Unlock instant, AI-driven research and patent intelligence for your innovation.

Terminal access method for wimax evolution system

A technology for evolving systems and terminal access, applied in the field of frame structure, and can solve problems such as being unable to be effectively applied

Inactive Publication Date: 2012-02-08
ZTE CORP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the frame structure definition of the 16e system, a time division duplex (TDD for short) frame only includes one downlink subframe and one uplink subframe, and the feedback of information sent by the downlink subframe of this frame will be sent in the next frame at the earliest. Sent in the uplink subframe, some services and functions that require fast feedback and low delay cannot be effectively applied in the current mobile WiMAX system

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
  • Terminal access method for wimax evolution system
  • Terminal access method for wimax evolution system
  • Terminal access method for wimax evolution system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The access method for the backward compatible WiMAX evolution system according to the embodiment of the present invention includes the following steps: according to the network planning and the service requirements of the backward compatible system, determine the subframe combination mode of the frame structure and which subframes are used for compatibility system; the base station transmits the frame structure according to the determined subframe combination mode, and sets the subframe combination attribute indication and the subframe allocation bitmap (Bitmap) indication in the frame control message; after the terminal of the evolved system is synchronized with the preamble of the evolved system, According to the subframe combination attribute indication in the frame control message and the subframe allocation Bitmap, obtain the subframe composition attribute of the system and the subframe time slot of the evolved system; after the terminal of the compatible system is s...

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 terminal access method for a WiMAX evolution system. The subframe combination mode and compatible configuration mode set the subframe combination attribute indication and subframe allocation bitmap indication in the frame control message of the frame structure, and send the frame structure to the terminal of the WiMAX evolution system; and the terminal of the WiMAX evolution system After synchronizing according to the preamble dedicated to the WiMAX evolution system in the frame structure, obtain the information of the subframe combination mode dedicated to the WiMAX evolution system and the information dedicated to the WiMAX evolution system according to the subframe combination attribute indication and the subframe allocation bitmap indication The subframe information is used to access the WiMAX evolution system.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a terminal access method for a WiMAX evolution system and a frame structure of a backward compatible WiMAX evolution system. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) system converts high-speed transmission data streams into low-speed parallel transmission data streams, which greatly reduces the sensitivity of the system to frequency selectivity of multipath fading channels. By introducing a cyclic prefix, OFDM further enhances the ability of the system to resist inter-symbol interference. In addition, the characteristics of high bandwidth utilization and simple implementation make OFDM more and more widely used in the field of wireless communication. A Worldwide Interoperability for Microwave Access (WiMAX) system based on Orthogonal Frequency Division Multiple Access (OFDMA) is a system using OFDM technology. [0003] Wir...

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 Patents(China)
IPC IPC(8): H04W80/00H04B7/26
Inventor 方惠英曲红云许玲
Owner ZTE CORP