Apparatus and method for exchanging variable-length data according to radio link protocol in mobile communication system

• US 6,665,313 B1
• Filed: 05/10/2000
• Issued: 12/16/2003
• Est. Priority Date: 05/10/1999
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Hyun-Seok, Koo, Chang-Hoi, Kim, Dae-Gyun, Chang, Hoon
• Primary Examiner(s): HO, DUC CHI
• Application Number:
  US09/568,276
• Time in Patent Office: 1,315 Days
• Field of Search: 370/335, 370/342, 370/320, 370/469, 370/470, 370/466, 370/471, 714/701, 709/236, 455/560, 455/426, 455/422
• US Class Current: 370/469
• CPC Class Codes: H04B 7/2628 using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] H04B7/2618 takes precedence
• CPC Class Codes: H04L 1/1614 using bitmaps
• CPC Class Codes: H04L 1/1809 Selective-repeat protocols
• CPC Class Codes: H04L 1/1883 using multiple timers
• 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 80/02 Data link layer protocols
• CPC Class Codes: H04W 99/00 Subject matter not provided for in other groups of this subclass

Abstract

An information frame of a new format transmitted according to a radio link protocol (RLP), and a device and method for transmitting and receiving the information frame in a mobile communication system. The information frame is comprised of a plurality of consecutive multiplex frames each having a given length. The multiplex frames each are comprised of a header and a succeeding RLP frame, and the RLP frame includes transmission data. At least one of the multiplex frames is comprised of a plurality of sub-multiplex frames, and each sub-multiplex frame is comprised of a header including an RLP service identifier field and a length indication field for indicating a length of the transmission data, and a data block associated to the succeeding RLP frame.

Claims

1. An information frame comprised of a plurality of consecutive multiplex frames each having a given length, each multiplex frame comprised of a header and a succeeding radio link protocol (RLP) frame, said RLP frame including a transmission data, wherein at least one of the multiplex frames is comprised of a plurality of sub-multiplex frames, and each sub-multiplex frame is comprised of a header including a RLP service identifier and a length indication field for indicating a length of the transmission data, and a data block associated with the succeeding RLP frame.

2. The information frame as claimed in claim 1, wherein the length indication field is comprised of a length indicator for indicating whether there exists one succeeding RLP data block, and a length field for indicating a length of the succeeding RLP data block.

3. The information frame as claimed in claim 1, wherein the length indication field is comprised of a length indicator for indicating whether there exists one succeeding RLP data block, and a reserved field for indicating a length of the succeeding RLP data block.

4. An information frame comprised of a plurality of consecutive multiplex frames each having a given length, each multiplex frame comprised of a header and a succeeding radio link protocol (RLP) frame, said RLP frame including a transmission data, wherein the multiplex frames are each comprised of a header including a RLP service identifier and a length indication field for indicating a length of the transmission data, and a data block associated with the succeeding RLP frame.

5. A method for transmitting frames in a mobile communication system which transmits frames for several services, the method comprising the steps of:

creating a multiplex frame of a given length including at least one of the RLP frame determined according to a service priority, the RLP frame including a header comprised of a RLP service identifier indicating a service of the RLP frame and a length indicator indicating a length of the RLP frame; and

assembling a plurality of the consecutive multiplex frames into an information frame of a predetermined length and transmitting the information frame.

6. A data transmission device in a mobile communication system comprising:

a plurality of RLP processors each for processing unique service data and generating a RLP frame of a predetermined length;

a multiplexing controller for determining a length of the RLP frame generated from the RLP processors, and assembling a multiplex frame having a first length including at least one RLP frame generated from the RLP processors, including a header comprised of a service identifier indicating a service of the RLP frame and a length indicator indicating a length of the RLP frame; and

a physical layer processor for assembling a plurality of the consecutive multiplex frames into an information frame of a second length and transmitting the information frame.

7. A method for receiving frames in a mobile communication system which receives an information frame comprised of a plurality of consecutive multiplex frames, each multiplex frame including at least one RLP frame, at the head of which a header is attached which is comprised of a service identifier indicating a service of the RLP frame and a length indicator indicating a length of the RLP frame, the method comprising the steps of:

demultiplexing the multiplex frame included in the received information frame; and

separating at least one RLP frame included in a demultiplexed frame according to the services using the length indicator of the header, and outputting the separated RLP frame to the corresponding service for processing.

8. A device for receiving frames in a mobile communication system which receives an information frame comprised of a plurality of consecutive multiplex frames, said each multiplex frame including at least one RLP frame, at the head of which a header is attached which is comprised of a service identifier indicating a service of the RLP frame and a length indicator indicating a length of the RLP frame, the device comprising:

a demultiplexing controller for separating at least one RLP frame included in the multiplex frame in the received information frame according to the services using the length indicator of the header; and

a plurality of RLP processors for performing a corresponding service on the separated RLP frame.