The Science Fiction World of Xueba

Early the next morning, Mu Donglai's father and daughter packed their luggage and headed to Xiangjiang. This time they went to Xiangjiang. In addition to being invited by Mu Qingqing's second uncle to see the environment of Xiangjiang University, they would also help Pang Xuelin apply for the global patent of CVD.

Although China has joined the PCT patent cooperation organization, compared with the domestic PCT process, Xiangjiang is much stronger in terms of speed and standardization.

As for Fatty Liu, a series of processes including company registration and formation began.

At nine o'clock in the morning, Pang Xuelin arrived at Huawei's headquarters on time.

Ren Zhengfei had been waiting for a long time with several high-level Huawei executives.

In addition to Xu Wenwei whom I had seen before, there was also a man and a woman, who were the other two generals under Ren Zhengfei, Zheng Baoyong and Sun Yafang.

Zheng Baoyong is the leader of Huawei's early research and development department. Since 1989, he has been engaged in the research and development of communication products, and has been in charge of the overall design of a number of program-controlled switching equipment. And later the research and development work of C\u0026C08 million door machine.

As for Sun Yafang, let alone.

This person is also one of the key figures in Huawei's rise. Huawei's subsequent attack on overseas markets was developed step by step by the team led by Sun Yafang.

Within Warwick, Sun Yafang's status is below one person and above ten thousand people. Although the company still has several executive vice presidents, their actual power is below Sun Yafang's. This is not only a matter of ranking, but also requires direct or indirect For the questions she reported, it can be said that there are two decision-makers in Huawei's decision-making hierarchy: Ren Zhengfei and Sun Yafang.

Some personnel appointments and important documents can basically be passed as long as Sun Yafang reads and agrees; in Huawei’s company-level documents, there are only two people who are copied in the column of the newspaper, and the names of other vice presidents must appear; The documents of the marketing and human resources departments that she is directly in charge of are only copied to Sun Yafang; other vice presidents call Sun Yafang Mr. Sun, and even Ren Zhengfei is Mr. Sun's leader and Mr. Sun in public.

But now, Sun Yafang is only the person in charge of Warwick's marketing department, and Ren Zhengfei's ability to bring her here to meet Pang Xuelin shows to some extent how much Ren Zhengfei attaches importance to her.

"Mr. Pang, this is Zheng Baoyong, the chief engineer of our company, and this is Sun Yafang, the manager of the marketing department!"

"Mr. Zheng, Mr. Sun, hello!"

Pang Xuelin shook hands with Zheng Baoyong and Sun Yafang respectively.

"Mr Pang,

Hello! "

Zheng Baoyong and Sun Yafang looked at Pang Xuelin with scrutiny. Although they had known from Ren Zhengfei and Xu Wenwei that Pang Xuelin was unusual, they couldn't imagine how unusual Pang Xuelin was.

Ren Zhengfei smiled and said, "Mr. Pang, everyone is waiting in the meeting room, so let's start."

"OK!"

Pang Xuelin smiled and nodded.

Although he talked to Xu Wenwei about the design scheme of the two thousand and ten thousand program-controlled switches two days ago, he only provided a general idea, and did not have time to talk about the specific technical details.

In today's meeting, Ren Zhengfei summoned all the engineers from Huawei's R\u0026D department, and Pang Xuelin explained the design ideas of the program-controlled switch to everyone.

Pang Xuelin and Ren Zhengfei entered the conference room side by side, and found that the conference room was already packed with engineers from Huawei.

Xu Wenwei, Zheng Baoyong, and Sun Yafang found the three remaining vacant seats and sat down, while Ren Zhengfei accompanied Pang Xuelin to the top of the conference room.

Ren Zhengfei looked down, smiled and said: "Everyone is here, let's start now. This is Mr. Pang Xuelin, the research and development consultant who has been rumored in our company for the past two days. Next, Pang Xuelin will explain to you about program control. Some technical ideas and ideas in the process of switch research and development..."

As he spoke, Ren Zhengfei took the lead in applauding, followed by scattered voices in the conference room.

Like Zheng Baoyong and Sun Yafang, most people looked at Pang Xuelin with scrutiny.

Although there are many rumors about this young man, it is said that it took him two hours to conquer the boss and XCMG with technical means.

