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Random access method and system realizing same

A random access and system message technology, applied in the field of communication, can solve the problems that the MTC device cannot feedback the random access fallback time, cannot obtain the fallback time, and cannot solve the problem of MTC device network congestion.

Active Publication Date: 2012-03-14
ZTE CORP
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Problems solved by technology

The backoff time carried in the same RAR MAC PDU for random access responses sent by different terminals is also the same, and H2H terminals and MTC devices cannot obtain different backoff times
Therefore, in the prior art, it is impossible to feed back different random access back-off times for H2H terminals and MTC devices, so that it is impossible to solve the network congestion caused by MTC devices during the random access process

Method used

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  • Random access method and system realizing same
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  • Random access method and system realizing same

Examples

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Embodiment Construction

[0057] Considering that when the ME randomly accesses the network, there will be network congestion. When the ME needs to re-access, it needs to adopt a random access back-off time different from that of the H2H terminal (ordinary terminal). In this embodiment, the ME uses an adjustment factor to adjust the reference backoff time to obtain a dedicated backoff time, and when reinitiating random access, sends a random access request according to the dedicated backoff time. The backoff time used when the common terminal re-initiates random access or a preset backoff time constant may be used as the reference backoff time. The network side carries the back-off time applicable to ordinary terminals in the random access response message, and the ME adjusts the back-off time received in the random access response message as its own dedicated back-off time; the back-off time constant can be preset in the ME, It can also be preset on the network side (such as the base station), and the...

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Abstract

The invention relates to a random access method and a system realizing the same. The random access method comprises the following steps that: a reference backspace time is previously configured in a machine-type-communication equipment (ME) or the reference backspace time is transmitted to the ME by a network side, and the network side transmits an adjustment factor to the ME; and the ME adopts the adjustment factor to adjust the reference backspace time to obtain a special backspace time, and a random access request is transmitted according to the special backspace time when the random access is restarted. A pre-configuration way or a network-side transmission way is adopted in the ME, so the ME acquires the reference backspace time, the adjustment factor is transmitted to the ME through a network-side transmission way, the ME adopts the adjustment factor to adjust the reference backspace time to obtain the special backspace time, so the ME and human-to-human (H2H) equipment can adopt different backspace times to restart the random access process, and the network congestion problem caused by identical backspace time adopted by the H2H equipment and the ME can be solved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a random access method and a system for realizing random access. Background technique [0002] M2M (Machine to Machine) is a concept proposed in the 1990s and is an important driving force for the development of communication technology. Simply put, M2M is the Internet of machines, and the means of realization include various networking technologies. The goal of M2M technology is to enable all machines and equipment to have networking and communication capabilities, and its core concept is Network Everything. The communication objects of M2M are machine-to-machine or human-to-machine. Data communication between one or more machines is defined as MTC (Machine Type Communication, Machine Type Communication), in which less human-computer interaction is required. A machine participating in MTC is defined as an MTC terminal (MTC UE, ME). An MTC terminal is a termina...

Claims

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Application Information

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IPC IPC(8): H04W68/00H04W74/08
CPCH04W74/085
Inventor 李兰兰戴谦艾建勋
Owner ZTE CORP
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