JP2011211262A5 - Station side device, line concentrator, communication system, and bandwidth allocation method - Google Patents

Station side device, line concentrator, communication system, and bandwidth allocation method Download PDF

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JP2011211262A5
JP2011211262A5 JP2010073945A JP2010073945A JP2011211262A5 JP 2011211262 A5 JP2011211262 A5 JP 2011211262A5 JP 2010073945 A JP2010073945 A JP 2010073945A JP 2010073945 A JP2010073945 A JP 2010073945A JP 2011211262 A5 JP2011211262 A5 JP 2011211262A5
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本発明は、局側装置、集線部、通信システムおよび帯域割り当て方法に関し、特に、複数の通信回線にそれぞれ接続された１または複数の宅側装置と通信を行ない、各通信回線における帯域を各宅側装置に割り当てる局側装置、集線部、通信システムおよび帯域割り当て方法に関する。 The present invention relates to a station-side device , a concentrator, a communication system, and a band allocation method, and in particular, communicates with one or a plurality of home-side devices respectively connected to a plurality of communication lines, and sets a band on each communication line to each home. The present invention relates to a station-side device , a concentrator, a communication system, and a bandwidth allocation method that are allocated to a side device.

この発明は、上述の課題を解決するためになされたもので、その目的は、通信信号の輻輳を防ぎ、かつ帯域割り当て処理時間の増大を防ぐことにより、ネットワーク全体の効率を向上させることが可能な局側装置、集線部、通信システムおよび帯域割り当て方法を提供することである。 The present invention has been made to solve the above-mentioned problems, and its purpose is to prevent the congestion of communication signals and to prevent the increase of the bandwidth allocation processing time, thereby improving the efficiency of the entire network. It is to provide a central station device , a concentrator, a communication system, and a band allocation method.

Claims (14)

各々が、通信回線に対応して設けられ、対応の前記通信回線に接続された１または複数の宅側装置と通信信号を送受信するための複数の通信部と、
前記複数の通信部経由で各前記宅側装置から受信した前記通信信号を上位ネットワークへ送信するための集線部とを備え、
各前記通信部は、
対応の前記通信回線に接続された前記１または複数の宅側装置から対応の前記通信回線における帯域の割り当て要求を受けるための受信部と、
前記受信部経由で前記１または複数の宅側装置から受けた前記割り当て要求をまとめた総合要求情報を作成して前記集線部に通知するための回線制御部とを含み、
前記集線部は、
前記各回線制御部から通知された各前記総合要求情報、および前記通信信号を送信するために前記上位ネットワークにおいて使用可能な帯域に基づいて、各前記通信回線における帯域の割り当て量を示す総合割り当て情報を作成して前記各回線制御部に通知するための集線制御部を含み、
前記各回線制御部は、通知された前記総合割り当て情報および対応の前記通信回線に接続された前記１または複数の宅側装置から受けた前記割り当て要求に基づいて対応の前記通信回線における帯域を対応の前記通信回線に接続された前記１または複数の宅側装置に割り当てる、局側装置。 A plurality of communication units, each corresponding to a communication line, for transmitting and receiving communication signals to and from one or more home-side devices connected to the corresponding communication line;
A line concentrator for transmitting the communication signal received from each home-side device via the plurality of communication units to an upper network,
Each said communication part is
A receiving unit for receiving a bandwidth allocation request in the corresponding communication line from the one or more home-side devices connected to the corresponding communication line;
A line control unit for creating general request information that summarizes the allocation request received from the one or more home-side devices via the receiving unit and notifying the concentration unit;
The concentrator is
Total allocation information indicating the allocation amount of the band in each communication line based on each of the total request information notified from each of the line control units and the band that can be used in the upper network for transmitting the communication signal A line concentrator for creating and notifying each line controller,
