JP2000312208A - Band setting method - Google Patents

Abstract

(57) [Problem] To assign a bandwidth allocation value to a communication system in which a plurality of information sources such as ATM-PONs share a transmission line and have a function of dynamically allocating and controlling a shared bandwidth according to the amount of information. This is the setting method. A communication management system having a relationship between a manager and an agent for managing a controlled device (OLT) is provided, and the agent has a remote control device (ONU).
For each, an individual band management object that manages an allocated individual band, a shared band management object that manages a shared band for each port, and a band setting for these various band management objects based on a band setting instruction from a manager. Perform, and calculate / comparison / judgment of the bandwidth, and deploy the mediation object that notifies the manager of the result. The bandwidth management object divides and manages the individual fixed bandwidth and the individual maximum shared bandwidth according to the type of ATM connection or the type of communication service class (QOS).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication management system controlled by a relationship between a manager and an agent, comprising: a controlled device controlled by the communication management system; a plurality of subordinate remote control devices; A transmission line shared for data transmission from the remote control device to the controlled device, and monitors the status of traffic input to the remote control device, and allows each remote control device to transmit data to the controlled device. The present invention relates to a band setting method for setting a band allocation value using a plurality of management objects for managing a band provided in an agent in a communication system having a function of dynamically controlling a band to be used.

As a communication system sharing this transmission band, for example, an optical network unit (hereinafter referred to as "OLT:
Optical-Line Terminator) and a plurality of user-side optical terminators (hereinafter referred to as “ONU: Optical Network Unit”), which perform point-to-multipoint ATM-PON (Asynchronous Transfer) for bidirectional communication.
Mode-Passive Optical Network).

[0003]

2. Description of the Related Art In an ATM-PON system, O
The LT and its subordinate ONUs are connected to a passive optical network (Passive Opt.
ical Network: PON) and each ONU
The upstream optical signal in the form of an ATM cell is multiplexed into one optical transmission line by an optical coupler and transmitted to the network side.
At this time, control is performed so as not to exceed the band of the optical transmission line. The bandwidth on the PON section is fixedly assigned to each ONU by OLT polling. But,
With this method, bursty traffic cannot be accommodated efficiently. Therefore, a band (fixed band) in which a band on the PON is fixedly assigned to each ONU and all ON
A PON dynamic band allocation function that divides the band into a band shared by U (shared band) and dynamically allocates the shared band to necessary ONUs based on the amount of data generated on the ONU side has been proposed as follows. . (JP-A-10-2
FIG. 13 is a diagram showing the principle of the PON dynamic band allocation function, and FIG. 14 is an explanatory diagram showing how the band allocated to each ONU changes.

In FIG. 13, a plurality of ONUs 1 (other OUNs are not shown) and one OLT 2 are connected to one upstream transmission line 3 having an optical coupler 31 by using polling (transmission permission signal). Transmission is performed sharing the division. ONU 1 has a transmission permission waiting buffer that temporarily holds data to be transmitted.
It has 11,12. As shown in FIG. 10, fixed bandwidths W1 to W3 (FIG. 14) that can be used unconditionally by specifying a time slot for cell transmission are set in advance for each ONU based on contract conditions for the ONU. The data stored in the real-time data buffer 11 can be constantly transmitted using this band. One transmission line is shared (connected to one PON) to the remaining band (all or a part thereof) S obtained by subtracting the sum of the fixed bands allocated to all ONUs from the maximum allowable band M of the transmission line. A PON shared band that can be commonly used by a plurality of ONUs is set in advance.

The polling request generator 13 of the ONU 1 monitors the degree of accumulation of data in the burst data buffer 12, and when this amount exceeds a predetermined threshold, generates a transmission permission request signal and multiplexes the signal into an upstream transmission line. To OLT 2. OL
When the polling request extraction unit 21 detects a transmission permission request signal from the ONU on the upstream signal, the shared band control unit checks whether there is a vacancy in the shared band S on the transmission line 3. In the polling request generation unit 22, the shared band
A transmission permission signal specifying a predetermined time slot so as not to exceed S is transmitted to the requesting ONU 1 via the downlink transmission path. The ONU 1 having received the permission can transmit using the shared band S by transmitting burst data and the like to the designated time slot.

[0006] In this manner, a predetermined shared band S can be dynamically allocated to each ONU according to the data generation amount of the ONU.

In recent years, communication systems and the like have been required to be managed in an open environment, and a network management architecture standardized based on the OSI reference model has been proposed.

[0008] In this model, system resources to be managed such as layer entities, connections, and physical communication devices related to communication are abstracted and managed in the form of modeled managed objects. The management object has one or more data (parameter setting values, line status, management status, etc.) called attributes.

A managed device (agent) receiving an operation request executes an operation request for a managed object by a message from a management device (manager) responsible for management work and makes a necessary response.

[0010]

The bandwidth setting values required by the PON dynamic bandwidth allocation control function include fixed bandwidths W1 to W3 fixedly allocated to each ONU.
It is sufficient to set in advance a common band S shared by a plurality of ONUs.

