Dynamic allocation of a radio resource

• US 20040185860A1
• Filed: 12/31/2003
• Published: 09/23/2004
• Est. Priority Date: 05/08/2002
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Jokimies, Matti, Marjelund, Pekka
• Granted Patent: US 8,266,240 B2
• Time in Patent Office: Days
• US Class Current: 455/450
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/762 triggered by the network
• CPC Class Codes: H04L 47/822 Collecting or measuring resource availability data
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04L 47/826 Involving periods of time
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• 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
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]

Abstract

The present invention relates to a method and network device for allocating a radio resource, e.g. a radio bearer, to a data connection. First, a radio resource is allocated to the data connection and data transmitted via the data connection is compressed and transmitted using the allocated radio resource. During the transmission, a transmission parameter of the compressed data is monitored and the allocated radio resource is reconfigured based on the monitoring result. Thereby, the radio resource can be dynamically adapted to different data rates during the connection. Header compression benefits are available to all kinds of traffic without the disadvantage of having too low or too high data rates.

Claims

1. A method of allocating a radio resource to a data connection, said method comprising the steps of:

a) allocating a radio resource to said data connection;

b) compressing data transmitted via said data connection;

c) using said allocated radio resource for transmitting said compressed data;

d) monitoring a transmission parameter of said compressed data; and

e) reconfiguring said allocated radio resource based on the result of said monitoring step.

2. A method according to claim 1, wherein said radio resource is a radio bearer.

3. A method according to claim 1 or 2, wherein said monitored transmission parameter is a bit rate of said compressed data.

4. A method according to claim 1 or 2, wherein said monitored transmission parameter is the transmission time and wherein said allocated radio resource is reconfigured after the expiry of a predetermined time period.

5. A method according to claim 1 or 2, wherein said monitored transmission parameter is a compression state, and wherein said allocated transmission resource is reconfigured after a predetermined compression state has been reached.

6. A method according to claim 5, wherein said predetermined compression state is an FO or SO state of an ROHC compression.

7. A method according to any one of the preceding claims, wherein said data connection is an RTP or IP connection.

8. A method according to any one of the preceding claims, wherein said allocation step is performed on the basis of a bit rate required for noncompressed data.

9. A method according to any one of the preceding claims, wherein said compression is a compression of a header or a signaling or a payload or a combination of header and payload compression.

10. A method according to any one of the preceding claims, wherein said reconfiguration step is based on at least one of an information on states and/or modes of a header compressor, an information on states and/or modes of a header decompressor, a received data rate from a terminal device connected to said data connection, a compression feedback frame received from a decompressor of said terminal device, an input to said header compressor, and an output of said header decompressor.

11. A method according to any one of the preceding claims, wherein said allocation step is performed independently for uplink and downlink directions.

12. A method according to any one of the preceding claims, wherein said monitoring and reconfiguration steps are continuously performed during transmission via said data connection.

13. A network device for allocating a radio resource to a data connection, said network device comprising:

a) allocating means (RRM) for allocating a radio resource to said data connections;

b) compressing means (PDCP) for compressing data transmitted via said data connection; and

c) monitoring means (PDCP) for monitoring a transmission parameter of said compressed data;

d) wherein said allocating means (RRM) is arranged to reconfigure said allocated radio resource in response to the monitoring result of said monitoring means (PDCP).

14. A network device according to claim 13, wherein said monitoring means (PDCP) comprises a timer means for counting a time period after the start of compression by said compressing means. (PDCP) wherein said allocating means is arranged to reconfigure said allocated radio resource when a predetermined time period has been counted by said timer means.

15. A network device according to claim 13, wherein said monitoring means (PDCP) is arranged to detect a predetermined compression state of said compressed data.

16. A network device according to any one of claims 13 to 15, wherein said network device is a radio network controller device or a base station controller device.

17. A network device according to any one of claims 13 to 16, wherein said allocating means (RRM) is arranged to allocate said radio resource for uplink and downlink directions independently of each other.

18. A network device according to any one of claims 13 to 17, wherein said data connection is provided at an interface between a core network and a radio access network, in a core network or in a radio access network.

19. A terminal device for allocating a radio resource to a data connection, said network device comprising:

a) allocating means for allocating a radio resource to said data connections;

b) compressing means for compressing data transmitted via said data connection; and

c) monitoring means for monitoring a transmission parameter of said compressed data;

d) wherein said allocating means is arranged to reconfigure said allocated radio resource in response to the monitoring result of said monitoring means.

20. A terminal device according to claim 19, wherein said radio resource is allocated for data transmission between terminal devices.