Each line control unit responds to a band in the corresponding communication line based on the notified general allocation information and the allocation request received from the one or more home-side devices connected to the corresponding communication line. A station-side device that is allocated to the one or more home-side devices connected to the communication line. 各々が、通信回線に対応して設けられ、対応の前記通信回線に接続された１または複数の宅側装置と通信信号を送受信するための複数の通信部経由で、各前記宅側装置から受信した前記通信信号を上位ネットワークへ送信するための集線部であって、Each received from each home device via a plurality of communication units provided corresponding to the communication line and transmitting and receiving communication signals to or from one or more home devices connected to the corresponding communication line A concentrator for transmitting the communication signal to an upper network,
前記通信回線に接続された前記１または複数の宅側装置からの前記通信回線における帯域の割り当て要求をまとめた総合要求情報を各前記通信部から受けるための第１の制御部と、A first control unit for receiving, from each of the communication units, comprehensive request information that summarizes bandwidth allocation requests in the communication line from the one or more home-side devices connected to the communication line;
各前記総合要求情報、および前記通信信号を送信するために前記上位ネットワークにおいて使用可能な帯域に基づいて、各前記通信回線における帯域の割り当て量を示す総合割り当て情報を作成して前記各通信部に通知するための第２の制御部とを備える、集線部。Based on each of the total request information and a band that can be used in the upper network for transmitting the communication signal, a total allocation information indicating a bandwidth allocation amount in each of the communication lines is created to each communication unit. A concentrator comprising a second controller for notifying. 複数の宅側装置と、A plurality of home-side devices;
各々が、通信回線に対応して設けられ、対応の前記通信回線に接続された１または複数の前記宅側装置と通信信号を送受信するための複数の通信部と、A plurality of communication units, each corresponding to a communication line, for transmitting and receiving communication signals to or from one or a plurality of the home-side devices connected to the corresponding communication line;
前記複数の通信部経由で各前記宅側装置から受信した前記通信信号を上位ネットワークへ送信するための集線部とを備え、A line concentrator for transmitting the communication signal received from each home-side device via the plurality of communication units to an upper network,
各前記通信部は、Each said communication part is
対応の前記通信回線に接続された前記１または複数の宅側装置から対応の前記通信回線における帯域の割り当て要求を受けるための受信部と、A receiving unit for receiving a bandwidth allocation request in the corresponding communication line from the one or more home-side devices connected to the corresponding communication line;
前記受信部経由で前記１または複数の宅側装置から受けた前記割り当て要求をまとめた総合要求情報を作成して前記集線部に通知するための回線制御部とを含み、A line control unit for creating general request information that summarizes the allocation request received from the one or more home-side devices via the receiving unit and notifying the concentration unit;
前記集線部は、The concentrator is
前記各回線制御部から通知された各前記総合要求情報、および前記通信信号を送信するために前記上位ネットワークにおいて使用可能な帯域に基づいて、各前記通信回線における帯域の割り当て量を示す総合割り当て情報を作成して前記各回線制御部に通知するための集線制御部を含み、Total allocation information indicating the allocation amount of the band in each communication line based on each of the total request information notified from each of the line control units and the band that can be used in the upper network for transmitting the communication signal A line concentrator for creating and notifying each line controller,
前記各回線制御部は、通知された前記総合割り当て情報および対応の前記通信回線に接続された前記１または複数の宅側装置から受けた前記割り当て要求に基づいて対応の前記通信回線における帯域を対応の前記通信回線に接続された前記１または複数の宅側装置に割り当てる、通信システム。Each line control unit responds to a band in the corresponding communication line based on the notified general allocation information and the allocation request received from the one or more home-side devices connected to the corresponding communication line. A communication system that is allocated to the one or more home-side devices connected to the communication line. 各々が、通信回線に対応して設けられ、対応の前記通信回線に接続された１または複数の宅側装置と通信信号を送受信するための複数の通信部と、
前記複数の通信部経由で各前記宅側装置から受信した前記通信信号を上位ネットワークへ送信するための集線部とを備える局側装置における帯域割り当て方法であって、
前記各宅側装置からの各前記通信回線における帯域の割り当て要求を受けるステップと、
前記各宅側装置から受けた前記割り当て要求を前記通信回線ごとにまとめた複数の総合要求情報を作成して通知するステップと、
