Method and apparatus for scheduling assignment of uplink packet transmission in mobile telecommunication system

• US 20050047416A1
• Filed: 08/25/2004
• Published: 03/03/2005
• Est. Priority Date: 08/26/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Choi, Sung-Ho, Heo, Youn-Hyoung, Kim, Young-Bum, Jeong, Kyeong-In, Lee, Ju-Ho, Kwak, Young-Jun
• Granted Patent: US 8,175,039 B2
• Time in Patent Office: Days
• US Class Current: 370/395.400
• CPC Class Codes: H04W 28/14 using intermediate storage
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/52 based on load
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 8/24 Transfer of terminal data

Abstract

A method and an apparatus for reporting a buffer status of a buffer storing packet data to be transmitted by a user equipment for a scheduling assignment of an uplink packet data service in a mobile communication system supporting the uplink packet data service are disclosed. A user equipment stores packet data having a priority corresponding to a plurality of priority queues having inherent priorities and relating to at least one service, and transmits buffer status information containing queue identifiers of the priority queues and buffer payload information representing an amount of the packet data stored in the priority queues. Herein, the user equipment inserts the buffer status information into a header part of a protocol data unit for the uplink packet data service, inserts the packet data into a payload part of the protocol data unit, and then transmits the protocol data unit.

Claims

1. A method for reporting a status of a buffer storing packet data to be transmitted by a user equipment (UE) for a scheduling assignment of an uplink packet data service in a mobile communication system supporting the uplink packet data service, the method comprising the steps of:

a) storing packet data having a priority corresponding to a plurality of priority queues relating to at least one service; and

b) transmitting buffer status information containing queue identifiers of the priority queues and buffer payload information representing an amount of the packet data stored in the priority queues.

2. The method as claimed in claim 1, wherein, in step b), the buffer status information is inserted into a header part of a protocol data unit (PDU) for the uplink packet data service and the packet data is inserted into a payload part of the protocol data unit, and then the protocol data unit is transmitted.

3. The method as claimed in claim 2, wherein the buffer status information includes:

a queue identifier map representing at least one priority queue, in which the stored data exists, from among the priority queues;

an identifier of at least one priority queue represented by the queue identifier map; and

a size of the data stored in at least one priority queue represented by the queue identifier map.

4. The method as claimed in claim 2, wherein the header part is a media access control (MAC) signaling header for an enhanced uplink dedicated channel (EUDCH).

5. The method as claimed in claim 1, further comprising a step of receiving scheduling assignment information corresponding to the buffer status from a Node B providing the service to the user equipment, first reading packet data having a high priority from the priority queues according to the scheduling assignment information, and transmitting the read packet data.

6. A method which enables a user equipment to report scheduling information for a scheduling assignment of an uplink packet data service in a mobile communication system supporting the uplink packet data service, the method comprising the steps of:

generating a protocol data unit including a header part and a payload part for the uplink packet data service; and

inserting the scheduling information into the header part, inserting packet data for the uplink packet data service into the payload part, and transmitting the protocol data unit.

7. The method as claimed in claim 6, wherein the scheduling information contains queue identifiers representing a plurality of priority queues having inherent priorities and relating to at least one service, and buffer payload information representing an amount of packet data stored in the priority queues.

8. The method as claimed in claim 7, wherein the buffer payload information includes:

a queue identifier map representing at least one priority queue, in which the stored data exists, from among the priority queues;

an identifier of at least one priority queue represented by the queue identifier map; and

a size of the data stored in at least one priority queue represented by the queue identifier map.

9. The method as claimed in claim 6, wherein the header part is a media access control signaling header for an enhanced uplink dedicated channel.

10. The method as claimed in claim 7, further comprising a step of receiving scheduling assignment information corresponding to the scheduling information from a Node B providing the service to the user equipment, and first transmitting packet data having a high priority according to the scheduling assignment information.

