IP Library › Granted Patent US 12713420
Granted Patent B2
US 12713420 · App. 18/299,288 · Granted Aug 18, 2026

Communication network comprising one geographical zone per communication group

Inventors: Olivier Paterour (Elancourt, FR); François Piroard (Elancourt, FR)
Assignee: AIRBUS DS SLC
H04W72/121H04L5/0048H04W28/0226H04W64/003
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Quick Facts
Patent No.
US 12713420
App. No.
18/299,288
Granted
Aug 18, 2026
Kind
B2
Abstract

A communication network according to the 3GPP MCS (3rd Generation Partnership Project Mission Critical Services) standard includes at least one first communication group, plurality of user devices each having knowledge of the first communication group, at least one first communication group management server managing the first communication group via a group document specific to the first communication group, the first communication group management server allowing each user device of the plurality of user devices to communicate in the first communication group, the global communication group document including at least one group geographical parameter, the group geographical parameter defining a geographical zone in which the user device of the plurality of user devices is affiliated with the first communication group.

Claims (26)

1 . A communication network according to the 3GPP MCS (3 rd Generation Partnership Project Mission Critical Services) standard comprising:

at least one first communication group,

a plurality of user devices each having knowledge of the first communication group,

a first communication group management server managing the first communication group via a group document defined by the Open Mobile Alliance OMA-TS-XDM_Group “Group XDM Specification” version 1.1.1 of 24 Jan. 2017, the group document being specific to the first communication group, the first communication group management server allowing each user device of the plurality of user devices to communicate in the first communication group, the group document comprising at least one group geographical parameter, the group geographical parameter defining a geographical zone in which the user device of the plurality of user devices is affiliated with the first communication group,

wherein the first communication group management server is configured to both manage the first communication group via the group document and use a received position of a user device to determine whether the user device has entered the geographical zone defined by the group geographical parameter,

wherein the first communication group is a global communication group regrouping at least one second communication group and at least one third communication group, and

wherein the communication network further comprises at least one second management server and one third management server, the second management server managing the second communication group, the third management server managing the third communication group, the first communication group management server being configured to propagate the group geographical parameter of the group document to the second management server and the third management server when the group geographical parameter is modified, when the group geographical parameter is set up or when the first communication group is created by regrouping the second communication group and the third communication group.

2 . The communication network according to claim 1 , wherein the first communication group management server of the first communication group is further configured to:

determine that at least one first user device of the plurality of user devices has entered the geographical zone defined by the group geographical parameter, and

initiate affiliation of the first user device with the first communication group.

3 . The communication network according to claim 1 , wherein the first communication group management server is further configured to receive, from each user device of the plurality of user devices, the position of the user device periodically and wherein the first communication group management server uses the position of the user device received to determine whether the user device has entered the geographical zone defined by the group geographical parameter.

4 . The communication network according to claim 3 , wherein each user device of the plurality of user devices comprises a positioning module and is configured to, periodically:

determine its position using its positioning module, and

transmit its position to the management server of the first communication group.

5 . The communication network according to claim 1 , wherein the group geographical parameter of the group document of the first communication group is defined by configuring the communication network.

6 . The communication network according to claim 1 , wherein the group geographical parameter of the group document of the first communication group is dynamically updated following issuing an alert by at least one user device to the first communication group management server, the geographical zone defined by the group geographical parameter hence being centred at the user device having issued the alert, the alert issued comprising the position of the user device.

7 . The communication network according to claim 1 , wherein the geographical zone defined by the group geographical parameter is polygonal or ellipsoidal.

8 . A communication network according to the 3GPP MCS (3 rd Generation Partnership Project Mission Critical Services) standard comprising:

at least one first communication group;

a plurality of user devices each having knowledge of the first communication group; and

a first communication group management server managing the first communication group via a group document defined by the Open Mobile Alliance OMA-TS-XDM_Group “Group XDM Specification” version 1.1.1 of 24 Jan. 2017, the group document being specific to the first communication group, the first communication group management server allowing each user device of the plurality of user devices to communicate in the first communication group,

wherein the first communication group is a global communication group regrouping a second communication group managed by a second management server and a third communication group managed by a third management server,

the group document comprising at least one group geographical parameter, the group geographical parameter defining a geographical zone,

and wherein the first communication group management server, acting as a controlling server, is configured to propagate the group geographical parameter to the second management server and the third management server acting as non-controlling servers,

the second management server managing the second communication group via a second group document defined by the Open Mobile Alliance OMA-TS-XDM_Group “Group XDM Specification” version 1.1.1 of 24 Jan. 2017, the second group document being specific to the second communication group and being configured to store the group geographical parameter after the propagation,

the third management server managing the third communication group via a third group document defined by the Open Mobile Alliance OMA-TS-XDM_Group “Group XDM Specification” version 1.1.1 of 24 Jan. 2017, the third group document being specific to the third communication group and being configured to store the group geographical parameter after the propagation.