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Bandwidth allocation device and bandwidth allocation method

A bandwidth allocation method and bandwidth allocation technology, applied in the direction of data exchange through path configuration, star/tree network, etc., can solve the problems of receiving scheduling information and unable to perform cooperative DBA

Active Publication Date: 2022-07-19
NIPPON TELEGRAPH & TELEPHONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the OLT cannot receive scheduling information from the higher-level equipment, and therefore cannot perform cooperative DBA

Method used

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  • Bandwidth allocation device and bandwidth allocation method
  • Bandwidth allocation device and bandwidth allocation method
  • Bandwidth allocation device and bandwidth allocation method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach )

[0067] figure 1 It is a diagram showing a configuration example of the optical communication system 1 . The optical communication system 1 is a system that communicates using optical signals. The optical communication system 1 includes a host device 2 , host device 3 , L2SW4 , OLT 5 , one or more ONU 6 , one or more ONU 7 , one or more lower device 8 , and one or more lower device 9 .

[0068] The upper device 2 is an LLS device higher than the OLT 5 . The upper device 2 transmits the scheduling information of the lower device 8 for LLS to the OLT 5 . The host device 2 receives the upstream data transmitted from the ONU 6 for LLS from the OLT 5 via the L2SW4.

[0069] The host device 3 is a device for HLS that is host to the OLT 5 . The host device 3 receives the upstream data transmitted upstream from the ONU 7 for HLS from the OLT 5 via the L2SW4.

[0070] L2SW4 is a layer 2 switch. The L2SW4 relays data between the host device 2 and the OLT5. The L2SW4 relays data be...

no. 2 approach )

[0182] In the second embodiment, the allocating unit 54 allocates data for HLS within a range from the minimum allocation data amount (hereinafter, referred to as “minimum data amount”) to the maximum allocation data amount (hereinafter, referred to as “maximum data amount”). The ONU 7 is different from the first embodiment in that the allocation is performed. In the second embodiment, differences from the first embodiment will be described.

[0183] Figure 17 is a diagram showing an example of the relationship between the requested amount and the allocated amount (allocated data amount). The minimum amount of data is the amount of data allocated to the ONU 7 for HLS regardless of whether or not the request amount is notified to the OLT 5 from the ONU 7 for HLS. The maximum data amount is the maximum value of the data amount that can be allocated to the ONU 7 for HLS. The minimum data amount and the maximum data amount are predetermined values ​​for each ONU 7 for HLS usin...

no. 3 approach )

[0197] In the third embodiment, in the additional allocation processing of the upstream data for the ONU 7 for HLS, the allocation unit 54 allocates the remaining data amount to the ONU 7 for HLS according to the weight coefficient determined in advance for each ONU 7 for HLS. The first embodiment and the second embodiment are different. In the third embodiment, differences from the first embodiment and the second embodiment will be described.

[0198] Hereinafter, the sum of the weighting coefficients (OnuWeight) of the ONUs for HLS whose request amount "RequestSize" is not 0 is referred to as "OnuWeightSum". The allocation unit 54 calculates the value of the variable "AddGrantSizeHls" based on the weighting coefficient, thereby determining the allocation data size of the ONU 7 for HLS.

[0199] Figure 20 This is the first part of a flowchart showing an example of the procedure of allocating the additional data amount to the ONU 7 for HLS. The allocating section 54 determ...

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Abstract

The bandwidth allocation device includes: an acquisition unit that acquires scheduling information related to transmission of uplink data by a first subscriber line terminal device that is a subscriber line terminal device that needs to transmit uplink data with low delay; The request amount reception cycle of a period longer than the maximum round-trip time is received from the second subscriber line terminal device, which is a subscriber line terminal device that does not need to transmit uplink data with low delay, indicating that it is related to the transmission of uplink data from the second subscriber line terminal device. request amount information; and an assigning unit that allocates bandwidth to uplink data of the first subscriber line terminal device based on the scheduling information at an allocation amount determination cycle shorter than the request amount reception cycle, and determines the cycle based on the allocation amount based on the information indicating the request amount Bandwidth is allocated to the upstream data of the second subscriber line terminal device.

Description

technical field [0001] The present invention relates to a bandwidth allocation device and a bandwidth allocation method. Background technique [0002] In a mobile wireless communication system (mobile system), the function of the base station may be divided into a function on the upper layer side and a function on the lower layer side. The higher-level device is a device (central unit) that is collectively arranged, and is a device that executes the function of the upper layer side of the base station. The lower-level device is a device (distributed unit) that is distributed in a distributed manner, and is a device that executes a function on the lower-level layer side of the base station. [0003] The upper device and the lower device are connected by optical fibers. The connection between the upper device and the lower device is called Mobile Fronthaul (MFH: Mobile Fronthaul). Hereinafter, the part where the function of the base station is divided between the upper devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/44
CPCH04L12/44H04W28/20H04W72/044H04W72/12
Inventor 鹈泽宽之氏川裕隆中村浩崇
Owner NIPPON TELEGRAPH & TELEPHONE CORP
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