CN101924688B - Uplink bandwidth allocation method and device - Google Patents

Abstract

The invention discloses a kind of uplink bandwidth allocation method and device, the method includes: lower network element receives the bandwidth distribution structure from upper layer network element, and wherein, bandwidth distribution structure carries incidence relation information and temporal information；Lower network element, according to incidence relation information and temporal information, is safeguarded data transmission state, and is obtained uplink total bandwidth to carry out transmitting uplink data.When the present invention solves transmitting uplink data, when upper layer network element is assigned with several continuous print bandwidth distribution structures to certain lower network element, the loss of one of them (non-final one) bandwidth distribution structure may cause the problem that bandwidth distribution structure thereafter is also lost, and then effectively limits because losing the coverage that one of them bandwidth distribution structure causes a loss thereafter or multiple bandwidth distribution structure to lose and produce.

Description

Uplink bandwidth allocation method and device

Technical field

The present invention relates to communication technical field, particularly relate to the up band of the one in the communications field Bandwidth allocation method and device.

Background technology

Gigabit passive optical network (Gigabit-Capable Passive Optical Network, Referred to as GPON) technology is an important technology in EPON (PON) family Branch, similar with other PON technology, GPON is also a kind of employing point-to-multipoint topology knot The passive light access technology of structure.

By the optical line terminal of office side, (Optical Line Terminal is referred to as GPON OLT), the optical network unit (Optical Network Unit, referred to as ONU) of user side And Optical Distribution Network (Optical Distributio Network, referred to as ODN) composition, Generally use point-to-multipoint network structure.ODN is by single-mode fiber, optical branching device, light even Connect the Passive Optical Components compositions such as device, provide light to pass for the physical connection between OLT and ONU Defeated medium.

In GPON system, the data transmission of down direction (by OLT to ONU) uses Broadcast mode, each ONU receives all of frame respectively, further according to ONU-ID, GEM-Port ID, Allocation-ID obtain one's own frame.But, for up direction (from ONU to OLT) data transmission, due to transmission medium to be shared, need by suitable Control process, just can make each ONU upstream data information completely be sent to OLT. Uplink frame uses time division multiplex to access, and (Time Division Multiple Access is referred to as TDMA) technology, this technology uses and up channel is divided into multiple time slot, ONU to OLT sends the report sending upstream data, and OLT distributes according to the ONU that is reported as of ONU Upstream bandwidth and control its certain time slot send data, OLT can also pass through flow monitoring Upstream bandwidth is distributed for ONU.

At present, specifying in the G.984.3 standard of ITU-T, OLT is ONU distribution Upstream bandwidth is with Bandwidth map bandwidth distribution structure (BWmap allocation structures) Mode physical control block downstream (the Physical Control Block by downlink frame Downstream, referred to as PCBd) carry transmission.

Fig. 1 be downlink frame physical control block downstream in Bandwidth map bandwidth distribution structure detailed Fine texture schematic diagram.As it is shown in figure 1, downlink frame is made up of PCBd and payload two parts, Wherein, PCBd farther includes: Physical Synchronization (Physical Synchronization, letter Be referred to as Psync) territory, Ident territory, down physical layer operational administrative with safeguard (Physical Layer OAM (Operation, Administraion & Maintenance) downstream, letter Be referred to as Ploamd) territory, bit interleaved parity territory (Bit Interleaved Parity, be called for short For BIP), information payload length field (Payload Length downstream, referred to as Plend) Mapping territory (US BWmap) composition with upstream bandwidth, wherein, US BWmap enters one in territory Step is made up of N number of bandwidth distribution structure (Allocation Structure), wherein, and each band Wide distribution structure the most respectively by Alloc-ID (Allocation Identifier, bandwidth allocation identification, Usually transmit container (Transmission Container, referred to as T-CONT) mark) Territory, Flags territory (bandwidth distribution option, 12 bits, respectively bit 11-0, its Middle bit 10 is used for notifying that ONU sends PLOAM message, bit in this upstream bandwidth 6-0 is reservation bit position), StartTime territory (for represent transmission upstream data initial time Between), StopTime territory (for represent transmission upstream data end time) and circulate superfluous Remaining check code (Cyclic Redundancy Check, referred to as CRC) territory composition.

Wherein, when ONU receives an Allocation structure, first ONU Data in the Allocation structure received are carried out CRC check, if verification Result is correct, according to Alloc-ID, ONU judges that whether this Allocation structure is point Dispensing oneself, if it is, ONU will indicate at Allocation structure The StartTime moment starts to send the number in the T-CONT that bandwidth allocation identification is Alloc-ID According to, stop sending data after the StopTime moment has sent data.If CRC detects During to the most repairable mistake, then show the data in the Allocation structure received There occurs the most repairable mistake in the transmission, then ONU must abandon the distribution of this bandwidth, closes Closing laser instrument, to avoid potential up luminous conflict, deserving to be called the situation of stating is that ONU loses One Allocation structure.

In correlation technique, when OLT is assigned with several continuous print to an ONU Allocation structure (the StratTime value in i.e. next Allocation structure Equal to a upper StopTime value after subtracting one), one of them Allocation structure is (no It is last Allocation structure) lose, ONU will close laser instrument, if The transmission time that the distribution bandwidth of this Allocation structure lost is corresponding is less than guarantor When protecting the time physical layer overhead (PLO) the time sum of (Guard-Time) and ONU, Number in ONU prepares the next T-CONT corresponding for Allocation structure of transmission According to time, the most promising ONU of OLT reserves the time of enough Guard-Time and PLO, Next Allocation structure may be caused to lose.Therefore, certain ONU is given as OLT Be assigned with several continuous print Allocation structure, if one of them (non-final one Individual) loss of Allocation structure may cause ensuing Allocation structure Also lose.

In prior art, certain method is not also had to avoid an Allocation Structure Lose impact on Allocation Structure thereafter, the most not to losing Allocation The restoration methods of Structure so that GPON fault-tolerant ability in terms of upstream bandwidth distribution Existing defects.

Summary of the invention

For in correlation technique, when upper layer network element gives certain lower network element, to be assigned with several continuous Allocation structure time, one of them (non-final one) Allocation structure Loss problem that ensuing Allocation structure also loses may be caused to propose The present invention, to this end, present invention is primarily targeted at the upstream bandwidth providing a kind of improvement Distribution method and device, to solve at least one the problems referred to above.

To achieve these goals, according to an aspect of the invention, it is provided one is up Bandwidth allocation methods.

Uplink bandwidth allocation method according to the present invention includes: lower network element receives from upper strata The bandwidth distribution structure of network element, wherein, bandwidth distribution structure carry incidence relation information and time Between information；Lower network element, according to incidence relation information and temporal information, safeguards that data transmit shape State, and obtain uplink total bandwidth to carry out transmitting uplink data.

Preferably, incidence relation information includes at least one of: distribute to lower network element The sum of continuous bandwidth distribution structure and the index of current bandwidth distribution structure or position；? After current bandwidth distribution structure, distribute to lower network element continuous bandwidth distribution structure Number；Before current bandwidth distribution structure, distribute to the continuous bandwidth distribution knot of lower network element The number of structure；Whether current bandwidth distribution structure belongs to previous or multiple bandwidth distribution structures Continuous bandwidth in same lower network element；Current bandwidth distribution structure and later or multiple Whether bandwidth distribution structure belongs to the continuous bandwidth of same lower network element.

