Abstract
Described is a method for managing locally switched call connections in a wireless communication network comprising receiving at a core network node a first message indicating that a first user equipment connected via the locally switched call connection has been detected in a target radio access node and transmitting triggered by the first message a second message requesting a status change of the locally switched call connection to a second user equipment such that a user plane data path from the first user equipment to the second user equipment is switched to a core network path. Moreover the method is implemented in a network node while the method steps can be executed by means of a computer program product comprising instruction sets performing each method step.
Described is a method for managing locally switched call connections in a wireless communication network comprising receiving at a core network node (118) a first message (218 317) indicating that a first user equipment (102) connected via the locally switched call connection has been detected in a target radio access node and transmitting triggered by the first message (218 317) a second message (220 318) requesting a status change of the locally switched call connection to a second user equipment (104) such that a user plane data path (100) from the first user equipment (102) to the second user equipment (104) is switched to a core network path (109). Moreover the method is implemented in a network node 600 while the method steps can be executed by means of a computer program product comprising instruction sets performing each method step.
Technologies
Mobility and handover
Product
Use Cases
Wireless communication
Services
Claim
1. Method for managing locally switched call connections in a wireless communication network, comprising the steps:', '- receiving, at a core network node (118), a first message (218, 317) indicating that a first user equipment (102) connected via the locally switched call connection has been detected in a target radio access node;', '- transmitting, triggered by the first message (218, 317), a second message (220, 318) requesting a status change of the locally switched call connection to a second user equipment (104), such that a user plane data path (100) from the first user equipment (102) to the second user equipment (104) is switched to a core network path (109);', '- receiving, at the core network node (118), a fourth message (224, 322) indicating that the first user equipment (102) has completed the handover and that the call connection between the handed over first user equipment (102) and the second user equipment (104) cannot be locally switched; ,', '- transmitting, in response to the fourth message (224, 322), a fifth message (226, 324) instructing the clearing of the locally switched call connection between the first user equipment (102) and the second user equipment (104), after handover of the first user equipment (102) has been completed.
2. Method according to claim 1, further comprising the step of receiving, at the core', 'network node (118), a third message (220a, 318a) in response to the second message (220, 318), indicating switching of the user plane data path (100) to the core network path (109) has been completed;
3. Method according to claim 1 or 2, wherein transmission of the third message (220a, 318a) results in transmission of user data originating from the first user equipment (102) through the core network switched path (109).
4. Method according to claim 3, wherein the transmission of the third message further results in transmission of downlink- and uplink user data to and from the first user equipment (102) via the core network switched path (109).
5. Method according to one of the claims 1-4, wherein the first message comprises a handover detect, HO detect, message.
6. Method according to one of the claims 1-4, wherein the first message comprises a relocation detect message.
7. Method according to one of the claims 1-5, wherein the second message comprises a local call local switching status change request, LCLS-Status-Change-Request.