通知された各前記総合要求情報、および前記通信信号を送信するために前記上位ネットワークにおいて使用可能な帯域に基づいて、前記各通信回線における帯域の割り当て量を示す総合割り当て情報を作成して通知するステップと、
前記通信回線ごとに、通知された前記総合割り当て情報および前記通信回線に接続された前記１または複数の宅側装置から受けた前記割り当て要求に基づいて前記通信回線における帯域を前記通信回線に接続された前記１または複数の宅側装置に割り当てるステップとを含む、帯域割り当て方法。 A plurality of communication units, each corresponding to a communication line, for transmitting and receiving communication signals to and from one or more home-side devices connected to the corresponding communication line;
A bandwidth allocation method in a station-side device comprising a concentrator for transmitting the communication signal received from each home-side device via the plurality of communication units to an upper network,
Receiving a bandwidth allocation request in each communication line from each home-side device;
Creating and notifying a plurality of general request information that summarizes the allocation request received from each home device for each communication line; and
Based on each notified general request information and a band that can be used in the upper network for transmitting the communication signal, general allocation information indicating a bandwidth allocation amount in each communication line is created and notified. Steps,
For each of the communication lines, a band in the communication line is connected to the communication line based on the notified general allocation information and the allocation request received from the one or more home-side devices connected to the communication line. Allocating to the one or more home-side devices. 前記帯域割り当て方法は、さらに、
前記各宅側装置に前記割り当て要求の閾値を設定するステップを含み、
前記割り当て要求を受けるステップにおいては、前記閾値を上限とした前記各宅側装置からの前記割り当て要求を受ける、請求項４に記載の帯域割り当て方法。 The bandwidth allocation method further includes:
Including a step of setting a threshold value of the allocation request for each home device,
The bandwidth allocation method according to claim 4 , wherein in the step of receiving the allocation request, the allocation request is received from each home-side apparatus with the threshold set as an upper limit. 前記総合要求情報を通知するステップにおいては、前記閾値を上限としない前記各宅側装置からの第１の割り当て要求を前記通信回線ごとにまとめた複数の第１の総合要求情報と、前記閾値を上限とした前記各宅側装置からの第２の割り当て要求を前記通信回線ごとにまとめた複数の第２の総合要求情報とを作成し、
前記総合割り当て情報を通知するステップにおいては、各前記第１の総合要求情報が示す割り当て要求量、各前記第２の総合要求情報が示す割り当て要求量、および前記通信信号を送信するために前記上位ネットワークにおいて使用可能な帯域に基づいて前記総合割り当て情報を作成する、請求項５に記載の帯域割り当て方法。 In the step of notifying the total request information, a plurality of first total request information in which the first allocation request from each home-side device that does not have the upper limit as the upper limit is summarized for each communication line, and the threshold value Creating a plurality of second total request information in which the second allocation request from each home-side device as the upper limit is summarized for each communication line;
In the step of notifying the total allocation information, the allocation request amount indicated by each of the first total request information, the allocation request amount indicated by each of the second total request information, and the upper order for transmitting the communication signal 6. The bandwidth allocation method according to claim 5 , wherein the total allocation information is created based on a bandwidth that can be used in a network. 前記総合要求情報を通知するステップにおいては、前記局側装置において記憶された前記各宅側装置の最低保証帯域のうち、前記割り当て要求のあった前記宅側装置の前記最低保証帯域を前記通信回線ごとにまとめた帯域を前記総合要求情報として通知する、請求項４に記載の帯域割り当て方法。 In the step of notifying the comprehensive request information, the minimum guaranteed bandwidth of the home side device that has made the allocation request out of the minimum guaranteed bandwidth of each home side device stored in the station side device is the communication line. The bandwidth allocation method according to claim 4 , wherein a bandwidth collected for each is notified as the comprehensive request information. 前記総合要求情報を通知するステップにおいては、前記最低保証帯域を上限としない前記各宅側装置からの第１の割り当て要求を前記通信回線ごとにまとめた複数の第１の総合要求情報と、前記割り当て要求のあった前記宅側装置の前記最低保証帯域を前記通信回線ごとにまとめた複数の第２の総合要求情報とを作成し、
