CN102291632A - Bandwidth sharing method, device and system - Google Patents

Abstract

The invention discloses a bandwidth sharing method, device and system. The bandwidth sharing method comprises the following steps: an ONU (optical network unit) receives a message frame, wherein the message frame comprises a shared allocation identifier, information of the shared bandwidth and frame count; the shared allocation identifier represents that the shared bandwidth is shared by N ONUs; the frame count indicates a designated ONU using the shared bandwidth; and N is an integer greater than 1; whether the ONU is the designed ONU is judged by the ONU per se; and if so, the shared bandwidth is used to send a response frame. By implementing the embodiment of the invention, the shared bandwidth can be allocated to multiple ONUs by use of the shared allocation identifier so as to save bandwidth.

Description

The methods, devices and systems of shared bandwidth

Technical field

The present invention relates to the data communication field, specifically, relate to the methods, devices and systems of shared bandwidth.

Background technology

Telecommunication service becomes increasingly abundant, and the user is also increasing to the demand of bandwidth, operator will Fiber to the home (FTTH, Fiber To The Home) as the main selection of Access Network.

Optical line terminal (OLT, Optic Line Terminal) is called descending to optical network unit (ONU, Optic Network Unit), ONU is called up to OLT, down direction broadcasting, up direction clean culture.

Put the network configuration of multiple spot based on gigabit passive optical network (GPON, Gigabit-Capable PON), an OLT communicate by letter with a plurality of ONU simultaneously, and in order to distinguish different ONU, needs be provided with the sign of a unique ONU-ID as ONU to each ONU.

Because a plurality of ONU send data to OLT simultaneously, may cause signal conflict, influence the normal reception of OLT, so OLT need coordinate the transmission of ONU by the mode of timeslice mandate, guarantee that some time periods only allow ONU to send data, can effectively avoid conflict like this.OLT timeslice authorization object is the allocation units on the ONU, uses distribution marker (Alloc-ID, Allocation Identifier) sign.Alloc-ID is that the overall situation is unique, value 0～253 is used to identify ONU as first Alloc-ID of ONU default allocation, can carry physical layer operations and safeguard (PLOAM, Physical Layer OAM) stream, ONT management control interface (OMCI, ONT Management and Control Interface) stream, customer traffic (optional), value 254 activates ID for ONU, be used for finding unknown ONU by request serial number, value 255 is used for the downlink broadcast address, with the last row address of the ONU of unallocated ONU ID, value 256～4095 is distributed to the allocation units among the ONU.Allocated bandwidth is distributed according to Alloc-ID, bandwidth mapping (the BWmap that the OLT end issues, Bandwidth map) allocated bandwidth of carrying is behind ONU, and ONU judges according to the Alloc-ID match condition of this locality whether this bandwidth belongs to this ONU, and the Alloc-ID of all ONU has nothing in common with each other.

In ONU activation, GPON uses 254 (XG-PON uses 1023) as sequence number (SN, Serial Number) Alloc-ID of the up transmit frame of Fa Xianing, all ONU that are in the SN discovery stage can use this Alloc-ID, (XG-PON is cancelled in random delay a period of time (0～48 microsecond) and preequalization time delay, start-time among the BWMAP that its function is found by SN replaces) after, SN PLOAM message informing OLT directly sent.Here, ALLOC-ID 254 is used by all undiscovered ONU, and the possibility of certain conflict is arranged, and 254 (XG-PON is 1023) do not re-use in all the other stages only as SN discovery Alloc-ID.

OMCI is a kind of configuration transmission channel that defines in the GPON standard.OMCI is the service management passage of GPON/XG-PON, and OMCI is the master-slave mode management agreement, and OLT is a main equipment, and ONT is a slave unit, a plurality of ONT equipment that OLT connects below by OMCI passage control OLT.

Dynamic Bandwidth Allocation (DBA, Dynamic Bandwidth Assignment) is a kind of mechanism that can finish in the time interval of microsecond or Millisecond the dynamic assignment of upstream bandwidth.GPON DBA is a management object with transmission container (T-CONT, Transmission Container), and T-CONT dynamically receives the mandate that OLT issues, and is used to manage the upstream bandwidth distribution of PON system transmissions convergence-level, improves the upstream bandwidth in the PON system.

The bandwidth types of T-CONT is divided into fixed-bandwidth (FB, Fixed Bandwidth), guarantees bandwidth (AB, Assured Bandwidth), non-assured bandwidth (NAB, Non-Assured Bandwidth), best endeavors bandwidth (BE, Best Effort), maximum bandwidth (Maximum).