8. Method according to claim 7, wherein the LCLS-Status-Change Request message comprises a a new value in its information element, IE, the new value being "Indicate', 'DL data after handover", indicating reception of user plane downlink data originating at the first user equipment (102) at the second user equipment (104) via the core network switched path (109),
9. Method according to one of the claims 1-8, wherein the fourth message comprises a handover complete (HO Complete) message
10. Method according to one of the claims 1-8, wherein the fourth message comprises a Relocation Complete message11. Method according to one of the claims 1-10, wherein the fifth message comprises a clear command message
12. Method according to one of the claims 1-1, wherein the core network node comprises a mobile switching center (MSC)
13. Method according to one of the claims 1-12, wherein the locally switched call', 'connection comprises a data or voice connection between two user equipments served by at least onenetwork node wherein the call connection is switched locally within an additional network node controlling the at least one network node
14. Method for managing locally switched call connections in wireless communication network, comprising the steps:', '- receiving, at a core network node (208), a first message (220, 318) requesting status change of the locally switched connection at the second user equipment (104);', '- transmitting, in response to the first message (220, 318), a second message (222, 320) instructing the switching of a user plane data path (100) to a core network path (109) in order to receive user plane data originating from the first user equipment (102) at the second user equipment (104) via the core network path (109) while user plane data from the second user equipment (104) to the first user equipment (102) is transmitted on the locally switched path (100) and uplink via the core network path;', '- receiving a fourth message (228, 326), at the core network node (208), indicating that the locally switched call connection to the first user equipment (102) is no longer locally switched
15. Method according to claim 14 further comprising the step of receiving, in response to the second message (222, 320), a third message (222a, 320a) indicating switching of the user plane data path (100) to the core network path (109);16. Method according to claim 14 or 15, further comprising the step of transmitting, in response to the first message (220, 318), a fourth message (220a, 318a) indicating switching of the user plane data path (100) to the core network path (109) has been completed;17. Method according to one of the claims 14-16, wherein the first message comprises a local call local switching status change request message (220, 318) with a new value in the -status change information element, LCSL- Status-Change IE, of the message indicating local call local switching status change
18. Method according to claim 17, wherein the local call local switching status change request message comprises an indication for receiving downlink at handover,', 'IndicateDLdataAfterHandover, requesting reception of downlink data from the first user equipment (102) via the core network path (109)
19. Method according to one of the claims 14-18, wherein the second message comprises a local call local switching connect control, LCLS CONNECT CONTROL, message.
20. Method according to claim 89, wherein the local call local switching connect control message comprises a downlink data at handover (DLDataatHandover) indication, instructing reception of user plane downlink data originating from the first user equipment (102) at the second user equipment (104) via the core network switched path (109).
21. Method according to one of the claims 1-20, wherein the core network node is located in the same core network in which the first user equipment (102) is handed over.
22. Method according to one of the claims 1-21, wherein the core network node is located in a network to which the first user equipment (102) is handed over.
23. Method for managing local call connections in a wireless communication network, comprising the steps: - receiving a first message (212, 312) at a network node (114) requesting transmission of uplink user plane data from a second user equipment (104) via a core network path (109) to a first user equipment (102) to be handed over;', '- receiving a second message (222, 320) at the network node (114) requesting switching of user plane downlink data originating from the first user equipment (102) from a local user plane data path (100) to a core network path (109);', '- transmitting a fourth message (228, 328) in response to the second message, indicating that the locally switched call connection to the first user equipment (102) is still active.
24. Method according to claim 23, further comprising transmitting a third message (222a, 320a) in response to the second message (220, 318) indicating switching of the user plane data path (100) to the core network path (109)
25. Method according to claim 23 or 24, wherein the network node is a base station', 'subsystem (BSS) or a base station controller (BSC).
26. Network node (400) adapted for a wireless communication network, comprising:', '- a communication interface (404) adapted for receiving and transmitting data and control information in the wireless communication network,', '- a processor (402) configured to analyze and process signals received from the communication interface (404), the signals comprising a first message (218, 317) indicating that a first user equipment (102) connected via a locally switched call connection has been detected in the target network node and a fourth message (224, 322) indicating that the first user equipment (102) has completed the handover to the target network node, the processor (402) being further configured to generate a fifth message (226, 324) in response to the fourth message (224, 322) received from the communication interface (404), the fifth (226, 324) message instructing the clearing of the locally switched call connection between the first user equipment (102) and the second user equipment (104) after the first user equipment (102) has been', 'successfully handed over to the target network node and to transmit the fourth message (226, 324) via the communication interface (404);', '- a memory device (406) for storing software code adapted to generate messages transmitted by the processor (402) via the wireless communication network, characterized in that', 'the processor (402) is further configured to generate a second message (220, 318) in response to the received first message (218, 317) and to transmit the second message (220, 318) via the communication interface (404) requesting a status change of the locally switched connection to the second user equipment (104), such that a user plane data path (100) from the first user equipment (102) to the second user equipment (104) is switched to a core network path () in order to receive user plane data originating from the first user equipment (102) via the core network path ().
