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Method for reducing random access collision in machine type communication-based communication network

A machine-type communication and random access technology, applied in wireless communication, electrical components, etc., can solve problems such as difficulty in judging the exact source of overload and setting adaptive parameters, poor resource utilization, etc., to reduce collision probability, increase The effect of accessing capacity and improving profit rate

Active Publication Date: 2014-06-11
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

And since all parameters in the proposed method are statistical parameters from the predicted peak of MTC activity, it is difficult to judge the exact source of overload and set adaptive parameters, which will lead to poor utilization of uplink resources

Method used

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  • Method for reducing random access collision in machine type communication-based communication network
  • Method for reducing random access collision in machine type communication-based communication network

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Embodiment Construction

[0020] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings show, by way of example, specific embodiments in which the invention can be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description is not limiting, and the scope of the invention is defined by the appended claims.

[0021] Before introducing the specific implementation manners according to the present invention, the method for reducing the overload of the random access channel in the MTC-based communication system that has been proposed in the prior art is firstly introduced.

[0022] 1) Access hierarchical blocking scheme ...

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Abstract

The invention relates to a method for reducing a random access collision in machine type communication user equipment of machine type communication-based communication system, wherein the machine type communication user equipment has low mobility. The method comprises the following steps that: a time adjustment parameter is recorded as a first time adjustment parameter during successful communication with a base station; when a new random access needs to be initiated, a random access guiding message is sent to the base station; a random access response message from the base station is received, wherein the random access response message includes a second time adjustment parameter; the recorded first time adjustment parameter is compared with the received second time adjustment parameter; if the difference value of the first time adjustment parameter and the second time adjustment parameter is in a predetermined error range, an L2 / L3 message is sent to the base station continuously; and otherwise, a new random access is initiated again after predetermined time regression is carried out. According to the scheme, on the basis of active collision detection and regression, the collision probability is substantially reduced and the access capacity is increased.

Description

technical field [0001] The present invention relates to a communication system based on machine type communication, in particular to a method for reducing random access collisions in a communication system based on machine type communication. Background technique [0002] Machine Type Communication (MTC) is a newly introduced item in the Long Term Evolution (LTE) system. Many MTC user equipments are characterized by low mobility. For example, water meters and electricity meters do not move; mobile vending stations do not move frequently; household health detection devices only move within specific areas. [0003] In the prior art, the MTC user equipment mostly uses a random access channel (Random Access Channel: RACH) to send signaling and data packets. However, the number of MTC user equipments in a specific area may be very large, so the communication system based on machine type communication will face the overload of the random access channel caused by the possible sur...

Claims

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Application Information

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IPC IPC(8): H04W74/08
Inventor 汪勇刚
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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