Method and device for demixing transmitting broadcast service
A technology of broadcast service and enhancement layer, which is applied in the branch office to provide special service devices, broadcast service distribution, store-and-forward switching system, etc., and can solve the problem that user terminals cannot receive high-level broadcast services, etc.
Active Publication Date: 2011-06-15
DATANG MOBILE COMM EQUIP CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] In view of this, the present invention provides a method and device for layered broadcast service delivery to solve the problem that user terminals in the broadcast center area that can receive high-level broadcast services cannot receive high-level broadcast services
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
[0046] The basic idea of the present invention is: layer the broadcast service according to the space area of the cell, and each layer of broadcast service data corresponds to a group of code channels or frequencies; use the code channel group or frequency to send the corresponding broadcast service data.
[0047] In order to enable those skilled in the art to better understand the technical solution of the present invention, a detailed description is given below in conjunction with the accompanying drawings and embodiments.
[0048] Existing terrestrial broadcasting systems can be spatially divided into different regions, such as Figure 5 with Image 6 As shown, among them, Figure 5 Schematic diagram of a spatial region for transmitting broadcast traffic for a single cell, Image 6 Schematic diagram of a space area for multiple cells to transmit broadcast services using SFN.
[0049] Figure 5 with Image 6 The shaded part in refers to the central area of the broad...
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 transmitting broadcast services hierarchically, comprising the steps of: layering the broadcast services in accordance with space regions, wherein data of the broadcast services at different layers is loaded on different groups of prearranged code channels; transmitting the data of the broadcast services loaded on the prearranged code channels according to a prearranged transmission power. Meanwhile, the invention further discloses a device for transmitting broadcast services hierarchically. The embodiment of the invention guarantees that both user terminals at a central region and user terminals at an edge region can receive the data of the broadcast services from a fundamental layer, and that subscribers in the broadcasting central region can receivethe data of the broadcast services from the fundamental layer and an enhancement layer, and the invention avoids the situation that the user terminals, which are located at the broadcasting central region and supposed to receive the broadcast services with better quality, only can receive the broadcast services with inferior quality in consideration of the quality of the broadcast services that the user terminals at the edge region receive.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, to a method and device for layered broadcast service transmission. Background technique [0002] Existing terrestrial broadcasting systems are generally divided into two types, one of which is a system that does not use SFN (Single Frequency Net, Single Frequency Network), and the system sends the same broadcasting services. Cells configure resources independently; the other is a system that uses SFN , the system sends broadcast services through SFN, and the method for sending broadcast services is: the cells (configured with the same frequency and some other resources) that send the same broadcast services simultaneously send broadcast services, and the terminal merges the broadcast signals of different cells according to multipath. [0003] Methods for sending broadcast services in the prior art mainly include the following two types: [0004] The ...
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): H04L12/18H04L12/54H04W4/06
Inventor 丁昱杨晓东任世岩毛磊
Owner DATANG MOBILE COMM EQUIP CO LTD