But when they saw Pang Xuelin, almost everyone had doubts.

Such a young man who looks like a high school student is really as amazing as Xu Wenwei said?

Especially the first young man in his early twenties who sat in the meeting room was even more unconvinced.

As a young man who grew up on the praises of others, Li Yinan has always been proud of himself.

He was admitted to the junior class of Huazhong University of Science and Technology when he was fifteen years old. Even among the classmates in the junior class, he was considered an outstanding existence.

After graduating from a bachelor's degree, he stayed in school for graduate school and just got a master's degree.

In fact, he has been an intern at Warwick since last year, and has been highly praised by Zheng Baoyong and Xu Wenwei.

Just a few days ago, he went back to school to defend his thesis, completed the graduation procedures by the way, and was waiting to go back to the company to show off.

Who would have thought that just after I came back yesterday, I heard that a young genius came to the company and was hired by the boss as the company's research and development consultant. Although I don't know the details, Li Yinan is a little unconvinced about Pang Xuelin.

His own level is already quite good within Huawei, so how can he reach his own level no matter how talented he is?

Li Yinan couldn't believe it.

Pang Xuelin had a panoramic view of everyone's eyes, this kind of small scene was nothing to him at all, he smiled and said: "Okay, then let's get straight to the point."

"Today we start with the design of the 2,000-door program-controlled switchboard. I roughly told Mr. Xu before that the 2,000-door program-controlled switchboard is mainly composed of three major parts: the central processing module, the communication control module, and the central switching network."

"Central processing module module includes secondary power supply board (PWS), alarm processing board (ALM), main processing board (AMP), central database board (CDP), bus control board (BCP), built-in service processing board (ISP). The bill storage board is also located in the central processing module frame. The hardware of the main processing board, the central database board, and the bus control board are all CPC boards, and the functions of main control, central database, and bus transfer are completed by loading corresponding host software. Work in active/standby mode. The main processing board and the bus control board are fixedly configured as a pair, and the central database board and built-in business processing board are configured according to the actual situation. Among them, the central database board is configured with at least one pair and a maximum of seven pairs. The built-in business Processing boards can be paired up to six pairs."

"The main processing board is the hub of the whole system, responsible for the state management of each board in AM/CM (including SPM, SRM) and the front-end and back-end communication. The AMP and BAM are directly connected through the 10M/100M Ethernet port. The functions that the CDP board can complete include user line hunting function, trunk line selection function, ITC channel management function, ECP channel management function, management function of various public resources in the SRM frame, etc. The BCP board is responsible for each single board in the CPM frame The ISP board completes the functions of special number conversion, calling number screening, and password billing. The ALM board is responsible for serial communication and manages the status of the PWS board and fan frame. The SUB board is the bill storage board. **, When the bills generated by the SPM module are sent to the BAM, a copy is backed up on the SUB board at the same time. When the BAM fails, the SUB board can replace the BAM to complete the bill storage function. The SUB board realizes the safe storage and backup of the bills, improving the system reliability. reliability……"

While explaining, Pang Xuelin used a marker pen to draw the design plan of the entire central processing module in the form of a module diagram on the whiteboard behind him.

Below the meeting room, rustling excerpts and engineers' discussions sounded from time to time.

"This proposal feels much better than the one we had before."

"I can't find anything wrong with the hardware."

"Moreover, there is one more SUB board than our previous solution. With such a safe storage and backup function, the redundancy of the system is greatly increased."

"It depends on how the control software is designed. If the software is well designed, then this solution will be more feasible..."

The engineers in the audience talked a lot.

Ren Zhengfei turned his head to the side, and said with a smile to Zheng Bao beside him: "Old Zheng, what do you think?"

With sparkling eyes, Zheng Bao said: "This plan is very good, this young man has something!"

On the other side, Li Yinan looked at the writing on the whiteboard thoughtfully.

He had to admit that there was something about this young man on stage.

Pang Xuelin didn't care about the reaction below, but continued his explanation.

"Next, let's talk about the communication control module (CCM). The communication control module is the core of inter-module communication. There are two independent frame switching network planes, called plane 0 and plane 1. Each plane consists of a BA board, Two planes share one motherboard. Each CCM plane can provide 56 HWs of 2.048Mbit/s, with a total HDLC switching rate of 112Mbit/s, and the rate of each channel is 64kbit/s~2.048Mbit/s."