Therefore, the setting method for setting the allocated band in advance to the network element such as the controlled device via the communication management system can only set a fixed band for each ONU.

[0012] In recent years, services provided by the ATM network include a SV which sets a virtual connection for a call each time a call is made as a connection type as a call connection form.
C (Switched Virtual Connection), a PVC in which a virtual connection specific to the data transmission source is fixedly set in advance
(Permanent Virtual Connection), PVP (Permanent Virtual Path) that bundles multiple PVCs from the same ONU, etc. are prepared. Furthermore, the ATM network provides various quality of service (QOS) class connections for each of the above SVC and PVC connections by guaranteeing that no cells are discarded up to a predetermined band even during congestion. In some cases.

[0013] Therefore, it is expected that there will be various individual requests for the usage of the above-mentioned PON dynamic band allocation function, particularly for the method of setting a fixed band and a shared band, depending on the communication carrier operating the ATM network. You.

[0014] For example, a service provider that simply sets only a fixed bandwidth allocation value for each ONU, a service provider that allocates and sets a fixed bandwidth in an ONU by dividing it into connection types or ATM service class types, The service provider is a company or the like that previously sets a fixed unit by dividing the unit for each OUN.

[0015] Therefore, if the ONU fixed bandwidth and ONU maximum individual shared bandwidth set for one ONU can be subdivided and set for these connection types and various service classes, the connection type and the service class can be set. It is also possible to perform dynamic bandwidth allocation control according to

[0016] The band setting system for this purpose needs to be able to cope with various band setting standards that differ depending on the service provider. In addition, the processing commonly performed by any service provider in setting the allocated bandwidth can be dealt with by any service provider using a common OS by being fixedly incorporated in the setting system, and the setting work can be saved. Become.

The present invention has been made in view of the above problems, and provides a band setting method capable of realizing a PON dynamic band allocation function according to various function requests in addition to a PON fixed band setting method. Aim.

[0018]

In order to solve the above-mentioned problems, a band setting method according to the present invention employs a method in which a plurality of remote control devices share a transmission band and transmit information to a controlled device, and a predetermined band is set. In a communication system having a function of dynamically changing a band used by each remote control device according to an amount of information to be transmitted within a range not exceeding an assigned value, a relationship between a manager and an agent for managing a controlled device is established. A communication management system, wherein the agent is provided corresponding to a plurality of remote control devices, and accommodates an individual band management object for managing an individual band allocated to each remote control device, and a plurality of remote control devices; A shared band management object that manages a shared band allocated to a port, and An intermediary object that performs band setting on the seed band management object, performs calculation / comparison using the attribute values related to the band possessed by these band management objects, determines whether or not a predetermined condition is satisfied, and notifies the manager of the result. And a configuration having: Further, the individual band management object manages an individual fixed band and an individual maximum shared band fixedly allocated to the corresponding remote control device. Further, the individual band management object divides and manages the individual fixed band allocated to the corresponding remote control device for each type of ATM connection. Furthermore, the individual band management object divides and manages the individual maximum shared band allocated to the corresponding remote control device for each type of ATM connection. Still further, the individual band management object includes an AT
Each of the individual fixed bands that are divided and managed for each M connection type is further divided and managed according to the type of the communication service class.

As described above, a band management object for managing various band setting values is provided for a remote control device, and each band management object manages a plurality of levels of bands hierarchically. It is possible to flexibly cope with various band setting standards that differ depending on the service provider according to the number of ONUs to be accommodated. In addition, since the processing commonly performed by any service provider when setting the bandwidth is fixedly incorporated in the setting system, it is possible to cope with any service provider with a common OS and to save labor for setting work.

A fixed band and a maximum individual shared band can be set for each ONU. In addition, a band can be set for each connection type within the range of a fixed band set for each OUN. The fixed bandwidth set for each connection type is AT
M can be divided and set appropriately according to the number of QOS classes,
Bandwidth can be managed for each QOS parameter of each connection.

[0021]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, referring to FIG. 3, the communication system is an ATM-
In the case of a PON, what types of band allocation values should be managed in ONUs, that is, set, will be described. This is an example showing that there is a possibility that the bandwidth allocated to an ONU may be further subdivided into connection types and service classes accommodated by the ONU.

As shown in the figure, the i-th ONU has ONU
The fixed band Wi and ONU maximum individual shared band (hereinafter abbreviated as maximum shared band) Si set the Wi + Si band allocation value as a whole, and the ONU fixed band Wi is used for the connection / path of the ONU. For each type, the fixed bandwidth for SVC (W
s), fixed bandwidth (Wv) for PVC, and fixed bandwidth (Wp) for PVP, and are set for each type of connection / path accommodated by that ONU within the range of the maximum shared bandwidth Si of this ONU. ,
Individual shared band (Wss) for SVC, individual shared band (Wss) for PVC
sv), there is a possibility that the settings will be divided into individual shared bands (Wsp) for PVP.