Preferably, temporal information includes: use the bandwidth distribution structure belonging to temporal information to enter The time started of row data transmission and end time.

Preferably, obtain uplink total bandwidth to include to carry out transmitting uplink data: to band The data of wide distribution structure verify；In the case of verification is correct, this bandwidth is used to divide Distribution structure is to carry out transmitting uplink data；In the case of check errors, according to incidence relation Information determines that the bandwidth distribution structure of one or more check errors is at continuous print bandwidth distribution knot Position in structure, abandons one or more bandwidth distribution structures of check errors, or, extensive The temporal information of the bandwidth distribution structure of multiple whole check errors, and obtain according to temporal information Uplink total bandwidth is to carry out transmitting uplink data.

Preferably, the temporal information of the bandwidth distribution structure recovering whole check errors includes: Current bandwidth distribution structure is identified, it is judged that whether front and back also has verification correct Bandwidth distribution structure；If one or more adjacent bandwidths distribution structures tool of check errors Two bandwidth distribution structures adjacent before and after having verification correct, then according to the most adjacent two Temporal information in individual bandwidth distribution structure, recovers the bandwidth distribution structure of whole check errors Temporal information, wherein, by adjacent later bandwidth distribution structure initial time believe Cease the difference with the end time information in adjacent previous bandwidth distribution structure as whole school The temporal information of error checking bandwidth distribution structure by mistake.

Preferably, the verification that one or more adjacent bandwidths distribution structures of check errors have Two bandwidth distribution structures adjacent before and after Zheng Que include distributing knot through the bandwidth of over recovery Structure.

Preferably, the one or more bandwidth distribution structures abandoning check errors include: if One or more adjacent bandwidths distribution structures of check errors do not have phase before and after verification correctly Two adjacent bandwidth distribution structures, then abandon one or more bandwidth distribution knot of check errors Structure.

Preferably, after recovering the temporal information of bandwidth distribution structure of whole check errors, Method also includes: abandon one or more bandwidth distribution structures of the check errors of recovery, and Send idle frame, or, the one or more bandwidth distribution to the check errors recovered respectively Each address identification message in structure verifies, and belongs to lower floor at address identification message In the case of network element, carry out transmitting uplink data.

To achieve these goals, according to a further aspect in the invention, it is provided that a kind of up Bandwidth distributor.

Upstream bandwidth distributor according to the present invention includes: receives unit, is used for receiving From the bandwidth distribution structure of upper layer network element, wherein, bandwidth distribution structure carries incidence relation letter Breath and temporal information；Maintenance unit, for according to incidence relation information, arranges and keeps number According to transmission state；Acquiring unit, for according to temporal information, obtains uplink total bandwidth.

Preferably, acquiring unit includes: correction verification module, for the number to bandwidth distribution structure According to verifying；Determine module, in the case of check errors, according to incidence relation Information determines that the continuous bandwidth distribution structure of one or more check errors is divided in continuous print bandwidth Position in distribution structure；Acquisition module, for the correct or verification according to first verification After the bandwidth distribution structure that can recover and last is correct or can recover after verification Bandwidth distribution structure in temporal information, obtain uplink total bandwidth.

Preferably, acquisition module includes: recover submodule, for according to the one of check errors Two bandwidth distribution adjacent before and after individual or multiple continuous bandwidth distribution structure verification is correct Temporal information in structure, recovers one or more continuous bandwidth distribution structures of check errors.

Preferably, acquisition module includes: process submodule, for abandoning the one of check errors Individual or multiple continuous bandwidth distribution structures, wherein, one or more continuous bands of check errors Wide distribution structure do not have identified before and after adjacent two bandwidth distribution structures.

Pass through the present invention, it is provided that the allocative decision of a kind of upstream bandwidth, ONU receive from The downlink frame of OLT, wherein, downlink frame carries incidence relation information and temporal information；ONU According to incidence relation information and temporal information, to occurring that the upstream bandwidth receiving mistake is allocated into Row error correction, obtains the uplink total bandwidth of this ONU after error correction, utilizes uplink Total bandwidth carries out data transmission.When solving transmitting uplink data, upper layer network element is under certain Layer network element be when being assigned with several continuous print Allocation structure, and one of them is (non- Later) loss of Allocation structure may cause Allocation thereafter The problem that structure also loses, and then effectively limit because losing one of them Allocation structure causes a loss thereafter or multiple Allocation structure The coverage lost and produce.

Other features and advantages of the present invention will illustrate in the following description, and, portion Divide ground to become apparent from specification, or understand by implementing the present invention.This Bright purpose and other advantages can be by the specification write, claims and attached Structure specifically noted in figure realizes and obtains.

Accompanying drawing explanation

Accompanying drawing is used for providing a further understanding of the present invention, and constitutes one of specification Point, it is used for together with embodiments of the present invention explaining the present invention, is not intended that the present invention's Limit.In the accompanying drawings:

Fig. 1 be downlink frame physical control block downstream in Bandwidth map bandwidth distribution structure detailed Fine texture schematic diagram；

Fig. 2 is the flow chart of the uplink bandwidth allocation method according to the preferred embodiment of the present invention；

Fig. 3 is the flow chart of present example one；

Fig. 4 is the flow chart of present example two；

Fig. 5 is the flow chart of present example three；

Fig. 6 is the flow chart of present example four；

Fig. 7 is the flow chart of present example five；

Fig. 8 is the flow chart of present example six；

Fig. 9 is the flow chart of present example seven；

Figure 10 is the structured flowchart of the upstream bandwidth distributor according to the embodiment of the present invention；

Figure 11 is the structural frames of the upstream bandwidth distributor according to the preferred embodiment of the present invention Figure.

Detailed description of the invention

Functional overview

Embodiments provide the transmitting uplink data scheme of a kind of improvement, particularly relate to In GPON system, ONU sends the situation of upstream data by ODN to OLT.Work as OLT When being assigned with several continuous print Allocation structure to an ONU, OLT passes through Reserved field in the Flags territory of Allocation structure carry information notice ONU this Sub-distribution gives the situation of its continuous Allocation structure (such as number, index or position Put, front and back the relation etc. of Allocation Structure).ONU utilizes this information analysis Receive several continuous print Allocation structure and obtain the up biography belonging to this ONU Defeated total bandwidth, ONU in the time that one's own uplink total bandwidth is corresponding in always Keep data transmission state (unlatching laser instrument).If ONU lost one or several Allocation structure, ONU need not OLT and reserve Guard-Time's and PLO Time, it is corresponding that ONU can normally transmit the Allocation structure not lost Data in T-CONT, effectively limit one or more Allocation structure and lose The coverage lost.

In the case of not conflicting, the embodiment in the application and the feature in embodiment are permissible It is mutually combined.

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that this Preferred embodiment described by place is merely to illustrate and explains the present invention, is not used to limit this Invention.If do not conflicted, the embodiment in the application and the feature in embodiment can be mutual Combination.

Embodiment of the method

According to embodiments of the present invention, provide firstly a kind of uplink bandwidth allocation method.

In GPON system, ONU (lower network element) sends to OLT (upper layer network element) and needs The report of data to be sent, OLT reporting or the actual uplink stream of ONU according to ONU Amount for ONU distribute upstream bandwidth, when OLT to some ONU be assigned with several continuously Allocation structure time, OLT is by the Allocation structure of downlink frame Flags territory in reserved bit (bit6-0) carry incidence relation information notice ONU this time Distribute to the number of its continuous Allocation structure.Carry out in detail below in conjunction with Fig. 2 Describe.

