Method and apparatus for signaling control information of uplink packet data service in mobile communication system

• US 20060165045A1
• Filed: 11/09/2005
• Published: 07/27/2006
• Est. Priority Date: 11/09/2004
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Soeng-Hun, Lieshout, Gert Jan Van
• Granted Patent: US 7,551,596 B2
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1829 Arrangements specially adapted for the receiver end
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• 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

Abstract

A method and apparatus for transmitting control information relating to an uplink packet data service from a user equipment (UE) to a Node B in a mobile communication system are provided. MAC-es protocol data units (PDUS) including data of an upper layer and a control service data unit (SDU) including control information of a MAC layer are multiplexed and contained in a MAC-e protocol data unit (PDU) transmitted in an uplink from the UE during one transmission period. In a header of the MAC-e PDU, a header part corresponding the control SDU contains a data description indicator (DDI) field set as a specific value representing that the control information is transmitted, and a header part corresponding to the MAC-es PDU contains a DDI field which represents a MAC-e flow and a logical channel relating to uplink packet data included in the second PDU, and a data size. Node B detects the control information from the control SDU based on the DDI field set as the specific value. Since the header part representing the control information has a structure similar to the header part representing the MAC-es PDU, the structure of the header is simplified, and the header size of the packet is minimized.

Claims

1. A method for transmitting control information for an uplink packet data service in a mobile communication system, the method comprising the steps of:

forming at least one first protocol data unit (PDU) comprising uplink packet data;

forming a control service data unit (SDU) comprising control information for an uplink packet data service;

forming at least one first header part corresponding to the first PDU by using a data description indicator (DDI) field representing the first PDU and an N field representing a number of uplink packet data included in the first PDU;

forming a second header part corresponding to the control SDU by using a DDI field set as a predetermined value indicative of the control SDU being transmitted; and

forming a second data packet unit (PDU) by concatenating a header and a payload, and transmitting the second PDU to a Node B, wherein the header comprises the header parts, and the payload comprises the first PDU and the control SDU.

2. The method as claimed in claim 1, wherein, forming the control SDU comprises using a type value representing a type of the control information included in the control SDU, and wherein forming the control information comprises selectively using padding bits.

3. The method as claimed in claim 2, wherein the type value represents any one of transmission power information of a user equipment (UE) to transmit the uplink packet data service, buffer status information thereof, and padding.

4. The method as claimed in claim 1, wherein the control information comprises at least one of transmission power information of a UE to transmit the uplink packet data service and buffer status information thereof.

5. The method as claimed in claim 1, wherein the second header part corresponding to the control SDU further comprises a type value representing a kind of the control information included in the control SDU.

6. The method as claimed in claim 1, wherein the DDI field inserted into the first header part represents a media access control-data (MAC-d) flow and a logical channel relating to uplink packet data included in the first PDU, and a size of the uplink packet data.

7. A method for receiving control information for an uplink packet data service in a mobile communication system, the method comprising the steps of:

receiving a first protocol data unit (PDU) formed by using a header and a payload;

demultiplexing the payload into a plurality data units, based on header parts included in the header;

dividing the data units into at least one second PDU comprising uplink packet data and a control service data unit (SDU) comprising control information for an uplink packet data service, based on data description indicator (DDI) fields of the header parts corresponding to the data units, wherein a DDI field of a header part corresponding to the control SDU has been set to a predetermined value; and

acquiring the control information from the control SDU.

8. The method as claimed in claim 7, wherein, the control SDU comprises a type value representing a kind of the control information contained in the control SDU, the control information, and selectively used padding bits.

9. The method as claimed in claim 8, wherein the type value represents any one of transmission power information of a user equipment (UE) transmitting the uplink packet data service, buffer status information thereof, and padding.

10. The method as claimed in claim 7, wherein the control information comprised at least one of transmission power information of a UE transmitting the uplink packet data service and buffer status information thereof.

11. The method as claimed in claim 7, wherein a header part corresponding to the control SDU further comprised a type value representing a kind of the control information contained in the control SDU.

12. The method as claimed in claim 7, wherein the DDI field of a header part corresponding to the second PDU represents a media access control-data (MAC-d) flow and a logical channel relating to uplink packet data included in the second PDU, and a size of the uplink packet data.

13. A user equipment (UE) for transmitting control information for an uplink packet data service in a mobile communication system, the UE comprising:

at least one block for forming at least one first protocol data unit (PDU) comprising uplink packet data;

a control unit for forming a control service data unit (SDU) comprising control information for an uplink packet data service; and

a multiplexing and transmission sequence number (TSN) setting unit for forming at least one first header part corresponding to the first PDU by using a data description indicator (DDI) field representing the first PDU and an N field representing the number of uplink packet data included in the first PDU, forming a second header part corresponding to the control SDU by using a DDI field set to a predetermined value indicative of the control SDU being transmitted, and forming a second data packet unit (PDU) by concatenating a header and a payload, the header comprising the header parts, the payload comprising the first PDU and the control SDU, wherein the second PDU is transmitted to a Node B.

14. The user equipment as claimed in claim 13, wherein the control unit forms the control SDU by using a type value representing a kind of the control information included in the control SDU, the control information, and selectively used padding bits.

15. The user equipment as claimed in claim 14, wherein the type value represents any one of transmission power information of the UE to transmit the uplink packet data service, buffer status information thereof, and padding.

16. The user equipment as claimed in claim 13, wherein the control information comprises at least one of transmission power information of the UE to transmit the uplink packet data service and buffer status information thereof.

17. The user equipment as claimed in claim 13, wherein the second header part corresponding to the control SDU further comprises a type value representing a kind of the control information included in the control SDU.

18. The user equipment as claimed in claim 13, wherein the DDI field inserted into the first header part represents a media access control-data (MAC-d) flow and a logical channel relating to uplink packet data included in the first PDU, and a size of the uplink packet data.

19. A Node B for receiving control information for an uplink packet data service in a mobile communication system, the Node B comprising:

a demultiplexing unit for receiving a first protocol data unit (PDU) comprising a header and a payload, demultiplexing the payload into a plurality data units based on header parts of the header, and dividing the data units into at least one second PDU and a control service data unit (SDU) based on data description indicator (DDI) fields of the header parts corresponding to the data units, the second PDU comprising uplink packet data, the control SDU comprising control information for an uplink packet data service, wherein a DDI field of a header part corresponding to the control SDU has been set to a predetermined value; and

a control unit for acquiring the control information from the control SDU.

20. The Node B as claimed in claim 19, wherein the control SDU comprises a type value representing a kind of the control information contained in the control SDU, the control information, and selectively used padding bits.

21. The Node B as claimed in claim 20, wherein the type value represents any one of transmission power information of a user equipment (UE) transmitting the uplink packet data service, buffer status information thereof, and padding.

22. The Node B as claimed in claim 19, wherein the control information comprises at least one of transmission power information of a UE transmitting the uplink packet data service and buffer status information thereof.

23. The Node B as claimed in claim 19, wherein a header part corresponding to the control SDU further comprises a type value representing a kind of the control information contained in the control SDU.

24. The Node B as claimed in claim 19, wherein the DDI field of a header part corresponding to the second PDU represents a media access control-data (MAC-d) flow and a logical channel relating to uplink packet data included in the second PDU, and a size of the uplink packet data.