Method and device for transmitting multi-channel service

Abstract

The invention discloses a method and a device for transmitting multi-channel service, which belongs to the technical field of light transmission. The method comprises the following steps: receiving bandwidth information of TCONTs (transmission container) of all nodes; dividing the payload zone of a GTH (general transfer system) frame into a preset number (n) of mathematical arrays, wherein each mathematical array includes a specified number of time slots, the interval between any two adjacent time slots in each mathematical array is n, and n is a natural number; calculating the time slot location of the mathematical arrays that the TCONT of each node occupies in the payload zone according to the bandwidth information of the TCONTs of all the nodes; and interleaving the TCONTs of the local nodes in the corresponding time slots from a specified frame according to the time slot locations of the mathematical arrays that the TCONTs of the local nodes occupy in the payload zone so as to obtain a GTH frame and transmit the GTH frame. The device comprises a receiving module, a bandwidth information processing module and a frame processing module. The invention can realize asynchronous adaptation of multichannel service through uniform distribution of time slots.

Description

technical field [0001] The invention relates to the technical field of optical transmission, in particular to a method and device for transmitting multi-channel services. Background technique [0002] Today's networks carry a variety of services, such as voice, video, online games, and web browsing. In recent years, many large telecom operators have chosen GPON (Gigabit Passive Optical Network) as the solution for large broadband optical fiber access in the future, which puts forward higher requirements for metropolitan area network equipment. It has the ability to connect with GPON. The adoption of large-capacity optical fiber digital communication transmission system and the introduction of various new services have made the communication network more complex and the capacity is increasing. It is required that the metropolitan area network equipment can deal with the diversification of data service types and the uncertainty of service flow. Features, while ensuring suppo...

AI Technical Summary

Problems solved by technology

When the bandwidth maps of the working channel and the protection channel are different, due to the timing inconsistency between the working channel and the protection channel, the service can only be sent to the working channel but cannot be sent to the protection channel correctly. Therefore, the dual-transmission process fails

When lines of different rates are multiplexed, the timing cannot be aligned due to rate mismatch, and the low-rate line service must be buffered for a certain period of time before being mapped to the high-rate line, resulting in problems of delay and buffering

For the FB business, due to its timing-invariant characteristics, after one or some TC frames are deleted, there will be a problem of bandwidth map fragmentation, which makes the DBA dynamic allocation of bandwidth picture fragments very complicated and difficult to implement

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