Fig. 2 is the flow chart of the uplink bandwidth allocation method according to the embodiment of the present invention.Such as figure Shown in 2, uplink bandwidth allocation method according to embodiments of the present invention includes following process (step Rapid S201-step S203):

Step S201: lower network element reception is from the bandwidth distribution structure of upper layer network element, wherein, Bandwidth distribution structure carries incidence relation information and temporal information；

Preferably, above-mentioned incidence relation information can include at least one of: distributes to connect Receive the sum of continuous bandwidth distribution structure of lower network element of downlink frame, current bandwidth distribution knot The index of structure or position；After current bandwidth distribution structure, distribute to the company of lower network element The number of continuous bandwidth distribution structure；Before current bandwidth distribution structure, distribute to lower floor The number of the continuous print bandwidth distribution structure of network element；Current bandwidth distribution structure with previous or Whether multiple bandwidth distribution structures belong to the continuous bandwidth of same ONU；Current bandwidth divides Whether distribution structure belongs to the continuous of same ONU with later or multiple bandwidth distribution structure Bandwidth.

Preferably, above-mentioned temporal information includes: use the bandwidth distribution knot belonging to temporal information Time started that structure carries out data transmission and end time.

Step S203: lower network element, according to incidence relation information and temporal information, safeguards data Transmission state, and obtain uplink total bandwidth to carry out transmitting uplink data.

Preferably, according to not losing the incidence relation information of Allocation structure, In the case of losing Allocation structure, continue to keep lower network element to be in data transmission State, does not the most close laser instrument.

Preferably, according to incidence relation information and temporal information, safeguard data transmission state, Obtain uplink total bandwidth, need first lower network element is arranged in data transmission shape State, i.e. OLT are first T-CONT corresponding for Allocation structure of ONU The time of reserved Guard-Time and PLO；Then judge whether front of or behind also has The bandwidth distribution structure of distribution, and according to first correct or can recover after verification Bandwidth distribution structure and last bandwidth distribution knot that is correct or that can recover after verification Temporal information in structure, determines uplink total bandwidth.

Preferably, need the data of bandwidth distribution structure are carried out verifying (such as, CRC Verification), utilize uplink total bandwidth to carry out data biography in two kinds of situation according to check results Defeated.

(1) for verifying correct bandwidth distribution structure, this bandwidth distribution structure is used to carry out Data are transmitted；

In specific implementation process, ONU will indicate at Allocation structure The StartTime moment starts to send the number in the T-CONT that bandwidth allocation identification is Alloc-ID According to, stop sending data in the StopTime moment.

(2) in the case of check errors, check errors is determined according to incidence relation information The position in continuous print bandwidth distribution structure of bandwidth distribution structure, and according to the position determined Put and carry out transmitting uplink data.

Preferably, in the case of check errors, (this bandwidth of the most above-mentioned loss is distributed The situation of structure), determine that according to incidence relation information the bandwidth of one or more check errors is divided Distribution structure position in continuous print bandwidth distribution structure, abandons of check errors or many Individual bandwidth distribution structure, or, recover the time of the bandwidth distribution structure of whole check errors Information, and obtain uplink total bandwidth to carry out transmitting uplink data according to temporal information.

Preferably, the bandwidth distribution structure of whole check errors is recovered (i.e. to check errors Bandwidth distribution structure carries out error correction) temporal information can be in the following manner: to current band Wide distribution structure is identified, it is judged that front and back the most also verifies correct bandwidth and divides Distribution structure；If one or more adjacent bandwidths distribution structures of check errors just have verification Two bandwidth distribution structures adjacent before and after Que, then divide according to two the most adjacent bandwidth Temporal information in distribution structure, recovers the time letter of the bandwidth distribution structure of whole check errors Breath, wherein, by the start time information in adjacent later bandwidth distribution structure with adjacent Previous bandwidth distribution structure in the difference of end time information as whole check errors The temporal information of bandwidth distribution structure.

Preferably, one or more adjacent bandwidths distribution structures of above-mentioned check errors have Before and after verification is correct, two adjacent bandwidth distribution structures can also include the band through over recovery Wide distribution structure.

Wherein, if one or more adjacent bandwidths distribution structures of check errors have verification Two bandwidth distribution structures adjacent before and after Zheng Que, then according to two the most adjacent bandwidth Temporal information in distribution structure, recover unidentified go out bandwidth distribution structure；Abandon recovery Unidentified go out one or more adjacent bandwidths distribution structures, and send idle frame, or, Respectively each in one or more bandwidth distribution structures of the check errors recovered is carried out Verification, and carry out data transmission in the case of check results is correct.

Wherein, if one or more adjacent bandwidths distribution structures of check errors do not have school Before and after testing correctly, (i.e. check errors is one or more for two adjacent bandwidth distribution structures Bandwidth distribution structure is the foremost of the continuous print bandwidth distribution structure distributing to above-mentioned ONU Or rearmost one or more), then the one or more adjacent bandwidths abandoning check errors are divided Distribution structure.

Uplink data transmission method provided above, is not limited only to GPON system, in necessity In the case of, apply also for other communication system.

Example one

Fig. 3 is the flow chart of present example one.As it is shown on figure 3, present example one is main Including following process (step S301-step S303):

Step S301: when OLT is assigned with several continuous print Allocation to an ONU During structure, OLT reserved field in the Flags territory of each Allocation structure Write numeral m, 0≤m≤127 in bit6-0, represent that OLT is at current Allocation M Allocation structure it is assigned with to this ONU after structure.

Step S303:ONU utilizes this information analysis to receive several continuous print Allocation structure, obtains the uplink total bandwidth belonging to this ONU, and ONU exists In in the time that one's own uplink total bandwidth is corresponding, always on laser instrument is to carry out Transmitting uplink data.

The three kinds of different situations lost below according to Allocation structure, specifically describe When using the method that this embodiment provides, the loss of Allocation structure is to uplink The impact caused.

(1) OLT is assigned with n (n >=1) individual continuous print Allocation to an ONU Structure, if the front x that first ONU receives (1≤x≤n) individual Allocation structure During loss, then ONU abandons front x Allocation structure.Because OLT is ONU First T-CONT corresponding for Allocation structure reserved Guard-Time and The time of PLO, so ONU is from (x+1)th (x+1≤n) individual Allocation structure StartTime start to transmit in current T-CONT corresponding for Allocation structure Data.

(2) if ONU is last x (1≤x≤n) the individual Allocation that receives When structure loses, then ONU abandons x last Allocation structure.

(3) if the centre that receives of ONU is (except first and last Allocation Any one or more Allocation structure beyond structure) continuous print x (1≤ X ＜ n-1, n ＞ 2) individual Allocation structure lose time, ONU will be at first The StartTime moment of Allocation structure starts to transmit this Allocation structure The corresponding data in T-CONT, and stop transmission in the StopTime moment, because ONU Can be according to bit6-0 position in the Flags territory of first the Allocation structure received M value determine also have m OLT to distribute to the Allocation of this ONU below Structure, so ONU is not turn off laser instrument.