Further, if different service classes of QOS are supported for each connection of SVC, PVC, and PVP, each connection via ONU has
For example, it is necessary to secure various bands in advance in the fixed band as follows, that is, to set in advance for each ONU.
There are various service names for the bandwidth to be secured according to this service class depending on the communication carrier.
PCR (Peak Cel) guaranteed by (Constant Bit Rate) service
l Rate), the bandwidth Wcbr to be secured, the peak cell rate can be used if the network is not crowded, and the constant average bandwidth SCR (Sustainable Cell Rate) VBR (Va
riable Bit Rate) Bandwidth Wvbr for SCR of service, GFR that guarantees frame relay communication up to a certain frame rate
(Guaranteed Frame Rate) service with MCR (Minimum Ce
ll Rate) band Wgfr, and when it is free, communication is possible by PCR, but the guarantee is a fixed lower limit band ABR (Available Bit)
Rate) The bandwidth Wabr for MCR in the service can be considered.

These bandwidth allocation values are set in advance by the communication management system when a connection contract is made.

Next, FIGS. 1 and 2 show the basic configuration of an embodiment of the present invention. FIG. 1 shows a configuration of a management object when the present invention is implemented by a communication management system conforming to the OSI model. In the figure, reference numeral 4 denotes a manager responsible for management work in the communication system, and 5 denotes an agent which receives a request for an operation on a managed object from the manager, executes the operation request, and makes a necessary response to the manager. . 6 is a controlled device. Various management objects shown in detail in FIG. 2 are deployed in the agent 5. As shown in FIG. 2, there are two types of management objects: data objects and control objects.

The data object has static data to be set in the form of an attribute, is provided for each port of the PON, and sets the attribute value for determining whether or not to operate the dynamic bandwidth allocation function at that port. The PON physical port object 51 is provided for each PON port, and a PON port bandwidth M representing the entire bandwidth usable by the port and a shared bandwidth S that can be shared and used by each ONU in the attribute data. PON total bandwidth management object 52, which is provided for each ONU and manages individual bandwidth for each ONU. PON individual bandwidth management objects 53-1 to 53-n (ONU fixed bandwidth Wi, ONU individual maximum individual sharing as attribute data) Band Si, fixed band Ws for SVC, fixed band Wv for PVC, fixed band W for PVP
p, individual shared band for SVC Wss, individual shared band for PVC
(Can have separate shared band Wsp for Wsv, PVP)
An ATM band management object (attribute data, the number of VC connections, the number of VP connections, the number of VP connections, the number of GFR bands, ABR band, CBR band, VB
R band, total value of band of SVC connection group Zs, PVC
(With the total value ZV of the bandwidth of the connection group and the total value ZP of the bandwidth for the PVP connection group).

Also, as a control object, in response to a bandwidth setting request from a manager, a bandwidth allocation value is set in each of the above-mentioned various bandwidth management objects, and calculation processing and comparison are performed on attribute values obtained from the various bandwidth management objects. A mediate object 55 that performs processing and notifies the manager of the check result is provided.

Embodiment 1 According to the configuration diagram of FIG. 1 and the flowchart of FIG. 4, the PON shared band is divided and the ONU is
A first embodiment of the present invention for setting the maximum individual shared band will be described.

First, in FIG. 1, the setting of all band allocation values is set in each band management object by a manager via an intermediary object in an agent.
A response to the setting result is also sent to the manager via the intermediary object each time the setting operation is performed. (In FIG. 1, (0) a is this setting, and (0) b is a response to this setting.) Further, some of the settings are set in the controlled device (NE: Network Element) by each band management object. Is performed.

First, the manager sets a mode (PON band mode [fixed / dynamic]) for designating whether or not to allocate a PON dynamic band to the PON port, to the NE via the PON physical port object ( (1) a: Set to object (set) →
(1) b: Set to NE → (1) c: Response from NE → (1) d: Response from object).

Next, the manager assigns ON to each OUN.
U PO with fixed band (Wi) for each OUN
Set to NE via N individual band management objects # 1 to #n ((2) a: Set to object (set) →
(2) b: Set to NE → (2) c: Response from NE → (2) d: Response from object).

Next, the mediation object gets the ONU fixed band (Wi) from the PON individual band management object ((3) a: get command from object → (3) b: result response from object), and sums these. (ΣWi) is calculated and stored. ((3) c: Calculation and data retention). Further, the intermediary object obtains the maximum bandwidth (M) of the PON port for the PON overall bandwidth management object ((3) d: get command from the object → (3) e: result response from the object), and ONU fixed bandwidth (値 Wi) and this maximum bandwidth
(M) is compared and checked ((3) f: Value comparison check).
In addition, the PON for the PON physical port object
Check bandwidth mode ((4) a: ge from object
t command → (4) b: Result response from object).

