Configuring compression in packet-switched data transmission

• US 20020089993A1
• Filed: 12/19/2001
• Published: 07/11/2002
• Est. Priority Date: 12/29/2000
• Status: Active Grant

• Current Assignee: Sisvel International S.A. (Fineur International S.A.)
• Original Assignee: Nokia Corporation
• Inventors: Suumaki, Jan, Tourunen, Ari
• Granted Patent: US 7,260,080 B2
• Time in Patent Office: Days
• US Class Current: 370/405
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 28/06 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 Class Codes: H04W 28/18 Negotiating wireless communication parameters

Abstract

A method of configuring a compression method for a terminal in a mobile system. The mobile system comprises a terminal for which characteristics parameters are specified comprising at least the compression methods supported by the terminal, and a radio network, in which a functional entity is configured for specifying a compression method to a radio bearer. The use of a compression method on the radio bearers of the terminal is specified on the basis of the characteristics parameters transmitted by the terminal. The user of the terminal updates the parameters specifying the compression methods of the terminal, the characteristics parameters of the terminal being modified in the terminal in accordance with this update, and the modified characteristics parameters are transmitted to a function comprised by the radio network. The modified characteristics parameters are used to configure the use of a compression method for each simultaneous radio bearer of the terminal.

Claims

1. A method of configuring the use of a compression method in a packet-switched mobile system comprising a terminal for which characteristics parameters are specified comprising at least the compression methods supported by the terminal, and a radio network, in which a functional entity is configured for configuring a compression method to a radio bearer, the method comprising

configuring the use of a compression method on simultaneous radio bearers of the terminal in said functional entity on the basis of the characteristics parameters transmitted by the terminal,

updating, by the user of the terminal, the parameters specifying the compression methods of the terminal in the terminal,

modifying the characteristics parameters of the terminal in accordance with said update,

transmitting the modified characteristics parameters to said functional entity comprised by the radio network, and

configuring the use of a compression method for each simultaneous radio bearer on the basis of the modified characteristics parameters.

2. A method as claimed in claim 1, further comprising

transmitting the modified characteristics parameters to said functional entity comprised by the radio network before a radio bearer is established.

3. A method as claimed in claim 1, further comprising

transmitting the modified characteristics parameters to said functional entity comprised by the radio network during an established radio bearer, and

reconfiguring the use of the compression methods of the simultaneous radio bearers of the terminal on the basis of the modified characteristics parameters without releasing the radio bearers.

4. A method as claimed in claim 1, wherein

said packet-switched mobile system being the UMTS system and said functional entity of the radio network for specifying a compression method for a radio bearer comprising a radio resource control protocol.

5. A method as claimed in claim 4, wherein

the message specifying the characteristics parameters being an UE_capability_information message comprising at least a selection parameter for the header field compression method for data packets supported by the convergence protocol of the terminal.

6. A method as claimed in claim 4, wherein

the message specifying the characteristics parameters is an UE_capability_information message comprising at least a selection parameter for the user data compression method for data packets supported by the convergence protocol of the terminal.

7. A terminal of a mobile communication system, the terminal comprising means for the user of the terminal to update the parameters specifying the compression methods of the terminal in the terminal and for which terminal characteristics parameters are specified that comprise at least the compression methods supported by the terminal, the terminal being arranged to

modify the characteristics parameters of the terminal in accordance with said update,

transmit the modified characteristics parameters to the radio network of the mobile communication system, and

receive from the radio network the settings of the use of a compression method on each simultaneous radio bearer of the terminal specified on the basis of said modified characteristics parameters.

8. A terminal as claimed in claim 7, wherein

the terminal is arranged to transmit the modified characteristics parameters to the radio network before the radio bearer is established.

9. A terminal as claimed in claim 7, wherein the terminal is arranged to

transmit the modified characteristics parameters to the radio network during an established radio bearer,

receive new settings for the use of a compression method specified in the radio network on the basis of the modified characteristics parameters, and

reconfigure the settings of the use of the compression methods of the simultaneous radio bearers of the terminal without releasing the radio bearers.

10. A terminal as claimed in claim 7, wherein

the terminal is a terminal supporting at least the UMTS system, the message specifying the characteristics parameters to the radio network being an UE_capability_information message comprising at least a selection parameter for the header field compression method for data packets supported by the convergence protocol of the terminal.