前記総合割り当て情報を通知するステップにおいては、各前記第１の総合要求情報が示す割り当て要求量、各前記第２の総合要求情報が示す割り当て要求量、および前記通信信号を送信するために前記上位ネットワークにおいて使用可能な帯域に基づいて前記総合割り当て情報を作成する、請求項７に記載の帯域割り当て方法。 In the step of notifying the total request information, a plurality of first total request information in which the first allocation request from each home-side device that does not have the minimum guaranteed bandwidth as an upper limit for each communication line, Creating a plurality of second total request information in which the minimum guaranteed bandwidth of the home-side device that has requested allocation is summarized for each communication line;
In the step of notifying the total allocation information, the allocation request amount indicated by each of the first total request information, the allocation request amount indicated by each of the second total request information, and the upper order for transmitting the communication signal The bandwidth allocation method according to claim 7 , wherein the total allocation information is created based on a bandwidth that can be used in a network. 前記総合要求情報を通知するステップにおいては、前記最低保証帯域を上限としない前記各宅側装置からの第１の割り当て要求を前記通信回線ごとにまとめた複数の第１の総合要求情報と、前記割り当て要求のあった前記宅側装置の前記最低保証帯域および前記第１の割り当て要求が示す割り当て要求量の小さい方を前記通信回線ごとにまとめた複数の第２の総合要求情報とを作成する、請求項８に記載の帯域割り当て方法。 In the step of notifying the total request information, a plurality of first total request information in which the first allocation request from each home-side device that does not have the minimum guaranteed bandwidth as an upper limit for each communication line, Creating a plurality of second total request information in which the minimum guaranteed bandwidth of the home-side apparatus that has requested allocation and the allocation request amount indicated by the first allocation request are summarized for each communication line; The bandwidth allocation method according to claim 8 . 前記総合割り当て情報を通知するステップにおいては、前記通信回線ごとの前記第１の総合要求情報が示す割り当て要求量および前記第２の総合要求情報が示す割り当て要求量の小さい方に基づいて前記各通信回線における帯域の割り当て量を算出し、前記通信信号を送信するために前記上位ネットワークにおいて使用可能な総帯域が、算出した前記各通信回線における帯域の割り当て量の総和に対して余る場合には、前記第１の総合要求情報が示す割り当て要求量が前記第２の総合要求情報が示す割り当て要求量よりも大きい前記通信回線である割り当て不足通信回線について算出した前記割り当て量に、前記総帯域の余りの全部または一部を加えて前記総合割り当て情報を作成する、請求項６、８および９のいずれかに記載の帯域割り当て方法。 In the step of notifying the total allocation information, each communication is based on the smaller of the allocation request amount indicated by the first total request information and the allocation request amount indicated by the second total request information for each communication line. When the total bandwidth that can be used in the upper network to calculate the bandwidth allocation amount in the line and transmit the communication signal is larger than the calculated bandwidth allocation amount in each communication line, The allocation request amount indicated by the first overall request information is larger than the allocation request amount indicated by the second overall request information. all or part of the added to create the overall allocation information, band allocation according to any of claims 6, 8 and 9 Method. 前記総合割り当て情報を通知するステップにおいては、前記通信信号を送信するために前記上位ネットワークにおいて使用可能な総帯域が、算出した前記各通信回線における帯域の割り当て量の総和に対して余る場合であって前記割り当て不足通信回線が複数存在するときには、各前記割り当て不足通信回線について算出した前記割り当て量に、前記各割り当て不足通信回線の前記第２の総合要求情報が示す割り当て要求量の大小関係に基づいて前記総帯域の余りの全部または一部を前記割り当て不足通信回線ごとに分けた帯域を加え、前記総合割り当て情報を作成する、請求項１０に記載の帯域割り当て方法。 