Preferably, if one or more bandwidth distribution structures of check errors (loss) have Two bandwidth distribution structures adjacent before and after having verification correct (loss), then according to front The most adjacent temporal information in two bandwidth distribution structures, can recover check errors and (lose Lose) the temporal information of bandwidth distribution structure.

Such as, second Allocation structure loses, but the 3rd Allocation The data of structure are correct, and ONU can be according to first Allocation structure's The StartTime of StopTime and the 3rd Allocation structure recovers second StartTime and StopTime of Allocation structure.Preferably, is being recovered In the case of two Allocation structure, ONU can have two kinds of selections: the first Selection is that ONU abandons second Allocation structure, sends idle frame；The second Selection is that ONU judges whether the Alloc-ID in second Allocation structure belongs to This ONU, if it is, this ONU can be according to second Allocation recovered Second Allocation of StartTime and the StopTime normal transmission of structure The GEM frame of the T-CONT that structure is corresponding, if it does not, ONU can arbitrarily send The GEM frame of one T-CONT, it is also possible to send idle frame.

Such as, second Allocation structure and the 3rd Allocation structure All losing, but the data of the 4th Allocation structure are correct, ONU can root StopTime and the 4th Allocation according to first Allocation structure The StartTime of structure recovers the StartTime of second Allocation structure StopTime with the 3rd Allocation structure.Now ONU has two kinds of selections: The first selects to be that ONU abandons this two Allocation structure, sends idle frame； It is that ONU judges that the Alloc-ID in second Allocation structure is that the second selects No belong to this ONU, if it is, ONU can be according to second Allocation recovered The StopTime of the StartTime of structure and the 3rd Allocation structure is normal The GEM frame of second T-CONT corresponding for Allocation structure of transmission, if the The Alloc-ID of two Allocation structure is not belonging to this ONU, then ONU judges Whether the Alloc-ID in the 3rd Allocation structure belongs to this ONU, if it is, Then this ONU can be according to second the Allocation structure's recovered The StopTime normal transmission of StartTime and the 3rd Allocation structure the 3rd The GEM frame of the T-CONT that Allocation structure is corresponding, if it is not, then this ONU Can arbitrarily send the GEM frame of a T-CONT, it is also possible to send idle frame.Preferably Ground, in the case of losing two continuous print Allocation structure, selects for the second Selecting, ONU can also change the suitable of the Alloc-ID of two Allocation structure of verification Sequence.

Preferably for the continuous print Allocation in the middle of losing three or more than three The situation of structure, equally uses above-mentioned restoration methods, recovers the bandwidth of loss The temporal information of distribution structure.And after being resumed, use the first to select or the second choosing Select and process.

Example two

Fig. 4 is the flow chart of present example two.As shown in Figure 4, present example two is main Including following process (step S401-step S403):

Step S401: when OLT is assigned with several continuous print Allocation to an ONU During structure, OLT reserved field in the Flags territory of each Allocation structure Write numeral n, 1≤n≤7 in bit5-3, represent that OLT is assigned with n to this ONU Continuous print Allocation structure；OLT is at the Flags of each Allocation structure In reserved field bit2-0 in territory, write numeral 1,1≤l≤7, represent current Allocation Structure is the 1st the Allocation structure that OLT distributes to this ONU.

The information analysis that step S403:ONU is carried by the bit5-0 in Flags territory receives To several continuous print Allocation structure, obtain the uplink belonging to this ONU Total bandwidth, ONU in the time that one's own uplink total bandwidth is corresponding in one head straight for Open laser instrument to carry out transmitting uplink data.

The three kinds of different situations lost below according to Allocation structure, specifically describe When using this embodiment method, uplink is caused by the loss of Allocation structure Impact.

(1) OLT is assigned with n (n >=1) individual continuous print Allocation to an ONU Structure, if the front x that first ONU receives (1≤x≤n) individual Allocation structure During loss, then ONU abandons front x Allocation structure.Because OLT is ONU First T-CONT corresponding for Allocation structure reserved Guard-Time and The time of PLO, so ONU is from (x+1)th (x+1≤n) individual Allocation structure StartTime start to transmit in current T-CONT corresponding for Allocation structure Data.

(2) if ONU is last x (1≤x≤n) the individual Allocation that receives When structure loses, ONU abandons x last Allocation structure.

(3) if the centre that receives of ONU is (except first and last Allocation Any one or more Allocation structure beyond structure) continuous print x (1≤ X ＜ n-1, n ＞ 2) individual Allocation structure lose time, ONU will be at first The StartTime moment of Allocation structure starts to transmit this Allocation structure The corresponding data in T-CONT, and stop transmission in the StopTime moment, because ONU Can be according to bit5-0 position in the Flags territory of first the Allocation structure received The value of n and l (l≤n) determine also have (n-l) individual OLT to distribute to this ONU's below Allocation structure, so ONU is not turn off laser instrument.

Equally, according to the restoration methods described in example one, check errors can be recovered and (lose Lose) the temporal information of bandwidth distribution structure.

Such as, second Allocation structure loses, but the 3rd Allocation The data of structure are correct, and ONU can be according to first Allocation structure's The StartTime of StopTime and the 3rd Allocation structure recovers second StartTime and StopTime of Allocation structure.Preferably, is being recovered In the case of two Allocation structure, ONU can have two kinds of selections: the first Selection is that ONU abandons second Allocation structure, sends idle frame；The second Selection is that ONU judges whether the Alloc-ID in second Allocation structure belongs to This ONU, if it is, this ONU can be according to second Allocation recovered Second Allocation of StartTime and the StopTime normal transmission of structure The GEM frame of the T-CONT that structure is corresponding, if it does not, ONU can arbitrarily send The GEM frame of one T-CONT, it is also possible to send idle frame.

Such as, second Allocation structure and the 3rd Allocation structure Allocation structure all lose, but the number of the 4th Allocation structure According to correctly, ONU can be according to the StopTime of first Allocation structure and Four StartTime recover the StartTime and the 3rd of second Allocation structure The StopTime of individual Allocation structure.Now ONU has two kinds of selections: the first Selection is that ONU abandons this two Allocation structure, sends idle frame；The second Selection is that ONU judges whether the Alloc-ID in second Allocation structure belongs to This ONU, if it is, this ONU can be according to second Allocation recovered The StopTime of the StartTime of structure and the 3rd Allocation structure is normal The GEM frame of second T-CONT corresponding for Allocation structure of transmission, if it does not, Whether the Alloc-ID during then ONU judges the 3rd Allocation structure belongs to this ONU, if it is, this ONU can be according to second Allocation recovered The StopTime of the StartTime of structure and the 3rd Allocation structure is normal Transmit the GEM frame of the 3rd T-CONT corresponding for Allocation structure, if it does not, Then this ONU can arbitrarily send the GEM frame of a T-CONT, it is also possible to sends the free time Frame.Preferably, in the case of losing two continuous print Allocation structure, for The second selects, and ONU can also change two Allocation structure's of verification The order of Alloc-ID.

Preferably for the continuous print Allocation in the middle of losing three or more than three The situation of structure, equally uses above-mentioned restoration methods, recovers the bandwidth of loss The temporal information of distribution structure.And after being resumed, use the first to select or the second choosing Select and process.