At this time, if the mode is set to the dynamic bandwidth allocation mode, the maximum bandwidth (M) of the PON port is obtained for the PON overall bandwidth management object ((5) a: get instruction from the object → (5) ) b: Result response from object), ON held by the mediation object
U Calculate the unused PON band (R = M-ΣWi) using the total value of the fixed band (ΣWi) and check that this value is not 0 ((5) c: Calculation and Check). In the case of a negative value, the manager receiving the response resets it appropriately.

Next, the manager sends a request from the mediation object to the P (because all setting operations performed by the mediation object are performed according to instructions from the manager, the description is omitted below).
PON to NE via ON whole bandwidth management object
Set shared bandwidth (S) ((6) a: Set to object (s
et) → (6) b: Set to NE → (6) c: Response from NE → (6) d: Response from object). For PON bandwidth management objects, PON shared bandwidth (S) and PON unused bandwidth (R)
((7) a: get command from object → (7) b: result response from object), and compare and check this PON shared band (S) and PON unused band (R) in the mediation object ((7 ) c: Value comparison check).

Next, from the intermediary object to the NE via each PON individual band management object,
ONU Set the maximum individual shared bandwidth (Si) ((8) a: Set to object (set) → (8) b: Set to NE → (8) c: Response from NE → (8) d: From object Response). Here, the intermediary object gets the ONU maximum individual shared bandwidth (Si) for each PON individual bandwidth management object ((9) a: get command from object → (9) b: result response from object), and Calculate the total (ΣSi) and store it in the mediation object ((9) c: Calculation and data storage). In addition, PO
PON shared bandwidth for all N bandwidth management objects
Get (S) ((9) d: get instruction from object → (9)
e: Result response from the object), and in the intermediary object, the total value of the ONU shared band (ΣSi) and this PON shared band (S) are compared and checked ((9) f: Value comparison check). Embodiment 2. FIG. Next, a second embodiment of the present invention for dividing an ONU fixed band and setting a band for each connection type will be described with reference to the flowcharts of FIGS.

First, a mode (PON band mode [fixed / dynamic]) for designating whether or not to allocate a PON dynamic band to a PON port is set to PO.
Set to NE via N physical port object ((1) a: Set to object (set) → (1) b: Set to NE → (1) c: Response from NE → (1) d : Response from object). Next, the ONU fixed bandwidth (Wi) is set for the NE via the PON individual band management object ((2) a: Set to object (set) → (2) b: Set to NE → (2) c: Response from NE → (2) d: Response from object).

Then, within this fixed range of ONU, SV
The fixed bandwidth (Ws) for C, the fixed bandwidth (Wv) for PVC, and the fixed bandwidth (Wp) for PVP are set for the NE via the PON individual bandwidth management object ((2-1) a : Set to object (set) → (2-1) b: Set to NE → (2-1) c: Response from NE →
(2-1) d: response from object). Here, each PON
Fixed bandwidth for SVC (W
s), fixed bandwidth (Wv) for PVC, fixed bandwidth (Wp) for PVP and ON
U Get each fixed bandwidth (Wi) ((2-2) a: get command from object → (2-2) b: result response from object), calculate the sum (Ws + Wv + Wp), It is stored in the mediation object and compared with ONU fixed bandwidth (Wi) and checked ((2-2) c: Calculation, data holding and comparison check).

Here, an ONU fixed band (Wi) is obtained for each PON individual band management object ((3) a: get instruction from object → (3) b: result response from object), and the sum of these ΣWi) is calculated and stored in the mediation object ((3) c: calculation and data storage). In addition, PO
Get the maximum bandwidth (M) of the PON port for the N entire bandwidth management objects ((3) d: get command from object → (3) e: result response from object), and sum the ONU fixed bandwidth in the mediation object. Check the value (ΣWi) and this maximum bandwidth (M) ((3) f: Value comparison check).

Further, the PON bandwidth mode is checked for the PON physical port object ((4) a: get instruction from object → (4) b: result response from object).

At this time, if the mode is dynamic, the PON
Get the maximum bandwidth (M) of the port ((5) a: get instruction from object → (5) b: result response from object), and sum the ONU fixed bandwidth (で で
Calculate the PON unused band (R = M- 計算 Wi) using Wi) and check that this value is positive ((5) c: Calculation and Check). From the intermediary object to the NE via the PON overall bandwidth management object, the PON shared bandwidth (S)
((6) a: Set to object (set) → (6) b: N
Set to E → (6) c: Response from NE → (6) d: Response from object). Get PON shared band (S) and PON unused band (R) for PON whole band management object
((7) a: get instruction from object → (7) b: result response from object)
The ON shared band (S) and the PON unused band (R) are compared and checked ((7) c: value comparison check).

The ONU maximum individual shared band (Si) is set for the NE via the PON individual band management object ((8) a: Set to object (set) → (8) b: Set to NE →
(8) c: response from NE → (8) d: response from object).

