CN102111693B - optical signal transmission method and optical network unit - Google Patents
optical signal transmission method and optical network unit Download PDFInfo
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Abstract
The invention discloses a kind of optical signal transmission method and optical network unit, the method comprises: ONU determines its bandwidth resources state; The first tunable optical transceiver module that ONU is arranged thereon according to bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wherein, first tunable optical transceiver module is set to system configuration wavelength, and the second tunable optical transceiver module is set to predetermined wavelength.By the present invention, improve efficiency and the performance of optical signal transmission.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of optical signal transmission method and optical network unit (OpticalNetwork Unit, referred to as ONU).
Background technology
EPON (Passive Optical Network, referred to as PON) is a kind of mainstream technology of current FTTX scheme a series of soft exchange technology such as (refer to fiber to the home, Fiber-To-The-Building) Fiber To The Curb.Current EPON is mainly based on time-multiplexed EPON (Time Division Multiplexing-Passive Optical Network, referred to as TDM-PON).In TDM-PON, up-downgoing all adopts single wavelength, very low to the utilance of wavelength bandwidth.Along with people's improving constantly for bandwidth demand, this TDM-PON Access Network form based on single wavelength inevitably will run into bottleneck.
Wave division multiplexing passive optical network (Wavelength Division Multiplexing-Passive Optical Network, referred to as WDM-PON) be a kind of novel passive optical network system based on the transmission of multi-wavelength single fiber be recently suggested, the operation principle of this network is: each terminal use takies separately a wavelength channel, and multiple wavelength channel is transmitted in same trunk fiber by the mode of wavelength division multiplexing.Be characterized in that each terminal use exclusively enjoys a wavelength bandwidth resource.This not only makes the bandwidth being supplied to individual consumer greatly improve, and takes full advantage of the wavelength bandwidth resource of optical fiber, has greatly expanded the total bandwidth of EPON.
In the WDM-PON system of correlation technique, each user is distributed to the bandwidth resources of a wavelength individually, Fig. 1 is the WDM-PON operation principle schematic diagram according to correlation technique, as shown in Figure 1, each user exclusively enjoys a pair up-downgoing wavelength, and the bandwidth that each user can support is equal and fixing.An optical network unit (Optical Network Unit, referred to as ONU) and the optical module one_to_one corresponding that works in optical line terminal (Optical Line Terminal, referred to as OLT).At down direction, N number of optical module in OLT sends wavelength and is respectively D1, D2, ... the N road downlink optical signal of Dn, by wavelength division multiplexing (Wavelength Division Multiplexing, referred to as WDM) close ripple after through trunk fiber, all given each ONU again after optical branching device, each ONU receives the downlink optical signal of respective wavelength by inner tunable optical transceiver module.At up direction, each ONU is respectively U1, U2 by inner tunable optical transceiver module emission wavelength ... the N road uplink optical signal of Un.After optical branching device converges, send in trunk fiber and transmit, after arriving OLT, by WDM wavelength (de) multiplexing, send into N number of corresponding optical module and receive.
Although optical signal transmission method can ensure the high unshared bandwidth of each user in correlation technique, but the method makes the user of bandwidth demand deficiency also occupy unnecessary bandwidth resources, and the user resources anxiety that some bandwidth demand is high, cause bandwidth resource allocation unreasonable, thus cause optical signal transmission efficiency comparison low.
Summary of the invention
Main purpose of the present invention is to provide a kind of optical signal transmission method and ONU, the problem that the optical signal transmission efficiency comparison caused because Resourse Distribute is unreasonable with the optical signal transmission method solved in correlation technique is low.
According to an aspect of the present invention, a kind of optical signal transmission method is provided.
Optical signal transmission method according to the present invention comprises: ONU determines its bandwidth resources state; The first tunable optical transceiver module that ONU is arranged thereon according to bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wherein, first tunable optical transceiver module is set to system configuration wavelength, and the second tunable optical transceiver module is set to predetermined wavelength.