Example three

Fig. 5 is the flow chart of present example three.As it is shown in figure 5, present example three is main Including following process (step S501-step S503):

Step S501: when OLT is assigned with several continuous print Allocation to an ONU During structure, OLT reserved field in the Flags territory of each Allocation structure Write numeral m, 0≤m≤127 in bit6-0, represent that OLT is at current Allocation M Allocation structure it is assigned with to this ONU before structure；

Step S503:ONU utilizes above-mentioned digital information to resolve and receives several continuous print Allocation structure, obtains the uplink total bandwidth belonging to this ONU, and ONU exists In in the time that one's own uplink total bandwidth is corresponding, always on laser instrument is to carry out Transmitting uplink data.

Below according to Allocation structure lose different situations illustrate employing this During the method that embodiment provides, uplink is caused by the loss of Allocation structure Impact.

(1) as front x (1≤x≤n) the individual Allocation structure that first ONU receives During loss, ONU abandons front x Allocation structure.This process may refer to reality Example one and example two.

(2) x (1≤x≤n) individual Allocation structure after ONU finally receives During loss, then ONU abandons rear x Allocation structure.This process may refer to Example one and example two.

(3) when the centre that ONU receives is (except first and last Allocation Any one or more Allocation structure beyond structure) continuous print x (1≤ X ＜ n-1, n ＞ 2) individual Allocation structure loss, ONU can be according to m1 value (OLT Bit6-0 in the Flags territory of first the Allocation structure distributing to this ONU The m value of position) and m2 value (OLT distributes to last Allocation of this ONU The m value of bit6-0 position in the Flags territory of structure) obtain OLT continuous dispensing to oneself Allocation structure number (difference of m2 Yu m1), according to this information ONU Resolve the Allocation structure received, it is possible to determine that the uplink of oneself always carries Width, ONU in the time that one's own uplink total bandwidth is corresponding in always on swash Light device.

Preferably, according to before and after the one or more bandwidth distribution structures lost adjacent two The temporal information of the individual bandwidth distribution structure do not lost, recovers check errors (loss) The processing procedure of temporal information of bandwidth distribution structure, may refer to example one and example two Description, here is omitted.

Example four

Fig. 6 is the flow chart of present example four.As shown in Figure 6, present example four is main Including following process (step S601-step S603):

Step S601: when OLT is assigned with several continuous print Allocation to an ONU During structure, OLT reserved field in the Flags territory of each Allocation structure Write numeral 1,1≤l≤7 in bit5-3, represent and go back before current Allocation structure There is the number of several Allocation structure belonging to this ONU；And OLT is often Write numeral m in reserved field bit2-0 in the Flags territory of individual Allocation structure, 1≤m≤7, represent the most several after current Allocation structure and belong to this ONU The number of Allocation structure；

The information analysis that step S603:ONU is provided by the bit5-0 in Flags territory receives To several continuous print Allocation structure, obtain the uplink belonging to this ONU Total bandwidth, ONU in the time that one's own uplink total bandwidth is corresponding in one head straight for Open laser instrument to carry out transmitting uplink data.

Below according to Allocation structure lose different situations illustrate employing this During embodiment method, the impact that uplink is caused by the loss of Allocation structure.

(1) as front x (1≤x≤n) the individual Allocation structure that first ONU receives During loss, ONU abandons front x Allocation structure.This processes before may refer to The example that face describes.

(2) x (1≤x≤n) individual Allocation structure after ONU finally receives During loss, ONU abandons rear x Allocation structure.This processes before may refer to The example that face describes.

(3) when the centre that ONU receives is (except first and last Allocation Any one or more Allocation structure beyond structure) continuous print x (1≤ X ＜ n-1, n ＞ 2) individual Allocation structure lose time, ONU will be at first The StartTime moment of Allocation structure starts to transmit this Allocation structure The corresponding data in T-CONT, and stop transmission in the StopTime moment, because ONU Can be according to bit2-0 position in the Flags territory of first the Allocation structure received The numerical value of m determine also have m OLT to distribute to the Allocation of this ONU below Structure, therefore ONU is not turn off laser instrument.

Preferably, according to before and after the one or more bandwidth distribution structures lost adjacent two The temporal information of the individual bandwidth distribution structure do not lost, recovers check errors (loss) The processing procedure of temporal information of bandwidth distribution structure, may refer to the description of previous examples, Here is omitted.

By examples detailed above one to example four, it can be deduced that, if ONU lost one Or multiple Allocation structure, ONU need not OLT reserve Guard-Time and The time of PLO, ONU can normally transmit Allocation structure couple not lost Data in the T-CONT answered, effectively limit one or more Allocation The coverage that structure loses.

Example five

Fig. 7 is the flow chart of present example five.As it is shown in fig. 7, present example five is main Including following process (step S701-step S703):

Step S701: when OLT is assigned with several continuous print Allocation to an ONU During structure, OLT reserved field in the Flags territory of each Allocation structure Write numeral 1 in bit0, represents that also having one before current Allocation structure belongs to together In the Allocation structure of this ONU, or, OLT is at each Allocation Write numeral 0 in reserved field bit0 in the Flags territory of structure, represents current The Allocation structure of this ONU is not belonged to before Allocation structure； OLT reserved field bit1 in the Flags territory of each Allocation structure writes number Word 1, represents that also having one after current Allocation structure belongs to this ONU's Allocation structure, or, OLT is at the Flags of each Allocation structure In reserved field bit1 in territory, write numeral 0, represents after current Allocation structure Do not belong to the Allocation structure of this ONU；

Step S703: when the Allocation structure number lost continuously is less than or equal to two Time individual, the information analysis that ONU is provided by the bit1-0 in Alloc-ID and Flags territory connects Receive several continuous print Allocation structure, obtain the up biography belonging to this ONU Defeated total bandwidth, ONU in the time that one's own uplink total bandwidth is corresponding in always Open laser instrument to carry out transmitting uplink data.

Below according to Allocation structure lose different situations illustrate employing this During the method that embodiment provides, uplink is caused by the loss of Allocation structure Impact.

(1) as front x (1≤x≤n) the individual Allocation structure that ONU receives During loss, ONU abandons front x Allocation structure.This processes before may refer to The example that face describes.

(2) x (1≤x≤n) individual Allocation structure after ONU finally receives During loss, ONU abandons rear x Allocation structure.This processes before may refer to The example that face describes.

(3) if ONU is xth (1 ＜ x ＜ n) the individual Allocation structure that receives During loss, before ONU normal transmission, (x-1) individual Allocation structure is corresponding Data in T-CONT, and at the StopTime of (x-1) individual Allocation structure Moment stops transmission, because ONU can be according to (x-1) the individual Allocation received In the Flags territory of structure, the value 1 of bit1 position determines also have an OLT to distribute to below The Allocation structure of this ONU, so ONU is not turn off laser instrument；If Xth and (x+1) (2 ＜ x+1 ＜ n) individual Allocation structure that ONU receives lose Miss the season, T-CONT corresponding for (x-1) individual Allocation structure before ONU normal transmission In data, and stop in the StopTime moment of (x-1) individual Allocation structure Only transmission.ONU is according to the Flags of (x-1) the individual Allocation structure received In territory, the value 1 of bit1 position determines also have an OLT to distribute to this ONU's below Allocation structure, ONU are according to (x+2) the individual Allocation received In the Flags territory of structure, the value 1 of bit0 position determines above also have an OLT to distribute to The Allocation structure, ONU of this ONU can draw three below information: first, (x-1) individual Allocation structure and x-th Allocation structure belongs to One ONU；Second, ONU can also judge (x+1) individual Allocation structure An ONU is belonged to (x+2) individual Allocation structure；3rd, according to (x-1) Alloc-ID and+2 Allocation of xth of individual Allocation structure The Alloc-ID of structure, ONU may determine that-1 Allocation structure of xth An ONU is belonged to+2 Allocation structure of xth.To sum up, ONU is permissible Learn that-1 Allocation structure of xth to+2 Allocation structure of xth is same Belong to an ONU.According to this information, ONU is transferring (x-1) individual Allocation After the information of the T-CONT that structure is corresponding, ONU is not turn off laser instrument.

