Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for coding, mapping, receiving and dispatching transport format combination indicator (TFCI) in time division-synchronization code division multiple access (TD-SCDMA) system

A technology of TD-SCDMA and encoding method, which is applied in the communication between multiple stations, power management, electrical components, etc., and can solve the problems of reducing TFCI transmission efficiency, resource waste, short TFCI, etc.

Inactive Publication Date: 2011-03-23
SPREADTRUM COMM (SHANGHAI) CO LTD
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] (3) Very short TFCI (1~2 bits)
[0022] (3) Very short TFCI (1~2 bits)
[0025] As mentioned above, according to the existing TD-SCDMA protocol, no matter what modulation method the TFCI adopts, before the TFCI is encoded, if the number of bits of the TFCI is a certain value (such as 3, 4, 6, 7, 8, 9, etc.) , you need to use 0 to make up the number of TFCI bits to 5 or 10 (hereinafter referred to as "complementary bits"). These supplementary bits have nothing to do with the original TFCI bits, but are just for the convenience of coding, resulting in waste of resources and reducing the transmission of TFCI. Efficiency, and the receiving end cannot use the supplementary bits to improve the transmission performance of TFCI; if these supplementary bits are not fixed to 0, but are set to bit information that has a certain relationship with the original TFCI, this relationship can be used to improve transmission when receiving performance

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 for coding, mapping, receiving and dispatching transport format combination indicator (TFCI) in time division-synchronization code division multiple access (TD-SCDMA) system
  • Method for coding, mapping, receiving and dispatching transport format combination indicator (TFCI) in time division-synchronization code division multiple access (TD-SCDMA) system
  • Method for coding, mapping, receiving and dispatching transport format combination indicator (TFCI) in time division-synchronization code division multiple access (TD-SCDMA) system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0106] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0107] The core idea of ​​the present invention is to improve the resource utilization rate of the system by expressing the supplementary bits inserted before the TFCI encoding of the TD-SCDMA system as information bits having a certain relationship with several original TFCI bits on the basis of compatibility and spectral efficiency. At the same time, when the original TFCI bit number is equal to 1, the coded TFCI word is no longer only mapped to the first part and the third part of the TFCI domain of two consecutive subframes, but is mapped to all the first to fourth parts of the TFCI domain, and in The receiving end improves the system gain and transmission performance by combining soft bit information.

[0108] Embodiment of the encoding method of the TD-SCDMA system transmission format combination indication

[0109] Complementary bits need to ...

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 for coding, mapping, receiving and dispatching a transport format combination indicator (TFCI) in a time division-synchronization code division multiple access (TD-SCDMA) system, which reduces the wasting of resources and improves the transmission efficiency of the TFCI. The invention is characterized in that in the coding method, the pre-coding operation is carried out on a plurality of original TFCI bits, and then the information bits subjected to pre-coding as supplemental bits inserted before TFCI coding are inserted into the corresponding positions in the original TFCI bits. The invention is applied in the field of mobile communication.

Description

technical field [0001] The invention relates to a coding processing method of a 3G communication system, in particular to a coding processing method for improving TFCI (Transport Format Combination Indicator, transmission format combination indicator) transmission performance in a TD-SCDMA system. Background technique [0002] With the process of global economic integration and social informatization, mobile communication services and mobile communication users are showing a trend of rapid growth. In order to meet the needs of mobile communication personalization, intelligence and multimedia, the third generation mobile communication system ( referred to as "3G"). TD-SCDMA is one of the three main standards of the existing 3G system, and is an international communication standard proposed by China for the first time. As a 3G system with independent intellectual property rights in my country, TD-SCDMA is a public land mobile communication system that adopts TDD (time divisio...

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): H04W52/42H04B7/26
Inventor 周加铳张爱民师延山
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com