Method for bandwidth allocation, optical line terminal, optical network unit and system
An optical network unit and optical line terminal technology, applied in the field of optical communication, can solve problems such as transmission delay not meeting requirements
Active Publication Date: 2021-06-04
HUAWEI TECH CO LTD
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[0004] In order to solve the problem that the transmission delay does not meet the requirements when the PON system is applied to mobile backhaul, and then reduce the transmission delay of the PON system to improve the data transmission rate and transmission efficiency, the technical solution is as follows:
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[0054] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0055] The "plurality" mentioned herein means two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and / or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character " / " generally indicates that the contextual objects are an "or" relationship.
[0056] Please refer to figure 1 , the passive optical network system 100 includes at least one optical line terminal (OLT) 110 , a plurality of optical network units (ONU) 120 and an optical distribution network (ODN) 130 . The optical line terminal 110 is connected to the plurality of optical network units 120 in a point-to-multipoint mann...
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The present application discloses a bandwidth allocation method, an optical line terminal, an optical network unit, and a system. The method includes: receiving a bandwidth request sent by each optical network unit ONU, and each ONU includes a first ONU1; according to the ONU request bandwidth and the bandwidth of the ONU configuration, generate a bandwidth map BWMap message, wherein, the BWMap message includes: the first distribution identifier Alloc-ID1, the first time corresponding to the Alloc-ID1; the second distribution identifier Alloc-ID1 ID2, the second time corresponding to the Alloc-ID2; the Alloc-ID1 and Alloc-ID2 are all allocated to the ONU1; the BWMap message is sent to each ONU, which solves the problem when the PON system is applied to mobile backhaul The problem that the transmission delay does not meet the requirements improves the data transmission rate and efficiency, and improves user satisfaction.
Description
technical field [0001] The present application relates to the field of optical communication, in particular to a bandwidth allocation method, an optical line terminal, an optical network unit and a system. Background technique [0002] Passive Optical Network (PON) is a point-to-multipoint network topology, usually including an optical line terminal (Optical Line Terminal, OLT) at the central office, multiple optical network units (Optical Network Units) Network Unit, ONU) and an optical distribution network (Optical Distribution Network, ODN) between the two. [0003] In a PON system, Dynamically Bandwidth Assignment (DBA) is a mechanism that can dynamically allocate uplink bandwidth within a time interval of microseconds or milliseconds. In the existing PON system, the OLT broadcasts a (Bandwidth Map, BWMap) message according to the requested bandwidth reported by each ONU, so that each ONU transmits data within the time allocated by the OLT through the BWMap message, but...
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IPC IPC(8): H04B10/27
CPCH04Q11/0062H04N7/22H04Q2011/0086H04Q11/0067H04Q2011/0064H04Q2011/0088H04J14/0239H04J14/0223H04J14/0249H04J14/0245H04B10/00H04B10/27
Inventor 张伦万席锋郑刚
Owner HUAWEI TECH CO LTD