In actual applications, each ONU wants one OMCI, and OMCI is packaged into G-PON Encapsulation Mode (GEM, GPON Encapsulation Method) frame format, and the GEM frame is loaded among the T-CONT.In agreement OMCI by one independently T-CONT bear (also can share a T-CONT) with service message, and the bandwidth types of the T-CONT that takies of OMCI is FB.The OMCI bandwidth is obsolete at ordinary times, but because the time delay requirement of OMCI, the upper limit that must guarantee the response time of OMCI is (less than the 1s) that can expect, if use the on-fixed bandwidth, just may the promptness of OMCI be impacted.

If OMCI takies fixed-bandwidth, each ONU will take a fixed-bandwidth and give OMCI, and this bandwidth is idle when not having OMCI message, and generally ONU is after configuration restore, and the OMCI bandwidth all is not use.

The OMCI occupied bandwidth can cause the waste of upstream bandwidth, supposes an OMCI occupied bandwidth 5M, and the bandwidth that takies of 64 ONU is 320M so, bandwidth waste is very big, in the up PON mouth of 1G, has wasted 30% bandwidth and has been used for management.

Summary of the invention

Embodiments of the invention can solve OMCI and take the problem that fixed-bandwidth causes bandwidth waste.

On the one hand, embodiments of the invention provide a kind of method of shared bandwidth, comprising:

Optical network unit ONU receives a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, described frame count has been indicated an appointment ONU who uses described shared bandwidth, wherein, N is the integer greater than 1;

Judge whether oneself is described appointment ONU;

If use described shared bandwidth to send response frame.

On the other hand, embodiments of the invention provide a kind of device of shared bandwidth, comprising:

Receiving element, be used to receive a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, described frame count has been indicated an appointment optical network unit ONU of using described shared bandwidth, wherein, N is the integer greater than 1;

Judging unit is used to judge whether oneself is described appointment ONU, and the output judged result;

Transmitting element is used for using when being described shared bandwidth to send response frame in described judged result.

On the other hand, embodiments of the invention provide a kind of system of shared bandwidth, comprising:

An optical line terminal OLT, N optical network unit ONU, wherein, N is the integer greater than 1;

Described OLT sends a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, and described frame count has been indicated an appointment ONU who uses described shared bandwidth;

Each ONU of a described N ONU receives described message frame, judges whether oneself is described appointment ONU, if use described shared bandwidth to send response frame.

Described OLT receives response frame, and described response frame takies described shared bandwidth, and is sent by described appointment ONU.

By implementing embodiments of the invention, can utilize shared distribution marker is that a plurality of ONU distribute shared bandwidth, thereby realizes the saving of bandwidth.

Description of drawings

In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done an introduction simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the shared bandwidth method flow schematic diagram of the embodiment of the invention;

Fig. 2 is the shared bandwidth method flow schematic diagram of the embodiment of the invention;

Fig. 3 is the shared bandwidth device schematic diagram of the embodiment of the invention;

Fig. 4 is the shared bandwidth device schematic diagram of the embodiment of the invention;

Fig. 5 is the shared bandwidth system schematic diagram of the embodiment of the invention;

Fig. 6 is the shared bandwidth system schematic diagram of the embodiment of the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

Embodiments of the invention provide a kind of method of shared bandwidth, shown among Fig. 1 100, comprising:

101:ONU receives a message frame from OLT, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, described frame count has been indicated an appointment optical network unit ONU of using described shared bandwidth, wherein, N is the integer greater than 1;

103: judge whether oneself is described appointment ONU;

105: if use described shared bandwidth to send response frame to OLT.

Message frame in 101 can be broadcast frame.

Further, 103 describedly judge whether oneself is that described appointment ONU can be specially: judge whether local identifier equals the remainder of described frame count divided by described N gained, perhaps, judge whether local mask is identical with the Q-character of described frame count.

