Microwave communication service transmission method and system

Abstract

The invention relates to a microwave communication transmission method and relative system, wherein it projects each communication service into virtual container VC4 of synchronous digit sequence; based on microwave capacity, from VC4, extracting service via different particles, to build microwave frame; based on microwave capacity, using relative modulation and sending out; demodulating the received signal to obtain microwave frame; rebuilding said microwave frame into VC4; projecting into relative communication service. The invention realizes integral PDH / SDH microwave communication on unique hardware platform, to distribute services uniformly.

Description

technical field [0001] The present invention relates to a microwave communication service transmission method and system, in particular to a method and system capable of simultaneously realizing SDH (Synchronous Digital Hierarchy; synchronous digital sequence) and PDH (Plesiochronous Digital Hierarchy; asynchronous digital sequence) microwave communication service transmission. Background technique [0002] The optical fiber MSTP (Multi Service Transport Platform; multi-service transmission platform) transmission platform is very mature both in terms of technology and network application. However, due to land privatization and terrain restrictions, wireless transmission is required in many places. When the bandwidth requirement is large and the transmission distance exceeds 1 kilometer, microwave transmission is usually used. At present, in the application of base station backhaul transmission of mobile cellular system, transmission network metropolitan area network, digital...

AI Technical Summary

Problems solved by technology

[0004] 1) For different air interface bandwidth requirements, different equipment needs to be used, such as SDP microwave and PDH microwave, even for PDH microwave, different microwave capacities require different functional boards;

[0005] 2) When the air interface bandwidth of the user needs to be upgraded, only the hardware board can be replaced, which cannot protect the user's initial investment;

[0006] 3) It cannot provide multiple service combinations at the same time, and can only provide limited interfaces. For example, PDH can only provide E1 or E3 or FE (Fast Ethernet; Fast Ethernet), which cannot meet the needs of multiple services at the same time;

[0007] 4) It cannot add and drop services arbitrarily, and does not have the function of ADM (Add and Drop Multiplexer; service add and drop multiplexer)

Therefore, as the microwave capacity is different, different equipment or boards must be used;

[0018] 3) Unable to add and drop services arbitrarily, for example, when the microwave capacity is 34M, one or more 2M cannot be directly downloaded from 34M, and must be decomposed into 2M in the microwave multiplexing module, and then the remaining 2M signals are multiplexed into a 34M , which requires additional microwave multiplexing modules in a back-to-back manner;

[0019] 4) Due to the limitation of multiplexing structure, multiple services cannot be provided at the same time

[0027] 1) SDH microwave equipment cannot arbitrarily upload and download services, but can only transmit transparently. In fact, it converts optical signals into microwave radio frequency signals to realize wireless transmission; if it is necessary to upload and download services on this site, an external ADM or MUX multiplexing device must be installed. Will increase the operator's investment cost;

[0028] 2) Network management will increase the management of MUX devices and increase the complexity of the network;

[0029] 3) Due to one more device, the operator's network maintenance cost is also increased

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