Frame and signal transmitting method of multimedia broadcast and multicast system

A technology for multimedia broadcasting and signal transmission, applied in code division multiplexing systems, transmission systems, multiplexing communications, etc. Phase reference and other issues to achieve good compatibility, simplify frame structure, and save transmission resources.

Inactive Publication Date: 2009-02-18
ZTE CORP
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the design of a frame structure that has been disclosed, such as figure 2 As shown, by setting a pilot time slot before time slot 0 (TS0) and setting a control time slot after time slot 0 to support MBMS services, this not only changes the position of the time slot structure, but also makes When the terminal processes the control time slot, there is no phase reference, or an additional phase reference needs to be introduced, which increases the complexity of the system and equipment, and is not compatible with the existing TD-SCDMA frame structure

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
  • Frame and signal transmitting method of multimedia broadcast and multicast system
  • Frame and signal transmitting method of multimedia broadcast and multicast system
  • Frame and signal transmitting method of multimedia broadcast and multicast system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] In the 5 ms frame structure of the current TD-SCDMA system, there is an independent downlink pilot time slot DwPTS, guard time slot GP and uplink pilot time slot UpPTS, and the rest are regular time slots. For the MBMS system using out-of-band feedback, the guard time slot and uplink pilot time slot can be used for other purposes, while the downlink pilot time slot can still be used for terminal equipment to synchronize with the network. It is particularly important to make full use of the guard time slot and the uplink pilot time slot while keeping the conventional time slot structure unchanged or basically unchanged.

[0023] This embodiment provides a frame in an MBMS system, such as image 3 As shown, it includes: regular time slots, control time slots and downlink pilot time slots; the regular time slots are TS0, TS1, etc. used to carry services in the prior art; the downlink pilot time slots and control time slots Adjacent, the downlink pilot slot is used as a ph...

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 frame and signal transmission method in a multimedia broadcasting and a multicast system. The frame comprises a conventional time slot, a control time slot and a downlink pilot time slot; the method comprises: a sender transmits a signal with control information to a receiver; the control information is transmitted through the control time slots in each frame; the control time slot borders upon the downlink pilot time slot and uses the downlink pilot time slot as a phase reference. The technical scheme of the invention saves the transmission resource, simplifies the devices of the multimedia and the multicast system, is useful for the operation business to rapidly develop the multimedia broadcasting and the multicast services; the optimization scheme thereof can also realize compatibility of the MBMS system and the TD-SCDMA frame structure and is useful for compatibility of the following TD-SCDMA evolution technology.

Description

technical field [0001] The present invention relates to MBMS (Multimedia Broadcast and Multicast) system, in particular to a frame and signal sending method in the Multimedia Broadcast and Multicast system. Background technique [0002] TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system is the third-generation mobile communication system approved by the International Telecommunication Union (ITU), and has entered the commercial stage. Its frame structure is as follows: figure 1 It has been shown that it is feasible in practical applications. The technology and application based on TD-SCDMA system are also in continuous development. [0003] Multimedia broadcast and multicast (MBMS) is a technology that uses the infrastructure of mobile networks to carry out multimedia services, and its influence in actual operators is increasing day by day. This service has been considered emphatically in the technical standard, and at the same time, in the plan of f...

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 Applications(China)
IPC IPC(8): H04L12/18H04L1/00H04J13/02
Inventor 丁美玲孙长印史凡
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap