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Circuit switched fallback method and device

A circuit domain fallback, a single technology, applied in electrical components, wireless communications, etc., can solve problems such as voice services cannot be realized, call failures, and user perception are affected, so as to improve user perception, reduce connection delay, and improve connection The effect on success rate

Active Publication Date: 2016-08-03
CHINA MOBILE GROUP ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, frequency point measurement will bring a certain network delay, which will affect user perception; at the same time, if the signal of the cell is the strongest but the state is abnormal, there are problems such as alarms, congestion, or voice quality, normal communication cannot be achieved. Voice service, resulting in call failure

Method used

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  • Circuit switched fallback method and device
  • Circuit switched fallback method and device

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Embodiment Construction

[0025] In the embodiment of the present invention, the ESR sent by the terminal is received, and it is judged whether the terminal satisfies the condition for issuing a single frequency point; The terminal; when it is determined that the condition for issuing a single frequency point is not met, obtain frequency point information of the priority cell, and instruct the base station to deliver the frequency point information of the priority cell to the terminal.

[0026] figure 1 It is a schematic flow chart of the method of CSFB in the embodiment of the present invention, such as figure 1 As shown, the method flow of CSFB in the embodiment of the present invention includes:

[0027] Step 101: receiving the ESR sent by the terminal, and judging whether the terminal satisfies the single-frequency sending condition;

[0028] Before this step, the terminal resides in the LTE network and has a voice service requirement, and sends a CSFB request to the base station eNodeB to establ...

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Abstract

The invention discloses a circuit switched fallback (CSFB) method comprising the following steps: receiving an extended service request ESR sent by a terminal, and judging whether the terminal meets a single-frequency down-sending condition; when determining that the terminal meets the single-frequency down-sending condition, instructing a base station to send the frequency information of a first cell down to the terminal; or, when determining that the terminal cannot meet the single-frequency down-sending condition, acquiring the frequency information of a priority cell, and instructing the base station to send the frequency information of the priority cell down to the terminal. The invention further discloses a CSFB device.

Description

technical field [0001] The present invention relates to the technical field of Long Term Evolution (LTE, Long Term Evolution) wireless network and core network, and in particular to a circuit domain fallback (CSFB, Circuit Switched Fallback) method and device. Background technique [0002] There is no voice service on the existing LTE network, and the way to realize the voice service is usually to use CSFB technology to drop the voice service to the second generation mobile communication technology (2G, Second Generation) or the third generation mobile communication technology (3G, 3rd- Generation) on the network. When the terminal resides on the LTE network and needs to perform voice services, it needs to release the LTE network resources first, and then measure the frequency points of these adjacent cells according to the configured frequency points of 2 / 3G adjacent cells; and then select the strongest signal according to the measurement results The cell performs cell syn...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/14
Inventor 郑国惠汪亚峰徐勇胡国峰吕晓锋田钢锋
Owner CHINA MOBILE GROUP ZHEJIANG
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