Unlock instant, AI-driven research and patent intelligence for your innovation.
A method and system for reducing call drop rate of CS service
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for call drop rate and service, which is applied in network traffic/resource management, electrical components, wireless communication, etc., and can solve the problems of CS service call drop and sensitive user experience.
Inactive Publication Date: 2018-07-06
ZTE CORP
View PDF5 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
When the CS service and the PS service are concurrent, if an RLC unrecoverable error occurs in the downlink of the PS service, the RNC can release the PS service in advance to prevent the CS service from being dropped due to the existence of the PS service; RLC unrecoverable error, then the UE will transfer to the CELL_FACH state, which will inevitably lead to CS service call drop
The CS service usually has a higher priority, and the user experience will be more sensitive. Therefore, it is necessary to avoid the CS service call drop caused by the coverage problem of the PS service when the CS service and the PS service are concurrent.
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0103] In this embodiment, the UE is performing CS service and PS service at the same time, and both CS service and PS service are mapped to the DCH channel, and the configuration of the DCH channel and the E-DCH channel has been distinguished: the timing duration of the uplink reset timer (UL_Rest_Timer_DCH) of the DCH channel 6 seconds, and the uplink reset timer (UL_Rest_Timer_E-DCH) of the E-DCH channel is timed for 4 seconds. This embodiment implements a method for reducing the CS call drop rate when the CS service and the PS service are concurrent, such as image 3 As shown, the method includes the following steps:
[0104] Step 201: when the Node B detects that the CRC of the PS data block sent by the UE is wrong, it sends the FP frame carrying the CRCI to the RNC through the IUB interface;
[0105] Step 202: The RNC receives the FP frame carrying the CRCI, monitors that the RLC PDU numbered 2 in the RLC layer receiving window in the UE context has not been received, a...
Embodiment 2
[0113] This embodiment describes the processing procedure of the UE receiving the RB release message and the subsequent CS service is not released, such as Figure 4 shown, including:
[0114] Step 301: The UE receives an RB release message carrying a Backoff timer;
[0115] Step 302: UE starts the Backoff timer;
[0116] Step 303: UE has a PS service transmission requirement, and detects that the Back offtimer has been started, then does not initiate a PS service call request to the network side;
[0117] Step 304: The UE detects that the Back offtimer has expired, and initiates a PS service call request to the network side.
Embodiment 3
[0119] This embodiment describes the processing procedure of the subsequent CS release after the UE receives the RB release message, as shown in Figure 5, including:
[0120] Step 401: UE receives the RB release message carrying the Backoff timer;
[0121] Step 402: UE starts the Backoff timer;
[0122] Step 403: The UE detects that the CS domain service is released, and clears the Back off timer;
[0123] Step 404: The UE detects that there is a need to send the PS service, and detects that the Back off timer is not started, and initiates a PS service call request to the network side.
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
Login to View More
Abstract
The invention discloses a method for reducing the call drop rate of a conversational service (CS). When a node B detects that the PS data block sent by a user equipment (UE) concurrently with a CS and a packet service (PS) is abnormal, it notifies the wireless Network controller (RNC); The RNC counts the number of retransmissions of the RLC protocol data unit (PDU) that has not been received in the radio link control (RLC) layer receiving window in the UE context and has the smallest number; RNC judges When the number of retransmissions of the RLC PDU reaches the maximum number of PDU retransmissions, the uplink reset timer is started; when the uplink reset timer expires, the RNC releases the PS service of the UE; the present invention also discloses a method for reducing CS The system, terminal and core network of the service call drop rate can process the PS service in advance when an RLC unrecoverable error occurs in the uplink of the PS service through the solution of the invention, so as to ensure that the CS service continues to maintain communication.
Description
technical field [0001] The present invention relates to wireless communication technology, in particular to a method, system, terminal and core network for reducing the CS service call drop rate when a conversational service (CS, Conversational Service) and a packet service (PS, Packet Service) are concurrent. Background technique [0002] The WidebandCode Division Multiple Access (WCDMA) mobile communication system is a system that supports a user equipment to perform CS service and PS service calls at the same time, but because the PS service usually has a relatively high data throughput, for the same user equipment (UE, User Equipment ) CS service and PS service, the service coverage is different, that is, when the UE is only doing CS service, its service quality at the cell edge is also very good; but if CS service and PS service exist at the same time In this case, due to the existence of the PS domain, and the coverage of the PS service is small, there may be a certai...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More