Abstract
The present invention relates to a solution for handling handover of connections for a user equipment from a packet switch network to a circuit switched network. This is provided as a method implemented in a node and system. The method is provided in a telecommunications network connecting user equipment i.e. UE communicating wirelessly with the network. The method comprising steps of detecting that handover is required from a packet switched i.e. PS based network to a circuit switched i.e. CS based network initiating in a source mobility management node a single radio voice call continuity i.e. SVRCC initiating a PC to CS handover for non-voice components with information about voice related parameters and a PS to CS handover indicator executing hand over sending an update request to a serving gateway i.e. SGW from a target mobility management node with non-voice related parameters and the PS to CS handover indicator forwarding the update request from the SGW to a packet data network gateway i.e. PGW receiving the update request in the PGW detecting the PS to CS handover indicator and handling in the PGW the PS to CS handover indicator.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
| 4G,3G,2G | 25/06/2015 | ISLD-201506-018 | ERICSSON INC |
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No | Family Member | |||
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Specification Information
Specification Information
Technologies
Family Information
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||||
| ----- | ----- | ----- | ----- | ----- |
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Technologies
Mobility and handover
Product
Gateway nodeMobility Management Entity (MME)
Use Cases
Wireless communication
Services
Mobility Management
Claim
1. A node to be used in a telecommunications network, which telecommunications network is capable of connecting a user equipment, UE, wirelessly to the telecommunications network, wherein the node comprises:
at least one processor; and
memory containing instructions executable by the at least one processor whereby the node is configured to:
receive an update from a serving gateway, SGW, in relation to a single radio voice call continuity event, SRVCC, when a handover is required from a packet switched, PS, based network to a circuit switched, CS, based network;
detect a PS to CS handover indicator related to voice components in the update; and
handle the PS to CS handover indicator.
2. The node of claim 1 wherein the node is further configured to report the PS to CS handover indicator to a policy and charging rules function node, PCRF.
3. The node of claim 2 wherein the update includes both the PS to CS handover indicator and non-voice related parameters.
4. The node of claim 1 wherein the update is received over a S5/S8 interface.
5. The node of claim 2 wherein in order to handle the PS to CS handover indicator, the node is configured to wait for a decision from a policy and charging rules function node, PCRF.
6. The node of claim 1 wherein the node is a packet data network gateway.
7. The node of claim 1 wherein the handover is required from an evolved universal terrestrial radio access network, E-UTRAN, based network to a universal terrestrial radio access network/global system for mobile communications enhanced data rates for global evolution radio access network, UTRAN/GERAN, based network.
8. The node of claim 1 wherein the handover is required from a universal terrestrial radio access network-high speed packet access, UTRAN-HSPA, based network to a universal terrestrial radio access network/global system for mobile communications enhanced data rates for global evolution radio access network, UTRAN/GERAN, based network.
9. A method of operation of a node to be used in a telecommunications network, which telecommunications network is capable of connecting a user equipment, UE, wirelessly to the telecommunications network, comprising:
receiving, an update from a serving gateway, SGW, in relation to a single radio voice call continuity event, SRVCC, when a handover is required from a packet switched, PS, based network to a circuit switched, CS, based network;
detecting a PS to CS handover indicator related to voice components in the update; and
handling the PS to CS handover indicator.
10. The method of claim 9 further comprising reporting the PS to CS handover indicator to a policy and charging rules function node, PCRF.
11. The method of claim 10 wherein the update includes both the PS to CS handover indicator and non-voice related parameters.
12. The method of claim 10 wherein the update comprises receiving the update over a S5/S8 interface.
13. The method of claim 9 wherein handling the PS to CS handover indicator comprises waiting for a decision from a policy and charging rules function node, PCRF.
14. The method of claim 9 wherein the node is a packet data network gateway.
15. The method of claim 9 wherein the handover is required from an evolved universal terrestrial radio access network, E-UTRAN, based network to a universal terrestrial radio access network/global system for mobile communications enhanced data rates for global evolution radio access network, UTRAN/GERAN, based network.
16. The method of claim 9 wherein the handover is required from a universal terrestrial radio access network-high speed packet access, UTRAN-HSPA, based network to a universal terrestrial radio access network/global system for mobile communications enhanced data rates for global evolution radio access network, UTRAN/GERAN, based network.
17. The method of claim 13 further comprising:
receiving a decision from the PCRF to remove authorization for an associated voice call service; and
freeing up bearer resources associated with the voice call service associated with the decision from the PCRF to remove authorization.
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