Here, the ONU maximum individual shared band (Si) is obtained for each PON individual band management object ((9) a:
Get command from object → (9) b: Result response from object), calculate the sum (ΣSi) of these, and hold in intermediate object ((9) c: Calculation and data storage). further,
Get the PON shared bandwidth (S) for the PON overall bandwidth management object ((9) d: get command from object →
(9) e: Result response from the object), and in the intermediary object, the total value of the ONU shared band (ΣSi) and this PON shared band (S) are compared and checked ((9) f: Value comparison check). Embodiment 3 FIG. Next, a third embodiment of the present invention for dividing the ONU fixed band / ONU maximum individual shared band and setting the band for each connection type will be described with reference to the flowcharts of FIGS.

First, a mode (PON band mode [fixed / dynamic]) for designating whether to assign a PON dynamic band to a PON port is set to PON.
Set to NE via physical port object ((1) a: Set to object (set) → (1) b: Set to NE →
(1) c: response from NE → (1) d: response from object). Next, the ONU fixed bandwidth (Wi) is set for the NE via the PON individual band management object ((2) a: Set to object (set) → (2) b: Set to NE → (2) c: Response from NE → (2) d: Response from object). Then, within the ONU fixed band, the fixed band (Ws) for SVC, PV
The fixed bandwidth (Wv) for C and the fixed bandwidth (Wp) for PVP
Set for NE via individual bandwidth management object ((2-1) a: Set to object (set) → (2-1) b: Set to NE → (2-1) c: From NE Response → (2-1) d: Response from object). Here, a fixed bandwidth (Ws) for SVC and a fixed bandwidth (Ws) for PVC are assigned to each PON individual bandwidth management object.
v), get the fixed band (Wp) for PVP and the fixed band (Wi) for ONU respectively ((2-2) a: get instruction from object → (2-2) b:
Object result response), their sum (Ws + Wv + W
p) is calculated and stored in the mediation object, and the ONU fixed bandwidth
Check the comparison with (Wi) ((2-2) c: Calculation, data retention and comparison check). Here, an ONU fixed bandwidth (Wi) is obtained for each PON individual bandwidth management object ((3) a: get instruction from the object → (3) b: result response from the object), and the sum (こ れ ら Wi) of these is calculated. Calculate and store in the mediation object ((3) c: Calculation and data storage). In addition, PO
Get the maximum bandwidth (M) of the PON port for the N entire bandwidth management objects ((3) d: get command from object → (3) e: result response from object), and sum the ONU fixed bandwidth in the mediation object. Check the value (ΣWi) and this maximum bandwidth (M) ((3) f: Value comparison check).

Further, the PON bandwidth mode is checked for the PON physical port object ((4) a: get command from object → (4) b: result response from object).

At this time, if the mode is dynamic, the PON
Get the maximum bandwidth (M) of the port ((5) a: get instruction from object → (5) b: result response from object), and sum the ONU fixed bandwidth (で で
Calculate the PON unused band (R = M- 計算 Wi) using Wi) and check that this value is positive ((5) c: Calculation and Check). Set the PON shared bandwidth (S) from the intermediary object to the NE via the PON overall bandwidth management object ((6) a: Set to object (set) → (6) b: NE
Setting → (6) c: Response from NE → (6) d: Response from object). For the PON whole bandwidth management object,
The PON shared band (S) and the PON unused band (R) are obtained ((7) a: get command from the object → (7) b: result response from the object), and this PO
The N shared band (S) and the PON unused band (R) are compared and checked ((7) c: value comparison check). Set ONU maximum individual shared bandwidth (Si) to NE via PON individual bandwidth management object ((8) a: Set to object (set)
→ (8) b: Set to NE → (8) c: Response from NE → (8) d: Response from object).

Then, within the range of the ONU maximum individual shared band, the shared band (Wss) for SVC and the shared band (Wss) for PVC
v), the shared bandwidth (Wsp) for the PVP is set for the NE via the PON individual bandwidth management object ((8-1) a:
Set to object (set) → (8-1) b: Set to NE → (8-1)
c: Response from NE → (8-1) d: Response from object). SVC for each PON individual bandwidth management object
Get the shared bandwidth (Wss), shared bandwidth for PVC (Wsv), shared bandwidth for PVP (Wsp) and ONU maximum individual shared bandwidth (Si) respectively ((8-2) a: get instruction from object → (8-2)
b: result response from object), sum of these (Wss + Ws
v + Wsp) is calculated and stored in the mediation object, and the ONU maximum individual shared bandwidth (Si) is compared with the sum of these (Wss + Wsv + Wsp) ((8-2) c: Calculation and data retention and Comparison check).

Here, the ONU maximum individual shared band (Si) is obtained for each PON individual band management object ((9) a:
Get command from object → (9) b: Result response from object), calculate the sum (ΣSi) of these, and hold in intermediate object ((9) c: Calculation and data storage). further,
Get the PON shared bandwidth (S) for the PON overall bandwidth management object ((9) d: get command from object →
(9) e: Result response from the object), and compare and check the total value of the ONU shared band (ONSi) and this PON shared band (S) in the intermediary object ((9) f: Value comparison check). Embodiment 4 Next, according to the flowcharts of FIGS. 1, 9 and 10, the ONU fixed bandwidth is divided and set for each connection type, and each connection type is further divided to set a fixed bandwidth for each service class. A fourth embodiment will be described.