Further, ONU determines that its bandwidth resources state comprises: ONU determines that its bandwidth resources state is for not enough; The first tunable optical transceiver module that ONU is arranged thereon according to bandwidth resources state and/or the transmission of one or more second tunable optical transceiver module enterprising traveling optical signal comprise: the reception wavelength of one or more second tunable optical transceiver modules that it is arranged by the first tunable optical transceiver module receiving optical signals on Operation system setting wavelength of its upper setting, and is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of bandwidth resources, receives data by time division multiplexing mode by ONU; Or ONU sends light signal by the first tunable optical transceiver module that it is arranged on Operation system setting wavelength, and the transmission wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of bandwidth resources, sends data by time division multiplexing mode.
Further, ONU determines that its bandwidth resources state comprises: ONU determines that its bandwidth resources state is for residue; The first tunable optical transceiver module that ONU is arranged thereon according to bandwidth resources state and/or the transmission of one or more second tunable optical transceiver module enterprising traveling optical signal comprise: its remaining bandwidth resources in Operation system setting wavelength transmit optical signals by the first tunable optical transceiver module of its upper setting, and are distributed to other coupled ONU by time division multiplexing mode and carried out optical signal transmission by ONU.
Further, said method also comprises: the reception wavelength of the one or more second tunable optical transceiver modules on it is set to broadcast singal or wavelength corresponding to unicast signal by ONU; ONU is receiving broadcast signal or unicast signal on the wavelength of correspondence.
Further, said method also comprises: the second predetermined wavelength that other ONU that the reception wavelength of the one or more second tunable optical transceiver modules on it is set to coexist with ONU in a multicast group by ONU are identical, and wherein the second predetermined wavelength is the transmission wavelength of the multicast service of multicast group; ONU is receiving multicast business on the second predetermined wavelength.
Further, one or more second tunable optical transceiver modules of ONU use Operation system setting wavelength to carry out the transmission of light signal when the first tunable optical transceiver module breaks down.
Further, Operation system setting wavelength is when ONU initialization, one group that is distributed by optical line terminal (OLT) corresponding up-downgoing wavelength.
According to a further aspect in the invention, a kind of ONU is provided.
ONU according to the present invention comprises: determination module, for determining the bandwidth resources state of its place ONU; Transport module, for the first tunable optical transceiver module of arranging on the ONU of its place according to bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wherein, first tunable optical transceiver module is set to system configuration wavelength, and the second tunable optical transceiver module is set to predetermined wavelength.
Further, determination module comprises: first determines submodule, for determining that its place ONU bandwidth resources state is for not enough; Transport module comprises: receive submodule, the the first tunable optical transceiver module receiving optical signals on Operation system setting wavelength arranged on the ONU of its place, and the reception wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of bandwidth resources, receives data by time division multiplexing mode; Or
Send submodule, on Operation system setting wavelength, send light signal for the first tunable optical transceiver module by its place ONU is arranged, and the transmission wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of bandwidth resources, sends data by time division multiplexing mode.
Further, determination module comprises: second determines submodule, for determining that its place ONU bandwidth resources state is for residue; Transport module comprises: process submodule, for the first tunable optical transceiver module by the upper setting of its place ONU in Operation system setting wavelength transmit optical signals, and its remaining bandwidth resources are distributed to other coupled ONU by time division multiplexing mode carry out optical signal transmission.
Further, above-mentioned ONU also comprises: first arranges module, for the reception wavelength of the one or more second tunable optical transceiver modules on the ONU of its place being set to broadcast singal or wavelength corresponding to unicast signal; First receiver module, for receiving broadcast signal or unicast signal on broadcast singal or wavelength corresponding to unicast signal.
Further, above-mentioned ONU also comprises: second arranges module, for the second predetermined wavelength that other ONU being set to coexist with ONU in a multicast group by the reception wavelength of the one or more second tunable optical transceiver modules on the ONU of its place are identical, wherein the second predetermined wavelength is the transmission wavelength of the multicast service of multicast group; Second receiver module, for receiving multicast business on the second predetermined wavelength.
