Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for circuit domain fallback

A circuit domain fallback and execution circuit technology, applied in electrical components, wireless communications, transmission systems, etc., to achieve the effect of reducing call delay

Active Publication Date: 2019-04-05
HUAWEI TECH CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the prior art, there is no technical solution for initiating a CS call or receiving a CS call after switching from the PS domain to the CS domain and returning to the CS domain

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for circuit domain fallback
  • Method and device for circuit domain fallback
  • Method and device for circuit domain fallback

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0057] During Single Radio Voice Continuity (SRVCC), the UE is calling for VoIP on the LTE side and CS calling on the 2G / 3G side. When it is necessary to fall back the VoIP call on the LTE side to 2G / 3G, the eNB initiates a PS to CS call. The handover request message is sent to the MME, the MME initiates SRVCC handover, the MSC initiates the session transfer process, the MSC sends a PS to CS handover response message to the MME, the MME sends a handover command to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a circuit domain fallback method, UE, MSC and MME. The method includes: the UE sends a request message requesting to perform CSFB to the MME; the UE receives a handover command sent by the eNodeB, and the handover command instructs the UE to switch from the PS domain to the CS domain; after the UE switches to the CS domain according to the handover command, Release or maintain the default CS call of the UE, where the default CS call is generated by the UE according to the handover command; the UE initiates a CS call or receives a CS call through the MSC. According to the circuit domain fallback method of the embodiment of the present invention, the UE, MSC and MME can implement circuit domain fallback by switching the UE from the PS domain to the CS domain and reduce the time delay.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, relates to a circuit domain fallback method, a user equipment (User Equipment, UE), a mobile switching center (Mobile Services Switching Centre, MSC) and a mobility management entity (Mobility Management Entity, MME). Background technique [0002] After years of deployment, 2G / 3G networks can be regarded as a comprehensive coverage to some extent. With the evolution of system architecture (System Architecture Evolution, SAE) / long-term evolution (Long Term Evolution, LTE), high-speed packet access (High Speed ​​Packet Access, HSPA), HSPA+ and the development of Worldwide Interoperability for Microwave Access (WiMAX) network technology, these networks have covered some urban areas and traffic hot spots, resulting in the current communication network , these networks coexist with 2G / 3G networks. For the convenience of description, SAE / LTE, HSPA, HSPA+, WiMAX, etc. that onl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/14
CPCH04W36/00224H04L65/1096
Inventor 吴晓波刘海张达亮王新勇韩耀伟
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com