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

Handover method of multi-carrier wireless OFDM system

一种多载波、无线的技术，应用在传输系统、无线通信、数字传输系统等方向，能够解决难100bps/Hz传输频谱效率等问题，达到好通量、减轻影响的效果

Inactive Publication Date: 2014-06-18
MEDIATEK INC +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current transmission technology is difficult to effectively achieve the transmission spectrum efficiency of 100bps / Hz

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
  • Handover method of multi-carrier wireless OFDM system
  • Handover method of multi-carrier wireless OFDM system
  • Handover method of multi-carrier wireless OFDM system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The following is a detailed description of the embodiments of the present invention according to several figures.

[0034] figure 2A schematic diagram of carrier pre-assignment for multi-carrier handover in a wireless multi-carrier OFDM network 20 according to one novel aspect. The multi-carrier OFDM network 20 includes a serving base station SBS21, a target base station TBS22 and a mobile station MS23. The mobile station MS23 is connected to the serving base station SBS21 via a primary carrier and one or more secondary carriers. When the mobile station MS23 moves away from the serving base station SBS21, the signal quality of the connection begins to degrade. Then the serving base station SBS21 or the mobile station MS23 starts the multi-carrier handover operation, so that the mobile station MS23 is handed over to the target base station TBS22. In a novel aspect, serving base station SBS21 determines (or upon request of mobile station MS23) that mobile station MS23...

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

Carrier pre-assignment is applied in multi-carrier handover operation to mitigate the impact to the user experience during handover and to achieve various objectives of call admission control in wireless multi-carrier OFDM networks. With carrier pre-assignment, a mobile station communicates its multi-carrier information to a target base station. The target base station pre-assigns secondary carriers to fulfill the requirements of the mobile station. In a first embodiment, a break-before-entry (BBE) multi-carrier handover procedure with carrier pre-assignment is provided. In a second embodiment, an entry-before-break (EBB) multi-carrier handover procedures for both inter-FA and intra-FA with carrier pre-assignment are provided. The multi-carrier handover procedures with carrier pre-assignment may be applied to 2-to-2 or N-to-N carriers handover situation. Because target secondary carriers are pre-assigned before handoff, the mobile station is ready for data transmission over multiple carriers after handover without additional carrier assignment procedure.

Description

[0001] This application is a divisional application of a patent application with an application date of April 23, 2010, an application number of 201080001186.2, and an invention title of "handover method in a multi-carrier wireless OFDM system". [0002] Cross References to Related Applications [0003] This application claims priority under Section 119 of the U.S. Patent Act to U.S. Provisional Patent Application No. 61 / 172,344, filed April 24, 2009, entitled "Capability Negotiation Method Supporting Priority Carrier Designation in an OFDM Multi-Carrier System" rights, this patent application is hereby incorporated by reference in its entirety. technical field [0004] The present invention relates to wireless network communications, and more particularly to handover operations in multi-carrier wireless systems. Background technique [0005] In current wireless communication systems, a radio bandwidth of 5MHz-20MHz is usually used to achieve a peak transmission rate of 10...

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): H04W36/00H04L5/00
CPCH04W36/0072
Inventor 卢晓珍汤智翔林圣崴廖婉君傅宜康周照钦
Owner MEDIATEK INC