A Low Power Consumption Preamble Resource Allocation Method in Machine Type Communication System

Abstract

The invention relates to a low-power-consumption preamble resource allocation method for a machine type communication system. The method has the advantages that under the condition that physical random access channels are limited, according to the principle of ''the maximum access efficiency'' and through spatial cell grouping, preamble resources are added, and access control and preamble resource allocation are independently carried out on each group, so that the access efficiency is improved, the power consumption for access is reduced, and the applicability for a low-consumption machine type communication scene is achieved.

Description

technical field [0001] The invention relates to a low-power leader resource allocation method in a machine type communication system, and belongs to the technical field of machine type communication leader resource management in the Internet of Things environment. Background technique [0002] Machine-type communication, also known as machine-to-machine communication, is a key technology for the development of the Internet of Things network. Without human intervention, machine-type communication can provide connections between machines and communicate with people. Communication achieves harmonious coexistence. However, such a communication method includes a large number of access devices, and due to the shortage of preamble resources, if many access devices are directly connected to the existing wireless access network, it will lead to low access efficiency and random access. The problem of heavy load and access congestion will even cause confusion in the communication betw...

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Problems solved by technology

However, such a communication method includes a large number of access devices, and due to the shortage of preamble resources, if many access devices are directly connected to the existing wireless access network, it will lead to low access efficiency and random access. The problem of heavy load and access congestion will even cause confusion in the communication between people, and these access devices include a large number of devices with low power consumption requirements, such as meter reading equipment, sewer monitoring equipment, etc. In this case In this case, if the existing random access mechanism is not improved, it will also cause the problem of consumption exceeding expectations

The control of the number of access devices and the dynamic allocation of leading resources can effectively improve the access efficiency, but neither of them can meet the needs of such a large number of access devices alone. When the number of access devices is small, the leading resources are dynamically allocated to improve access efficiency; when there are many access devices, the access devices are controlled to maintain a certain access efficiency while alleviating access congestion and access Phenomenon of heavy load

However, most of the existing joint preamble resource allocation methods only constrain the delay of the access device, and do not consider the low power consumption and delay insensitivity requirements of low-power machine type communication, and do not alleviate the problem of preamble resource shortage. Inefficiency is not high

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