Methods and apparatus for supporting WAN and D2D communication RLC layer handover

A method of communications, comprising:

• receiving, by a first eNB, a handover request from a first UE, wherein the handover request includes a peer identifier associated with a second UE and includes a cell identifier of a second eNB associated with the second UE;
• transmitting, by the first eNB, the handover request to the second eNB associated with the second UE;
• receiving, by the first eNB from the second eNB, a radio link control (RLC) sequence number indicating a last successful reception by the second UE;
• transmitting, by the first eNB, the RLC sequence number to the first UE;
• receiving, by the first eNB, a subsequent content item for the second UE from the first UE based on the transmitting of the RLC sequence number;
• and
• transmitting, by the first eNB, the subsequent content item to the second eNB.

An apparatus for wireless communication, comprising:

• means for transmitting, by the apparatus, a wide area network (WAN) handover request to an eNB, wherein the WAN handover request includes a peer identifier associated with a UE and a cell identifier of a second eNB associated with the UE, and wherein the apparatus and the UE are in a connected state engaged in direct device to device (D2D) communications;
• means for receiving, by the apparatus via the eNB and the second eNB, a radio link control (RLC) parameter indicating a last successful reception by the UE;
• means for determining, by the apparatus, a subsequent content item to be communicated based on the received RLC parameter;
• and
• means for transmitting, by the apparatus, the subsequent content item to the UE via the eNB and the second eNB.

An apparatus for wireless communication, comprising:

• means for receiving, by the apparatus, a handover request from a first UE, wherein the handover request includes a peer identifier associated with a second UE and a cell identifier of an eNB associated with the second UE, and wherein the first UE and the second UE are engaged in device to device (D2D) communications:
• means for transmitting, by the apparatus, the handover request to the eNB associated with the second UE;
• means for receiving, by the apparatus from the eNB, a radio link control (RLC) sequence number indicating a last successful reception by the second UE;
• means for transmitting, by the apparatus, the RLC sequence number to the first UE;
• means for receiving, by the apparatus, a subsequent content item for the second UE from the first UE based on the transmitting of the RLC sequence number;
• and
• transmitting, by the apparatus, the subsequent content item to the eNB.

An apparatus for wireless communication, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• transmit, by the apparatus, a wide area network (WAN) handover request to an eNB, wherein the WAN handover request includes a peer identifier associated with a UE and a cell identifier of a second eNB associated with the UE, and wherein the apparatus and the UE are in a connected state engaged in direct device to device (D2D) communications;
• receive, by the apparatus via the eNB and the second eNB, a radio link control (RLC) parameter indicating a last successful reception by the UE;
• determine, by the apparatus, a subsequent content item to be communicated based on the received RLC parameter;
• and
• transmit, by the apparatus, the subsequent content item to the UE via the eNB and the second eNB.

An apparatus for wireless communication, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• receive, by the apparatus, a handover request from a first UE, wherein the handover request includes a peer identifier associated with a second UE and a cell identifier of an eNB associated with the second UE, and wherein the first UE and the second UE are engaged in device to device (D2D) communication;
• transmit, by the apparatus, the handover request to the eNB associated with the second UE;
• receive, by the apparatus from the eNB, a radio link control (RLC) sequence number indicating a last successful reception by the second UE;
• transmit, by the apparatus, the RLC sequence number to the first UE;
• receive, by the apparatus, a subsequent content item for the second UE from the first UE based on the transmitting of the RLC sequence number;
• and
• transmit, by the apparatus, the subsequent content item to the eNB.

A non-transitory computer-readable medium storing computer executable code for wireless communication of a first UE, comprising code for:

• transmitting, by the first UE, a wide area network (WAN) handover request to an eNB, wherein the WAN handover request includes a peer identifier associated with a second UE and a cell identifier of a second eNB associated with the second UE, and wherein the first UE and the second UE are in a connected state engaged in direct device to device (D2D) communications;
• receiving, by the first UE via the eNB and the second eNB, a radio link control (RLC) parameter indicating a last successful reception by the second UE;
• determining, by the first UE, a subsequent content item to be communicated to the second UE based on the received RLC parameter;
• and
• transmitting, by the first UE, the subsequent content item to the second UE via the eNB and the second eNB.

A non-transitory computer-readable medium storing computer executable code for wireless communication of a first eNB, comprising code for:

• receiving, by the first eNB, a handover request from a first UE, wherein the handover request includes a peer identifier associated with a second UE and a cell identifier of a second eNB associated with the second UE, and wherein the first UE and second UE are engaged in device to device (D2D) communications;
• transmitting, by the first eNB, the handover request to the second eNB associated with the second UE;
• receiving, by the first eNB from the second eNB, a radio link control (RLC) sequence number indicating a last successful reception by the second UE;
• transmitting, by the first eNB, the RLC sequence number to the first UE;
• receiving, by the first eNB, a subsequent content item for the second UE from the first UE based on the transmitting of the RLC sequence number;
• and
• transmitting, by the first eNB, the subsequent content item to the second eNB.