Implementation method for the busy prompt service in the digital cluster communication system
A technology of digital trunking communication and busy notification, applied in wireless communication, connection management, network topology, etc., can solve the problem that the busy call notification solution cannot be applied to digital trunking, and achieve the effect of improving user experience
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no. 1 example
[0049] In this embodiment, a user in the digital trunking system has activated the busy notification service, and when the user is in a certain trunking service, a user initiates a single call to him, such as image 3 shown, including the following steps:
[0050] Step 301, a cluster user initiates a single call to another cluster user, and sends a cluster call establishment request to the PDS;
[0051] Step 302, the PDS decodes the call setup request from the trunking terminal, and judges whether the format of the request message is legal, and if so, sends a call authentication request to the PHR, otherwise directly rejects the call setup request;
[0052] The call attribute identifier is carried in the call authentication request sent by the PDS.
[0053] Step 303, after the PHR receives the call authentication request, it queries the cluster user database, first authenticates whether the calling party is legal, determines whether the calling party is a legal user, whether ...
no. 2 example
[0061] In this embodiment, one or some users in the digital trunking system have opened the busy notification service. Figure 4 shown, including the following steps:
[0062] Step 401, a user in the group initiates a group call and sends a call setup request to the PDS;
[0063] Step 402, the PDS decodes the call establishment request from the trunking terminal, and judges whether the format of the request message is legal, and if so, sends a call authentication request to the PHR, carrying the call attribute identifier, otherwise directly rejects the call establishment request;
[0064] Step 403: After receiving the call authentication request, the PHR queries the cluster user database, first authenticates the calling party, and then authenticates the called party, that is, other group members. If the authentication is passed, determine if there are members in the group It is the active user of the busy prompt service, and if so, an authentication response message is return...
no. 3 example
[0074] In this embodiment, when a certain user in the digital trunking system has activated the busy notification service, and the user is in a non-trunking service (such as ordinary voice call, data service, etc.), another user initiates a notification service to the user. single call, such as Figure 5 shown, including the following steps:
[0075] Step 501, the called terminal is in a high-priority non-trunk service. For the case where the original call has the same priority as the new call, the called terminal is still considered to be in the "high-priority" service;
[0076] Step 502 is the same as step 301-step 303 in the first embodiment, and will not be repeated here;
[0077] Step 503, after the PDS receives the authentication response message, it judges that the called terminal is in a non-cluster call, and sends a call connection request of the called terminal to the base station subsystem (BSS);
[0078] Step 504, the BSS judges that the called terminal is in a n...
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