Pass through the present invention, adopt ONU after determining bandwidth resources state, the the first tunable optical transceiver module arranged thereon according to bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wavelength resource can be distributed according to bandwidth resources state, solve the problem that optical signal transmission efficiency comparison that the optical signal transmission method in correlation technique causes because Resourse Distribute is unreasonable is low, improve resource utilization and the performance of optical signal transmission.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the WDM-PON operation principle schematic diagram according to correlation technique;
Fig. 2 is the flow chart of the optical signal transmission method according to the embodiment of the present invention;
Fig. 3 is the WDM-PON operation principle schematic diagram of the downstream wavelength bandwidth dynamic assignment according to the embodiment of the present invention;
Fig. 4 is the schematic diagram of the ONU record principle of downstream wavelength bandwidth dynamic assignment according to the embodiment of the present invention;
Fig. 5 is the WDM-PON operation principle schematic diagram according to the wide dynamic assignment of the upstream wavelengths band of the embodiment of the present invention;
Fig. 6 is the single ripple multicast Coexistence mode operation principle schematic diagram according to the embodiment of the present invention;
Fig. 7 is the record principle schematic diagram one according to the single ONU in the multicast service group of the embodiment of the present invention;
Fig. 8 is the record principle schematic diagram two according to the single ONU in the multicast service group of the embodiment of the present invention;
Fig. 9 is the structured flowchart of the ONU according to the embodiment of the present invention; And
Figure 10 is the preferred structured flowchart of the ONU according to the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Present embodiments provide a kind of optical signal transmission method, Fig. 2 is the flow chart of the optical signal transmission method according to the embodiment of the present invention, and as shown in Figure 2, the method comprises:
Step S202:ONU determines its bandwidth resources state.
The first tunable optical transceiver module that step S204:ONU is arranged thereon according to bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wherein, first tunable optical transceiver module is set to system configuration wavelength, and the second tunable optical transceiver module is set to predetermined wavelength.
Pass through above-mentioned steps, ONU is after determining bandwidth resources state, the the first tunable optical transceiver module arranged thereon according to bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wavelength resource can be distributed according to bandwidth resources state, overcome the problem that optical signal transmission efficiency comparison that the optical signal transmission method in correlation technique causes because Resourse Distribute is unreasonable is low, improve resource utilization and the performance of optical signal transmission.
Preferably, ONU determines that its bandwidth resources state comprises: ONU determines that its bandwidth resources state is for not enough; The first tunable optical transceiver module that ONU is arranged thereon according to bandwidth resources state and/or the transmission of one or more second tunable optical transceiver module enterprising traveling optical signal comprise: the reception wavelength of one or more second tunable optical transceiver modules that it is arranged by the first tunable optical transceiver module receiving optical signals on Operation system setting wavelength of its upper setting, and is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of bandwidth resources, receives data by time division multiplexing mode by ONU; Or
ONU by it arrange the first tunable optical transceiver module on Operation system setting wavelength, send light signal, and the transmission wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the remaining ONU of coupled bandwidth resources wavelength and by the wavelength transmitting data of time division multiplexing mode at the remaining ONU of bandwidth resources.By the preferred embodiment, ONU, when inadequate resource, uses remaining bandwidth to carry out data transmission or reception by the second tunable optical transceiver module that it is arranged, improves the resource utilization of system.
Preferably, ONU determines that its bandwidth resources state comprises: ONU determines that its bandwidth resources state is for residue; The first tunable optical transceiver module that ONU is arranged thereon according to bandwidth resources state and/or the transmission of one or more second tunable optical transceiver module enterprising traveling optical signal comprise: its remaining bandwidth resources by the first tunable optical transceiver module receiving optical signals on Operation system setting wavelength of its upper setting, and are distributed to other coupled ONU by time division multiplexing mode and carried out optical signal transmission by ONU.By the preferred embodiment, its remaining bandwidth resource allocation, under resource status is remaining situation, is carried out optical signal data transmission to all the other coupled ONU, is improve resource utilization by ONU.
