Switch decision method of mobile multimedia broadcast terminal
A mobile multimedia and terminal technology, applied in digital transmission systems, electrical components, error prevention, etc., can solve the problems that the terminal power consumption is greatly affected, and the terminal switching control cannot be received in real time, so as to improve the service quality of receiving multimedia and reduce power consumption. consumption effect
Active Publication Date: 2009-01-07
ZTE CORP
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The mobile multimedia broadcasting network adopts a one-way communication method, that is, from the transmitter system to the mobile receiving system, the reverse can use the mobile communication network to complete functions such as authentication and on-demand broadcasting, so the mobile multimedia broadcasting front-end system cannot switch and control the receiving terminal in real time , causing the switching operation to be completed by the receiving terminal, that is, one-way communication switching
[0005] In order to improve the service quality of mobile multimedia broadcasting to achieve seamless handover, the receiving terminal needs to prepare for the handover operation in advance, so the receiving terminal can monitor adjacent sector channels, including traffic channels or control channels (system Logical channel), but listening to adjacent cells has a great impact on terminal power consumption, so it is necessary to provide a mobile multimedia broadcast terminal handover judgment method, on the premise of improving the service quality of the terminal receiving multimedia broadcasting, and reducing the impact on terminal power consumption to the minimum
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0025] figure 1 Shown is a schematic diagram of a mobile multimedia broadcasting network based on OFDM technology. The user terminal moves in three network areas A, B, and C. The frame per second received by the terminal contains multiple OFDM symbols, and the data information of each multimedia service is transmitted in continuous symbols, that is, transmitted in a time-division manner, so the terminal can monitor neighboring cells at times other than receiving services in each frame. When the mobile multimedia broadcasting user moves to the three adjacent network areas of A, B and C in the A network, the terminal can perform neighbor monitoring, figure 2 Shown is a schematic diagram of user terminals listening to networks C and B respectively before and after network A receives service c, and obtaining information on sectors B and C.
[...
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 method comprises: a) when the terminal is at active state, it samples the data packet to make bit error rate and frame error rate calculation; if the bit error rate or frame error rate is more than a switching threshold, then the data packet is considered as a error packet; b) the terminal calculates the error packet rate, and decides if the error packet rate is more than a threshold of error packet rate; if yes, the terminal starts to listen in neighboring channel; otherwise, returning to step a; c) the terminal compares the signals quality of current sector with the one of neighboring sectors; if signal qualities from all sectors are less than the desired lowest threshold, the terminal stops receiving the multimedia broadcast service; if signal qualities from all sectors are more than the lowest demodulation threshold of the sector where the terminal originally locates at, then the terminal is switched to the sector with the best signal quality; otherwise, not switching.
Description
technical field [0001] The invention relates to the field of digital mobile communication, in particular to a handover judgment method of a mobile multimedia broadcasting terminal. Background technique [0002] In recent years, digital mobile multimedia broadcasting technology and standards have developed rapidly, such as DVB-H (Digital Video Broadcasting Handheld Receiver: Digital Video Broadcast Handheld) in Europe, MediaFLO (Media Single Forward Link: Media Forward Link Only) in the United States and China's CMMB (China Mobile Multimedia Broadcasting: China Mobile Multimedia Broadcasting), etc., all use OFDM (Orthogonal Frequency Division Multiplexing: Orthogonal Frequency Division Multiplexing) modulation technology. Reception, that is, in the time domain, the multimedia data information of each broadcast service is continuously modulated on multiple OFDM symbols, and the mobile multimedia broadcast receiving terminal also concentrates on receiving the multimedia service...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04Q7/34H04Q7/32H04L1/00H04W36/08
CPCH04W36/30H04W36/304
Inventor 朱晓光王标江华
Owner ZTE CORP