[Reprint] talking about lbs (location-based service)

From: http://www.cnblogs.com/Tangf/archive/2006/07/17/452498.html

Recently, several of my friends talked to me aboutLbsI also wanted to talk about my personal views, but later I looked at what I saved a few years ago.LbsAfter the materials, I felt that I had nothing to say, so I had to take this articleLbsOf course, it will also be mixed with what I personally see and think.

What isLbs

lbs , Location Based Services , is a location-based service. lbs is based on geographic information Technology . It positions physical locations on electronic maps. , the Spatial Information Service ( note: this sentence is taken from Telecom new value-added services lbs) . Botong Zhixin released the Chinese location service (lbs) for a long time) business market analysis report, report China lbs business 2006 in the second half of the year, it will enter the high-speed growth period. Unfortunately, I have never seen this report ( Of course, I don't have the money to buy such a so-called report. ) . However, we can see some summary and directories.

In daily life80%The location information is related to the location, which is sufficient to see the importance of the location. Here is a simple example. For example, if I want to go to Miyun Road in Hongkou this morningMobile phoneQuery the bus lines from here to Miyun Road. I wanted to get some money in this place when I was switching, so I took out my cell phone and checked the one closest to me.ATM. At Miyun road, my friend told me where he was and where he was. He took out his cell phone. My location was clearly displayed on the map and looked up his location, after walking a little bit, I found my friend. After chatting with my friend, I said where to go for dinner. I took out my cell phone and checked the latest restaurant. I also liked it by taste, price, and praise.CommentAfter sorting, we went home for dinner. If I do notLbsService, then I may first find the bus route on the Internet. If I get the money, I will first find out where the bank is most convenient. If I have dinner, I will first check the hotel's favorable prices online. WhileLbsAllows you to arrange all this at Will anytime, anywhere.

IfLbsWhen does it appear? It can be said that it was very early,01In, Mobile launched the location service based on mobile dream,03In, China Unicom launched the positioning star service. I have never tried any of these services. If you have any friends, you are welcome to express your comments. I personally think that the location service provided by the two major network providers should also be relatively far-fetched. I guess this is the case. The customer informs the service provider's location via text message, ask the service provider for information about the restaurant around the location, and soon receive the information about the restaurant sent back by the service provider. A maximum of images can be provided. I feel like a relatively old and Rigid service. My personal hope is to achieveGPSSimilar display query and other functions(This may not be possible from the current mobile phone hardware, but it will certainly be true in the future.).

Lbs Same GIS , GPS And WebGIS What are the differences? Personally, Lbs Yes GPS Locate your location in real time and GIS The services displayed on the system, of course, include extended information services. GIS Is the underlying layer and is indispensable, GPS Important: Highlights real-time performance ( This real-time performance is manifested in your location in real time, and the information you need to know is real-time. ) However, I personally think the most important thing is Lbs In S Above, services and services are the first and most important. GIS , GPS The most important difference is that S Above. And WebGIS The difference is even more obvious, that is, the real-time performance cannot be achieved.

LbsHow big is it?ApplicationHow many people orIndustryYesLbsWhat about it? Personal applications: emergency assistance, tracking and monitoring, information query, entertainment games, discounts and promotions. Industrial Applications: leasing industry, logistics industry, postal system, and traffic police system. Of course, I personally think there are still many applications, focusing on requirements.

LbsArchitecture and composition

LbsNetwork Architecture:

(1)Locate the operating platform. Various positioning technologies are used to obtain the location information of the Mobile Station.

(2) LCsMiddleware. DirectionSPProvides the locating service interface,SPPassLCSMiddleware accesses carrier's positioning resources(GIS)And completeLbsService billing, management, and other functions.

(3) GISSystem. Provides variousLbsThe geographic information service of the application, including the map service, path search, and directory query.

(4) SP. Provided for end usersLbsService.

(5) CP.CPProvides electronic map data,Poi (Point of interest)Information Content Provider.

(6)Terminal. You need to interact with the network to complete the positioning operation(Obtain the latitude and longitude of a terminal), ThroughWAP/Java/brew/SMSAndSPInteraction to obtain the final service. For the vector map service, the terminal requires a built-in vector map browser.

I prefer to understand the above architecture Lbs In addition to the terminal, I personally think that every other link is Lbs A small piece of cake in this big cake. It is basically impossible for a person or company to eat such a big cake. Therefore, it is divided into many small cakes for many people to eat. Now we can see who and what company choose to eat the cake, the ability to eat cakes is a big test. In the first positioning stage, there are several modes in positioning technology. ( Network-based positioning technology to assist GPS Technology (Agps) , Hybrid positioning technology, based on the Mobile Station GPS Locate. From Lbs Positioning Technology and GIS System ) Choosing a technology means cooperating with different providers. Individuals do not like mobile or Unicom-based technology, because of their big names, they chose such a technology, which means that mobile or Unicom took the lead. ( I may have mentioned it a bit here, but I am really disgusted with the behavior of playing big names like China Mobile and China Unicom. It may be my personal understanding. ) . The second step may be relatively simple. I am not very familiar with it and will not make any comments. The third step is important. It should be related to engines and applications. In the fourth step, the service provider is directly oriented to the customer. What is important is the promotion and sales of the service provider. Step 5: information providers are important and have a high threshold, because regular map companies have a high map threshold. ( Refers to the capital part. ) . While Poi Some companies do not know much about good or bad people. However, this is also a detailed development direction and worth considering.