Preferably, according to (x-th, wherein, 1 ＜ x ＜ n) lost or two (the X and (x+1)th, wherein, 1 ＜ x ＜ n-1) adjacent before and after bandwidth distribution structure two The temporal information of the bandwidth distribution structure do not lost, recovers the band of check errors (loss) The processing procedure of the temporal information of wide distribution structure, may refer to the description of previous examples, this Place repeats no more.

The method provided by this example, it can be deduced that, if ONU lost one or Two Allocation structure, ONU need not OLT and reserves Guard-Time and PLO Time, it is corresponding that ONU can normally transmit the Allocation structure not lost Data in T-CONT, effectively limit one or two Allocation structure and lose The coverage lost.Further, if the number of the Allocation structure lost continuously is little When equal to 2, merely with two of Flags reserved field, it is possible to by Allocation The coverage that structure loses has been restricted to lose band corresponding to Allocation structure In the range of width.

Example six

Fig. 8 is the flow chart of present example six.As shown in Figure 8, present example six is main Including following process (step S801-step S803):

Step S801: when OLT is assigned with several continuous print Allocation to an ONU During structure, OLT reserved field in the Flags territory of each Allocation structure In bit1-0, write numeral 0, represents there is one or zero after current Allocation structure The individual Allocation structure belonging to this ONU.Or, OLT is at each Allocation Write numeral 1 in reserved field bit1-0 in the Flags territory of structure, represents current Two Allocation belonging to this ONU are had after Allocation structure structure.Or, OLT guarantor in the Flags territory of each Allocation structure Stay write numeral 2 in the bit1-0 of territory, represent there are three after current Allocation structure Belong to the Allocation structure of this ONU.Or, OLT is at each Allocation Write numeral 3 in reserved field bit1-0 in the Flags territory of structure, represents current Have after Allocation structure more than or equal to four Allocation belonging to this ONU structure；

Step S803: when the Allocation structure number lost continuously is less than or equal to four Time individual, the information analysis that ONU is provided by the bit1-0 in Alloc-ID and Flags territory connects Receive several continuous print Allocation structure, obtain the up biography belonging to this ONU Defeated total bandwidth, ONU in the time that one's own uplink total bandwidth is corresponding in always Open laser instrument to carry out transmitting uplink data.

Below according to Allocation structure lose different situations illustrate employing this During the method that embodiment provides, uplink is caused by the loss of Allocation structure Impact.

(1) OLT is assigned with n (n >=1) individual continuous print Allocation to an ONU Structure, as front x (1≤x≤n) the individual Allocation structure that first ONU receives During loss, ONU abandons front x Allocation structure.This processes before may refer to The example that face describes.

(2) x (1≤x≤n) individual Allocation structure after ONU finally receives During loss, ONU abandons rear x Allocation structure.This processes before may refer to The example that face describes.

(3) illustrate separately below when n is more than or equal to 6 equal to 3,4,5 and n, ONU The situation that middle x (1≤x≤4) the individual Allocation structure received loses.

As n=3, if second Allocation structure that ONU receives loses, Data in first T-CONT corresponding for Allocation structure of ONU normal transmission, And stop transmission in the StopTime moment of first Allocation structure, because ONU can be according in the Flags territory of first the Allocation structure received The value 1 of bit1-0 position determines also have two OLT to distribute to the Allocation of this ONU below Structure, so ONU is not turn off laser instrument.

As n=4, when second Allocation structure that ONU receives loses, ONU Start to transmit this by the StartTime moment at first Allocation structure Data in the T-CONT that Allocation structure is corresponding, and in the StopTime moment Stop transmission, because ONU can be according to first the Allocation structure received Flags territory in the value 2 of bit1-0 position determine also have 3 OLT to distribute to this ONU below Allocation structure, so ONU is not turn off laser instrument.

As n=5, one of the centre that ONU receives, two or three Allocation When structure loses, ONU can be according to first the Allocation structure received Flags territory in the value 3 of bit1-0 position determine also have 4 OLT to distribute to this ONU below Allocation structure, so ONU is not turn off laser instrument.

When n >=6, one of the centre that ONU receives, two or three Allocation When structure loses, ONU can be according to first the Allocation structure received Flags territory in the value 3 of bit1-0 position determine also have 4 OLT to distribute to this ONU below Allocation structure, so ONU is not turn off laser instrument；When ONU receives Four Allocation structure in centre when losing, ONU normal transmission first Data in the T-CONT that Allocation structure is corresponding, and at first Allocation The StopTime moment of structure stops transmission.ONU is according to first received In the Flags territory of Allocation structure, the value 3 of bit1-0 position determines also have four below OLT distributes to the Allocation structure, ONU of this ONU according to first The Alloc-ID's of Allocation structure and the 6th Allocation structure Alloc-ID may determine that first Allocation structure and the 6th Allocation Structure belongs to an ONU.To sum up, ONU is appreciated that first Allocation Structure to the 6th Allocation structure belongs to an ONU.According to this letter Breath, ONU is transferring the letter of first T-CONT corresponding for Allocation structure After breath, ONU is not turn off laser instrument.

Preferably, according to one or two or three or four the bandwidth distribution structures lost The temporal information of the bandwidth distribution structure that the most adjacent two do not lose, recovers verification mistake The by mistake processing procedure of the temporal information of the bandwidth distribution structure of (loss), may refer to before The description of example, here is omitted.

Such as, (four are i.e. lost when second to the 5th Allocation structure loses Individual bandwidth distribution structure) time, ONU is according to first Allocation structure's The StartTime of StopTime and the 6th Allocation structure recovers second The StartTime's of Allocation structure and the 5th Allocation structure StopTime.Now ONU has two kinds of selections: the first selection is that ONU abandons these four The Allocation structure lost, sends idle frame；The second selects to be that ONU judges Whether the Alloc-ID in second Allocation structure belongs to this ONU, if it is, Then this ONU can be according to second the Allocation structure's recovered The StopTime normal transmission of StartTime and the 5th Allocation structure second The GEM frame of the T-CONT that Allocation structure is corresponding, if it is not, then ONU Judge whether the Alloc-ID in the 3rd Allocation structure belongs to this ONU, as Fruit is that then this ONU can be according to second the Allocation structure's recovered The StopTime normal transmission of StartTime and the 5th Allocation structure the 3rd The GEM frame of the T-CONT that Allocation structure is corresponding, if it is not, then ONU Judge whether the Alloc-ID in the 4th Allocation structure belongs to this ONU, as Fruit is that then this ONU can be according to second the Allocation structure's recovered The StopTime normal transmission of StartTime and the 5th Allocation structure the 4th The GEM frame of the T-CONT that Allocation structure is corresponding, if it is not, then ONU Judge whether the Alloc-ID in the 5th Allocation structure belongs to this ONU, as Fruit is that then this ONU can be according to second the Allocation structure's recovered The StopTime normal transmission of StartTime and the 5th Allocation structure the 5th The GEM frame of the T-CONT that Allocation structure is corresponding, if it does not, ONU is permissible Arbitrarily send the GEM frame of a T-CONT, it is also possible to send idle frame.Losing four During the second of individual continuous print Allocation structure selects, ONU can also change school Test the order of the Alloc-ID of four Allocation structure.

