阅读说明：本技术 一种对光网络设备上行发光时隙的分配方法及装置 (Method and device for distributing uplink luminous time slots of optical network equipment ) 是由 曾小飞 于 2018-09-29 设计创作，主要内容包括：一种对光网络设备上行发光时隙的分配方法及装置,用以解决现有技术中存在的调整光网络单元发射功率的调整复杂度高,且成本较高的问题。本申请实施例中通过比较各个ONT发送的上行光信号到达OLT的光功率大小,来确定各个ONT发送上行光信号的顺序,从而使得光功率较大的ONT发送光信号时间晚于光功率较小的OTN发送光信号的时间。(A method and a device for allocating an uplink light-emitting time slot of optical network equipment are used for solving the problems of high adjustment complexity and high cost of adjusting the emission power of an optical network unit in the prior art. In this embodiment of the present application, the order in which each ONT sends the uplink optical signal is determined by comparing the optical power of the uplink optical signal sent by each ONT reaching the OLT, so that the time when the ONT with the higher optical power sends the optical signal is later than the time when the OTN with the lower optical power sends the optical signal.)

A method for allocating an uplink light-emitting time slot to an optical network device, comprising:

an Optical Line Terminal (OLT) acquires optical power corresponding to a plurality of optical network devices respectively, wherein the optical power corresponding to a first optical network device is the power of the OLT for receiving an optical signal sent by the first optical network device, or the power of the first optical network device for receiving the optical signal sent by the OLT, and the first optical network device is one of the plurality of optical network devices;

the OLT allocates uplink light-emitting time slots for the plurality of optical network devices to send uplink optical signals in a Dynamic Bandwidth Allocation (DBA) period according to the optical power respectively corresponding to the plurality of optical network devices;

wherein, an uplink light-emitting time slot of a jth optical network device in the plurality of optical network devices for sending an uplink optical signal is earlier than an uplink light-emitting time slot of a jth +1 optical network device for sending an uplink optical signal, and an optical power corresponding to the jth optical network device is smaller than an optical power corresponding to the jth +1 optical network device, a value of j is an integer smaller than n, and n is equal to the number of optical network devices communicating with the OLT.

The method of claim 1, wherein the DBA period comprises a guard time interval, and wherein the guard time interval is located after an uplink light-emitting time slot allocated to a last optical network device transmitting the uplink optical signal or before an uplink light-emitting time slot allocated to a first optical network device transmitting the uplink optical signal.

The method according to claim 1 or 2, wherein the optical network device is an optical network terminal ONT or an optical network unit ONU.

A method for allocating an uplink light-emitting time slot to an optical network device, comprising:

an Optical Line Terminal (OLT) acquires optical power corresponding to a plurality of optical network devices respectively, wherein the optical power corresponding to a first optical network device is the power of the OLT for receiving an optical signal sent by the first optical network device, or the power of the first optical network device for receiving the optical signal sent by the OLT, and the first optical network device is one of the plurality of optical network devices;

the OLT allocates uplink light-emitting time slots for the plurality of optical network devices to send uplink optical signals in a Dynamic Bandwidth Allocation (DBA) period according to the optical power respectively corresponding to the plurality of optical network devices;

the plurality of optical network devices are divided into M groups, one group includes at least one optical network device, an uplink light-emitting time slot, in which any optical network device included in the ith group sends an uplink optical signal, is earlier than an uplink light-emitting time slot, in which any optical network device included in the (i + 1) th group sends an uplink optical signal, optical power corresponding to any optical network device included in the ith group is smaller than optical power corresponding to any optical network device included in the (i + 1) th group, M is an integer greater than 1, and a value of i is an integer smaller than M.

The method of claim 4, wherein the DBA period comprises a guard time interval, and wherein the guard time interval is located after an uplink light-emitting time slot allocated to a last optical network device transmitting the uplink optical signal or before an uplink light-emitting time slot allocated to a first optical network device transmitting the uplink optical signal.

The method according to claim 4 or 5, wherein the optical network device is an optical network terminal ONT or an optical network unit ONU.

An allocation device for upstream light-emitting time slots of optical network equipment, which is applied to an Optical Line Terminal (OLT), and comprises:

an obtaining module, configured to obtain optical powers corresponding to multiple optical network devices, where an optical power corresponding to a first optical network device is a power of an optical signal sent by the first optical network device and received by the OLT, or a power of an optical signal sent by the OLT and received by the first optical network device, and the first optical network device is one of the multiple optical network devices;

the adjusting module is used for allocating uplink light-emitting time slots for the plurality of optical network devices to send uplink optical signals in a Dynamic Bandwidth Allocation (DBA) cycle according to the optical powers respectively corresponding to the plurality of optical network devices;

wherein, an uplink light-emitting time slot of a jth optical network device in the plurality of optical network devices for sending an uplink optical signal is earlier than an uplink sending time slot of a jth +1 optical network device for sending an uplink optical signal, and optical power corresponding to the jth optical network device is smaller than optical power corresponding to the jth +1 optical network device, j takes an integer smaller than n, and n is equal to the number of optical network devices communicating with the OLT.

The apparatus of claim 7, wherein the DBA period comprises a guard time interval after an uplink light-emitting time slot allocated for a last optical network device transmitting the uplink optical signal or before an uplink light-emitting time slot allocated for a first optical network device transmitting the uplink optical signal.

The apparatus according to claim 7 or 8, wherein the optical network device is an optical network terminal ONT or an optical network unit ONU.

An allocation device for upstream light-emitting time slots of optical network equipment, which is applied to an Optical Line Terminal (OLT), comprises:

an obtaining module, configured to obtain optical powers corresponding to multiple optical network devices, where an optical power corresponding to a first optical network device is a power of an optical signal sent by the first optical network device and received by the OLT, or a power of an optical signal sent by the OLT and received by the first optical network device, and the first optical network device is one of the multiple optical network devices;

the adjusting module is used for allocating uplink light-emitting time slots used for sending uplink optical signals in a dynamic bandwidth allocation DBA to the plurality of optical network devices according to optical power cycles respectively corresponding to the plurality of optical network devices;

the plurality of optical network devices are divided into M groups, one group includes at least one optical network device, an uplink light-emitting time slot, in which any optical network device included in the ith group sends an uplink optical signal, is earlier than an uplink light-emitting time slot, in which any optical network device included in the (i + 1) th group sends an uplink optical signal, optical power corresponding to any optical network device included in the ith group is smaller than optical power corresponding to any optical network device included in the (i + 1) th group, M is an integer greater than 1, and a value of i is an integer smaller than M.

The apparatus of claim 10, wherein the DBA period comprises a guard time interval after an uplink light-emitting time slot allocated for a last optical network device transmitting the uplink optical signal or before an uplink light-emitting time slot allocated for a first optical network device transmitting the uplink optical signal.

The apparatus according to claim 10 or 11, wherein the optical network device is an optical network terminal ONT or an optical network unit ONU.

An optical line terminal comprising a processor and a memory, wherein:

the memory is used for storing program codes;

the processor is used for reading and executing the program codes stored in the memory so as to realize the method of any one of claims 1 to 6.

A passive optical network, PON, system comprising the OLT of claim 13 and a plurality of optical network devices in communication with the OLT.