71results about How to "Improve call rate" patented technology

The invention discloses a pseudo base station identification method, device and terminal, which belong to the technical field of communication. The method includes: when a first call request is received in a first serving cell that cannot perform a circuit domain service, redirecting the terminal to a target cell that can perform a circuit domain service; when the stored multiple LAIs do not include the target cell When the LAI is determined, a location update request is sent to the base station where the target cell is located, and multiple LAIs are sent by the base station where the first serving cell is located; when the location update request does not receive a response from the base station where the target cell is located within the first preset time period, And when the time interval at which the base station where the target cell is located instructs the terminal to update the location is greater than the second preset duration or less than the third preset duration, the base station where the target cell is located is determined as a pseudo base station. The invention improves the accuracy of identifying the pseudo base station, thereby preventing the terminal from incorrectly camping on the cell of the pseudo base station, ensuring normal calls to the terminal, and effectively improving the call-through rate.

The invention discloses a method for measuring the interference from adjacent cells in the downlink direction based on a CDMA system. The method of the invention comprises the steps that: 1) the RSSI of a carrier frequency where a target cell locates is obtained when UE is switched; 2) the transmission code power (TCP) of the base station of a source cell to the UE and the interference to the UE by other users of the cell are then obtained; 3) when the UE is switched to a target cell with the same frequency, the interference from the adjacent cells in the downlink direction to the UE is RSSI - the transmission code power (TCP) of the base station of the source cell to the UE - the interference to the UE by other users of the cell; 4) when the UE is switched to a target cell with the same frequency, the interference from the adjacent cells in the downlink direction to the UE is RSSI - the interference to the UE by other users of the cell. By adopting the method of the invention, the accuracy for measuring the interference from downlink adjacent cells of the CDMA system can be improved, thereby improving the accuracy for estimating the algorithm of downlink admission control and open-loop power control during the process that the UE is switched and also effectively improving the call completion ratio and the stability of the system.

The invention relates to a telephone calling method and device and a terminal. The method comprises the steps that a calling starting message is sent to a network; a timer is started to start timing when the calling starting message is sent; whether a response, showing successful access, of the network is received within a set time or not is judged, wherein the set time is larger than the calling starting interval time; when the response of the network is not received within the set time, or the response shows unsuccessful access, a calling release message is sent to the network, the timer is reset, and the step of sending the calling starting message to the network is executed; if a response, showing successful access, of the network is received within the set time, telephone calling is completed. The method can rapidly judge whether calling is rejected by the network or not responded due to a network signaling error, therefore, rapid recalling is conducted under corresponding conditions, the call completion rate of a telephone is increased, and the user experience is improved.

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.