11. An apparatus for reporting a status of a buffer storing packet data to be transmitted by a user equipment for a scheduling assignment of an uplink packet data service in a mobile communication system supporting the uplink packet data service, the apparatus comprising:

a plurality of priority queues having same priorities, for storing packet data relating to at least one service;

a scheduling controller for generating buffer status information containing queue identifiers of the priority queues and buffer payload information representing an amount of the packet data stored in the priority queues; and

transmission unit for transmitting the buffer status information.

12. The apparatus as claimed in claim 11, wherein the transmission unit comprises a protocol data unit generator for generating a protocol data unit containing a header part and a payload part for the uplink packet data service, inserting the buffer status information into the header part, and inserting packet data read from the priority queues into the payload part.

13. The apparatus as claimed in claim 12, wherein the buffer status information includes:

a queue identifier map representing at least one priority queue, in which the stored data exists, from among the priority queues;

an identifier of at least one priority queue represented by the queue identifier map; and

a size of the data stored in at least one priority queue represented by the queue identifier map.

14. The apparatus as claimed in claim 12, wherein the header part is a media access control signaling header for an enhanced uplink dedicated channel.

15. The apparatus as claimed in claim 11, wherein the scheduling controller receives scheduling assignment information corresponding to the buffer status from a Node B providing the service to the user equipment, and controls the priority queues to first output packet data having a high priority according to the scheduling assignment information.

16. An apparatus which enables a user equipment to report scheduling information for a scheduling assignment of an uplink packet data service in a mobile communication system supporting the uplink packet data service, the apparatus comprising:

a plurality of priority queues having same priorities, for storing packet data relating to at least one service; and

a protocol data unit generator for generating a protocol data unit containing a header part and a payload part for the uplink packet data service, receiving packet data outputted from the priority queues, inserting the scheduling information into the header part, inserting packet data into the payload part, and transmitting the protocol data unit.

17. The apparatus as claimed in claim 16, wherein the scheduling information contains queue identifiers representing the priority queues having inherent priorities and relating to at least one service, and buffer payload information representing an amount of packet data stored in the priority queues.

18. The apparatus as claimed in claim 17, wherein the scheduling information includes:

a queue identifier map representing at least one priority queue, in which the stored data exists, from among the priority queues;

an identifier of at least one priority queue represented by the queue identifier map; and

a size of the data stored in at least one priority queue represented by the queue identifier map.

19. The apparatus as claimed in claim 16, wherein the header part is a media access control signaling header for an enhanced uplink dedicated channel.

20. The apparatus as claimed in claim 17, further comprising a scheduling controller for receiving scheduling assignment information corresponding to the scheduling information from a Node B providing the service to the user equipment, and controlling the priority queues to first output packet data having a high priority according to the scheduling assignment information.

21. A Node B apparatus for scheduling an uplink packet data service from a user equipment in a mobile communication system, the Node B comprising:

a reception unit for a protocol data unit containing a header part and a payload part for the uplink packet data service;

a header detection unit for detecting scheduling information for the uplink packet data service from the header part of the protocol data unit and detecting packet data from the payload part of the protocol data unit;

a scheduler for generating scheduling assignment information for the uplink packet data service according to the scheduling information; and

a transmission unit for transmitting the scheduling assignment information to the user equipment.

22. The Node B apparatus as claimed in claim 21, wherein the scheduling information contains queue identifiers representing the priority queues having inherent priorities and relating to at least one service, and buffer payload information representing an amount of packet data stored in the priority queues.

23. The Node B apparatus as claimed in claim 22, wherein the payload information includes:

a queue identifier map representing at least one priority queue, in which the stored data exists, from among the priority queues;

an identifier of at least one priority queue represented by the queue identifier map; and

a size of the data stored in at least one priority queue represented by the queue identifier map.

24. The Node B apparatus as claimed in claim 21, wherein the header part is a media access control signaling header for an enhanced uplink dedicated channel.