57results about How to "Reduce call loss" patented technology

The utility model discloses an detection method for detecting the abnormal network nodes. The method arranges the link status zone bit in the communication program; as the communication program starts up, the examination thread is established to examine each link in the link information table, so as to check for the network nodes which are correspondent to the link. If the link status zone bit thereof is under running state and the difference between the present time and the link's message sending time is no less than the pre-set value, the link's correspondent network nodes are judged as abnormal. So, the link shall be closed and informed to the upper level; or, the next link shall be examined. The utility model can conduct the judgment before receiving the other side's heart-beat messages or recv function return or send function return, so as to greatly shorten the testing time used for detecting the abnormal conditions of the network nodes. Also, the call loss is reduced.

The invention discloses a method for improving the reliability of location update in a wireless local telephone system. The core idea is to save the information of the user's previous call area on the HLR, and set a state machine on the HLR to identify each state in the location update process. According to the judgment of the message reported by the BSC, the state transition and corresponding processing are carried out. When the call area information error caused by the incomplete location update process, the HLR will actively initiate the location confirmation process to the user. By adopting the method of the present invention, the reliability of the location update process in the wireless local telephone system is improved, the problem of wrong calling area information caused by message loss is largely avoided, and the call loss when called is reduced. It improves the call rate of the whole system and the satisfaction of users, and at the same time reduces the workload of system maintenance personnel.

The invention relates to a method to select an application-layer controllable No. 7 signaling dynamic route, a network-layer uses a route table to dynamically select an available signaling route, the method also includes that the application-layer sends request information to the network-layer; the network-layer feeds back to the application-layer the route selecting result which corresponds to the request information; the application-layer adjusts the route table according to the route selecting result and the content of the route table. The method, based on the prior protocol, feeds back the route selecting result to the application-layer through the network-layer, the application-layer does not change the selecting way of the prior route and just decides whether the dynamic route selecting range is adjusted according to the information processing condition, thereby realizing the method to select the application-layer controlled No. 7 signaling dynamic route. The method solves the problem that the application-layer can directly adjust the selection-awaited No.7 signaling route when the information route is not successful or can not meet the requirement of the application-layer, and reduce the unnecessary call loss; the method is the beneficial supplement and perfection of the prior signaling route.