gsm网络处理小区话务拥塞的几种方法（Several methods of dealing with traffic congestion in GSM network）.docVIP

gsm网络处理小区话务拥塞的几种方法（Several methods of dealing with traffic congestion in GSM network） Traffic congestion in mobile communication network is an important problem, it will seriously affect the quality of network congestion, caused by mobile phone unable to connect to the Internet, to call or call and Short Message difficult problems, more congestion will seriously affect the reputation of the network, from the economic terms will make the loss of a large number of calls, so to solve the traffic congestion in GSM network is a key step in network optimization, network image construction and healthy development of enterprises. Causes and solutions of traffic congestion in GSM networks 2.1 reasons for TCH congestion TCH refers to the mobile phone access congestion process for TCH channel, MSC confirmed to BSC issued Assignment Request signaling, BSC queries the TCH channel resource, when no TCH resources, BSC will reject the request, and statistics for a congestion. Usually the main cause is: channel blocking traffic density high, exceeding the design capacity of the base station equipment; hardware failure, such as due to a lack of available resources, equipment instability caused by adjacent cell channel congestion; fault; LAC planning is not reasonable, such as the boundary of the LAC in the high zone, the main road is then more customers mobile and frequent area, the location update too frequently formed call model is not reasonable, reduce the system capacity of wireless parameter setting is not reasonable. Such as cell reselection, delay, switching, tolerance, cell cut, trigger level and other definitions caused by unreasonable table tennis table update and table tennis switch; coverage is too large, there is island phenomenon. 2.2 TCH congestion solution Carrier frequency expansion: increasing the number of carriers is the most effective and persistent way to solve congestion. First, we analyze the relationship between the number of TRX and the congestion of ERL as