Method and system for session management for ultra reliable and low latency communications in high mobility scenarios
AssigneeHuawei Technologies Co., Ltd.
InventorsSophie VRZIC, Jaya RAO
Life of this patent
Estimating the term…
Abstract
Embodiments provide for session continuity while a mobile device moves. In some embodiments the UE is served by a serving cluster including a plurality of ANs with redundant links, with each redundant link including a UPGW. This allows a session to be maintained (for example, the UE can maintain the same IP address) as it moves, even though the ANs (and the corresponding UPGWs may change as the UE moves). A session manager (SM) can be utilized to establish a session and configure UPGWs as needed. In some embodiments a branching point can be utilized. In some embodiments the SM configures the branching point.
Claims37
A method of managing a session for a User Equipment (UE) by a session management (SM) network function comprising:
- receiving a request to establish a session requiring multiple redundant paths;
- establishing the session for the UE using a user plane gateway (UPGW) for each multiple redundant path, at least a first UPGW being associated with a first local data network.
A method of transmitting data packets for a packet data unit (PDU) session associated with a user equipment (UE), the method performed by a user plane branching function, the method comprising:
- receiving data packets associated with the PDU session from an access network;
- forwarding the data packets to a first user plane gateway (UPGW);
- duplicating the data packets;
- and
- forwarding the duplicated data packets to a second UPGW.
A method of managing a session for a User Equipment (UE) by a session management (SM) network function comprising:
- receiving a request to establish a session requiring multiple redundant paths from the UE via an access network;
- and
- establishing the session for each of the multiple redundant paths using a user plane gateway (UPGW) for each multiple redundant path and a user plane branching function between the access network and the UPGWs.
A method of transmitting data packets for a packet data unit (PDU) session associated with a user equipment (UE), the method performed by a user plane branching function, the method comprising:
- receiving uplink data packets associated with the PDU session from a first access node (AN) and a second access node;
- removing duplicate packets;
- and
- forwarding the packets to a user plane gateway (UPGW) for forwarding the packets to an application server.
Dependencies are inferred from the claim text.