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Method for performing random access procedure in wireless communication system

A technology of random access process and wireless communication system, which is applied in the field of wireless communication and can solve problems such as conflicts

Active Publication Date: 2009-08-12
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the random access process based on line contention, since the user equipment randomly selects one of the shared signatures as the random access preamble, a collision may occur

Method used

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  • Method for performing random access procedure in wireless communication system
  • Method for performing random access procedure in wireless communication system
  • Method for performing random access procedure in wireless communication system

Examples

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Embodiment Construction

[0028] figure 1 is a block diagram showing a wireless communication system. This may be the network architecture of the Evolved Universal Mobile Telecommunications System (E-UMTS). E-UMTS may be referred to as a Long Term Evolution (LTE) system. Wireless communication systems are widely used to provide various communication services such as audio data, packet data, and so on.

[0029] refer to figure 1 , an evolved UMTS terrestrial radio access network (E-UTRAN) includes a base station (BS) 20 for providing a control plane and a user plane.

[0030] User Equipment (UE) 10 may be fixed or mobile and may be referred to by other terms such as Mobile Station (MS), User Terminal (UT), Subscriber Station (SS), wireless device, and the like. Base station 20 generally refers to a fixed station that communicates with user equipment 10, and may be referred to by other terms such as evolved Node B (eNB), base transceiver system (BTS), access point, and the like. Base station 20 may ...

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PUM

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Abstract

There is provided with a method for enabling a user equipment to perform a random access procedure in a wireless communication system. The method includes transmitting a random access preamble and receiving a random access response as a response to the random access preamble. The random access response is addressed by a random access identifier. The random access identifier is mapped to radio resources used for transmitting the random access preamble. The user equipment can immediately confirm its random access response and perform further efficient random access procedure.

Description

technical field [0001] The present invention relates to wireless communications. More particularly, the present invention relates to a method of performing a random access procedure in a wireless communication system. Background technique [0002] The 3rd Generation Partnership Project (3GPP) mobile communication system based on Wideband Code Division Multiple Access (WCDMA) radio access technology is widely adopted all over the world. High Speed ​​Downlink Packet Access (HSDPA), which can be defined as the first evolution stage of WCDMA, will provide 3GPP with a highly competitive radio access technology in the near future. However, because the requirements and expectations of users and service providers are constantly increasing, and competing radio access technologies are constantly advancing, new technology developments in 3GPP are required in the future to ensure its competitiveness. Reduction in cost per bit, increase in service availability, flexible use of frequenc...

Claims

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Application Information

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IPC IPC(8): H04B7/26
CPCH04W74/0833H04L61/10H04W74/006H04L29/12943H04B7/2628H04W74/002H04L29/12018H04L61/6072H04W8/26H04L2101/672H04B7/2612H04W74/0891Y02D30/70H04W72/21H04W72/23H04W74/004
Inventor 朴成埈李英大李承俊千成德
Owner LG ELECTRONICS INC
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