Method, system and device for realizing cluster communications in long-term evolution (LTE) system

Abstract

The invention discloses a method, system and device for realizing cluster communications in a long-term evolution (LTE) system. A cluster service resource is arranged on a network side of the LTD system, information of the arranged cluster service resource is sent to terminals, which are regarded as cluster users, through air-interface messages, and then the terminals carry out the cluster communications according to the received information of the cluster service resource. When the cluster communications are realized in the LTE system through the method, system and device, no reserved resource is arranged, no special channel or identification is arranged, the cluster service resource is arranged on the network side as needed, and therefore waste of resources of the LTE system is avoided; and when the method, system and device is used for realizing the cluster communications, the cluster service resource is arranged on the network side for the cluster service and is independent of other communication services, and therefore the situation that the cluster service and other communication services share the same carrier wave so that the cluster service is affected by the other communication services is avoided.

Description

technical field [0001] The present invention relates to the field of cluster wireless communication systems, in particular to a method, system and device for realizing cluster communication in a long term evolution system. Background technique [0002] Trunking wireless communication system, hereinafter referred to as trunking system, is a relatively economical and flexible command and dispatch communication system developed in recent years, widely used in government agencies, energy transportation, airport terminals, industrial and mining enterprises, fire police, water conservancy and The military and other units are used to meet the needs of internal communication of each unit. [0003] The most basic service provided by the trunking system is the Voice Group Call Service (VGCS). VGCS allows a user to establish a call with multiple users in a group belonging to a given service area and having the same group ID (ID). The VGCS uses half-duplex mode. During the call, users ...

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Problems solved by technology

[0006] The above-mentioned implementation of cluster communication in the public network also has shortcomings: the setting of the underlying bearer resources on the public network is not set for the characteristics of cluster communication, but for point-to-point communication. Therefore, when performing cluster scheduling services, still Based on the point-to-point communication method, this will cause a relatively long delay for terminals to access the cluster

[0010] Using the first method to realize trunking communication based on the LTE system, it is difficult to implement and not compatible with the subsequent standards of the LTE system because resources occupied by the trunking communication service are reserved and various channels and signs are specially set; The second method is used to realize trunking communication based on the LTE system. Because trunking communication and point-to-point communication are realized on different radio bearers on one carrier, it is impossible to physically isolate different types of services. Especially in emergency situations, point-to-point communication services are still available. Occupying the radio bearer occupied by the trunking communication service on the same carrier has affected the trunking communication

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