Preferably, the reception wavelength of the one or more second tunable optical transceiver modules on it is set to broadcast singal or wavelength corresponding to unicast signal by ONU; ON U is receiving broadcast signal or unicast signal on the wavelength of correspondence.By the preferred embodiment, being wavelength corresponding to broadcast singal or unicast signal by arranging wavelength, achieving and receiving clean culture and broadcast singal, improve the practicality of the method.
Preferably, the second predetermined wavelength that other ONU that the reception wavelength of the one or more second tunable optical transceiver modules on it is set to coexist with ONU in a multicast group by ONU are identical, wherein the second predetermined wavelength is the transmission wavelength of the multicast service of multicast group; ON U is receiving multicast business on the second predetermined wavelength.By the preferred embodiment, achieve multicast service, improve the practicality of the method, reduce the cost realizing multicast service.
Preferably, one or more second tunable optical transceiver modules of ONU use Operation system setting wavelength to carry out the transmission of light signal when the first tunable optical transceiver module breaks down.By the preferred embodiment, achieve the main-apparatus protection of ONU, improve the fail safe of system.
Preferably, Operation system setting wavelength is when ONU initialization, one group that is distributed by optical line terminal (OLT) corresponding up-downgoing wavelength.By the preferred embodiment, system wavelength is that OLT distributes, and improves the reliability that system wavelength is distributed.
Embodiment one
Present embodiments provide the dynamic wavelength bandwidth allocation methods that a kind of WDM/TDM mixes, the present embodiment combines above-described embodiment and preferred implementation wherein, and the method comprises:
Each ONU is furnished with two identical tunable optical transceiver modules, and these two adjustable light modules all have burst transmissions function, can send the uplink optical signal of burst mode.According to user bandwidth needs, each ONU can take the bandwidth resources of two wavelength, also only with a wavelength bandwidth, or can share a wavelength bandwidth resource with other ONU by time division multiplexing.
Preferably, the uplink and downlink works wavelength that each ONU has to give tacit consent to, when this operation wavelength is ONU initialization, optical line terminal (Optical Line Terminal, referred to as OLT) distributes to up-downgoing wavelength corresponding to a group of this ONU.In two adjustable light modules that each ONU is furnished with, one of them is acquiescence optical transceiver module A, is operated in the uplink and downlink works wavelength of acquiescence.One is optional optical transceiver module B, and optional optical transceiver module B is used for using when giving tacit consent to optical transceiver module A bandwidth resources and being inadequate.
Preferably, when the downlink bandwidth demand of a certain user is less, the downstream wavelength bandwidth resource that this user uses can be given other one or more users by time-multiplexed form and jointly use, only the reception wavelength of the optional optical receiver B of these ONU need be transferred to the downlink working wavelength that this user uses, receive the downstream signal of corresponding time slot.
Preferably, when the upstream bandwidth demand deficiency of a certain user, one or more users that the wide resource of the upstream wavelengths band that this user uses can give other bandwidth demands large by time-multiplexed form use jointly.Only need share to multiple ONU by time-multiplexed mode the uplink bandwidth resource of this wavelength.OLT side is received by the receiver that this wavelength is corresponding, then gives multiple ONU according to Dynamic Bandwidth Allocation (DBA) algorithm assigns.
Preferably, the unnecessary downlink bandwidth of some ONU can be utilized, load downlink broadcast services, only the reception wavelength of the optional optical transceiver module of all ONU except this ONU all need be transferred to this wavelength, receive the broadcast singal of corresponding time slot.All ONU all can receive unicast signal and broadcast singal simultaneously.