First, a mode (PON band mode [fixed / dynamic]) for designating whether to assign a PON dynamic band to a PON port is set to PON.
Set to NE via physical port object ((1) a: Set to object (set) → (1) b: Set to NE →
(1) c: response from NE → (1) d: response from object).

Next, the ONU fixed bandwidth (Wi) is set for the NE via the PON individual bandwidth management object ((2)
a: Set to object (set) → (2) b: Set to NE → (2) c:
Response from NE → (2) d: Response from object).

Then, within the fixed range of the ONU, the SV
The fixed bandwidth (Ws) for C, the fixed bandwidth (Wv) for PVC, and the fixed bandwidth (Wp) for PVP are set for the NE via the PON individual bandwidth management object ((2-1) a : Set to object (set) → (2-1) b: Set to NE → (2-1) c: Response from NE →
(2-1) d: response from object).

Here, for each PON individual band management object, a fixed band (Ws) for SVC and a fixed band (Ws) for PVC are used.
v), fixed bandwidth (Wp) for PVP and fixed bandwidth (Wi) for ONU are respectively obtained ((2-2) a: get instruction from object → (2-2)
b: result response from object), sum of these (Ws + Wv +
Wp) is calculated, stored in the mediation object, and compared with the ONU fixed bandwidth (Wi) and checked ((2-2) c: calculation, data holding and comparison check).

Further, for the SVC, PVC, and PVP, fixed bandwidths (Wcbr, Wvbr, Wgfr, Wabr) for QOS are set to the NE via the ATM bandwidth management object ((2-3)
a: Set to object (set) → (2-3) b: Set to NE → (2-
3) c: Response from NE → (2-3) d: Response from object).

QO for ATM band management object
Get fixed band (Wcbr, Wvbr, Wgfr, Wabr) for S ((2-
4) a: get instruction from object → (2-4) b: result response from object), sum of these for each SVC, PVC, PVP
(Zs = Wcbr + Wvbr + Wgfr + Wabr, Zv = Wcbr + Wvbr + Wgfr + Wabr, Z
p = Wcbr + Wvbr + Wgfr + Wabr) is calculated and stored in the mediation object ((2-4) c: calculation and data storage). Furthermore, PON
Fixed bandwidth for SVC for individual bandwidth management objects
(Ws), the fixed bandwidth for PVC (Wv), and the fixed bandwidth for PVP (Wp), respectively ((2-4) d: get instruction from object →
(2-4) e: Result response from object), the total value (Zs, Zv, Zp) and this fixed bandwidth (Ws, Wv,
Wp) is compared ((2-4) f: value comparison check).

Here, an ONU fixed bandwidth (Wi) is obtained for each PON individual bandwidth management object ((3) a: get instruction from object → (3) b: result response from object), and the sum of these ΣWi) is calculated and stored in the mediation object ((3) c: calculation and data storage). In addition, PO
N Get the maximum bandwidth (M) of the PON port for the entire bandwidth management object ((3) d: get from the object
Command → (3) e: Result response from object), and compare and check the total value of ONU fixed bandwidth (ΣWi) and this maximum bandwidth (M) in the intermediary object ((3) f: Value comparison check).

Further, the PON bandwidth mode is checked for the PON physical port object ((4) a: get instruction from object → (4) b: result response from object). At this time, if the mode is dynamic,
Get the maximum bandwidth (M) of the PON port for the PON overall bandwidth management object ((5) a: get from the object)
Command → (5) b: Result response from object), calculate the PON unused bandwidth (R = M-ΣWi) using the total value of ONU fixed bandwidth (で Wi) held by the mediation object, and calculate this value Check that is positive ((5) c: calculation and check).

The PON shared bandwidth (S) is set from the intermediary object to the NE via the PON overall bandwidth management object ((6) a: set to object (set) → (6) b: set to NE → ( 6) c: Response from NE → (6) d: Response from object). P for the PON overall bandwidth management object
The ON shared band (S) and the PON unused band (R) are obtained ((7) a: get command from object → (7) b: result response from object), and this PO is
The N shared band (S) and the PON unused band (R) are compared and checked ((7) c: value comparison check).

Set the ONU maximum individual shared bandwidth (Si) to the NE via the PON individual bandwidth management object ((8) a: set to object (set) → (8) b: set to NE →
(8) c: response from NE → (8) d: response from object).

Here, the ONU maximum individual shared band (Si) is obtained for each PON individual band management object ((9) a:
Get command from object → (9) b: Result response from object), calculate the total (ΣSi) of these, and hold in intermediate object ((9) c: Calculation and data storage). further,
Get the PON shared bandwidth (S) for the PON overall bandwidth management object ((9) d: get command from object →
(9) e: Result response from the object), and in the intermediary object, compare and check the total value (ONSi) of the ONU maximum individual shared bandwidth and this PON shared bandwidth (S) ((9) f: Value comparison check). Embodiment 5 FIG. According to the flowcharts of FIG. 1 and FIGS.
A fifth embodiment of the present invention will be described in which a fixed bandwidth is set for each connection type / service class by dividing an NU fixed bandwidth, and a shared bandwidth is set for each connection type by dividing an ONU maximum individual shared bandwidth.

