Communication system with improved medium access control sub-layer

a communication system and control sub-layer technology, applied in the field of communication systems with medium access, can solve problems such as weakening the competitiveness of communication products

Inactive Publication Date: 2006-07-13
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018] It is another object of the present invention to provide a signal processing method for performing various functions required by a communication system, using improved MAC sub-layers provided respectively in a plurality of mobile terminals and a base station.
[0019] It is yet another object of the present invention to provide a protocol operating method for executing a communication protocol among improved MAC sub-layers provided respectively in a plurality of terminals and a base station, according to requests from upper layers of the MAC sub-layers.
[0020] In accordance with one aspect of the present invention, there is provided a communication system which has a plurality of mobile terminals and a base station, each of the mobile terminals and/or base station comprising a medium access control sub-layer; upper layers of the medium access control sub-layer, and a lower layer of the medium access control sub-layer, wherein the medium access control sub-layer is configured to perform self-basic functions in response to basic function execution requests or functions associated with the upper layers or lower layer in response to requests therefrom.
[0021] In accordance with another aspect of the present invention, there is provided

Problems solved by technology

This requirement runs counter to the international communication equipment trend of lightness, thinness, smallness and compactness and becomes a primary factor of weakening the competitiveness of communication products.
For this reason, the

Method used

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Experimental program
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first embodiment

[0038]FIG. 2 is a block diagram of a protocol stack provided in each terminal or base station in a communication system in accordance with the present invention.

[0039] With reference to FIG. 2, the protocol stack is composed of a physical layer (PHY) 10, a MAC sub-layer 100 which is an upper layer of the PHY 10, a link access control (referred to hereinafter as LAC) sub-layer 200 which is an upper layer of the MAC sub-layer 100, an upper layer 300 of the LAC sub-layer 200, and an application layer 400 which is an upper layer of the layer 300. The upper layer 300 includes a protocol discriminator (PD) 310, call reference (CR) 320, call control (CC) 330, mobility management entity (MM-T) 340, radio bearer control entity (RBC) 350, radio resource control entity (RRC) 360 and terminal association control entity (TAC) 370. The application layer 400 includes a call control function (CCF) 410, mobile control function (MCF) 420 and radio access control function (RACF) 430.

[0040] In the com...

second embodiment

[0066] A method of processing signals using MAC sub-layers in a communication system in accordance with the present invention will hereinafter be described with reference to FIGS. 6 and 7A to 7J.

[0067]FIG. 6 is a flowchart illustrating an operation of controlling signals between MAC sub-layers of a mobile terminal (MT) and a network (NTWK) (or base station).

[0068] With reference to FIG. 6, first, an upper layer (MM1, RBC1 or RRC1) or application layer of the MT transfers a desired control command in the form of a primitive to a link access control 1(LAC1) of the MT at step ST31. The LAC1 transfers a request message based on the control command from the upper layer or application layer of the MT to a MAC1 of the MT at step ST32. The MAC1 of the MT sends the request message from the LAC1 to a MAC2 of the NTWK sequentially through physical layers (PHY1 and PHY2) of the MT and NTWK at step ST33. Then, the MAC2 transfers the request message from the MAC1 to a LAC2 of the NTWK at step ST...

third embodiment

[0101]FIG. 8 is a flowchart illustrating a method of processing signals using MAC sub-layers in a communication system in accordance with the present invention.

[0102] With reference to FIG. 8, for the provision of a call service between a base station and a mobile terminal through MACs included respectively therein, the mobile terminal has to send a channel request message to the base station through a reverse access channel (RACH). The channel request message is used for the request of a radio resource by the mobile terminal.

[0103] In this connection, the base station receives a message from a specific mobile terminal at step S41 and then checks at step S42 whether the received message is a channel request message through the RACH.

[0104] If it is checked at step S42 that the received message is not the channel request message, the base station provides a service corresponding to the received message at step S43. To the contrary, in the case where the received message is the chann...

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PUM

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Abstract

A communication system which has a plurality of mobile terminals and a base station, each of the mobile terminals and/or base station comprising a medium access control sub-layer, upper layers of the medium access control sub-layer, and a lower layer of the medium access control sub-layer, wherein the medium access control sub-layer is configured to perform self-basic functions in response to basic function execution requests or functions associated with the upper layers or lower layer in response to requests therefrom. According to the present invention, the communication system can provide a compatible multimedia communication service even if an originating terminal and a terminating terminal employ different communication manners, they are available from different manufacturers or they are operated by different communication service operators.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This is a Continuation Application of prior application Ser. No. 09 / 234,518 filed Jan. 21, 1999 whose entire disclosure is incorporated herein by reference. Further, this application claims the benefit of the Korean Application Nos. 16196 / 1998 filed on May 6, 1998 in Korea, 16345 / 1998 filed on May 7, 1998 in Korea and 16636 / 1998 filed on May 9, 1998 in Korea, which are hereby incorporated by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates in general to a communication system with medium access control (referred to hereinafter as MAC) sub-layers provided respectively in a plurality of mobile terminals and a base station, and more particularly to a communication system suitable for the implementation of a multimedia communication service. [0004] 2. Description of the Prior Art [0005] Recently, communication systems have very rapidly been developed in every country. Digital commun...

Claims

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Application Information

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IPC IPC(8): H04J1/16H04B1/26H04J3/16H04W24/00H04W72/06H04W74/00
CPCH04L43/0823H04W24/00H04W24/10H04W74/00
Inventor HWANG, IN TAEPARK, CHONG YEOP
Owner LG ELECTRONICS INC
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