Preferably, by the unnecessary downlink bandwidth of some ONU, downlink multicast business can be loaded, only the reception wavelength of the optional optical transceiver module of all ONU in the multicast group of correspondence need be transferred to the corresponding wavelength of this downlink multicast signal.
Preferably, when the acquiescence optical module of certain ONU breaks down, when cannot normally work, optional optical module can be adjusted to the operation wavelength of acquiescence optical module as optical module for subsequent use.
In the present embodiment, Optical Distribution Network (Optical Distribution Network, referred to as ODN) remain the form of traditional passive optical splitter, this mode is without the need to transforming ODN network, decrease network construction cost, and wavelength chooses mechanism is put into optical network unit (Optical Network Unit, referred to as ONU) side realizes, namely adopt tunable wave length receiver (with the optical receiver of tunable wave length filter plate in ONU, hereinafter referred to as tunable receiver) receive the downstream signal of respective wavelength passage, up, adopt Wavelength tunable laser (hereinafter referred to as tunable laser), thus realize " colourless " ONU.Although adopt tunable devices can realize " colourless " ONU, significantly reduce networking and the maintenance cost of WDM-PON.
Embodiment two
Present embodiments provide a kind of downstream wavelength bandwidth dynamic allocation method, the present embodiment combines above-described embodiment and preferred implementation wherein, in the present embodiment, when a certain user downlink bandwidth resource excess time, the bandwidth of this user's downstream wavelength passage can be divided into some parts according to time-multiplexed mode by OLT, and the user giving other uses.
The method comprises: be provided with two optical modules in each ONU, and one is acquiescence optical module A, and one is optional optical module B.When ONU bandwidth demand is less, only starts acquiescence optical module A, use and give tacit consent to wavelength a pair.When ONU bandwidth demand is larger, during the maximum bandwidth that can carry more than a wavelength, then enable optional optical module B, optical module B is operated in other operation wavelengths being different from optical module A, take the fractional bandwidth being operated in this wavelength ONU, the bandwidth of an ONU can be given other ONU multiple and use.
Fig. 3 is the WDM-PON operation principle schematic diagram of the downstream wavelength bandwidth dynamic assignment according to the embodiment of the present invention, as shown in Figure 3, for downstream signal, if ONU 2 downlink bandwidth demand is less, and ONU 1 and ONU N bandwidth demand are comparatively large, then partial time slot just can be given ONU1 and ONUn by ONU 2.
Due to ODN Web vector graphic is optical branching device, therefore, the downlink optical signal of all wavelengths is sent to each ONU, Fig. 4 is the schematic diagram of the ONU record principle of downstream wavelength bandwidth dynamic assignment according to the embodiment of the present invention, as shown in Figure 4, acquiescence optical module A and optional optical module B is all assigned at the optical branching device by ONU inside.The reception wavelength of the optional optical module B of ONU 1 and ONU n is transferred to the downlink working wavelength X of ONU2
d2, receive the downstream signal of this wavelength corresponding time slot, thus the downlink bandwidth of expansion ONU 1 and ONU N.ONU 2 is little due to bandwidth demand, therefore only enables acquiescence optical module A, uses wavelength X
d2fractional bandwidth, and optional optical module B does not work.
Embodiment three
Present embodiments provide the wide dynamic allocation method of a kind of upstream wavelengths band, the present embodiment combines above-described embodiment and preferred implementation wherein.
Fig. 5 is the WDM-PON operation principle schematic diagram according to the wide dynamic assignment of the upstream wavelengths band of the embodiment of the present invention, as shown in Figure 5, when the upstream bandwidth demand of ONU 2 is less, ONU 2 can discharge a part of upstream bandwidth, give other one or more users and use (as the ONU 1 in the present embodiment and ONU N), it is λ that ONU 1 and ONU N enables optional optical module B transmission wavelength
u2burst upstream signal, the wavelength sent with ONU 2 is λ
u2burst upstream signal according to time-multiplexed mode, converged in trunk fiber by optical branching device and transmit, the acquiescence optical module of ONU 1 and ONU N is still operated in respective acquiescence operation wavelength.The upward signal of each wavelength is in OLT side by being sent to the optical module of each wavelength channel after wavelength multiplexing demodulation multiplexer (MUX/DEMUX) partial wave, wavelength is λ
u2, the up light being loaded with the common time division multiplexing light signal of ONU 1, ONU 2 and ONU N receives by optical module 2 is unified, then distributes to corresponding user according to bandwidth corresponding relation.
