Apparatus and method for transmitting/receiving multiuser packet in a mobile communication system

• US 8,842,695 B2
• Filed: 01/09/2006
• Issued: 09/23/2014
• Est. Priority Date: 01/07/2005
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jung, Jung-Soo, Bae, Beom-Sik, Kim, Dae-Gyun, Kim, Yu-Chul
• Primary Examiner(s): Rinehart, Mark
• Assistant Examiner(s): Crompton, Christopher R
• Application Number:
  US11/327,472
• Publication Number:
  US 20060153126A1
• Time in Patent Office: 3,179 Days
• Field of Search: 370/474, 370/58.1, 370/473, 455/432, 455/439, 714/755
• US Class Current: 370/474
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections
• 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 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Abstract

An apparatus and method is provided for generating one packet with transmission data and transmitting the packet from an access network transceiver system (ANTS) to a plurality of access terminals (ATs) in a mobile communication system including the ATs and the ANTS which are capable of performing packet data communication with ATs located in coverage thereof. The method includes the steps of generating a medium access control (MAC) header including information on a receiving AT'"'"'s address, a length and format for transmission data, generating a MAC payload by consecutively connecting data units to be transmitted to the receiving AT, and generating a MAC trailer. The ANTS pads ‘0’ bits to the MAC header if a predetermined MAC size is greater than a sum of lengths of the MAC header, the MAC payload and the MAC trailer.

Claims

1. A method for generating a multi user packet with transmission data and transmitting the multiuser packet from an access network transceiver system (ANTS) to a plurality of access terminals (ATs) in a mobile communication system including the ATs and the ANTS which are capable of performing packet data communication with ATs located in coverage thereof, the method comprising the steps of:

generating a medium access control (MAC) header comprising n fields each for a different user packet of the multiuser packet, each field including an address of an AT receiving the user packet, a length of the user packet and a format for transmission data of the user packet;

generating a MAC payload by consecutively connecting the n user packets such that each user packet of the n user packets is placed in the MAC payload; and

generating a MAC trailer;

wherein ‘

0’

bits are padded to an end field of the MAC header if a predetermined size of the multiuser packet is greater than a sum of lengths of the MAC header, the MAC payload and the MAC trailer.

2. The method of claim 1, wherein 1≦

n≦

8.

3. The method of claim 1, wherein the ‘

0’

bits are padded in octet unit.

4. The method of claim 1, wherein ‘

0’

bits are padded to the end of the MAC payload, and the number of ‘

0’

bits padded to the end of the MAC payload is determined by difference between the predetermined size of the multiuser packet and a sum of lengths of the MAC header, the MAC payload, the MAC trailer, and the ‘

0’

bits padded to the end field of the MAC header.

5. The method of claim 4, wherein the ‘

0’

bits are padded to the end of the MAC payload after the ‘

0’

bits are padded to the end field of the MAC header.

6. An apparatus for generating a multiuser packet with transmission data and transmitting the multiuser packet from an access network transceiver system (ANTS) to a plurality of access terminals (ATs) in a mobile communication system including the ATs and the ANTS which are capable of performing packet data communication with ATs located in coverage thereof, the apparatus comprising:

data queues for storing data to be transmitted to each of the ATs;

a controller for performing a control operation of generating a medium access control (MAC) header comprising n fields each for a different user packet of the multiuser packet, each field including an address of an AT receiving the user packet, a length of the user packet and a format for transmission data of the user packet, generating a MAC trailer, and generating a MAC payload by consecutively connecting n user packets such that each user packet of the n user packets is placed in the MAC payload, and performing a control operation of padding ‘

0’

bits to an end field of the MAC header if a predetermined size of the multiuser packet is greater than a sum of lengths of the MAC header, the MAC payload and the MAC trailer; and

a data generation and transmission/reception unit for, under the control of the controller, combining the data stored in the data queues and information output from the controller, and transmitting the combined data to the ATs.

7. The apparatus of claim 6, wherein 1≦

n≦

8.

8. The apparatus of claim 6, wherein the controller pads the ‘

0’

bits in octet unit.

