Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and system for increasing efficiency and success rate of CS (circuit switched) fallback

A voice fallback and efficiency technology, applied in the field of LTE system, can solve the problem of not giving eNB processing priority, etc., to achieve the effect of ensuring timeliness and success rate, and improving efficiency and success rate

Active Publication Date: 2012-11-14
ZTE CORP
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the 3GPP TS (Third Generation Partnership Project Technical Specification) 36.413 protocol, both the CS Fallback indicator and the Security Key are optional cells that can be carried at the same time, but the protocol does not specify the time when two business processes run in parallel. eNB processing priority

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 system for increasing efficiency and success rate of CS (circuit switched) fallback
  • Method and system for increasing efficiency and success rate of CS (circuit switched) fallback
  • Method and system for increasing efficiency and success rate of CS (circuit switched) fallback

Examples

Experimental program
Comparison scheme
Effect test

application example 1

[0053] When the eNB receives the UE context modification request issued by the MME and carries the CS Fallback Indicator and Security Key at the same time, when it needs to perform PS HO after the judgment, if image 3 As shown, the following steps will be performed:

[0054] Step 101: The eNB decodes the UE Context Modification Request message, and saves related information elements;

[0055] Step 102: The eNB determines that the UE context modification request message contains the CS Fallback Indicator information element, and directly replies a context modification response to the MME in the EPC;

[0056] Step 103: According to the UE support capability, if the eNB judges that there is a Grean / Utran target cell that supports PS HO, it will send a Handover Required (handover request) message to the MME to request PS handover, and package and transparently transmit the reconfiguration message UE;

[0057] Step 104: After receiving the Handover Required message, the MME will...

application example 2

[0063] When the eNB receives the UE context modification request sent by the MME and carries both the CS Fallback Indicator and the Security Key, and decides to perform CCO later, if Figure 4 As shown, the following steps will be performed:

[0064] Step 201: The eNB decodes the UE context modification request message, and saves related information elements;

[0065] Step 202: The eNB determines that the UE context modification request message contains the CS Fallback Indicator information element, and directly returns a context modification response to the MME in the EPC;

[0066] Step 203: According to the UE support capability, the eNB judges that there is no Grean / Utran target cell that supports PS HO, but CCO can be implemented;

[0067] Step 204: The eNB sends a MobilityFromEUTRANCommand message to the UE, which carries a CS Fallback Indicator information element, and the value of the purpose field in the information element is CCO, indicating that the UE is the CCO in...

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 method and a system for increasing the efficiency and success rate of CS( circuit switched) fallback. The method, which is applied in an evolved node B (eNB), includes the following steps: receiving the context modification request message of user equipment; and if judging that the context modification request message of the user equipment carries a CS fallback indicator cell and a security key cell, then starting a CS fallback processing flow. The system, which is applied in the evolved node B, comprises a first device and a second device; the first device is used for receiving the context modification request message of the user equipment; and the second device is used for starting the CS fallback processing flow if judging that the context modification request message of the user equipment carries the CS fallback indicator cell and the security key cell. After the invention is adopted, the eNB can effectively increase the efficiency and success rate of CS fallback as a key is updated, thus effectively guaranteeing the timeliness and success rate of voice service.

Description

technical field [0001] The present invention relates to an LTE system, in particular to a method and system for improving the efficiency and success rate of voice fallback (CS Fallback). Background technique [0002] CS Fallback is a method that is applied when the E-UTRAN network and the GERAN (GSM EDGE Radio Access Network, GSM wireless access network) / UTRAN (UMTS Terrestrial Radio Access Network, Universal Mobile Telecommunications System Terrestrial Radio Access Network) network have the same coverage. A technology that falls back the user-related CS domain voice service establishment request that already resides in the LTE (Long Term Evolution, Long Term Evolution) network, and establishes it in the CS domain of the GERAN / UTRAN network. [0003] In the initial stage of LTE network deployment, the coverage of 2G / 3G network is much larger than that of LTE network. For networks without IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) or networks that do not support V...

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
IPC IPC(8): H04W12/04H04W36/00H04W12/041H04W12/0431
CPCH04W12/04H04W36/0022H04W12/0433
Inventor 黄晶李静岚
Owner ZTE CORP