Method of providing a delayed connection announcement to a mobile subscriber within a radio telecommunication system

Claim 1

A method of delivering an incoming call to a called mobile station in a radio telecommunication system having an originating mobile switching center (MSC), a home location register (HLR), and a visited mobile switching center (V-MSC) in which said called mobile station is operating, said method comprising the steps of: receiving said incoming call in said originating MSC; informing said V-MSC that said incoming call invokes an alert-and-answer-before-routing feature; transmitting an alerting signal from said V-MSC to said called mobile station prior to routing the call to the V-MSC; transmitting, from said V-MSC to said called mobile station, a delayed connection message when said called mobile station answers said alerting signal, and prior to routine the call to the V-MSC; and routing said incoming call to said called mobile station.

Claim 2

A method of delivering an incoming call to a called mobile station in a radio telecommunication system having an originating mobile switching center (MSC), a home location register (HLR), and a visited mobile switching center (V-MSC) in which said called mobile station is operating, said method comprising the steps of: receiving said incoming call in said originating MSC; informing said V-MSC that said incoming call invokes an alert-and-answer-before-routing feature; transmitting an alerting signal from said V-MSC to said called mobile station prior to routing the call to the V-MSC; transmitting, from said V-MSC to said called mobile station, a delayed connection message when said called mobile station answers said alerting signal, and prior to routine the call to the V-MSC; and routing said incoming call to said called mobile station.

Claim 8

A method of delivering an incoming call to a called mobile station in a radio telecommunication system having an originating mobile switching center (MDS), a home location register (HLR), and a visited mobile switching center (V-MSC) in which said called mobile station is operating, said method comprising the steps of: receiving said incoming call in said originating MSC; transmitting, from said originating MSC to said HLR, a location request message requesting a location of said called mobile station; determining, within said HLR, whether said incoming call invokes an alert-and-answer-before-routing feature; transmitting, from said HLR to said V-MSC, a routing request message having a forward service indicator code, upon determining that said incoming call invokes an alert-and-answer-before-routing feature; receiving, in said V-MSC, the routing request message having the forward service indicator code; paging, from said V-MSC, the called mobile station prior to routing the call to the V-MSC; receiving, in said V-MSC, a paging response from the called mobile station; seizing a voice channel between said V-MSC and said called mobile station; transmitting an alerting signal from said V-MSC to said called mobile station prior to routing the call to the V-MSC; transmitting, from said V-MSC to said called mobile station, a delayed connection message when said called mobile station answers said alerting signal, and prior to routing the call to the V-MSC; transmitting, from said V-MSC to said HLR, a routing number for said called mobile station; and routing said incoming call to said called mobile station.

Claim 9

A method of delivering an incoming call to a called mobile station in a radio telecommunication system having an originating mobile switching center (MDS), a home location register (HLR), and a visited mobile switching center (V-MSC) in which said called mobile station is operating, said method comprising the steps of: receiving said incoming call in said originating MSC; transmitting, from said originating MSC to said HLR, a location request message requesting a location of said called mobile station; determining, within said HLR, whether said incoming call invokes an alert-and-answer-before-routing feature; transmitting, from said HLR to said V-MSC, a routing request message having a forward service indicator code, upon determining that said incoming call invokes an alert-and-answer-before-routing feature; receiving, in said V-MSC, the routing request message having the forward service indicator code; paging, from said V-MSC, the called mobile station prior to routing the call to the V-MSC; receiving, in said V-MSC, a paging response from the called mobile station; seizing a voice channel between said V-MSC and said called mobile station; transmitting an alerting signal from said V-MSC to said called mobile station prior to routing the call to the V-MSC; transmitting, from said V-MSC to said called mobile station, a delayed connection message when said called mobile station answers said alerting signal, and prior to routing the call to the V-MSC; transmitting, from said V-MSC to said HLR, a routing number for said called mobile station; and routing said incoming call to said called mobile station.

Claim 10

A method of notifying a called mobile station of a delayed incoming call within a radio telecommunication system having an originating exchange having a home location register (HLR) and an originating mobile switching center (MSC), a plurality of visited mobile switching centers (V-MSCs), and a plurality of mobile stations, each one of said plurality of mobile stations being assigned to a single pilot directory number (PDN), wherein said HLR maintains a list of parameters identifying each V-MSC in which at least one mobile station identified with the PDN is believed to be currently located, said method comprising the steps of: receiving a call directed to the PDN in the HLR of the originating exchange; transmitting, from said HLR, a individual routing request message having a forward service indicator code to each one of said identified V-MSCs; receiving, in each identified V-MSC, the routing request message having the forward service indicator code; paging, from each identified V-MSC, each identified mobile station located therein prior to routing the call; receiving, in at least one of said identified V-MSCs, a paging response from at least one of said identified mobile stations located therein; seizing a voice channel between each identified V-MSC receiving a page response and said at least one responding mobile station located therein; transmitting an alerting signal from each receiving identified V-MSC to said at least one responding mobile station located therein prior to routing the call; determining which of said at least one responding mobile stations answered said alerting signal; transmitting, from each receiving identified V-MSC, a delayed connection message to said at least one answering mobile station located therein prior to routing the call; transmitting from each V-MSC having at least one answering mobile station, a routing number for said at least one answering mobile station to said HLR; and selectively routing said incoming call to one of said answering mobile stations.

Claim 11

A method of notifying a called mobile station of a delayed incoming call within a radio telecommunication system having an originating exchange having a home location register (HLR) and an originating mobile switching center (MSC), a plurality of visited mobile switching centers (V-MSCs), and a plurality of mobile stations, each one of said plurality of mobile stations being assigned to a single pilot directory number (PDN), wherein said HLR maintains a list of parameters identifying each V-MSC in which at least one mobile station identified with the PDN is believed to be currently located, said method comprising the steps of: receiving a call directed to the PDN in the HLR of the originating exchange; transmitting, from said HLR, a individual routing request message having a forward service indicator code to each one of said identified V-MSCs; receiving, in each identified V-MSC, the routing request message having the forward service indicator code; paging, from each identified V-MSC, each identified mobile station located therein prior to routing the call; receiving, in at least one of said identified V-MSCs, a paging response from at least one of said identified mobile stations located therein; seizing a voice channel between each identified V-MSC receiving a page response and said at least one responding mobile station located therein; transmitting an alerting signal from each receiving identified V-MSC to said at least one responding mobile station located therein prior to routing the call; determining which of said at least one responding mobile stations answered said alerting signal; transmitting, from each receiving identified V-MSC, a delayed connection message to said at least one answering mobile station located therein prior to routing the call; transmitting from each V-MSC having at least one answering mobile station, a routing number for said at least one answering mobile station to said HLR; and selectively routing said incoming call to one of said answering mobile stations.