Judge if equate, oneself to be described appointment ONU when whether local identifier equals described frame count divided by the remainder of described N gained, if not etc., then be not, described local identifier is more than or equal to 0 and less than the integer of described N, and is different from the identifier of other ONU among the described N ONU.When adopting the mode of this distribution ONU identifier, can determine each ONU that uses shared bandwidth divided by the mode that N obtains remainder, use shared bandwidth thereby avoid conflict by the judgment frame counting.Described N can obtain by the mode that receives second notification message from OLT, comprises described N in this second notification message.This second notification message can be the PLOAM message that receives from OLT, also can be the OMCI management entity message that receives from OLT.After receiving this message, just can use ONU total distribution marker Alloc-ID.In the GPON system, the PLOAM message of use can adopt form as shown in table 1, in the XG-PON system, can adopt form as shown in table 2, and OMCI management entity message can adopt form as shown in table 3.Current online ONU quantity described in the table is the quantity N that uses the ONU of shared bandwidth in 101.Certain ONU can judge whether this message frame comprises described shared distribution marker, if then this message frame is exactly the message frame described in 101 after receiving arbitrary message frame.The frame count that uses this message frame judges divided by N whether the remainder of gained equals its local identifier, if equate, this ONU just uses this shared bandwidth.Adopt this remainder matching condition, the identifier of N ONU of shared bandwidth can be distributed since 0, up to N-1.Like this can be so that this N ONU has roughly the same chance to use shared bandwidth.Because frame count has only 1 divided by the remainder of N gained, can guarantee to have only maximum 1 ONU can use shared bandwidth, has avoided conflict at every turn.

Table 1

Byte	Content	Describe
			1	11111111	Broadcasting
2	11101101	Type of message ID: current online ONU quantity PLOAM message
			3～6	...	Current online ONU quantity
5-12	Keep	Keep

Table 2

Table 3

The management entity name	Expand current online ONU quantity notice
		The administrative class offset	412
Entity ID	OMCI entity ID (2 byte)
		ONU?NUM	4 bytes are notified current online ONU quantity

Judge when whether local mask is identical with the Q-character of described frame count, if identical, then oneself be described appointment ONU, if inequality, then not described local mask is different from the mask of other ONU of described a plurality of ONU.Described mask also can obtain by the mode that receives second notification message, comprises described mask in this second notification message.This second notification message can be the OMCI management entity message that receives from OLT.After receiving this message, ONU just can use total distribution marker.For example, OLT can be according to the ONU number of using shared bandwidth, and at least one value of the Q-character of the frame count of the operable frame of each ONU is issued by OMCI management entity message as mask.For example, as Q-character, the values that this 10bit Q-character is different are distributed to each ONU as mask with 10 bit of frame count afterbody, and each ONU distributes a mask.ONU judges whether the mask in second notification message of 10 of afterbodys and reception of frame count of the broadcast frame that contains shared distribution marker receive is identical, if identical, just can take the shared bandwidth of distribution.The Q-character of frame count can be all inequality with the mask of arbitrary ONU, but can not be all identical with the mask of two ONU correspondences.This second notification message can be the shared bandwidth management entity message of OMCI, and this shared bandwidth management entity message can adopt form as shown in table 4.In addition, local mask also can obtain by pre-configured mode, for example extracts described local mask from configuration data.

Mutual by second notification message, ONU can obtain numerical value of N or mask, thereby can use definite algorithm to judge whether to use this shared bandwidth.

Table 4

Further, the method shown in 100 may further include: receive first notification message and extract described shared distribution marker from described first notification message.Mutual by this first notification message, ONU can be known this shared distribution marker, thereby identifies the shared bandwidth of distribution.This first notification message can be the descending PLOAM broadcast of coming from OLT, also can be the shared bandwidth management entity message of OMCI.In the GPON system, the form of this PLOAM message can be as shown in table 5, and in the XG-PON system, the form of this PLOAM message can be as shown in table 6, and the form of the shared bandwidth management entity message of this OMCI can be as shown in table 7.In addition, ONU also can obtain this shared distribution marker by pre-configured mode, for example extracts described shared distribution marker from configuration data.

Table 5

Table 6

Table 7

The management entity name	Expand shared distribution marker entity message
		The administrative class offset	411
Entity ID	OMCI entity ID (2 byte)
		Alloc-ID	The Alloc-ID (4 byte) that all ONU are shared

The bandwidth of using this shared distribution marker to distribute can be the shared upgoing O MCI bandwidth of a plurality of ONU.When thinking, certain ONU,, then do not send this T-CONT that oneself can take current uplink frame if do not have if there is the OMCI uplink message just to send.

The bandwidth that a plurality of ONU adopt shared this shared distribution marker of time-multiplexed mode to distribute.If this shared bandwidth is a fixed-bandwidth, then each ONU has an opportunity to use this fixed-bandwidth.If this shared bandwidth is not a fixed-bandwidth, if having only ONU to use at every turn, in general, a plurality of ONU can be shared should shared distribution marker distribution bandwidth.

