Data Forwarding During Handover in a Self-Backhauled Cell
First Claim
1. A method implemented in an anchor base station of a network, where the anchor base station communicates with a self-backhauled base station via a radio interface and where the network further includes another base station, the method comprising:
- determining whether a user equipment (UE) is being handed off from the self-backhauled base station to the other base station, where the determining is based on receiving a message from the self-backhauled base station via the radio interface instructing the anchor base station to stop delivering packets that are destined for the UE;
storing, based on the determination of whether the UE is being handed off, received packets intended for the UE; and
forwarding the stored packets to the other base station via a transport network for delivery to the UE.
1 Assignment
0 Petitions
Accused Products
Abstract
A method is implemented in an anchor eNodeB of a network, where the anchor eNodeB communicates with a self-backhauled eNodeB via a radio interface and where the network further includes another eNodeB. The method includes determining whether a user equipment (UE) is being handed off from the first self-backhauled eNodeB to the other eNodeB. The determining is based on: receiving (820) a message from the self-backhauled eNodeB via the radio interface instructing the anchor eNodeB to stop delivering packets that are destined for the UE, or sniffing (1 105, 1 1 10, 1 1 15) into one or more messages sent from the self-backhauled eNodeB to the other eNodeB to identify that the UE is being handed off from the self-backhauled eNodeB to the other eNodeB. The method further includes storing (1 120), based on the determination of whether the UE is being handed off, received packets intended for the UE: and forwarding (1 120) the stored packets to the other eNodeB via a transport network for delivery to the UE.
-
Citations
22 Claims
-
1. A method implemented in an anchor base station of a network, where the anchor base station communicates with a self-backhauled base station via a radio interface and where the network further includes another base station, the method comprising:
-
determining whether a user equipment (UE) is being handed off from the self-backhauled base station to the other base station, where the determining is based on receiving a message from the self-backhauled base station via the radio interface instructing the anchor base station to stop delivering packets that are destined for the UE; storing, based on the determination of whether the UE is being handed off, received packets intended for the UE; and forwarding the stored packets to the other base station via a transport network for delivery to the UE. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A first base station connected to a second base station in a network via a radio interface, where the first base station receives packets destined for a user equipment (UE) on a downlink from the second base station and receives packets on an uplink from the UE, the first base station comprising:
-
a transceiver configured to; send a handover request, associated with the UE, via the radio interface to the second base station for delivery to a target handover base station, receive a handover response from the second base station via the radio interface, where the handover response was sent from the target handover base station, send a notification message to the second base station instructing the second base station to stop delivering downlink packets destined for the UE; a memory configured to store packets previously received from the second base station that are destined for the UE; and a processing unit configured to; retrieve the packets stored in the memory prior to receipt of the handover response, and pass the retrieved packets to the transceiver for sending to the second base station via the radio interface for delivery to the target handover base station. - View Dependent Claims (7, 8, 9, 10, 11, 12)
-
-
13. A system associated with a cellular network, the system comprising:
-
a first base station connected to a user equipment (UE) and to a second base station via a first radio interface; the second base station connected to a transport network; a third base station connected to the transport network; a fourth base station connected to the third base station via a second radio interface, where the fourth base station is configured to provide wireless service to the UE; where the first base station is configured to; send a handover request associated with the UE to the fourth base station via the second base station, the transport network, and the third base station, receive a handover response from the fourth base station via the third base station, the transport network and the second base station, where the handover response grants handover of the UE from the first base station to the fourth base station, send a notification message to the second base station instructing the second base station to stop delivering packets destined for the UE to the first base station, and forward packets destined for the UE to the fourth base station via the second base station, the transport network and the third base station for delivery to the UE, where the second base station is configured to; store received packets destined for the UE subsequent to receipt of the notification message. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
-
Specification