ROHC header compression for MPTCP

Patent metadata

Field	Value
Publication number	US-11824959-B2
Application number	US-202217888331-A
Country	US
Kind code	B2
Filing date	Aug 15, 2022
Priority date	Sep 29, 2017
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

Systems, methods, and mechanisms for performing ROHC header compression on TCP packets with MPTCP option enabled. A compressor may determine that a first portion of the stream of data packets is formatted according to the transmission control protocol (TCP) with a multipath TCP (MPTCP) option enabled. The compressor may establish context with a corresponding decompressor and may operate in one of three modes of compression based on the context. In some embodiments, when the context indicates that the corresponding decompressor supports decompression of TCP data packets with MPTCP option enabled, the compressor may operate in a first or second mode of compression. In some embodiments, when the context indicates that the corresponding decompressor does not support decompression of TCP data packets with MPTCP option enabled, the compressor may operation in a third mode of compression.

First claim

What is claimed is:

1. A user equipment device (UE), comprising:
at least one antenna for performing wireless communication;
at least one radio coupled to the at least one antenna, wherein the at least one radio is configured to perform cellular communication with a base station; and
one or more processors coupled to the at least one radio, wherein the one or more processors and the at least one radio are configured to perform wireless communications using the at least one antenna; and
wherein at least one of the one or more processors is configured to operate as a data compressor to:
determine that a portion of a stream of data packets is formatted according to a transmission control protocol (TCP) with a multipath TCP (MPTCP) option enabled; and
establish context with a corresponding decompressor;

wherein, when the established context indicates that the corresponding decompressor supports decompression of TCP data packets with MPTCP option enabled, the at least one of the one or more processors is further configured to operate as the data compressor to perform, based on the established context with the corresponding decompressor, a multi-mode Robust Header Compression (ROHC) on the stream of data packets; and
wherein, when the established context indicates that the corresponding decompressor does not support ROHC decompression of TCP data packets with the MPTCP option enabled, the at least one of the one or more processors is further configured to operate as the data compressor to transmit the portion of the stream of data packets with the MPTCP option enabled without compression and transmit a second portion of the stream of data packets with the MPTCP option not enabled with ROHC.

2. The UE of claim 1 ,
wherein, in a first mode of the multi-mode ROHC, the MPTCP option is not compressed, and wherein in a second mode of the multi-mode ROHC, the MPTCP option is compressed.

3. The UE of claim 1 ,
wherein the determination is based on information comprised in headers of the stream of data packets.

4. The UE of claim 1 ,
wherein to establish the context with the corresponding decompressor, the at least one of the one or more processors is further configured to operate as the data compressor to:
receive an error indicating that the corresponding decompressor does not support ROHC decompression of TCP data packets with the MPTCP option enabled.

5. The UE of claim 1 ,
wherein in a second mode of the multi-mode ROHC, the at least one of the one or more processors is further configured to operate as the data compressor to:
transmit the portion of the stream of data packets with the MPTCP option enabled with ROHC; and
transmit the second portion of the stream of data packets with the MPTCP option not enabled with ROHC.

6. The UE of claim 1 ,
wherein to perform ROHC in a second mode of the multi-mode ROHC, the at least one of the one or more processors is further configured to operate as the data compressor to:
determine that a first portion of the stream of data packets include an MPTCP subtype that supports the second mode of the multi-mode ROHC.

7. The UE of claim 6 ,
wherein the MPTCP subtype comprises subtype 0x02.

8. A compressor, comprising:
a memory; and
a processing element in communication with the memory, wherein the processing element is configured to:
determine that a portion of a stream of data packets is formatted according to a transmission control protocol (TCP) with a multipath TCP (MPTCP) option enabled; and
establish context with a corresponding decompressor;

wherein, when the established context indicates that the corresponding decompressor supports decompression of TCP data packets with MPTCP option enabled, the processing element is further configured to perform, based on the established context with the corresponding decompressor, a multi-mode Robust Header Compression (ROHC) on the stream of data packets; and
wherein, when the established context indicates that the corresponding decompressor does not support ROHC decompression of TCP data packets with the MPTCP option enabled, the processing element is further configured to transmit the portion of the stream of data packets with the MPTCP option enabled without compression and transmit a second portion of the stream of data packets with the MPTCP option not enabled with ROHC.

9. The compressor of claim 8 ,
wherein, in a first mode of the multi-mode ROHC, the MPTCP option is not compressed, and wherein in a second mode of the multi-mode ROHC, the MPTCP option is compressed.

10. The compressor of claim 8 ,
wherein the determination is based on information comprised in headers of the stream of data packets.

11. The compressor of claim 8 ,
wherein to establish the context with the corresponding decompressor, the processing element is further configured to:
receive an error indicating that the corresponding decompressor does not support ROHC decompression of TCP data packets with the MPTCP option enabled.

12. The compressor of claim 8 ,
wherein to perform ROHC in a second mode of the multi-mode ROHC, the processing element is further configured to:
determine that a first portion of the stream of data packets include an MPTCP subtype that supports the second mode of the multi-mode ROHC.

13. The compressor of claim 12 ,
wherein the MPTCP subtype comprises subtype 0x02.

14. A non-transitory computer readable memory medium storing program instructions executable by processing circuitry of a user equipment device (UE) to:
determine that a portion of a stream of data packets is formatted according to a transmission control protocol (TCP) with a multipath TCP (MPTCP) option enabled; and
establish context with a corresponding decompressor;
wherein, when the established context indicates that the corresponding decompressor supports decompression of TCP data packets with MPTCP option enabled, the program instructions are further executable by the processing circuitry of the UE to perform, based on the established context with the corresponding decompressor, a multi-mode Robust Header Compression (ROHC) on the stream of data packets; and
wherein, when the established context indicates that the corresponding decompressor does not support ROHC decompression of TCP data packets with the MPTCP option enabled, the program instructions are further executable by the processing circuitry of the UE to transmit the portion of the stream of data packets with the MPTCP option enabled without compression and transmit a second portion of the stream of data packets with the MPTCP option not enabled with ROHC.

15. The non-transitory computer readable memory medium of claim 14 ,
wherein, in a first mode of the multi-mode ROHC, the MPTCP option is not compressed, and wherein in a second mode of the multi-mode ROHC, the MPTCP option is compressed.

16. The non-transitory computer readable memory medium of claim 14 ,
wherein the determination is based on information comprised in headers of the stream of data packets.

17. The non-transitory computer readable memory medium of claim 14 ,
wherein to establish the context with the corresponding decompressor, the program instructions are further executable by the processing circuitry of the UE to:
receive an error indicating that the corresponding decompressor does not support ROHC decompression of TCP data packets with the MPTCP option enabled.

18. The non-transitory computer readable memory medium of claim 14 ,
wherein in a second mode of the multi-mode ROHC, the program instructions are further executable by

Assignees

• Apple Inc

Inventors

• Zhao Yingjie
• Shi Jianxiong
• Cui Lele
• Su Li
• Faheem Faraz

Classifications

• H04L69/04 Primary

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

• H04L69/14

  Multichannel or multilink protocols · CPC title

• H04L69/16

  Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] · CPC title

• H04L69/22

  Parsing or analysis of headers · CPC title

• H04W28/06

  Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} · CPC title