By the foregoing description as can be seen, by adopting shared distribution marker, a plurality of ONU can identify the shared bandwidth of distribution, which ONU the frame count of message frame has indicated to use this shared bandwidth to send uplink frame, and each ONU judges whether oneself is that ONU that can use shared bandwidth.Whether equal local identifier by judgment frame counting divided by the remainder of the total gained of the ONU of shared bandwidth, perhaps whether the Q-character of judgment frame counting is identical with the mask of self, determine whether to use this shared bandwidth, and the shared bandwidth of use that avoids conflict.By using shared bandwidth, can reduce taking of bandwidth.

Embodiments of the invention provide a kind of method of shared bandwidth, shown among Fig. 2 200, comprising:

201:OLT sends a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, described frame count has been indicated an appointment optical network unit ONU of using described shared bandwidth, wherein, N is the integer greater than 1;

202:OLT receives response frame, and described response frame takies described shared bandwidth, and is sent by described appointment ONU.

Further, the identifier of the appointment ONU described in 201 equals the remainder of described frame count divided by described N gained.OLT can be respectively described N ONU and distribute different identifiers, and described identifier is more than or equal to 0 and less than the integer of described N.OLT sends second notification message to a described N ONU, comprises described N in described second notification message.By being that N ONU distributes more than or equal to 0 and less than the integer identifiers of N, and should notify each ONU by sum N, can so that whether each ONU equals the shared bandwidth that local identifier determines whether to use distribution by the judgment frame counting divided by the remainder of N.If equate, just use, if do not wait, just can not use.Take this to guarantee that each ONU can not conflict uses shared bandwidth.The form of this second message can be shown in table 1 or table 2 or table 3.

Appointment ONU described in 201 can also be the identical ONU of Q-character of its mask and described frame count.OLT is respectively described N ONU and distributes different masks, and sends second notification message to each ONU of a described N ONU, comprises the mask of described each ONU in described second notification message.By distributing different masks and notify ONU its mask, can be so that ONU utilize this mask to judge whether to use the shared bandwidth of distribution, thus avoid conflict.This second notification message can be as shown in table 4.

Further, OLT can send first notification message to a described N ONU, to notify each ONU shared distribution marker.This first notification message can be the descending PLOAM message shown in table 5 or table 6, also can be OMCI management entity message as shown in table 7.

OLT can distribute a T-CONT as the shared upgoing O MCI bandwidth of all ONU, the Alloc-ID overall situation among this T-CONT BW map is unique, all ONU can discern, and the bandwidth that this Alloc-ID distributes is that a plurality of ONU are shared, therefore can reduce OMCI taking bandwidth.OLT can determine in available Alloc-ID that unique being used for distributes the Alloc-ID of shared bandwidth to an Alloc-ID as the overall situation.The shared bandwidth of being distributed can be the fixed-bandwidth type, guarantee bandwidth types or other suitable types, can guarantee in conserve bandwidth that like this OMCI management entity message satisfies the requirement of promptness.

By the foregoing description as can be seen, by using shared distribution marker, OLT can distribute shared bandwidth for a plurality of ONU, and a plurality of ONU adopt time-multiplexed mode to use shared bandwidth, thereby reduces taking of bandwidth.The bandwidth that OLT uses shared distribution marker indication to be distributed is shared bandwidth, and this shared distribution marker is distributed to each ONU, rather than which ONU.Each ONU sees the bandwidth that this shared distribution marker distributes, and can adopt certain algorithm to determine whether to use this bandwidth.Can be by using the each ONU that uses shared bandwidth of frame count indication, no matter be to determine each ONU that uses shared bandwidth divided by the remainder of the quantity gained of the ONU that uses shared bandwidth by frame count, still determine each ONU that uses shared bandwidth according to the value of the Q-character of frame count, all guarantee to have only maximum ONU to use shared bandwidth at every turn, avoided conflict.

Embodiments of the invention provide a kind of device of shared bandwidth, and this device can be realized in ONU, shown among Fig. 3 300, comprising:

Receiving element 301, be used to receive a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, described frame count has been indicated an appointment optical network unit ONU of using described shared bandwidth, wherein, N is the integer greater than 1;

Judging unit 303 is used to judge whether oneself is described appointment ONU, and the output judged result;

Transmitting element 305 is used for using when being described shared bandwidth to send response frame in described judged result.