ImplementationLbsBusiness problems

ImplementationLbsBusiness problems:(1)Positioning accuracy.(2)Collection and organization of location information.(3)Vector map browser.

I like to focus on the problem. First, for positioning accuracy, for GPS , I personally think it is quite confident, because the error of about 10 meters should still be acceptable. However, for network-based, the positioning accuracy may be poor, and of course there are also optimizations. Of course, the positioning accuracy is also different from the application. For individuals, even dozens of meters of error can be accepted, but for example, the positioning accuracy of the traffic police system may be relatively high. The second part is the collection and organization of information. Here it should be CP sp or GIS system providers can perform CP , this is because you can allow the terminal to add information and collect the information ( many WebGIS wiki the service or custom point service should be like this ) . The collection organization of information is indeed a very huge project and requires at least a lot of manpower. Third, the vector map browser is the map engine, which is of course the key here. If you cannot provide the customer with intuitive Map Display and other functions, the customer will definitely not buy it.

Development Direction

The above is relatively simple. I hope I can add more information next time. Below I will summarize some of my personal development directions.

(1 ).Information provider

From the above text, we can see that the information provider has a map data provider,Poi (Point of interest)Providers. For map data providers, I personally think it is basically impossible to squeeze on, because the current national map data market requirements are standardized, there are now nine map qualified in China, when purchasing map data, you need to ask the nine companies to purchase it. It is against the law to purchase a map from a private company or to sell it to a private company, of course, the mainland map market is only in its infancy and there is no real specification. Therefore, many users buy private map products. It is because the mainland map market started, so the entry threshold is relatively high, the company that can obtain qualifications must have been through years of accumulation, the company has at least a few hundred people engaged in the roadIngGraphics and other work, and a large number of personal computers are required to collect and plot organizational data and many servers to store data, the hardware cost will not be low. So many map companies are shouting that they are not making money. In reality, do you dare to rush to become a map data provider?

So what is the way out? Since basic data cannot be created, you can customize the data. Here, personalized data is called rich information or rich points of interest, that is Richpoi ( It should be said that this rich content is rich, for example, it is quite popular now. Ria , Enrich Internet applicationsProgram ) . Where are the rich? Point of interest, only one name and coordinate can be called a point of interest, and rich points of interest, the difference is that it contains rich information, such as telephone, address, profile, pictures, and so on, can be used as rich information. For example, for an ordinary restaurant, I know it's called Su zhehui Jingan, located in yan'an Middle Road. 1121 No. ( Near Huashan Road ) The coordinates can also be known, but such a point of interest users are not interested, and feel monotonous and boring. What if it is a rich interest point? I added a brief introduction to it, user evaluation, card dish recommendation, taste, environment, service and other indicators and prices, and took photos of their stores, internal furnishings, and card dishes, such rich information users are certainly interested. For such rich information, merchants ( Point of interest ) It is also very interesting. Now that you are here, let's get them together. I am charged for interest points. ( Not necessarily high, but can win from the number ) , And cooperate with many service providers to promote these rich points of interest to a large number of users, and even charge part of the service provider or user fees ( Some users may be charged by service providers, and service providers can also adopt cooperation models. ) .

The rich information mentioned above is only one direction, and of course there are dynamic information and other directions. To give a simple example, there is a company in Shanghai that specializes in parking services. There are dedicated websites, dedicated Customer Service personnel, and voice telephone services, the parking space information is chained and real-time information. Car Owners only need to log on to their website or use a voice phone to know where the parking lot is full and where it is empty, it brings great convenience to the car owner, but I still don't know the degree of use. From the usage of the table in Shanghai, I still feel less optimistic about this service, at least at this stage. Therefore, I do not think this kind of information is of great value yet, but dynamic information must be a direction. dynamic information such as parking and traffic congestion must be a pioneer, however, the utilization value of other dynamic information with relatively poor real-time performance is not very high.

Because I am familiar with the data, I will talk a lot about it here.

(2 ).Technical provider

Technology providers can provide positioning, engine, application development, and other technical directions. I personally think that the engine is the key, although it is not difficult to say. HoweverC/SOrB/SMode, it is hard to say, because the so-called2.5 GBIn terms of network, this model will inevitably bring about an increase in costs, and here the most happy is the network provider such as mobile and Unicom. In addition, you need to consider hardware providers and system providers. Of course, the hardware providers are the most happy. You cannot develop on the hardware platform I provide, the system platform may also be involved, suchWindows MobileAndSmartphomeAndPlamAnd so on, the degree of technical difficulty will also be different.

I want to talk about something more, but I think it's messy. I hope some technical staff can help me.

(3 ).Service Provider

Not to mention, there are two words: Market.

I hope many people can eat and eat this cake well.