The method provided by the present embodiment, can be obtained, if ONU lost x continuously (x≤4) individual Allocation structure, ONU need not OLT and reserve Guard-Time With the time of PLO, ONU can normally transmit the Allocation structure not lost The corresponding data in T-CONT, effectively limit x Allocation structure The coverage lost.Further, little when the number of the Allocation structure lost continuously When equal to 4, merely with two of Flags reserved field, it is possible to by Allocation The coverage that structure loses is restricted to lose bandwidth corresponding to Allocation structure In the range of.

Example 7

Fig. 9 is the flow chart of present example seven.As it is shown in figure 9, present example seven is main Including following process (step S901-step S903):

Step S901: when OLT is assigned with several continuous print Allocation to an ONU During structure, OLT reserved field in the Flags territory of each Allocation structure In bit0, write numeral 0, represents have one or zero after current Allocation structure Belong to the Allocation structure of this ONU；Or, OLT is at each Allocation Write numeral 1 in reserved field bit0 in the Flags territory of structure, represents current Two Allocation belonging to this ONU are had after Allocation structure structure。

Step S903: when the Allocation structure number lost continuously is less than or equal to two Time individual, the information analysis that ONU is provided by the bit0 in Alloc-ID and Flags territory receives To several continuous print Allocation structure, obtain the uplink belonging to this ONU Total bandwidth, ONU in the time that one's own uplink total bandwidth is corresponding in one head straight for Open laser instrument to carry out transmitting uplink data.

Below according to Allocation structure lose different situations illustrate employing this During embodiment method, the impact that uplink is caused by the loss of Allocation structure.

(1) as front x (1≤x≤n) the individual Allocation structure that ONU receives During loss, ONU abandons front x Allocation structure.This processes before may refer to The example that face describes.

(2) x (1≤x≤n) individual Allocation structure after ONU finally receives During loss, ONU abandons rear x Allocation structure.This processes before may refer to The example that face describes.

(3) separately below explanation n equal to 3, n more than or equal to 4 time, during ONU receives Between x (1≤x≤2) individual Allocation structure lose situation.

As n=3, if second Allocation structure that ONU receives loses, Data in first T-CONT corresponding for Allocation structure of ONU normal transmission, And stop transmission in the StopTime moment of first Allocation structure, because ONU can be according to bit0 in the Flags territory of first the Allocation structure received The value 1 of position determines also have two OLT to distribute to the Allocation of this ONU below Structure, so ONU is not turn off laser instrument.

Preferably, according to adjacent before and after (second) the bandwidth distribution structure lost The temporal information of two bandwidth distribution structures do not lost, recover check errors (loss) The temporal information of bandwidth distribution structure, and carry out the process of respective handling, before may refer to The description of face example, here is omitted.

As n=4, if second and the 3rd Allocation that ONU receives When structure loses, first Allocation structure of ONU normal transmission is corresponding T-CONT in data, and at the StopTime of first Allocation structure Moment stops transmission.ONU is according to first the Allocation structure's received In Flags territory, the value 1 of bit0 position determines also have two OLT to distribute to this ONU's below Allocation structure, ONU are according to the Alloc-ID of first Allocation structure First is may determine that with the Alloc-ID of the 4th Allocation structure Allocation structure and the 4th Allocation structure belongs to an ONU. To sum up, ONU is appreciated that first Allocation structure to the 4th Allocation Structure belongs to an ONU.According to this information, ONU is transferring first After the information of the T-CONT that Allocation structure is corresponding, ONU is not turn off laser Device.

Preferably, according to two (second and the 3rd) the bandwidth distribution structures lost The temporal information of the bandwidth distribution structure that the most adjacent two do not lose, recovers verification mistake The temporal information of the bandwidth distribution structure of (loss) by mistake, and carry out the process of respective handling, May refer to the description of previous examples, here is omitted.

When n >=5, recover the temporal information of the bandwidth distribution structure lost, and carry out corresponding The process processed, may refer to the description of previous examples, and here is omitted.

Preferably, according to before and after one or two bandwidth distribution structure lost adjacent two The temporal information of the individual bandwidth distribution structure do not lost, recovers check errors (loss) The temporal information of bandwidth distribution structure, and carry out the process of respective handling, may refer to before The description of example, here is omitted.

The method provided by the present embodiment, if ONU lost x continuously, (x≤2) are individual Allocation structure, ONU need not OLT and reserve Guard-Time's and PLO Time, it is corresponding that ONU can normally transmit the Allocation structure not lost Data in T-CONT, effectively limit the shadow that x Allocation structure loses The scope of sound.Further, when the number of the Allocation structure lost continuously is less than or equal to 2 Time, merely with one of Flags reserved field, it is possible to Allocation structure is lost Coverage be restricted to lose in bandwidth range corresponding to Allocation structure.

Preferably, the technical method that the present invention provides is not limited only to above-mentioned embodiment, if Do not conflict, also include other embodiments.

Device embodiment

According to embodiments of the present invention, a kind of upstream bandwidth distributor is additionally provided.

Figure 10 is the structured flowchart of the transmitting uplink data device according to the embodiment of the present invention.Figure 11 is the structured flowchart of the transmitting uplink data device according to the preferred embodiment of the present invention.Such as figure Shown in 10, transmitting uplink data device according to embodiments of the present invention includes: reception unit 1, Maintenance unit 2, acquiring unit 3, combine further below accompanying drawing 11 to describe above-mentioned each Component.

Receive unit 1, for receiving the bandwidth distribution structure from upper layer network element, wherein, Bandwidth distribution structure carries incidence relation information and temporal information；

Maintenance unit 2, is connected to receive unit 1, is used for according to incidence relation information, if Put and keep data transmission state；

Acquiring unit 3, is connected to receive unit 2, is used for according to temporal information, in acquisition Row transmission total bandwidth.

Preferably, as shown in figure 11, acquiring unit 3 may further include: correction verification module 30, module 32, acquisition module 34, wherein, correction verification module 30 are determined, for bandwidth The data of distribution structure verify；Determine module 32, be connected to correction verification module 30, be used for In the case of check errors, determine one or more check errors according to incidence relation information Continuous bandwidth distribution structure position in continuous print bandwidth distribution structure；Acquisition module 34, it is connected to correction verification module 30 and determines module 32, for correct according to first verification Or the bandwidth distribution structure that can recover and last correct or verification after verification After temporal information in the bandwidth distribution structure that can recover, obtain uplink total bandwidth.

Preferably, as shown in figure 11, acquisition module 34 may include that recovery submodule 340, Before the verification of the one or more continuous bandwidth distribution structures according to check errors is correct The most adjacent temporal information in two bandwidth distribution structures, recover one of check errors or Multiple continuous bandwidth distribution structures.

Preferably, as shown in figure 11, acquisition module 34 can also include: processes submodule 342, for abandoning one or more continuous bandwidth distribution structures of check errors, wherein, school Error checking one or more continuous bandwidth distribution structures by mistake do not have identified before and after phase Two adjacent bandwidth distribution structures.