"CCM module includes secondary power supply board PWS, frame switching network board FSN, bus management control board BA board flexibly configured according to the number of interface boxes and business processing boxes, at least two. FSN is used to realize HDLC signaling of multiple HDLC channels Link exchange can provide up to 16 2MHW. The BAC board is responsible for completing the channel configuration and bus arbitration of the frame switching network of the communication control module, and monitoring the working status of each board in the communication control module. The BAC board also has a frame switching function , can provide eight 2MHW, which has the function of half a FSN board."

...

"Finally, let's talk about the central switching network. The central switching network is a fully utilized network. The maximum capacity is 128k×128k. The actual installed capacity can be superimposed in units of 16k×16k between 16k×16k~128k×128k, and at 128k×128k It can be expanded smoothly under the capacity of 128k. The switching network system of the digital program-controlled switching system is a three-level network structure, which is composed of the input level of the edge switching network, the central switching network and the output level of the edge switching network. The central network is composed of 16 8k single T network units , every two 8k single T network units are placed together on a single board, which is called the central network unit board (U board), to complete the central switching of the 128k network, that is, to complete the second-level switching of the service switching network. Edge The network consists of 64 4k single-T network units, and every eight 4k single-T network units are placed on a single board, which is called the edge network unit board (SNU board), and completes the edge-level switching of the 128k network. Four constitute the first-level switching network, and the other four constitute the third-level switching network."

"As for the specific structural composition of the central switching network, the central switching network frame occupies the positions of two standard frames, and has a large motherboard structure. The (network communication control) board is the control board of the entire ET, which completes time slot allocation, networking operations, and communication with The communication function of other modules. BDR is a bus driver board, which provides a control bus for NU and SNU boards. PWS is a high-power power supply board, which can provide 300W/5V power output. Other single boards are active and standby. The U board must Full configuration, otherwise there will be congestion. The SNU board is determined according to the capacity, and it can be appropriately reduced..."

Throughout the morning, Pang Xuelin was explaining the hardware design.

Pang Xuelin listed everything from the overall structure of the program-controlled switchboard to the location of the chassis, the installation of circuit boards, and various redundant designs that no one had considered.

By this time, the Huawei engineers in the audience had no doubts in their eyes.

Even Li Yinan, who was not convinced, copied Pang Xuelin's design as honestly as a primary school student.

"Mr. Ren, where did you find such a big treasure?"

Zheng Baoyong couldn't help sighing.

When Ren Zhengfei paid such a high price to hire this young man, Zheng Baoyong still had doubts.

After all, now that Warwick's cash flow is so tight, if we allocate another one million cash to this young man, there will not be much funds left for the research and development of program-controlled switches.

But in the morning, Pang Xuelin's performance completely dispelled Zheng Baoyong's doubts.

As an experienced engineer, Zheng Baoyong is very clear about the technical difficulties of program-controlled switches.

With the current domestic industry level, it is very difficult to design a qualified program-controlled switchboard.

However, the solution given by Pang Xuelin has an exquisite structure, detailed details, and a very high degree of maturity, even compared with the products of leading foreign communication equipment manufacturers, it has many unique features.

A satisfied smile appeared on Ren Zhengfei's face. There is no doubt that Pang Xuelin's performance throughout the morning has completely dispelled everyone's doubts.

After roughly explaining the design of the program-controlled switchboard, Pang Xuelin smiled and said, "Do you have any questions?"

Everyone in the audience looked at each other in blank dismay, and they were not fools. No one in the entire Warwick Company could do this level of design.

It will take a while for everyone to fully digest and understand, let alone ask questions.

For a while, the meeting room was involuntarily quiet.

At this time, Li Yinan slowly raised his hand: "Mr. Pang, I am Li Yinan from the R\u0026D department. I would like to ask when the design plan of the software system will be explained?"

Pang Xuelin couldn't help being taken aback, he didn't expect that the tall, thin, fair-faced boy in front of him was Li Yinan.

He thought for a while and said, "It's afternoon. This afternoon, I will share with you the algorithm of the two thousand program-controlled switches."

"Then I'm fine."

Li Yinan sat down.

"Okay, it's almost time, everyone go to eat first, let's come over and talk after dinner."

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