Particularly, 303 are used to judge whether local identifier equals the remainder of described frame count divided by described N gained, if equate, oneself be described appointment ONU, if not etc., then be not, described local identifier is more than or equal to 0 and less than the integer of described N, and is different from the identifier of other ONU among the described N ONU.

303 can be used for also judging whether local mask is identical with the Q-character of described frame count, if identical, oneself be described appointment ONU, if inequality, then not described local mask is different from the mask of other ONU of described a plurality of ONU.

Further, device 300 can also comprise the second notification message receiving element 307, is used to receive second notification message, and described second notification message comprises described N or comprises described local mask.

Further, device 300 can also comprise the first notification message receiving element 309, is used to receive first notification message, and extracts described shared distribution marker from described first notification message.

Embodiments of the invention provide a kind of device of shared bandwidth, and this device can be realized in OLT, shown among Fig. 4 400, comprising:

Transmitting element 401, be used to send a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, described frame count has been indicated an appointment optical network unit ONU of using described shared bandwidth, wherein, N is the integer greater than 1;

Receiving element 403 is used to receive response frame, and described response frame takies described shared bandwidth, and is sent by described appointment ONU.

Particularly, the identifier of described appointment ONU equals the remainder of described frame count divided by described N gained, perhaps specifies the mask of ONU identical with the Q-character of described frame count.

Further, device 400 can comprise the second notification message transmitting element 405, be used to be respectively described N ONU and distribute different identifiers, described identifier is more than or equal to 0 and less than the integer of described N, and send second notification message to a described N ONU, comprise described N in described second notification message.405 also can be used for being respectively described N ONU distributes different masks, and sends second notification message to each ONU of a described N ONU, comprises the mask of described each ONU in described second notification message.

Further, device 400 can also comprise the first notification message transmitting element 407, is used for sending first notification message that comprises described shared distribution marker to described N ONU.

Embodiments of the invention provide a kind of system of shared bandwidth, as shown in Figure 5, comprising:

An optical line terminal OLT, N optical network unit ONU, wherein, N is the integer greater than 1;

Described OLT sends a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, the information of described shared bandwidth is by described shared distribution marker indication, described shared bandwidth is shared by a described N ONU, and described frame count has been indicated an appointment ONU who uses described shared bandwidth;

Each ONU of a described N ONU receives described message frame, judges whether oneself is described appointment ONU, if use described shared bandwidth to send response frame.

Described OLT receives response frame, and described response frame takies described shared bandwidth, and is sent by described appointment ONU.

Further, described OLT is respectively described N ONU and distributes different identifiers, and described identifier is more than or equal to 0 and less than the integer of described N.As shown in Figure 6, described OLT sends second notification message to a described N ONU, comprises described N in described second notification message; Each ONU among the described N ONU receives described second notification message; Described judge oneself whether be described appointment ONU specifically: judge whether local identifier equals the remainder of described frame count divided by described N, if equate that then described oneself is described appointment ONU, if do not wait, then is not.Because frame count has only one divided by the remainder of N, so use the ONU of same shared bandwidth to have only 1 at most at every turn.When all use all ONU of this shared bandwidth all to reach the standard grade, all there is 1 ONU to use general bandwidth at every turn, when having only part to reach the standard grade, then may there be ONU to use this shared bandwidth.No matter the situation that two ONU conflicts are used can not take place in which kind of situation.

Further, described OLT can be respectively described N the different mask of ONU distribution; Described OLT sends second notification message in a described N ONU, comprise the mask of described each ONU in described second notification message; Each ONU among the described N ONU receives described second notification message; Describedly judge whether oneself is that described appointment ONU is specially: judge whether local mask is identical with the Q-character of described frame count, if identical, then described oneself is described appointment ONU, if inequality, then is not.When distributing mask, OLT distributes different masks for each ONU.The number of the value of the Q-character of frame count may be more than the number of mask, can take place can't with the situation of certain ONU identifier match, but the situation of same mask and a plurality of ONU identifier match can not take place, thereby avoid conflict.

Further, OLT can send first notification message to each ONU among N the ONU, comprises shared distribution marker in this first notification message.After each ONU receives this first notification message, extract this shared distribution marker.After receiving the broadcast frame that comprises described shared distribution marker as each ONU, can identify the bandwidth that this shared distribution marker distributes is shared bandwidth, thereby can time-multiplexed mode use shared bandwidth.

