Effective data block transmission method using header indicator

• US 8,634,312 B2
• Filed: 09/18/2008
• Issued: 01/21/2014
• Est. Priority Date: 09/18/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chun, Sung-Duck, Yi, Seung-June, Park, Sung-Jun, Lee, Young-Dae
• Primary Examiner(s): Moore, Ian N
• Assistant Examiner(s): DAVENPORT, MON CHERI S
• Application Number:
  US12/678,487
• Publication Number:
  US 20100208749A1
• Time in Patent Office: 1,951 Days
• Field of Search: 370/252, 370/255, 370/310, 370/328, 370/338, 370/349, 370/389, 370/471, 370/474
• US Class Current: 370/252
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04L 69/32 Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
• CPC Class Codes: H04L 69/321 Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers
• 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

Disclosed is a radio (wireless) communication system providing a radio communication service and a terminal, and more particularly, to a method of exchanging a data block or data unit between a base station and a terminal in an Evolved Universal Mobile Telecommunications System (E-UMTS) that has evolved from a Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system, which can generate a data block to enhance efficiency of radio resources.

Claims

1. A method of generating a protocol data unit (PDU) in wireless communication system, comprising:

receiving at least one service data unit (SDU) from an upper layer to generate the protocol data unit;

determining whether single byte or two byte padding is required to complete the generation of the protocol data unit; and

inserting at least one padding indicator into the protocol data unit in order to indicate the single or two byte padding if the single byte or two byte padding is determined to be required,

wherein the at least one padding indicator is added into a header of the PDU,

wherein the header includes at least Logical Channel Identifier (LCID) field to identify a logical channel of the received SDU and a Length (L) field to indicate a length of the received SDU in bytes,

wherein the at least one padding indicator is set with a specific value in the LCID field,

wherein the service data unit is a Medium Access Control (MAC) SDU, the protocol data unit is a Medium Access Control (MAC) PDU, and the header of the PDU is a MAC PDU header,

wherein the MAC PDU header includes one or more MAC PDU sub-headers, and

wherein one or two MAC PDU sub-headers corresponding to the single byte or two byte padding are inserted before a first MAC PDU sub-header corresponding to the MAC SDU when the single byte or two byte padding is required but cannot be achieved by padding at end of the MAC PDU.

2. The method of claim 1, further comprising:

delivering the generated MAC PDU to a lower layer.

3. The method of claim 2, wherein the determining step is performed by comparing a total size of MAC PDU requested by the lower layer with a total size of the received MAC SDU together with the MAC PDU header.

4. The method of claim 1, wherein the at least one padding indicator is used to indicate an existence of a padding byte.

5. The method of claim 1, wherein the at least one padding indicator is used to indicate a size of a padding byte.