Evolved data compression scheme signaling

Patent metadata

Field	Value
Publication number	US-2016142518-A1
Application number	US-201514939137-A
Country	US
Kind code	A1
Filing date	Nov 12, 2015
Priority date	Nov 14, 2014
Publication date	May 19, 2016
Grant date	—

Abstract

Methods, systems, and devices are described for wireless communication at a UE. In aspects, a receiver may receive a transmission requesting information about support for data compression. The receiver may determine parameters related to the types of supported data compression and communicate the information to the transmitting device. In some cases, the receiver may then receive a message from the transmitting entity that requests establishment of a data compression configuration. The receiver may respond with confirmation or rejection of the proposed compression configuration. If the configuration is confirmed, the transmitter and receiver may exchange compressed data packets according to the configuration. The devices may exchange status and control information related to the compression configuration (e.g., in a compression header of a compressed message or a separate status and/or control information message).

First claim

What is claimed is:

1 . A method of communication at a wireless device, comprising:
receiving a compression capability request related to a capability for compressing a payload of a wireless data transmission; identifying at least one compression capability parameter based on the compression capability request; and transmitting a compression capability response based at least in part on the compression capability request and the at least one compression capability parameter.

2 . The method of claim 1 , further comprising:
receiving a compression configuration request.

3 . The method of claim 2 , further comprising:
transmitting a compression configuration confirmation or rejection based at least in part on the compression configuration request.

4 . The method of claim 1 , further comprising:
transmitting and receiving a compressed packet based at least in part on the compression capability response.

5 . The method of claim 4 , wherein the compressed packet comprises one or more extended compression header fields indicating at least one of:
a compression context reset request, a compression disable request associated with a number of subsequent packets, a compression context synchronization indication, a compression context freeze request, a multi-part compression indicator associated with a plurality of compression contexts, or a compression metadata indicator.

6 . The method of claim 5 , further comprising:
transmitting a context identification (ID) save confirmation request; and receiving a context ID save confirmation.

7 . The method of claim 1 , further comprising:
transmitting a compression control message.

8 . The method of claim 7 , wherein transmitting the compression control message comprises:
transmitting the compression control message on a high priority radio bearer.

9 . The method of claim 7 , wherein the compression control message is based at least in part on a determination that an amount of available wireless device processing resources is below a threshold, or based on a determination that the wireless device has failed to decompress or decode a number of packets.

10 . The method of claim 7 , wherein the compression control message comprises at least one of a compression state indication, a compression scope indication, a data compression threshold, a compression enable/disable indication, a compressed packet ratio, or a context ID reset request.

11 . The method of claim 1 , further comprising:
transmitting a compression status indication.

12 . The method of claim 11 , wherein the compression status indication comprises at least one of a ciphered packet data convergence protocol (PDCP) control protocol data unit (PDU) type, an unciphered PDCP control PDU type, a sequence number, or a compression enable/disable indication.

13 . The method of claim 11 , wherein transmitting the compression status indication comprises:
disabling or enabling compression on a radio bearer; and transmitting the compression status indication after a last or before a first compressed data protocol data unit (PDU) is transmitted.

14 . The method of claim 1 , further comprising:
transmitting a compression enable request or a compression disable request based at least in part on at least one of a processing limitation, a traffic type, or a determination that a resource grant volume is sufficient to clear an uncompressed memory buffer during one or more periodic intervals.

15 . The method of claim 1 , wherein the compression capability parameter comprises a compression rate support parameter or a compression context prefill configuration.

16 . The method of claim 1 , further comprising:
disabling a PDCP discard timer based at least in part on the compression capability request.

17 . The method of claim 1 , further comprising:
storing a compressed version of a packet; storing an uncompressed version of the packet; and resetting a context ID based on the uncompressed version of the packet.

18 . A method of communication at a wireless device, comprising:
transmitting a compression capability request related to a capability for compressing a payload of a wireless data transmission; receiving a compression capability response based at least in part on the compression capability request; and selecting a compression configuration based at least in part on the compression capability response.

19 . A method for wireless communication, comprising:
identifying a compression option associated with a wireless communication session, wherein the compression option is associated with at least a compression context in the wireless communication session; generating a compression header for a data packet, wherein the compression header comprises a compression scheme portion that identifies the compression option; and transmitting the compression header and the data packet during the wireless communication session.

20 . The method of claim 19 , further comprising:
conveying, via the compression option, a compression context identification (ID) which identifies the compression context applied to one or more portions of the data packet.

21 . The method of claim 20 , further comprising:
indicating to a receiver, via the compression option, to reset a compression scheme to a compression context ID or to store the compression context using the compression context ID.

22 . The method of claim 20 , further comprising:
indicating to a receiver, via the compression option, to apply the compression context ID to additional data packets transmitted subsequent to the transmission of the data packet without updating the compression context.

23 . The method of claim 20 , further comprising:
indicating, via the compression option, that the compression context ID applies to a part of an un-compressed portion of the data packet, wherein the part to which the compression context ID applies is indicated by a length of that part, the length of the part being indicated with the compression context ID or via a separate length indicator field.

24 . The method of claim 23 , wherein the part to which the compression context ID applies is indicated by an absence of a length field indicating a length of that part, wherein the part is a remaining portion of the data packet.

25 . The method of claim 19 , further comprising:
indicating, via the compression option, that at least one data packet transmitted subsequent to the transmission of the data packet will not include the compression header, or that current and subsequent data packets will not include a compression metadata.

26 . The method of claim 19 , further comprising:
pre-negotiating a compression context identification (ID) and a corresponding compressed portion of the data packet; and using the compression scheme portion to indicate that the compression option is a null value.

27 . The method of claim 19 , further comprising:
using the compression option to indicate a compression context identification (ID) and a corresponding compressed portion of the data packet.

28 . The method of claim 27 , wherein the corresponding compressed portion of the data packet is indicated by a length of the corresponding compressed portion, wherein the length is indicated in a dedicated length field indicator of the compression option.

Assignees

• Qualcomm Inc

Inventors

• Raina Ashwini
• Maheshwari Shailesh
• Dalmiya Vishal
• Balasubramanian Srinivasan
• Kapoor Rohit
• Ahmadzadeh Seyed Ali
• Zacharias Leena

Classifications

• H04W28/0289

  Congestion control (load shedding arrangements in network planning H04W16/08; performing reselection for handling the traffic H04W36/22; wireless traffic scheduling H04W72/12) · CPC title

• H04L69/04 Primary

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

• H04L67/5651

  Reducing the amount or size of exchanged application data · CPC title

• H04L69/24

  Negotiation of communication capabilities · CPC title

• H04W28/18

  Negotiating wireless communication parameters · CPC title