Study Of Collaborative Optimization And Packet Resource Allocation For GSM Network

After 2000, Mobile business has made a spurt of progress, mobile phone penetration rates obtained rapid development. And after 2004, along with the GSM network traffic, especially the rapid growth of data traffic, the GSM network is more and more busy; the wireless utilization rate is growing, low efficiency of the data traffic channel, and a high percent of half rate, all of that make negative effect to user perception.With the Unconventional growth of the data traffic in the GSM, the user is growing, the single user traffic is growing, the usage of GSM network at a very high level. On the contrary, more data traffic doesn't bring more income although it is taking much more resources, there are more and more complain about either in voice service or data service, rigid thought during the network planning and network optimization, which brings hidden danger to the development of the network, and it is necessary to make a thorough investigation of the problem then solve them.The GPRS is a transition technology between 2G and 3G which has developed fully, with the growth of scale of GSM network, more users, it is growing every day. No matter the achieved of united paging, or the power control of downlink in data traffic, they are all based on the demand of users, but GSM is a technology of FDMA and TDMA, it's strength doesn't match market's ambitions, one day, it will be replaced by the next generation network, so during this critical period, it is necessary make a maximum usage of the technology to serve our customer, and it is necessary to optimize GSM collaboratively.The optimization of GSM is becoming more complicate and difficult with the joins of GPRS, GSM network only carries voice, GPRS carries data service by using the same resources, so we must consider both GSM and GPRS, which are exist at the same time and restrict each other. Consistency is embodied in the following aspects, they use the same channel, although GPRS uses access network of GSM, it will newly adds SGSN, GGSN and so on, also many interfaces between them. Wireless environment makes major influence to data travel, the rate is high when the environment is good, and the speed of internet is high, otherwise is slow, Seriously, user can't connect to the internet although it has retransmission and QOS security. The optimization of GPRS is based on the optimization of GSM. GPRS will take influence to the GSM network, first, data will send in full power, it has no power control, which will bring more white noise to the GSM, the quality of voice will become worse, call drop rate will grow, the success rate of connect will drop, the success rate of handover will drop. Second, because GPRS will obtain the resource of the GSM, the capacity of GSM will become insufficient; there will be more PDCHs in the network which lead to the drop of success rate of connects. The third, GPRS uses the same channel of GSM which brings a high level of occupancy rate of the access channel. The fourth, it becomes more and more difficult to make a balance between the fluctuation of voice and data traffic, we should consider both of them when making a plan of network, also in access channel plan. The fifth, because of the quality of GPRS is based on C/I, the quality of GSM is base on the ACCMIN, during the planning, and we should make the minimal result to avoid blind area exists.The paper aims to find a way to provide better services for users by balance the volume of business and income. To build the network development stage of the network operation analysis system, discusses in detail the current data networks in the presence of the multiple influences customer perception problems, and analyze different problems in depth, and puts forward the corresponding preventive measures and solutions. The solving measure of the paper is put forward on the basis of experience summary and practice, and has a widespread practical significance, based on these measures and solutions, the optimizer will find the problem quickly. It saves time, improves efficiency. By the way of PDCH promotion, the optimization of access channel, key function in progress and so on, the service quality is improved, the operation costs less, the complaints of customer reduced, and it has good economic value, provides the decision making basis.