In specific implementation process, by above-mentioned reception unit 1, maintenance unit 2, obtain single Unit 3 realizes the scheme of transmitting uplink data, is referred to the specific descriptions in Fig. 2-and Fig. 9, Here is omitted.

Pass through above-described embodiment, it is provided that a kind of transmitting uplink data device, solve up During data transmission, upper layer network element is assigned with several continuous print Allocation to certain lower network element During structure, the loss of one of them (non-final one) Allocation structure can Can cause the problem that Allocation structure thereafter also loses, so effectively limit because of A loss or multiple thereafter is caused for losing one of them Allocation structure Allocation structure loses the coverage produced.

As it has been described above, the technical scheme provided by the embodiment of the present invention, lose at ONU In the case of one or more Allocation structure, ONU need not OLT and reserves The time of Guard-Time and PLO, ONU can normally transmit and not lose Data in the T-CONT that Allocation structure is corresponding, effectively limit one or The coverage that multiple Allocation structure lose.Further, if continuously lost The number of Allocation structure has in limited time, merely with the less bits of Flags reserved field, Just can be restricted to lose by the coverage that Allocation structure loses In the bandwidth range that Allocation structure is corresponding.

Obviously, those skilled in the art should be understood that the above-mentioned present invention each module or Each step can realize with general calculating device, and they can concentrate on single calculating On device, or it is distributed on the network that multiple calculating device is formed, alternatively, they Can realize with calculating the executable program code of device, it is thus possible to they are stored Performed by calculating device in the storage device, or it is integrated that they are fabricated to respectively Circuit module, or the multiple modules in them or step are fabricated to single integrated circuit mould Block realizes.So, the present invention is not restricted to the combination of any specific hardware and software.

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.All Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, Should be included within the scope of the present invention.

Claims (9)

1. a uplink bandwidth allocation method, it is characterised in that:

Lower network element receives the bandwidth distribution structure from upper layer network element, wherein, described Bandwidth distribution structure carries incidence relation information and temporal information；

Lower network element, according to described incidence relation information and described temporal information, safeguards number According to transmission state, and obtain uplink total bandwidth to carry out transmitting uplink data；

Wherein, obtain uplink total bandwidth to include to carry out transmitting uplink data:

The data of bandwidth distribution structure are verified；In the case of verification is correct, Use this bandwidth distribution structure to carry out transmitting uplink data；Situation at check errors Under, determine that the bandwidth of one or more check errors is divided according to described incidence relation information Distribution structure position in continuous print bandwidth distribution structure, abandons one of check errors Or multiple bandwidth distribution structure, or, recover the bandwidth distribution knot of whole check errors The temporal information of structure, and obtain uplink total bandwidth to enter according to described temporal information Row transmitting uplink data；

Wherein, the temporal information of the bandwidth distribution structure of the whole check errors of described recovery Including:

Current bandwidth distribution structure is identified, it is judged that whether front and back also has Verify correct bandwidth distribution structure；

If one or more adjacent bandwidths distribution structures of described check errors have Two bandwidth distribution structures adjacent before and after verification is correct, then according to described phase front and back The adjacent temporal information in two bandwidth distribution structures, recovers the band of whole check errors The temporal information of wide distribution structure, wherein, by adjacent later bandwidth distribution structure In start time information with in adjacent previous bandwidth distribution structure at the end of Between information difference as the bandwidth distribution structure of described whole check errors time believe Breath.

Method the most according to claim 1, it is characterised in that described incidence relation information Including at least one of:

Distribute to the sum of the continuous bandwidth distribution structure of lower network element and currently carry The index of wide distribution structure or position；

After described current bandwidth distribution structure, distribute to the company of described lower network element The number of continuous bandwidth distribution structure；

Before described current bandwidth distribution structure, distribute to the company of described lower network element The number of continuous bandwidth distribution structure；

Described current bandwidth distribution structure with previous or multiple bandwidth distribution structures is The no continuous bandwidth belonging to same lower network element；

Described current bandwidth distribution structure with later or multiple bandwidth distribution structure is The no continuous bandwidth belonging to same lower network element.

Method the most according to claim 1, it is characterised in that described temporal information includes: Use the beginning that the bandwidth distribution structure belonging to described temporal information carries out data transmission Time and end time.

Method the most according to claim 1, it is characterised in that one of check errors or Before and after the described verification that multiple adjacent bandwidths distribution structures have is correct adjacent two Individual bandwidth distribution structure includes the bandwidth distribution structure through over recovery.

Method the most according to claim 1, it is characterised in that abandon the one of check errors Individual or multiple bandwidth distribution structures include:

If one or more adjacent bandwidths distribution structures of check errors do not have school Two bandwidth distribution structures adjacent before and after testing correctly, then abandon described check errors One or more bandwidth distribution structures.

Method the most according to claim 1, it is characterised in that the whole verification of described recovery After the temporal information of the bandwidth distribution structure of mistake, described method also includes:

Abandon one or more bandwidth distribution structures of the described check errors of recovery, and Send idle frame, or, respectively to described check errors one or more recovered Each address identification message in bandwidth distribution structure verifies, in described address In the case of identification information belongs to described lower network element, carry out transmitting uplink data.

7. a upstream bandwidth distributor, it is characterised in that including:

Receive unit, for receiving the bandwidth distribution structure from upper layer network element, wherein, Described bandwidth distribution structure carries incidence relation information and temporal information；

Maintenance unit, for according to described incidence relation information, arranges and keeps data Transmission state；

Acquiring unit, for according to described temporal information, obtains uplink total bandwidth；

Wherein, described acquiring unit includes:

Correction verification module, for verifying the data of bandwidth distribution structure；

Determine module, in the case of check errors, according to described incidence relation Information determines that the continuous bandwidth distribution structure of one or more check errors is at continuous print Position in bandwidth distribution structure；

Acquisition module, can be extensive after or verification correct according to first verification Can recover after multiple bandwidth distribution structure and last correct or verification Temporal information in bandwidth distribution structure, obtains described uplink total bandwidth；

Wherein, described acquiring unit, the bandwidth being additionally operable to recover whole check errors is divided The temporal information of distribution structure, including: current bandwidth distribution structure is identified, sentences Disconnected front and back the most also verifies correct bandwidth distribution structure；If described school Before and after error checking one or more adjacent bandwidths distribution structures by mistake have verification correctly Two adjacent bandwidth distribution structures, then divide according to described two the most adjacent bandwidth Temporal information in distribution structure, recover whole check errors bandwidth distribution structure time Between information, wherein, by adjacent later bandwidth distribution structure initial time believe Cease the difference conduct with the end time information in adjacent previous bandwidth distribution structure The temporal information of the bandwidth distribution structure of described whole check errors.

Device the most according to claim 7, it is characterised in that described acquisition module includes:

Recover submodule, for dividing according to one or more continuous bandwidth of check errors The time in two bandwidth distribution structures adjacent before and after the verification correctly of distribution structure Information, recovers one or more continuous bandwidth distribution structures of described check errors.

Device the most according to claim 7, it is characterised in that described acquisition module includes:

Process submodule, divide for abandoning one or more continuous bandwidth of check errors Distribution structure, wherein, one or more continuous bandwidth distribution structures of described check errors Not there are two bandwidth distribution structures adjacent before and after having identified.