First, a mode (PON band mode [fixed / dynamic]) for designating whether or not to allocate a PON dynamic band to a PON port is set to PON.
Set to NE via physical port object ((1) a: Set to object (set) → (1) b: Set to NE →
(1) c: response from NE → (1) d: response from object).

Next, the ONU fixed band (Wi) is set for the NE via the PON individual band management object ((2) a: Set to object (set) → (2) b: Set to NE →
(2) c: response from NE → (2) d: response from object).

Then, in the range of the ONU fixed band, SV
The fixed bandwidth (Ws) for C, the fixed bandwidth (Wv) for PVC, and the fixed bandwidth (Wp) for PVP are set for the NE via the PON individual bandwidth management object ((2-1) a : Set to object (set) → (2-1) b: Set to NE → (2-1) c: Response from NE →
(2-1) d: response from object).

Here, for each PON individual band management object, a fixed band (Ws) for SVC and a fixed band (Ws) for PVC are used.
v), fixed bandwidth (Wp) for PVP and fixed bandwidth (Wi) for ONU are respectively obtained ((2-2) a: get instruction from object → (2-2)
b: result response from object), sum of these (Ws + Wv +
Wp) is calculated, stored in the mediation object, and compared with the ONU fixed bandwidth (Wi) and checked ((2-2) c: calculation, data holding and comparison check).

Further, the fixed bandwidth (Wcbr, Wvbr, Wgfr, Wabr) for QOS is set for the SVC, PVC, and PVP to the NE via the ATM-based bandwidth management object ((2-3)
a: Set to object (set) → (2-3) b: Set to NE → (2-
3) c: Response from NE → (2-3) d: Response from object).

QO for ATM band management object
Get fixed band (Wcbr, Wvbr, Wgfr, Wabr) for S ((2-
4) a: get instruction from object → (2-4) b: result response from object), sum of these for each SVC, PVC, PVP
(Zs = Wcbr + Wvbr + Wgfr + Wabr, Zv = Wcbr + Wvbr + Wgfr + Wabr, Z
p = Wcbr + Wvbr + Wgfr + Wabr) is calculated and stored in the mediation object ((2-4) c: calculation and data storage). Furthermore, PON
For individual bandwidth management objects, fixed bandwidth for SVC (Ws), fixed bandwidth for PVC (Wv), fixed bandwidth for PVP (Wp)
((2-4) d: get instruction from the object → (2-4) e: result response from the object), and the total value (Zs, Zv, Zp) and the fixed bandwidth (Ws, W
v, Wp) is compared and checked ((2-4) f: value comparison check). Here, an ONU fixed bandwidth (Wi) is obtained for each PON individual bandwidth management object ((3) a: get instruction from the object → (3) b: result response from the object), and the sum (こ れ ら Wi) of these is calculated. Calculate and store in the mediation object ((3) c: Calculation and data storage). Furthermore, for the PON overall bandwidth management object, the maximum bandwidth of the PON port
Get (M) ((3) d: get instruction from object → (3)
e: Result response from object), the total value of ONU fixed bandwidth (に お い て Wi) and the maximum bandwidth in the mediation object
(M) is compared and checked ((3) f: Value comparison check).

Further, the PON bandwidth mode is checked for the PON physical port object ((4) a: get command from object → (4) b: result response from object). At this time, if the mode is dynamic,
Get the maximum bandwidth (M) of the PON port for the PON overall bandwidth management object ((5) a: get from the object)
Command → (5) b: Result response from object), calculate the PON unused bandwidth (R = M-ΣWi) using the total value of ONU fixed bandwidth (で Wi) held by the mediation object, and calculate this value Check that is positive ((5) c: calculation and check). Set the PON shared bandwidth (S) from the mediation object to the NE via the PON overall bandwidth management object ((6) a: Set to object (set) → (6) b: Set to NE →
(6) c: response from NE → (6) d: response from object). PO for the entire PON bandwidth management object
Get N shared band (S) and PON unused band (R) ((7)
a: get command from object → (7) b: result response from object), compare and check this PON shared band (S) and PON unused band (R) in the mediation object ((7) c: value comparison check ).

Set the ONU maximum individual shared bandwidth (Si) to the NE via the PON individual bandwidth management object ((8) a: set to object (set) → (8) b: set to NE →
(8) c: response from NE → (8) d: response from object).

Then, within the range of the ONU maximum individual shared band, the shared band (Wss) for SVC and the shared band (Wss) for PVC
v), the shared bandwidth (Wsp) for the PVP is set for the NE via the PON individual bandwidth management object ((8-1) a:
Set to object (set) → (8-1) b: Set to NE → (8-1)
c: Response from NE → (8-1) d: Response from object).

