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Accidental access method and corresponding terminal and base station adopting the same

A technology of random access response and random access, which is applied in the communication between multiple stations, the selection and arrangement of radio/induction links, electrical components, etc., to achieve the effect of improving resource utilization, shortening delay, and reducing load

Active Publication Date: 2008-12-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of this, the technical problem solved by the present invention is to provide a random access method and the corresponding terminal and base station using the method, so as to solve the shortcomings of the existing random access scheme

Method used

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  • Accidental access method and corresponding terminal and base station adopting the same
  • Accidental access method and corresponding terminal and base station adopting the same
  • Accidental access method and corresponding terminal and base station adopting the same

Examples

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Embodiment Construction

[0057] The basic idea of ​​the present invention is that, after the base station discovers a preamble collision, it schedules a dedicated uplink access resource for the collided terminal, and the collided terminal can use the dedicated uplink access resource to initiate a second random access process.

[0058] In order to make those skilled in the art understand the present invention better, below in conjunction with specific embodiment the method provided by the present invention is described in detail, figure 1 It is a flow chart of random access at the terminal side proposed by the present invention.

[0059] When performing random access, the terminal first randomly selects a Preamble from the available Preambles at the time slot where the RACH is located, that is, at the time of random access, and selects an RACH to send the Preamble (step 11). After sending the Preamble, the terminal will detect the downlink scheduling channel within the detection time window to know wheth...

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PUM

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Abstract

The invention discloses a random access method for the random access of a terminal, which includes the steps of: detecting the dispatching information transmitted by a base station at the down dispatching channel after the Preamble is transmitted; judging if a Preamble collision occurs after the dispatching information is detected at the down dispatching channel; transmitting the Preamble again at the up access resource indicated by the dispatching information if the Preamble collision occurs; receiving the random access response message at the message bearer channel indicated by the dispatching information if the Preamble collision does not occur. The invention also discloses a terminal which adopts the access method; additionally, the invention discloses a random access method for the treatment and response of the base station on the random access of the terminal and a base station that adopts the method.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a random access method and a corresponding terminal and base station using the method. Background technique [0002] In a mobile communication system, a terminal establishes uplink synchronization with a base station through a random access procedure. The existing random access schemes are: [0003] On the terminal side: the terminal randomly selects a Preamble among all available random access preambles (Preambles), and selects a random access channel (RACH, Random Access Channel) to send the Preamble, and starts a random access timer at the same time, and proceeds timing. If the terminal receives the Random Access Response (Random Access Response) message sent by the base station during the timing period, it can establish uplink synchronization with the base station by adjusting the sending time of the uplink message according to the timing adjustment (TA, Timing...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04B1/707H04Q7/38H04Q7/30
Inventor 鲍炜房家奕蒋海林毕海洲
Owner DATANG MOBILE COMM EQUIP CO LTD
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