Embodiment four
Present embodiments provide a kind of clean culture method of realizing group broadcasting, in the present embodiment, utilize the unnecessary downlink bandwidth of certain user, send multicast signal or broadcast singal.
Fig. 6 is the single ripple multicast Coexistence mode operation principle schematic diagram according to the embodiment of the present invention, and as shown in Figure 6, utilize m user and the unnecessary downlink bandwidth of a kth user, send two groups of multicast services respectively, the wavelength that optical module M sends is λ
dmin downlink optical signal, comprise the unicast signal of user M and broadcast singal two parts of multicast service group 1, the reception wavelength of the optional optical module of all ONU in this multicast service group 1 is all adjusted to wavelength X
dmif (multicast service group 1 comprises ONU M, due to the reception wavelength originally λ of the acquiescence optical module of ONU M
dm, therefore need not enable optional optical module).But due to the unicast signal that all ONU in multicast service group 1 in this case all can receive user m, therefore need by certain authentication mechanism, allow all ONU of (except ONU M) in this multicast group business abandon the unicast signal of user M.
Fig. 7 is the record principle schematic diagram according to the single ONU in the multicast service group of the embodiment of the present invention, and as shown in Figure 7, ONU x is that the acquiescence optical module of X ONU in multicast service group 1, ONU x receives its acquiescence downstream wavelength λ
dxunicast signal, it is λ that optional optical module receives wavelength
dmdownlink optical signal, but receive only multicast signal part wherein, abandon the unicast signal portion of user M.Equally, the downlink multicast principle of multicast service group 2 is identical with multicast service group 1, Fig. 8 is the record principle schematic diagram two according to the single ONU in the multicast service group of the embodiment of the present invention, as shown in Figure 8, ONU y is that the acquiescence optical module of y ONU in multicast service group 2, ONU y receives its acquiescence downstream wavelength λ
dyunicast signal, it is λ that optional optical module receives wavelength
dkdownlink optical signal, but receive only multicast signal part wherein, abandon the unicast signal portion of user K.
Preferably, as a special case of multicast application, some multicast group can be allowed to comprise all ONU, in like manner just can realize the transmission of broadcasting service.
Embodiment five
Present embodiments provide a kind of ONU with main-apparatus protection function; in the present embodiment; when the acquiescence optical module of some ONU breaks down; when cannot normally work; the operation wavelength of optional optical module can be adjusted to the operation wavelength of original acquiescence optical module, allow optional optical module use as optical module for subsequent use.
Present embodiments provide the structured flowchart that a kind of ONU, Fig. 9 are the ONU according to the embodiment of the present invention, as shown in Figure 9, this ONU comprises: determination module 92 and transport module 94, be described in detail said structure below:
Determination module 92, for determining the bandwidth resources state of its place ONU; Transport module 94, be connected to determination module 92, for according to determination module 92, the first tunable optical transceiver module that the bandwidth resources state determined is arranged on the ONU of its place and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wherein, first tunable optical transceiver module is set to system configuration wavelength, and the second tunable optical transceiver module is set to predetermined wavelength.