27. Network node (400) adapted for a wireless communication network, comprising:', '- a communication interface (404) adapted for receiving and transmitting data and control information in the wireless communication network,', '- a processor (402) configured to analyze and process signals received from the communication interface (404), the signals comprising a first message (220, 318) indicating a request for change of the local call switching status of a first user equipment (102) which is being handed over and a fourth message (228, 326) indicating that the locally switched call connection to the first user equipment (102) is no longer locally switched;', '- a memory device (406) for storing software code adapted to generate messages transmitted by the processor (402) via the wireless communication network, characterized in that', 'the processor (402) is further configured to generate a second message (222, 320) in response to the first message (220, 318) received and to transmit the second message (220, 318) via the communication interface (404), the second message (220, 318) comprising instructions for switching of a user plane data path (100) to a core network path 0 in order to receive user plane data originating from the first user equipment (102) via the core network path ().
28. Network node (400) adapted for a wireless communication network, comprising:', '- a communication interface (404) adapted for receiving and transmitting data and control information in the wireless communication network,', '- a processor (402) configured to analyze and process signals received from the communication interface (404), the signals comprising a first message (212, 312) requesting transmission of uplink user plane data via a core network path () to a first user equipment (102) which is in the process of being handed over to a target network node and a second message (222, 320) requesting switching of user plane data associated with downlink data originating from the first user equipment (102) from a local user plane data path (100) to a core network path ();', '- a memory device (406) for storing software code adapted to generate messages transmitted by the processor (402) via the wireless communication network, characterized in that', 'the processor (402) is further configured to generate a fourth message (228. 326) in response to the second message (222, 320) received and to transmit the third message via the communication interface (404), the third message comprising instructions terminating the locally switched call connection to the first user equipment (102) after the handover of the first user equipment (102) has been completed. A computer program product for performing handover in a wireless communication network, comprising instructions sets for:', '- receiving, at a core network node (118), a first message (218, 317) indicating that a first user equipment (102) connected via the locally switched call connection has been detected in a target radio access node; - transmitting, triggered by the first message (218, 317), a second message (220, 318) requesting a status change of the locally switched call connection to a second user equipment (104), such that a user plane data path (100) from the first user equipment (102) to the second user equipment (104) is switched to a core network path (109);', '- receiving, at the core network node (118), a fourth message (224, 322) indicating that the first user equipment (102) has completed the handover and that the call connection between the handed over first user equipment (102) and the second user equipment (104) cannot be locally switched; ,', '- transmitting, in response to the fourth message (224 ,322), a fifth message (226, 324) instructing the clearing of the locally switched call connection between the first user equipment (102) and the second user equipment (104), after handover of the first user equipment (102) has been completed.', 'A computer program product for performing handover in a wireless communication network, comprising instructions sets for:', '- receiving, at a core network node (208), a first message (220, 318) requesting status change of the locally switched connection at the second user equipment (104);', '- transmitting, in response to the first message (220, 318), a second message (222, 320) instructing the switching of a user plane data path (100) to a core network path (109) in order to receive user plane data originating from the first user equipment (102) at the second user equipment (104) via the core network path (109) while user plane data from the second user equipment (104) to the first user equipment (102) is transmitted on the locally switched path (100) and uplink via the core network path;', '- receiving a fourth message (228, 326), at the core network node (208), indicating that the locally switched call connection to the first user equipment (102) is no longer locally switched.', 'A computer program product for performing handover in a wireless communication network, comprising instructions sets for:', '- receiving a first message (212, 312) at a network node (114) requesting transmission of uplink user plane data from a second user equipment (104) via a core network path (109) to a first user equipment (102) to be handed over;', '- receiving a second message (222, 320) at the network node (114) requesting switching of user plane downlink data originating from the first user equipment (102) from a local user plane data path (100) to a core network path (109);', '- transmitting a fourth message (228, 326)in response to the second message, indicating that the locally switched call connection to the first user equipment (102) is still active.']
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SUMMARY
ClaimChart-EP2681964A1-STO
Patent number:EP2681964A1
Claim Chart Type : SEP Claim Chart
Price: 200 €
Note:
The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.