Back to results
US 11,388,558 B2Granted
Robust multicast, SC-PTM, and broadcast delivery with neighbor UE's assistance
AssigneeKYOCERA Corporation
InventorsAmit Kalhan, Henry Chang
Life of this patent
Estimating the term…
Abstract
In the event that a first user equipment (UE) device is unable to decode a packet received from a base station that provides Point-to-Multipoint (PTM) compatible services to UE devices within a service area (e.g., cell) of the base station, the first UE device transmits a request for retransmission of the packet. In one example, the request for retransmission is transmitted to one or more neighboring UE devices via a device-to-device (D2D) transmission. In response to the request for retransmission, one or more of the neighboring UE devices, which were able to successfully decode the same packet, retransmit the packet to the first UE device via a D2D communication link.
Claims26
A method comprising:
- receiving an encoded packet at a first user equipment (UE) device;
- attempting, by the first UE device, to decode the encoded packet;
- in response to successfully attempting to decode the encoded packet to retrieve decoded data, presenting the decoded data to a first user;
- in response to unsuccessfully attempting to decode the encoded packet, transmitting a request for retransmission of the encoded packet;
- receiving, at a second UE device, the request for retransmission;
- determining, at the second UE device, whether the request for retransmission was received within a retransmission time-window;
- if the request for retransmission was received within the retransmission time-window, retransmitting, by the second UE device, the encoded packet, via a first D2D communication link to the first UE device;
- receiving, at the first UE device, the retransmission of the encoded packet from the second UE device via the first D2D communication link, the first UE device associated with the first user and the second UE device associated with a second user;
- and
- successfully decoding the retransmitted encoded packet to retrieve the decoded data.
7 more elements
A system comprising:
- a first user equipment (UE) device comprising:
- a receiver configured to receive an encoded packet,
- a controller configured to decode the encoded packet and to present decoded data to a first user when the encoded packet is successfully decoded, the decoded data retrieved by successfully decoding the encoded packet, and
- a transmitter configured to transmit a request for retransmission, in response to an unsuccessful attempt to decode the encoded packet,
- the receiver further configured to receive a retransmission of the encoded packet from a second UE device via a first D2D communication link, the first UE device associated with the first user and the second UE device associated with a second user, the controller further configured to decode the retransmitted encoded packet to retrieve the decoded packet;
- a second UE device comprising:
- a receiver configured to receive the request for retransmission from the first UE device,
- a controller configured to determine whether the request for retransmission was received within a retransmission time-window, and
- a transmitter configured to retransmit the encoded packet, via the first D2D communication link, to the first UE device, if the request for retransmission was received within the retransmission time-window.
6 more elements
A first user equipment (UE) device comprising:
- a receiver configured to attempt to decode an encoded packet received at the first UE device;
- a controller configured to present decoded data to a first user in response to successfully decoding the encoded packet to retrieve the decoded data;
- and
- a transmitter configured to transmit a request for retransmission of the encoded packet in response to the receiver unsuccessfully decoding the encoded packet,
- wherein the request for retransmission is received at a second UE device to determine whether the request for retransmission was received within a retransmission time-window,
- if the request for retransmission was received within the retransmission time-window, the second UE device retransmits the encoded packet, via a first D2D communication link to the first UE device,
- the receiver configured to receive a retransmission of the encoded packet from a second UE device via a first D2D communication link and configured to decode the retransmitted encoded packet, the first UE device associated with the first user and the second UE device associated with a second user.
4 more elements
A first user equipment (UE) device comprising:
- a receiver configured to receive, from a second UE device, a request for retransmission of an encoded packet that was received and unsuccessfully decoded at the second UE device;
- a controller configured to determine whether the request for retransmission was received within a retransmission time-window, and to determine whether any other UE device has already retransmitted the encoded packet to the first UE device;
- and
- a transmitter configured to retransmit the encoded packet to the first UE device only if the encoded packet has not been retransmitted and only if the request for retransmission was received within the retransmission time-window, via a first D2D communication link to the second UE device.
1 more element
Dependencies are inferred from the claim text.