Figure 10 is the preferred structured flowchart of the ONU according to the embodiment of the present invention, and as shown in Figure 9, this ONU also comprises: first arranges module 102, and the first receiver module 104, the second arranges module 106, the second receiver module 108; Determination module 92 comprises: first determines that submodule 922, second determines submodule 924; Transport module 94 comprises: receive submodule 942, sends submodule 944, process submodule 946, is described in detail below to said structure:
Determination module 92 comprises: first determines submodule 922, for determining that its place ONU bandwidth resources state is for not enough; Transport module 94 comprises: receive submodule 942, be connected to first and determine submodule 922, determine that submodule 922 determines that its place ONU bandwidth resources state is for time not enough for first, by the first tunable optical transceiver module receiving optical signals on Operation system setting wavelength that its place ONU is arranged, and the reception wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of bandwidth resources, receives data by time division multiplexing mode; Or send submodule 944, be connected to first and determine submodule 922, determine that submodule 922 determines that its place ONU bandwidth resources state is for time not enough for first, on Operation system setting wavelength, send light signal by the first tunable optical transceiver module that its place ONU is arranged, and the mode wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of bandwidth resources, sends data by time division multiplexing mode.
Determination module 92 comprises: second determines submodule 924, for determining that its place ONU bandwidth resources state is for residue; Transport module 94 comprises: process submodule 946, be connected to second and determine submodule 924, submodule 924 is determined for second, when determining its place ONU bandwidth resources state for residue, by the first tunable optical transceiver module that its place ONU is arranged in Operation system setting wavelength transmit optical signals, and its remaining bandwidth resources are distributed to other coupled ONU by time division multiplexing mode carry out optical signal transmission.
Above-mentioned ONU also comprises:
First arranges module 102, for the reception wavelength of the one or more second tunable optical transceiver modules on the ONU of its place being set to broadcast singal or wavelength corresponding to unicast signal;
First receiver module 104, is connected to first and arranges module 102, for arranging receiving broadcast signal or unicast signal on broadcast singal or wavelength corresponding to unicast signal that module 102 arranges first.
Above-mentioned ONU also comprises:
Second arranges module 106, for the second predetermined wavelength that other ONU being set to coexist with ONU in a multicast group by the reception wavelength of the one or more second tunable optical transceiver modules on the ONU of its place are identical, wherein the second predetermined wavelength is the transmission wavelength of the multicast service of multicast group;
Second receiver module 108, is connected to second and arranges module 106, for second arrange module 106 arrange the second predetermined wavelength on receiving multicast business.
Pass through above-described embodiment, provide a kind of optical signal transmission method and ONU, by ONU after determining bandwidth resources state, the the first tunable optical transceiver module arranged thereon according to bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wavelength resource can be distributed according to bandwidth resources state, overcome the problem that optical signal transmission efficiency comparison that the optical signal transmission method in correlation technique causes because Resourse Distribute is unreasonable is low, improve resource utilization and the performance of optical signal transmission.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an optical signal transmission method, is characterized in that, comprising:
Optical network unit ONU determines its bandwidth resources state;
The first tunable optical transceiver module that described ONU is arranged thereon according to described bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wherein, described first tunable optical transceiver module is set to system configuration wavelength, and described second tunable optical transceiver module is set to predetermined wavelength;
Wherein, described method also comprises:
The second predetermined wavelength that other ONU that the reception wavelength of the one or more second tunable optical transceiver modules on it is set to coexist in a multicast group with described ONU by described ONU are identical, wherein said second predetermined wavelength is the transmission wavelength of the multicast service of described multicast group;
Described ONU is receiving multicast business on described second predetermined wavelength.
2. method according to claim 1, is characterized in that,
Described ONU determines that its bandwidth resources state comprises:
Described ONU determines that its bandwidth resources state is for not enough;
The first tunable optical transceiver module that described ONU is arranged thereon according to described bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module comprise:
First tunable optical transceiver module on described Operation system setting wavelength the receiving optical signals of described ONU by it is arranged, and the reception wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of described bandwidth resources, receives data by time division multiplexing mode; Or
Described ONU sends light signal by the first tunable optical transceiver module that it is arranged on described Operation system setting wavelength, and the transmission wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of described bandwidth resources, sends data by time division multiplexing mode.
