No. 7 level 2 processing system for a switching unit in mobile communication and method of control thereof
AssigneeHyundai Electronics Ind. Co., Ltd.
InventorHyun Soo Paik
Life of this patent
Estimating the term…
Abstract
The present invention is provided to process more than one level 2 protocols by implementing a signalling link of the level 2 at a message transfer part in a common channel signalling system. Internal devices within a central processing unit and a control function of a signalling link controller are initialized and data of the signalling link controller received at the central processing unit is processed for transmit/receive to/from the upper level. A state of a level 3 receiver buffer within the central processing unit is checked, a primitive of data which was received from a level 3 but not processed is analyzed, and the primitive is performed at the signalling link controller, wherein a plurality of level 2 protocols can be processed.
Claims12
A No. 7 level 2 processing system for a mobile communication switching unit, said system comprising:
- a central processing unit for overall controlling the level 2 processing system via a system bus;
- a ROM for storing programs to be executed at said central processing unit;
- a RAM for storing data which has been processed at said central processing unit;
- a signalling link controller for processing level 2 protocols which are signalling terminals under control of said central processing unit, said signalling link controller comprising first to fourth signalling link controllers for processing level 2 protocols which are signalling terminals under the control of said central processing unit and first to fourth sender/receiver buffers for performing a buffering function for data transmission between said central processing unit and said first to fourth signalling link controllers;
- and
- a rate adapter for extracting time slots from the signalling terminals processed by said signalling link controller and performing multiplexing and demultiplexing to allow packets to be processed.
A method of controlling a No. 7 level 2 processing system for a mobile communication switching unit, said method comprising the steps of:
- 1) initializing internal devices of a central processing unit and a control function of a signalling link controller;
- 2) after the step 1), processing data of said signalling link controller received by said central processing unit to thereby perform transmit/receive to/from an upper level;
- 3) checking status of a level 3 receiver buffer within said central processing unit and analyzing a primitive of data which has been received from a level 3 but not processed;
- and
- 4) controlling the primitive to be performed at said signalling link controller according to a result of analyzing the primitive of the received data and returning to the step 2).
Dependencies are inferred from the claim text.