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Transmission equipment and method for service transmission therein
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A technology for transmission equipment and services, applied in the field of communication, can solve the problems of high cost and inability to effectively support the design of large-capacity equipment, and achieve the effect of saving equipment cost and simplifying clock processing
Inactive Publication Date: 2011-11-23
HUAWEI TECH CO LTD
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[0009] In order to transmit clock information, the existing technology adopts the space division crossover method (asynchronous switching method) to realize the unified scheduling of clock and data information, which requires multiple high-cost PLLs to realize clock phase locking, and cannot effectively support the design of large-capacity equipment
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Embodiment 1
[0034] see figure 2 , this embodiment provides a transmission device, including a service receiving board and a service sending board, wherein the service receiving board includes:
[0035] The coding module is used to receive the clock information in the business data, encode the clock information in the business data according to the local clock information, and obtain and output the coded data;
[0036] The service sending board includes:
[0037] The decoding module is used to receive the encoded data output by the service receiving board, decode the encoded data according to the local clock information, obtain and output the sending reference clock;
[0038] The service output module is used to receive the data information in the service data and the transmission reference clock output by the decoding module, and use the transmission reference clock to schedule the data information to the corresponding port for output.
[0039] Further, see image 3 , the service rece...
Embodiment 2
[0079] This embodiment provides a method for transmitting services inside a device, including:
[0080] The service receiving board receives the clock information in the service data, encodes the clock information in the service data according to the local clock information, obtains encoded data, and sends the encoded data;
[0081] The service sending single board receives the coded data, decodes the coded data according to the local clock information, obtains the sending reference clock, and uses the sending reference clock to schedule the data information in the service data to the corresponding port for output.
[0082] see Figure 11 , the method for internally transmitting services of the above-mentioned equipment specifically includes:
[0083] Step 101: The service receiving board receives service data, and restores the service data to data information and clock information;
[0084] Step 102: The service receiving board encapsulates the data information into the loc...
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Abstract
The invention discloses transmission equipment and a method for service transmission therein, and belongs to the field of communication. The equipment comprises a service receiving single board with an encoding module and a service transmitting single board with a decoding module. The method comprises the following steps that: the service receiving single board receives clock information in service data, encodes the clock information in the service data according to local clock information to obtain encoded data and transmits the encoded data; and the service transmitting single board receives the encoded data, decodes the encoded data according to the local clock information to obtain a transmission reference clock, and uses the transmission reference clock to schedule the data information in the service data to a corresponding interface to output the data information. The service receiving single board of the invention adapts the clock information in the service data to a local clock domain by encoding the clock information without clock synchronization by using PLL, thereby saving equipment cost, and simplifying clock treatment for scheduling exchange inside the equipment.
Description
technical field [0001] The invention relates to the communication field, in particular to a transmission device and a method for transmitting services inside the device. Background technique [0002] NGN (Next Generation Network, Next Generation Network) is a packet-based network, which can provide various services including telecommunication services by using a transmission technology with flexible bandwidth and QoS (Quality of Service, Quality of Service) guarantee. In order to guarantee the performance and service quality of NGN network, the next generation network needs high-quality frequency synchronization. [0003] OTN (Optical Transport Network, Optical Transport Network) is a transport network following the SDH (Synchronous Digital Hierarchy, Synchronous Digital Series) network that supports greater capacity service transmission and scheduling. As a transport network supporting NGN applications, the OTN transport network needs to support lossless transmission of da...
Claims
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