3. method according to claim 1, is characterized in that,
Described ONU determines that its bandwidth resources state comprises:
Described ONU determines that its bandwidth resources state is for residue;
The first tunable optical transceiver module that described ONU is arranged thereon according to described bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module comprise:
Its remaining bandwidth resources in described Operation system setting wavelength transmit optical signals by the first tunable optical transceiver module of its upper setting, and are distributed to other coupled ONU by time division multiplexing mode and are carried out optical signal transmission by described ONU.
4. method according to claim 1, is characterized in that, also comprises:
The reception wavelength of the one or more second tunable optical transceiver modules on it is set to broadcast singal or wavelength corresponding to unicast signal by described ONU;
Described ONU receives described broadcast singal or described unicast signal on the wavelength of described correspondence.
5. method according to claim 1, is characterized in that, described one or more second tunable optical transceiver modules of described ONU use described Operation system setting wavelength to carry out the transmission of light signal when described first tunable optical transceiver module breaks down.
6. method according to any one of claim 1 to 5, is characterized in that, described Operation system setting wavelength is when described ONU initialization, one group that is distributed by optical line terminal OLT corresponding up-downgoing wavelength.
7. an optical network unit ONU, is characterized in that, comprising:
Determination module, for determining the bandwidth resources state of its place ONU;
Transport module, for the first tunable optical transceiver module of arranging on the ONU of its place according to described bandwidth resources state and/or the enterprising traveling optical signal transmission of one or more second tunable optical transceiver module, wherein, described first tunable optical transceiver module is set to system configuration wavelength, and described second tunable optical transceiver module is set to predetermined wavelength;
Wherein, described ONU also comprises:
Second arranges module, for the second predetermined wavelength that other ONU being set to coexist in a multicast group with described ONU by the reception wavelength of the one or more second tunable optical transceiver modules on the ONU of its place are identical, wherein said second predetermined wavelength is the transmission wavelength of the multicast service of described multicast group;
Second receiver module, for receiving multicast business on described second predetermined wavelength.
8. ONU according to claim 7, is characterized in that,
Described determination module comprises:
First determines submodule, for determining that its place ONU bandwidth resources state is for not enough;
Described transport module comprises:
Receive submodule, the the first tunable optical transceiver module receiving optical signals on described Operation system setting wavelength arranged on the ONU of its place, and the reception wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of described bandwidth resources, receives data by time division multiplexing mode; Or
Send submodule, on described Operation system setting wavelength, send light signal for the first tunable optical transceiver module by its place ONU is arranged, and the transmission wavelength of one or more second tunable optical transceiver modules that it is arranged is set to the wavelength of the remaining ONU of coupled bandwidth resources and on the wavelength of the remaining ONU of described bandwidth resources, sends data by time division multiplexing mode.
9. ONU according to claim 7, is characterized in that,
Described determination module comprises:
Second determines submodule, for determining that its place ONU bandwidth resources state is for residue;
Described transport module comprises:
Process submodule, for the first tunable optical transceiver module by the upper setting of its place ONU in described Operation system setting wavelength transmit optical signals, and its remaining bandwidth resources are distributed to other coupled ONU by time division multiplexing mode carry out optical signal transmission.
10. ONU according to claim 7, is characterized in that, also comprises:
First arranges module, for the reception wavelength of the one or more second tunable optical transceiver modules on the ONU of its place being set to broadcast singal or wavelength corresponding to unicast signal;
First receiver module, for receiving described broadcast singal or described unicast signal on described broadcast singal or wavelength corresponding to unicast signal.
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| WO2015027486A1 (en) | 2013-08-30 | 2015-03-05 | 华为技术有限公司 | Uplink signal transmission method, processing device and system |
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| CN101217459A (en) * | 2007-12-27 | 2008-07-09 | 华中科技大学 | An Ethernet passive optical network dynamic bandwidth distribution method based on bandwidth credit |
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