The step of notifying the total allocation information is a case where the total bandwidth that can be used in the upper network for transmitting the communication signal is greater than the calculated total bandwidth allocation amount in each communication line. When there are a plurality of the under-allocated communication lines, the allocation amount calculated for each of the under-allocated communication lines is based on the magnitude relationship of the allocation request amount indicated by the second total request information for each of the under-allocated communication lines. The band allocation method according to claim 10 , wherein the total allocation information is created by adding a band obtained by dividing all or a part of the remainder of the total band for each of the insufficient allocation communication lines. 前記宅側装置に帯域を割り当てるステップにおいては、前記各通信回線のうちの少なくともいずれか１つについて、前記総合要求情報を通知してから所定時間経過するまでに前記総合割り当て情報が通知されない場合には、通知されなかった前記通信回線ごとに、過去の前記総合割り当て情報または所定値と、前記通信回線に接続された前記１または複数の宅側装置から受けた前記割り当て要求とに基づいて、前記通信回線における帯域を前記通信回線に接続された前記１または複数の宅側装置に割り当てる、請求項４から１１のいずれかに記載の帯域割り当て方法。 In the step of allocating the bandwidth to the home side device, when the total allocation information is not notified before a predetermined time elapses from the notification of the total request information for at least one of the communication lines. For each communication line that has not been notified, based on the past total allocation information or a predetermined value and the allocation request received from the one or more home-side devices connected to the communication line, The band allocation method according to any one of claims 4 to 11 , wherein a band in a communication line is allocated to the one or more home-side devices connected to the communication line. 複数の宅側装置と、A plurality of home-side devices;
各々が、通信回線に対応して設けられ、対応の前記通信回線に接続された１または複数の前記宅側装置と通信信号を送受信するための複数の通信部と、A plurality of communication units, each corresponding to a communication line, for transmitting and receiving communication signals to or from one or a plurality of the home-side devices connected to the corresponding communication line;
前記複数の通信部経由で各前記宅側装置から受信した前記通信信号を上位ネットワークへ送信するための集線部とを備える通信システムにおける帯域割り当て方法であって、A band allocation method in a communication system comprising a concentrating unit for transmitting the communication signal received from each home-side device via the plurality of communication units to an upper network,
前記集線部が、前記１または複数の宅側装置からの前記通信回線における帯域の割り当て要求をまとめた総合要求情報を各前記通信部から受けて、各前記通信回線における帯域の割り当て量を決定するステップと、The line concentrator receives comprehensive request information that summarizes bandwidth allocation requests in the communication line from the one or more home-side devices from each of the communication units, and determines a bandwidth allocation amount in each of the communication lines. Steps,
前記各通信部が、決定された対応の前記通信回線における前記割り当て量および前記対応の通信回線に接続された前記１または複数の宅側装置から受けた前記割り当て要求に基づいて、前記対応の通信回線における帯域を前記対応の通信回線に接続された前記１または複数の宅側装置に割り当てるステップと、Based on the assigned amount in the determined corresponding communication line and the allocation request received from the one or more home-side devices connected to the corresponding communication line, each communication unit determines the corresponding communication. Allocating bandwidth in a line to the one or more home-side devices connected to the corresponding communication line;
前記集線部が、前記各通信部による前記帯域の割り当て動作のタイミングを同期させるステップとを含む、帯域割り当て方法。And a step of synchronizing the timing of the band allocation operation by each of the communication units. 前記各通信回線における帯域の割り当て量を決定するステップにおいては、前記集線部は、使用を許可する前記帯域の量を前記通信部ごとに個別に決定する、請求項１３に記載の帯域割り当て方法。14. The bandwidth allocation method according to claim 13, wherein in the step of determining a bandwidth allocation amount in each communication line, the line concentrator individually determines the bandwidth amount permitted to be used for each communication portion.
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