Terminal access method

Abstract

The invention provides a terminal access method, and the method comprises the steps: deploying a first network for an area, and a second network which is interleaved with the first network at the samefrequency, wherein the second network serves as a backup network of the first network, the PLMN numbers in the network configuration information of the first network and the second network are different; configuring a priority higher than that of the second network for the first network. The method comprises the following steps: broadcasting the network configuration information and priority of afirst network and the network configuration information and priority of a second network; when receiving the network configuration information and the priority broadcasted by the base station, the user terminal obtaining and storing the network configuration information and the corresponding priority; when any user terminal needs to access the network, the user terminal accessing the network according to the stored network configuration information; and if two pieces of network configuration information with different PLMN numbers exist, selecting the network with the corresponding high priority to access. According to the method, the reliability of the system can be improved under the condition of saving frequency resources.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a terminal access method. Background technique [0002] At present, frequency resources have become an important bottleneck restricting the development of LTE wireless networks, especially for industrial wireless private networks. In my country, the 1785-1805MHz frequency band has been allocated to the public in the industry. Private network development. [0003] Vertical industry business has high requirements on reliability and system robustness, especially real-time control business. Facing the industry's limited frequency resources, how to improve system robustness while ensuring frequency utilization has become an urgent problem to be solved. [0004] In the GSM-R and LTE-M systems, a different-frequency interleaving networking scheme is adopted. see figure 1 , figure 1 It is a schematic diagram of a different-frequency interleaving network in an existing ...

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Problems solved by technology

[0005] Although this method greatly improves the reliability of the system and services and ensures that key control services can be responded in a timely manner, it requires two different carrier frequencies, resulting in low spectrum utilization. For industries with tight frequencies, especially As far as 5MHz bandwidth can be obtained, the practicability of this solution is not strong

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