9. The apparatus of claim 6, wherein the controller pads ‘

0’

bits to the end of the MAC payload, and the number of ‘

0’

bits padded to the MAC payload is determined by difference between the predetermined size of the multiuser packet and a sum of lengths of the MAC header, the MAC payload, the MAC trailer, and the ‘

0’

bits padded to the end field of the MAC header.

10. The apparatus of claim 9, wherein the controller pads the ‘

0’

bits to the end of the MAC payload after padding the ‘

0’

bits to the end field of the MAC header.

11. A method for a first access terminal (AT) to receive a multiuser packet in a mobile communication system including access terminals (ATs) and an access network transceiver system (ANTS) that performs packet communication with ATs located in coverage thereof, and generates the multiuser packet with transmission data to be transmitted to two or more ATs, the method comprising the steps of:

receiving the multiuser packet from the ANTS, wherein the multiuser packet comprises a medium access control (MAC) header comprising n fields each for a different user packet of the multiuser packet, each field including an address of an AT receiving the user packet, a MAC payload generated by consecutively connecting the n user packet such that each user packet of the n user packets is placed in the MAC payload, and a MAC trailer, wherein ‘

0’

bits are padded to an end field of the MAC header if a predetermined size of the multiuser packet is greater than a sum of lengths of the MAC header, the MAC payload and the MAC trailer;

determining whether address information of the first AT is included in the MAC header of the received multiuser packet; and

extracting data indicated by the MAC header from the MAC payload of the multiuser packet if the address information of the first AT is included in the MAC header.

12. The method of claim 11, wherein 1≦

n≦

8.

13. The method of claim 11, wherein the ‘

0’

bits are padded in octet unit.

14. The method of claim 11, wherein ‘

0’

bits are padded to the MAC payload, and the number of ‘

0’

bits padded to the end of the MAC payload is determined by difference between the predetermined size of the multiuser packet and a sum of lengths of the MAC header, the MAC payload, the MAC trailer, and the ‘

0’

bits padded to the end field of the MAC header.

15. The method of claim 14, wherein the ‘

0’

bits are padded to the end of the MAC payload after the ‘

0’

bits are padded to the end field of the MAC header.

18. The apparatus of claim 12, wherein 1≦

n≦

8.

19. The apparatus of claim 12, wherein the ‘

0’

bits are padded in octet unit.

16. An apparatus for a first access terminal (AT) to receive a multiuser packet in a mobile communication system including access terminals (ATs) and an access network transceiver system (ANTS) that performs packet communication with ATs located in coverage thereof, and generates the multiuser packet with transmission data to be transmitted to two or more ATs, the apparatus comprising:

a reception data processor for receiving the multiuser packet from the ANTS, wherein the multiuser packet comprises a medium access control (MAC) header comprising n fields each for a different user packet of the multiuser packet, each field including an address of an AT receiving the user packet, a MAC payload generated by consecutively connecting the n user packet such that each user packet of the n user packets is placed in the MAC payload, and a MAC trailer, wherein ‘

0’

bits are padded to an end field of the MAC header if a predetermined size of the multiuser packet is greater than a sum of lengths of the MAC header, the MAC payload and the MAC trailer, and demodulating and decoding the received multiuser packet; and

a controller for determining whether address information of the first AT is included in the MAC header of the received multiuser packet, and extracting data indicated by the MAC header from the MAC payload of the multiuser packet if the address information of the first AT is included in the MAC header.

17. The apparatus of claim 16, wherein the MAC header further comprises a length of the user packet and a format for transmission data of the use packet.

20. The apparatus of claim 16, wherein the MAC header further comprises a length of the user packet and a format for transmission data of the user packet.

21. The apparatus of claim 16, wherein ‘

0’

bits are padded to the end of the MAC payload, and the number of ‘

0’

bits padded to the MAC payload is determined by difference between the predetermined size of the multiuser packet and a sum of lengths of the MAC header, the MAC payload, the MAC trailer, and the ‘

0’

bits padded to the end field of the MAC header.

22. The apparatus of claim 21, wherein the ‘

0’

bits are padded to the end of the MAC payload alter the ‘

0’

bits are padded to the end field of the MAC header.