Method for implementing 2G/3G circuit domain called service in LTE (Long Term Evolution) PS (Packet Switched) connection state

Abstract

The invention discloses a method for implementing a 2G / 3G circuit domain called service in an LTE (Long Term Evolution) PS (Packet Switched) connection state. The method comprises the following steps that: after a paging message of a 2G / 3G cell is received in a receiving process in a 2G / 3G IDLE state, an upper layer unit of a terminal gives an antenna switching command to an LTE physical layer; when the antenna switching command from a terminal upper layer is received, the LTE physical layer modifies the antenna measurement configuration of downlink CPR (Channel Quality Indicator / Precoding Matrix Indicator / Rank Indicator) measurement; the LTE physical layer performs the downlink CPR measurement under the antenna measurement configuration to generate a measurement result to be reported to a network side; after update configuration information specific to the measurement result from the network side is received, the LTE physical layer updates reception configuration in order to adapt to the data transmission mode of single antenna reception; the LTE physical layer receives a signal from the network side by adopting the updated reception configuration; the terminal upper layer controls switching of terminal antenna connection ways under the situation that the LTE physical layer updates the reception configuration; and a response is made to the circuit domain called service in the 2G / 3G cell. Through the implementation way, the quality of mobile communication services can be ensured.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method for realizing 2G / 3G circuit domain called service in the LTE PS connection state. Background technique [0002] With the vigorous development of various Internet applications, the existing third-generation (3G, 3Generation) communication network can no longer meet the growing needs of people. Wireless communication systems are increasingly showing the development trend of mobility, broadband and Internet. Under this situation, LTE (Long Term Evolution, 3GPP long-term evolution project), as the fourth generation (4G, 4Generation) communication technology, has become the future The direction of network evolution. [0003] The LTE network is based on the Internet Protocol (IP, Internet Protocol) architecture, and can only provide voice over IP (VoIP, Voice over IP) services based on the packet domain (PS, Packet Switched). and service control capability, therefore, the I...

AI Technical Summary

Problems solved by technology

[0008] Furthermore, compared with single-standby mobile communication terminals, the printed circuit board area of ​​mobile communication terminals with dual-standby capabilities will also increase, and the screens of mid- and low-end mobile communication terminals currently on the market are generally 4.0" and below. This brings challenges in design, especially for manufacturers with strict industrial design requirements.

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