Techniques and apparatuses for compression enabled bearer management

Patent metadata

Field	Value
Publication number	US-10531346-B2
Application number	US-201815912250-A
Country	US
Kind code	B2
Filing date	Mar 5, 2018
Priority date	Oct 25, 2017
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter device may determine a completion of a handover or a radio link failure after transmitting a set of physical data units (PDUs). The transmitter device may retransmit a PDU, of the set of PDUs, after completion of the handover or the radio link failure to enable decompression of the set of PDUs. A receiver device may receive the retransmitted PDU. The receiver device may decompress the set of PDUs based at least in part on receiving the retransmitted PDU. Numerous other aspects are provided.

First claim

What is claimed is:

1. A method of wireless communication performed by a transmitter device, comprising:
determining a completion of a handover or a radio link failure after transmitting a set of physical data units (PDUs),
wherein acknowledgement messages, of a set of acknowledgement messages corresponding to the set of PDUs, are received in an order not sequentially corresponding to the set of PDUs, and
wherein the acknowledgement messages include:
a first acknowledgement message for a first PDU of the set of PDUs, and
a second acknowledgement message for a second PDU of the set of PDUs;

maintaining storage of the first PDU and the second PDU when the acknowledgement messages are received in the order not sequentially corresponding to the set of PDUs; and
retransmitting the first PDU and the second PDU after completion of the handover or the radio link failure to enable decompression of the set of PDUs.

2. The method of claim 1 , further comprising:
abandoning storage of another PDU after receiving the acknowledgement messages in the order not sequentially corresponding to the set of PDUs.

3. The method of claim 1 , wherein the first PDU is compressed when the first PDU is retransmitted.

4. The method of claim 1 , wherein the first PDU is uncompressed when the first PDU is retransmitted.

5. The method of claim 1 , wherein another PDU, of the set of PDUs, is an unacknowledged PDU.

6. The method of claim 1 , further comprising:
receiving a status report message,
wherein the status report message does not include an acknowledgement sequence number corresponding to a successfully decoded PDU of the set of PDUs transmitted before the handover or the radio link failure; and

wherein the retransmitting comprises:
retransmitting the successfully decoded PDU as a duplicate compressed PDU to synchronize a compression memory.

7. The method of claim 1 , further comprising:
receiving a status report message,
wherein the status report message includes an acknowledgement sequence number corresponding to a successfully decoded PDU of the set of PDUs transmitted before the handover or the radio link failure; and

wherein the retransmitting comprises:
retransmitting the successfully decoded PDU as a duplicate compressed PDU to synchronize a compression memory.

8. A transmitter device for wireless communication, comprising:
memory; and
one or more processors coupled to the memory, the memory and the one or more processors configured to:
determine a completion of a handover or a radio link failure after transmitting a set of physical data units (PDUs),
wherein acknowledgement messages, of a set of acknowledgement messages corresponding to the set of PDUs, are received in an order not sequentially corresponding to the set of PDUs, and
wherein the acknowledgement messages include:
a first acknowledgement message for a first PDU of the set of PDUs, and
a second acknowledgement message for a second PDU of the set of PDUs;

maintain storage of the first PDU and the second PDU when the acknowledgement messages are received in the order not sequentially corresponding to the set of PDUs; and
retransmit the first PDU and the second PDU after completion of the handover or the radio link failure to enable decompression of the set of PDUs.

9. The transmitter device of claim 8 , wherein the memory and the one or more processors are further configured to:
abandon storage of another PDU after receiving the acknowledgement messages in the order not sequentially corresponding to the set of PDUs.

10. The transmitter device of claim 8 , wherein the first PDU is compressed when the first PDU is retransmitted.

11. The transmitter device of claim 8 , wherein the first PDU is uncompressed when the first PDU is retransmitted.

12. The transmitter device of claim 8 , wherein another PDU, of the set of PDUs, is an unacknowledged PDU.

13. The transmitter device of claim 8 , wherein the memory and the one or more processors are further configured to:
receive a status report message,
wherein the status report message does not include an acknowledgement sequence number corresponding to a successfully decoded PDU of the set of PDUs transmitted before the handover or the radio link failure; and

wherein the memory and the one or more processors, when configured to retransmit, are configured to:
retransmit the successfully decoded PDU as a duplicate compressed PDU to synchronize a compression memory.

14. The transmitter device of claim 8 , wherein the memory and the one or more processors are further configured to:
receive a status report message,
wherein the status report message includes an acknowledgement sequence number corresponding to a successfully decoded PDU of the set of PDUs transmitted before the handover or the radio link failure; and

wherein the memory and the one or more processors, when configured to retransmit, are configured to:
retransmit the successfully decoded PDU as a duplicate compressed PDU to synchronize a compression memory.

15. A method of wireless communication performed by a receiver device, comprising:
receiving, after a completion of a handover or a radio link failure, a first retransmitted physical data unit (PDU) of a set of transmitted PDUs and a second retransmitted PDU of the set of transmitted PDUs,
wherein at least one other PDU, of the set of transmitted PDUs, is received before receiving the retransmitted PDU and a transmitted PDU, of the set of transmitted PDUs and corresponding to the retransmitted PDU, is not received,
wherein the first retransmitted PDU and the second retransmitted PDU are provided based at least in part on acknowledgement messages, of a set of acknowledgement messages corresponding to the set of transmitted PDUs, being received in an order not sequentially corresponding to the set of transmitted PDUs,
wherein the acknowledgement messages include:
a first acknowledgement message for the first transmitted PDU of the set of transmitted PDUs, and
a second acknowledgement message for a second transmitted PDU of the set of transmitted PDUs, and

wherein storage of the first transmitted PDU and the second transmitted PDU is maintained when the acknowledgement messages are received in the order not sequentially corresponding to the set of PDUs; and

decompressing the set of transmitted PDUs based at least in part on receiving the first retransmitted PDU and the second retransmitted PDU.

16. The method of claim 15 , wherein the first retransmitted PDU is provided based at least in part on the first transmitted PDU being stored after the acknowledgement messages are received in the order not sequentially corresponding to the set of transmitted PDUs.

17. The method of claim 15 , wherein storage of another PDU is abandoned after the acknowledgement messages are received in the order not sequentially corresponding to the set of transmitted PDUs.

18. The method of claim 15 , wherein the first retransmitted PDU is compressed when the first retransmitted PDU is retransmitted.

19. The method of claim 15 , wherein the first retransmitted PDU is uncompressed when the first retransmitted PDU is retransmitted.

20. The method of claim 15 , wherein another PDU is an unacknowledged PDU when the other PDU is retransmitted.

21. The method of claim 15 , further comprising:
providing a status report message,
wherein the status report message does not include an acknowledgement sequence number corresponding to a successfully decoded PDU, of

Assignees

• Qualcomm Inc

Inventors

• Bathwal Saket
• Xiao Gang
• Maheshwari Shailesh
• Upretee Rudhir
• Sallabathula Srikanth

Classifications

• H04W36/02 Primary

  Buffering or recovering information during reselection {; Modification of the traffic flow during hand-off} · CPC title

• H04L69/04

  Protocols for data compression, e.g. ROHC · CPC title

• H04L1/1657

  Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window · CPC title

• H04L1/1874

  Buffer management · CPC title

• H04W36/023

  Buffering or recovering information during reselection · CPC title