configured to receive the up PON Frame from passive optical network unit (ONU)；
Control unit, it is configured to parse whether the frame head of described up PON Frame comprises ONU information
And corresponding communication wavelengths configuration information judges that whether up PON Frame is in PON system between wireless network base station
Interaction data；
Processing unit, it is configured as determining that described up PON Frame is interaction between wireless network base station
Data, OLT creates descending PON Frame according to ONU information and corresponding communication wavelengths configuration information；
Transmitting element, it is configured to for described descending PON Frame to be sent to the mesh in described PON system
Mark ONU.
21. devices as claimed in claim 20, wherein said processing unit is additionally configured to described when determining
When not comprising target ONU information and corresponding communication wavelengths configuration information in the frame head of up PON Frame, to institute
The payload stating up PON Frame is processed.
22. devices as claimed in claim 20, wherein said device also includes：
Memory cell, it is configured to be configured with the ONU of the associated wireless network base station of ONU and its association
Mapping table between information, corresponding communication wavelengths configuration；
Transmitting element, configure when ONU starts described mapping table to PON system in ONU.
23. devices as claimed in claim 20, wherein said memory cell occurs in described mapping table
During change, ONU in PON system is notified to upgrade in time described mapping table by transmitting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510451788.2A CN106412726B (en) | 2015-07-28 | 2015-07-28 | Method and device for supporting communication between base stations in PON system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510451788.2A CN106412726B (en) | 2015-07-28 | 2015-07-28 | Method and device for supporting communication between base stations in PON system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106412726A true CN106412726A (en) | 2017-02-15 |
| CN106412726B CN106412726B (en) | 2020-12-11 |
Family
ID=58009073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510451788.2A Active CN106412726B (en) | 2015-07-28 | 2015-07-28 | Method and device for supporting communication between base stations in PON system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106412726B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113973239A (en) * | 2020-07-24 | 2022-01-25 | 上海诺基亚贝尔股份有限公司 | Method, apparatus, optical network unit, optical line terminal and medium for communication |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179428A (en) * | 2007-09-28 | 2008-05-14 | 西安大唐电信有限公司 | Method of managing multi-logical link ID optical network unit in Ethernet passive optical network |
| CN202004922U (en) * | 2011-03-21 | 2011-10-05 | 胡朝昱 | Passive optical network system on wavelength division multiplexing |
| CN102685611A (en) * | 2011-01-10 | 2012-09-19 | 株式会社Ntt都科摩 | Communication system and method for directly transmitting signals between nodes of communication system |
| CN102843207A (en) * | 2011-06-21 | 2012-12-26 | 瑞典爱立信有限公司 | Wavelength division multiplexed passive optical network apparatus and method of configuration |
| EP2621120A1 (en) * | 2012-01-30 | 2013-07-31 | NTT DoCoMo, Inc. | Communication system, node and method for transmitting a signal from a transmitting node to a plurality of receiving nodes |
| CN103583010A (en) * | 2011-06-20 | 2014-02-12 | 株式会社Ntt都科摩 | Communication system and method for transmitting data to one or more groups of nodes in a communication system |
| CN103650422A (en) * | 2012-07-13 | 2014-03-19 | 华为技术有限公司 | Wavelength negotiation method, system, and device for multi-wavelength passive optical network |
| CN103905111A (en) * | 2012-12-28 | 2014-07-02 | 深圳市华为安捷信电气有限公司 | Optical link detection method, optical link detection device and optical link detection system |
| CN104469562A (en) * | 2013-09-18 | 2015-03-25 | 上海贝尔股份有限公司 | ONU supporting inter-ONU interaction and remote node supporting inter-ONU interaction |
| CN104581446A (en) * | 2013-10-14 | 2015-04-29 | 上海贝尔股份有限公司 | Method and device for supporting direct communication among base stations in PON system |
-
2015
- 2015-07-28 CN CN201510451788.2A patent/CN106412726B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179428A (en) * | 2007-09-28 | 2008-05-14 | 西安大唐电信有限公司 | Method of managing multi-logical link ID optical network unit in Ethernet passive optical network |
