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Microwave communication service transmission method and system

A technology for service transmission and microwave communication, which is applied in multiplex communication, time division multiplexing systems, electrical components, etc., and can solve the problems of not having or protecting users' up-front investment, the next or more 2M, etc. To meet the needs of expansion

Inactive Publication Date: 2011-04-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Microwave communication service transmission method and system
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  • Microwave communication service transmission method and system

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Embodiment Construction

[0094] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0095] Fig. 3 is a schematic flow chart of a microwave communication service transmission method according to an embodiment of the present invention. As shown in the figure, the steps for implementing the present invention are:

[0096] After receiving various service signals, in the direction of converting them into radio frequency signals and sending them out, the implementation method is:

[0097] Step S301, mapping each communication service to the VC4 (Virtual Container-4; virtual container 4) structure of SDH;

[0098] Step S302, according to the microwave capacity, extract services according to different particles from the VC4 structure, and construct microwave frames;

[0099] Step S303, using a corresponding modulation mode according to the microwave capacity, modulating the microwave frame and sending it.

[0100]After receiving the r...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/16H04J3/06
Inventor 黄建彬王天祥邱志勇赵贵学张锋封君李德军涂拥军宋晓斌
Owner HUAWEI TECH CO LTD
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