For each PON individual band management object, a shared band (Wss) for SVC, a shared band (Wsv) for PVC,
Get the shared band (Wsp) for PVP and the maximum individual shared band (Si) for ONU respectively ((8-2) a: get instruction from object →
(8-2) b: Result response from object), sum of these (W
ss + Wsv + Wsp), keep it in the intermediary object, and turn it on
U Maximum individual shared bandwidth (Si) and their sum (Wss + Wsv + Wsp)
((8-2) c: Calculation, data retention and comparison check).

Here, the ONU maximum individual shared bandwidth (Si) is obtained for each PON individual bandwidth management object ((9) a:
Get command from object → (9) b: Result response from object), calculate the total (ΣSi) of these, and hold in intermediate object ((9) c: Calculation and data storage). further,
Get the PON shared bandwidth (S) for the entire PON bandwidth management object ((9) d: get command from the object → (9) e: result response from the object), and sum the ONU maximum individual shared bandwidth in the mediation object The value (ΣSi) and this PON shared band (S) are compared and checked ((9) f: value comparison check).

As described above, according to the present invention, a management object for performing various bandwidth management is provided for an agent of a communication management system having a relationship between a manager and an agent in correspondence with a remote control device, thereby enabling a user to meet his / her request. The fixed band and the shared band can be set / managed flexibly and in accordance with the management granularity according to the device configuration (hardware configuration).

[Brief description of the drawings]

FIG. 1 shows the configuration of a management object.

FIG. 2 is an overview of a bandwidth management object.

FIG. 3 shows the bandwidth relationship of each connection accommodated in the ONU fixed bandwidth.

FIG. 4 is a flowchart of a first embodiment.

FIG. 5 is a flowchart (part 1) of a second embodiment.

FIG. 6 is a flowchart (part 2) of the second embodiment.

FIG. 7 is a flowchart (part 1) of a third embodiment.

FIG. 8 is a flowchart (part 2) of the third embodiment.

FIG. 9 is a flowchart (part 1) of a fourth embodiment.

FIG. 10 is a flowchart (part 2) of the fourth embodiment.

FIG. 11 is a flowchart (part 1) of a fifth embodiment;

FIG. 12 is a flowchart (part 2) of the fifth embodiment.

FIG. 13: Principle of PON dynamic band allocation function

FIG. 14 is an explanatory diagram of dynamic band allocation.

[Explanation of symbols]

4 manager, 5 agent, 6 controlled device,
51: PON physical port object, 52: PON overall bandwidth management object, 53-1 to 53-n: PON individual bandwidth management object, 54: ATM system bandwidth management object,
55… Mediation object

Claims (6)

[Claims] A plurality of remote control devices transmit information to controlled devices by sharing a transmission band, and each remote control device transmits information to a controlled device within a range not exceeding a preset band allocation value. In a communication system having a function of dynamically changing a band used by a communication management system having a relationship between a manager and an agent for managing a controlled device, a method for setting the band allocation value, The agent is provided for each of the plurality of remote control devices, and manages an individual band allocated to each remote control device, and a shared band allocated to a port accommodating the plurality of remote control devices. And a bandwidth management object that manages bandwidth, and based on bandwidth setting instructions from the manager, And an intermediate object for calculating / comparing attribute values relating to the bandwidths of these managed objects to determine whether or not a predetermined condition is satisfied, and notifying the manager of the result. Setting method. 2. A controlled device, a plurality of remote control devices, and a PON (passive optical network) for multiplexing data from each of the plurality of remote control devices and transmitting the multiplexed data to the controlled device. ATM having a function of monitoring the status of traffic input to a remote control device and dynamically controlling a band used by the remote control device for data transmission within a preset band allocation value.
A method for setting the bandwidth allocation value in a PON system, comprising a communication management system having a relationship between a manager and an agent for managing the controlled device, wherein the agent includes a plurality of remote control devices; , A dedicated band management object that manages a dedicated band allocated to each remote control device, and a shared band management object that manages a shared band allocated to a port that accommodates a plurality of remote control devices, Based on an instruction from the manager, a bandwidth is set for each of the various bandwidth management objects, and calculation /
A mediation object that performs comparison, determines whether or not a predetermined condition is met, and notifies the manager of the result. 3. The individual band management object according to claim 1, wherein the individual band management object manages an individual fixed band and an individual maximum shared band fixedly allocated to a corresponding remote control device. Band setting method. 4. The bandwidth according to claim 3, wherein said individual bandwidth management object further manages an individual fixed bandwidth allocated to a corresponding remote control device by dividing it into ATM connection types. Setting method. 5. The individual band management object according to claim 4, wherein said individual band management object further divides and manages an individual maximum shared band allocated to a corresponding remote control device for each type of ATM connection. Band setting method. 6. The individual bandwidth management object further manages each of the individual fixed bandwidths divided and managed for each ATM connection type in accordance with the type of communication service class. The bandwidth setting method according to claim 4 or 5, wherein: