Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for mapping resources of control channel in communication system

A communication system and resource mapping technology, which is applied in the field of resource mapping of control channels, can solve the problems of complex mapping process, increasing the difficulty of control channel design, and high complexity of wireless communication system control channels

Active Publication Date: 2010-08-18
ZTE CORP
View PDF2 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The increase in the complexity of the wireless communication system leads to a higher complexity of the control channel, especially in the wireless communication system based on OFDMA technology, the wireless resource is a two-dimensional time-frequency resource composed of OFDMA symbols in the time domain and subcarriers in the frequency domain , its resource mapping needs to be carried out in the time domain and frequency domain, and the mapping process is more complicated, which increases the difficulty of designing the control channel in the wireless communication system based on OFDMA technology

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 and device for mapping resources of control channel in communication system
  • Method and device for mapping resources of control channel in communication system
  • Method and device for mapping resources of control channel in communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] According to an embodiment of the present invention, a resource mapping method of a control channel is provided.

[0076] Figure 4 is a flow chart of a resource mapping method for a control channel according to an embodiment of the present invention, such as Figure 4 As shown, the method includes the following steps (step S402 to step S404)

[0077] Step S402, the resource mapping process of the subframe where the broadcast control channel is located is different from the resource mapping process of the subframe where the non-broadcast control channel is located, wherein the number of OFDMA symbols contained in the subframe where the broadcast control channel is located is determined by the length of the cyclic prefix used by the communication system Sure. Here, the non-broadcast control channel is a control channel other than the broadcast control channel. Specifically, the resource mapping process of the subframe where the broadcast control channel is located can ...

example 1

[0090] Figure 5 Describes the resource mapping process of the subframe where the non-broadcast control channel of the 5MHz OFDMA system is located, such as Figure 4 As shown, the number of FFT points of the 5MHz system is 512, and the available data subcarriers in one subframe are 432, which are divided into N (=24) physical resource units (Physical Resource Unit, PRU for short), each with a size of 18x6, That is, there are 18 carriers in the frequency domain and 6 OFDMA symbols in the time domain. Due to the cyclic prefix and the control channel, the number of OFDMA symbols in the time domain may be 5 or 7.

[0091] First divide 24 physical resource units into multiple subbands (subbands), each subband contains continuous N1 physical resource units, for example, N1=4, then it is 6 subbands, replace the subband or select K from the subband at medium intervals SB Subband, for example, K SB=3, use row and column replacement, the replacement matrix is ​​[0, 1; 2, 3; 4, 5], th...

example 2

[0100] Figure 6 A schematic diagram of the resource mapping process 1 of the subframe where the broadcast control channel is located in the 5MHz OFDMA system according to the embodiment of the present invention is described, as shown in Figure 5 As shown, the number of FFT points of the 5MHz system is 512, and the available data subcarriers in one subframe are 432, which are divided into N (= 24) PRUs, and each PRU has a size of 18xNs, that is, there are 18 carriers in the frequency domain and 18 carriers in the time domain. There are Ns OFDMA symbols. Due to the cyclic prefix and the control channel, the number of OFDMA symbols occupied by the broadcast control channel in the time domain can only be 5 or 6.

[0101] First, select or extract a certain number (for example, k) of physical resource units from both sides of the 24 physical resource units. One or a combination of frequency modes, or the number can be flexibly set as required. Afterwards, the k physical resource...

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 mapping resources of a control channel in a communication system. The method comprises the following steps of: differing a process of mapping resources of a subframe of a broadcast control channel from a process of mapping resources of a subframe of a non-broadcast control channel; and instructing the process of mapping resources of the subframe of the non-broadcast control channel through control information in the broadcast control channel. The technical scheme solves the problems of occupying resource positions by a synchronization channel and the broadcast control channel and modes, simplifies the process that a terminal identifies the broadcast control channel and ensures frequency spectrum efficiency of a wireless communication system based on OFDMA technology through the design scheme of the control channel.

Description

technical field [0001] The present invention relates to the communication field, in particular to a resource mapping method and device for a control channel in a communication system. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM for short) technology is a high-speed transmission technology in a wireless environment, which improves performance against multipath fading by extending the pulse width of OFDMA symbols. The realization principle of OFDM technology is: convert high-speed serial data into multiple relatively low-speed parallel data, and modulate the multiple parallel data onto mutually orthogonal sub-carriers for transmission. Orthogonal Frequency Division Multiple Access (OFDMA for short) technology is based on the OFDM technology and enables users to occupy different subcarriers to achieve multiple access. [0003] In a wireless communication system, a base station refers to a device that provides functions such as initial access,...

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): H04W72/12H04L27/26
Inventor 关艳峰夏薇方惠英刘颖
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com