By the foregoing description as can be seen, by using shared distribution marker, OLT can distribute shared bandwidth for a plurality of ONU, thereby reduces taking of bandwidth.The bandwidth that OLT uses shared distribution marker indication to be distributed is shared bandwidth, and this shared distribution marker is distributed to each ONU, rather than which ONU.Each ONU sees the bandwidth that this shared distribution marker distributes, and can adopt certain algorithm to determine whether to use this bandwidth.Can be by using the each ONU that uses shared bandwidth of frame count indication, no matter be to determine each ONU that uses shared bandwidth divided by the remainder of the quantity gained of the ONU that uses shared bandwidth by frame count, still determine each ONU that uses shared bandwidth according to the value of the Q-character of frame count, all guarantee to have only maximum ONU to use shared bandwidth at every turn, avoided conflict.When shared bandwidth is fixed-bandwidth (or guaranteeing bandwidth), adopt embodiments of the invention can save up fixed-bandwidth (or guaranteeing bandwidth), fixed-bandwidth is with respect to other bandwidth simultaneously, and the OMCI time-delay is fixing, can expect.

Those skilled in the art are applied to embodiments of the invention fields such as GPON, XG-PON, EPON/10EPON easily, also can be applied to the field that other use shared bandwidth.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (10)

1. the method for a shared bandwidth is characterized in that, comprising:

Optical network unit ONU receives a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, described frame count has been indicated an appointment ONU who uses described shared bandwidth, wherein, N is the integer greater than 1;

Judge whether oneself is described appointment ONU;

If use described shared bandwidth to send response frame.

2. the method for claim 1 is characterized in that, describedly judges whether oneself is that described appointment ONU specifically comprises:

Judging whether local identifier equals the remainder of described frame count divided by described N gained, if equate, then oneself is described appointment ONU, if not etc., then be not, described local identifier is more than or equal to 0 and less than the integer of described N, and is different from the identifier of other ONU among the described N ONU.

3. method as claimed in claim 2 is characterized in that, further comprises:

Receive second notification message, comprise described N in described second notification message.

4. the method for claim 1 is characterized in that, describedly judges whether oneself is that described appointment ONU specifically comprises:

Judge whether local mask is identical with the Q-character of described frame count, if identical, then oneself be described appointment ONU, if inequality, then not described local mask is different from the mask of other ONU of a described N ONU.

5. method as claimed in claim 4 is characterized in that, further comprises:

Receive second notification message, described second notification message comprises described local mask.

6. the method for claim 1 is characterized in that, further comprises:

Receive first notification message and from described first notification message, extract described shared distribution marker; Perhaps, from configuration data, extract described shared distribution marker.

7. the device of a shared bandwidth is characterized in that, comprising:

Receiving element, be used to receive a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, described frame count has been indicated an appointment ONU who uses described shared bandwidth, wherein, N is the integer greater than 1;

Judging unit is used to judge whether oneself is described appointment ONU, and the output judged result;

Transmitting element is used for using when being described shared bandwidth to send response frame in judged result.

8. the system of a shared bandwidth is characterized in that, comprising:

An optical line terminal OLT, N optical network unit ONU, wherein, N is the integer greater than 1;

Described OLT sends a message frame, described message frame comprises the information and the frame count of shared distribution marker, shared bandwidth, described shared distribution marker represents that described shared bandwidth is shared by N ONU, and described frame count has been indicated an appointment ONU who uses described shared bandwidth;

Each ONU of a described N ONU receives described message frame, judges whether oneself is described appointment ONU, if use described shared bandwidth to send response frame.

Described OLT receives response frame, and described response frame takies described shared bandwidth, and is sent by described appointment ONU.

9. system as claimed in claim 8 is characterized in that, further comprises:

Described OLT is respectively described N ONU and distributes different identifiers, and described identifier is more than or equal to 0 and less than the integer of described N;

Described OLT sends second notification message to a described N ONU, comprises described N in described second notification message;

Each ONU among the described N ONU receives described second notification message;

Describedly judge whether oneself is that described appointment ONU specifically comprises:

Judging whether local identifier equals the remainder of described frame count divided by described N, if equate, then oneself is described appointment ONU, if do not wait, then is not.

10. system as claimed in claim 9 is characterized in that, further comprises:

Described OLT is respectively described N ONU and distributes different masks;

Described OLT sends second notification message in a described N ONU, comprise the mask of described each ONU in described second notification message;

Each ONU among the described N ONU receives described second notification message;

Describedly judge whether oneself is that described appointment ONU specifically comprises:

Judge whether local mask is identical with the Q-character of described frame count, if identical, then oneself be described appointment ONU, if inequality, then be not.

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