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A network ip shunting method for high-speed railway millimeter wave communication system

A communication system, millimeter-wave technology, applied in the field of communication, can solve the problems of increasing R&D and maintenance costs, power consumption of the whole machine, cost impact, etc., and achieve the effect of avoiding network congestion, avoiding network transmission interruption, and reducing routing delay

Active Publication Date: 2021-01-15
GLORY WIRELESS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The introduction of additional equipment has a great impact on the power consumption and cost of the whole machine
[0005] 2) Routing equipment or switching equipment needs to provide additional management measures such as IP / MAC addresses, which increases R&D and maintenance costs
[0006] 3) Routers or switching devices generally only guarantee a delay of less than 1ms, which may introduce additional network delays

Method used

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  • A network ip shunting method for high-speed railway millimeter wave communication system
  • A network ip shunting method for high-speed railway millimeter wave communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A network IP distribution method for high-speed railway millimeter wave communication system, such as figure 1 As shown, the IP data is received from the optical fiber through the Ethernet PCS / PMA and the Ethernet MAC, and the IP data packet is output online through the AI-STREAM; Routing; the management router discards the received IP data message or sends it to the management data processing module; the service route discards the received IP data message or sends it to the business data processing module.

[0040]The network delay caused by the present invention is low and highly reliable. The present invention divides management and business into two paths for processing through the broadcast module, avoiding unnecessary network congestion caused by abnormality of a certain path. The present invention can not only avoid the interruption of network transmission caused by the unexpected congestion of two services, but also efficiently complete the delivery of network I...

Embodiment 2

[0042] This embodiment is optimized on the basis of Embodiment 1, and the IP header 10 bytes received by the FIFO cache, at this time, the data cannot be read by the management data processing module and the service data processing module; the management routing analysis No. The protocol number of the first IP header, if the protocol number of the first IP header is 4, then the IP packet that satisfies the IP-in-IP protocol, then the management router discards the IP data packet, otherwise it is sent to the management data processing The module processes; the service routing analyzes the protocol number of the first IP header, if the protocol number of the first IP header is 4, then the IP message that satisfies the IP-in-IP protocol, then the service routing will use the IP data The message is sent to the service data processing module for processing, otherwise the IP data message is discarded.

[0043] The routing delay of the present invention is reduced to about 20ns, whic...

Embodiment 3

[0046] This embodiment is optimized on the basis of embodiment 2, such as figure 2 Shown, the selection method of the FIFO of described broadcast module is: management route and business route have processed an IP data packet and need a clock CLK to recover default state, to satisfy the time that Ethernet frame stipulates; The FIFO of described broadcast module is to The data is buffered, and the FIFO depth D1 of the broadcast module is greater than 8 bytes.

[0047] The FIFO depth of the broadcast module is D2=max(Tm / CLK+1, Tw / CLK+1), and the final depth of the FIFO of the broadcast module is D=max(D1, D2); where Tm is required for abnormal recovery of management services Time, Tw is the time required for business abnormal recovery.

[0048] The invention broadcasts the data flow through the broadcast module and processes it through two paths, which ensures the independence of management and business data, does not cause business or management channel blockage, and effectiv...

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Abstract

The invention discloses a network IP shunting method for a high-speed rail millimeter-wave communication system. The IP data is received from the optical fiber through the Ethernet PCS / PMA and the Ethernet MAC, and the IP data message is output online through the AI‑STREAM; Then the received data message is broadcast to the management route and the service route respectively through the broadcast module; the management route discards the received IP data message or sends it to the management data processing module; the service route discards the received IP data message Or send to the business data processing module. The network delay caused by the present invention is low and highly reliable. The present invention divides management and business into two paths for processing through the broadcast module, avoiding unnecessary network congestion caused by abnormality of a certain path. The present invention can not only avoid the problem of network transmission interruption caused by unexpected congestion of two services, but also efficiently complete the delivery of network IP packets without introducing unnecessary delay.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a network IP shunting method used in a high-speed railway millimeter wave communication system. Background technique [0002] Today, processors have entered the multi-core era. Under the multi-core architecture, multi-threads are often deployed in multiple cores to achieve parallel processing. Then, it is necessary to send data packets to different threads by shunting to make multiple cores Implement parallel processing. Millimeter-wave transceivers (vehicle mobile terminals) are deployed on high-speed trains, and are connected to the core network through base stations deployed along the railway. The core network needs to provide IP services for vehicle mobile terminals and manage base stations deployed along the railway. Route IP data flow. How to efficiently and reliably distinguish the two data streams will have a great impact on the performance of the millimeter wave b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/725H04L12/741H04L12/931H04L12/823H04L12/863H04L45/74H04L47/32
CPCH04L45/306H04L45/74H04L49/201H04L47/6245H04L47/32
Inventor 龚有华罗志刚贾凌
Owner GLORY WIRELESS CO LTD
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