| CN102685611A (en) * | 2011-01-10 | 2012-09-19 | 株式会社Ntt都科摩 | Communication system and method for directly transmitting signals between nodes of communication system |
| CN202004922U (en) * | 2011-03-21 | 2011-10-05 | 胡朝昱 | Passive optical network system on wavelength division multiplexing |
| CN103583010A (en) * | 2011-06-20 | 2014-02-12 | 株式会社Ntt都科摩 | Communication system and method for transmitting data to one or more groups of nodes in a communication system |
| CN102843207A (en) * | 2011-06-21 | 2012-12-26 | 瑞典爱立信有限公司 | Wavelength division multiplexed passive optical network apparatus and method of configuration |
| EP2621120A1 (en) * | 2012-01-30 | 2013-07-31 | NTT DoCoMo, Inc. | Communication system, node and method for transmitting a signal from a transmitting node to a plurality of receiving nodes |
| CN103650422A (en) * | 2012-07-13 | 2014-03-19 | 华为技术有限公司 | Wavelength negotiation method, system, and device for multi-wavelength passive optical network |
| CN103905111A (en) * | 2012-12-28 | 2014-07-02 | 深圳市华为安捷信电气有限公司 | Optical link detection method, optical link detection device and optical link detection system |
| CN104469562A (en) * | 2013-09-18 | 2015-03-25 | 上海贝尔股份有限公司 | ONU supporting inter-ONU interaction and remote node supporting inter-ONU interaction |
| CN104581446A (en) * | 2013-10-14 | 2015-04-29 | 上海贝尔股份有限公司 | Method and device for supporting direct communication among base stations in PON system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113973239A (en) * | 2020-07-24 | 2022-01-25 | 上海诺基亚贝尔股份有限公司 | Method, apparatus, optical network unit, optical line terminal and medium for communication |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106412726B (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101931548B (en) | Method, apparatus and system for label management of access network | |
| Kani et al. | Solutions for future mobile fronthaul and access-network convergence | |
| Wey et al. | Passive optical networks for 5G transport: technology and standards | |
| Alimi et al. | Toward an efficient C-RAN optical fronthaul for the future networks: A tutorial on technologies, requirements, challenges, and solutions | |
| Beyranvand et al. | Toward 5G: FiWi enhanced LTE-A HetNets with reliable low-latency fiber backhaul sharing and WiFi offloading | |
| US10050711B2 (en) | Optical transport network | |
| Ranaweera et al. | Next generation optical-wireless converged network architectures | |
| Wey et al. | 5G wireless transport in a PON context: An overview | |
| WO2018113797A1 (en) | Front-haul transport network, data transmission method, apparatus and computer storage medium | |
| US9692514B2 (en) | Network node and a method therein enabling a first unit to connect or to be connected ad-hoc to a second unit | |
| EP2966830B1 (en) | Method, apparatus and system for interacting information in access network | |
| US8467683B2 (en) | Mapping method, apparatus, and system for data transmission | |
| CN104581446B (en) | The method and apparatus that direct communication between base stations are supported in PON system | |
| CN106888513B (en) | Forward pass network and data transmission method | |
| KR20150088626A (en) | Software defined networking method | |
| Kuwano et al. | Operator perspective on next-generation optical access for future radio access | |
| WO2017049460A1 (en) | Optical network unit registration method, device and system | |
| CN106031064A (en) | Communication method, apparatus and system applied to multi-wavelength passive optical network | |
| CN106302166B (en) | Data transmission method and device | |
| US20190342889A1 (en) | Method and device for data transmission of front-haul transport network, and computer storage medium | |
| Alimi et al. | Enabling optical wired and wireless technologies for 5G and beyond networks | |
| Maksymyuk et al. | Study and development of next-generation optical networks | |
| US11036871B2 (en) | PON system, wireless network system, data transfer method, OLT, and ONU | |
| Xu et al. | OpenFlow Protocol Extension in SDN-based Satellite Networks. | |
| CN106412726A (en) | Method and apparatus for supporting communication between base stations in PON system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 201206 Pudong New Area Jinqiao Export Processing Zone, Nanjing Road, No. 388, Shanghai Applicant after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong New Area Jinqiao Export Processing Zone, Nanjing Road, No. 388, Shanghai Applicant before: Shanghai Alcatel-Lucent Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |