Design method of auxiliary control channel in pdt trunking system

Abstract

The invention relates to a method for designing an auxiliary control channel of a PDT cluster system. It is characterized in that: one or more auxiliary control channels are set at the same time as the dedicated control channel on a PDT cluster base station, so that some terminals can register on the auxiliary control channel for business. The dedicated control channel and the auxiliary control channel are collectively referred to as control channels ; The auxiliary control channel can be set and canceled, and other applications of the auxiliary control channel are completely consistent with the dedicated control channel; the present invention uses a single base station to achieve the purpose of terminal distribution without increasing the installation of system equipment. Compared with the multi-base station distribution method, it has low cost, Low maintenance difficulty, higher flexibility and other advantages. At the same time, this solution flexibly controls the terminal shunt by setting the shunt ratio, which has strong adaptability to the changing site needs. The terminal can seamlessly switch the control channel in the idle state without affecting the normal business, and the product use is more fluent.

Description

technical field [0001] The invention relates to a method for designing an auxiliary control channel of a PDT cluster system. Background technique [0002] In the PDT standardized trunking system, the base station needs at least one control channel to support terminal access, call establishment, short message service, supplementary service, etc. Almost all PDT trunking services require the participation of control channels, and each service needs to consume a certain amount of air interface resources. When the number of network-connected terminals reaches a certain level, uplink signaling collisions and downlink signaling congestion often occur, thereby affecting the service success rate and reducing product experience and customer satisfaction. [0003] The PDT standard is a trunking communication standard with independent intellectual property rights in China. It is based on the development of digital intercom and draws on international mature standard technologies such as...

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Problems solved by technology

[0004] Although the functions of the existing PDT standard system are relatively complete, there is still room for improvement in performance. There is a contradiction between limited air interface resources and increasing user demand, and common problems such as uplink collision and downlink congestion are still bottlenecks. These inherent Insufficiency limits the terminal access volume of a single PDT cluster base station

In areas with concentrated and busy business, the project usually adopts the solution of adding base stations to solve the problem. It relies on guiding terminals to be distributed to different base stations to alleviate the access pressure of a single base station. This solution is more effective for fixed-point busy areas, but for some large There are still limitations in safeguarding activities with strong mobility in a large number of terminal areas, and the temporary erection of base stations requires consideration of time and economic costs as well as the difficulty of subsequent maintenance, and the flexibility is poor

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