High-speed burst signal monitoring device

• US 4,635,247 A
• Filed: 02/22/1985
• Issued: 01/06/1987
• Est. Priority Date: 02/24/1984
• Status: Expired due to Term

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Tejima, Shunichiro
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): Chin, Wellington
• Application Number:
  US06/704,287
• Time in Patent Office: 683 Days
• Field of Search: 370/13, 370/17, 370/95, 370/104, 455/69, 375/58, 375/99
• US Class Current: 370/241
• CPC Class Codes: H04B 17/20 of receivers
• CPC Class Codes: H04B 7/212 Time-division multiple access [TDMA]

Abstract

A high-speed burst monitoring device for large capacity burst signal processing which constantly monitors receipt conditions of received burst signals in a time division multiplex access (TDMA) communications system, in which each frame comprises several individual burst signals; and, depending upon the result of examining each of the receipt conditions, transmits a control message to a remote station which has transmitted a particular burst signal. Bursts are each allocated to a particular address of high-speed store means with a burst identification number used as address data. Every time a burst signal is received, record data associated with that burst is read out of the high-speed store means, burst condition data is updated by a burst condition signal generated this time, it is determined whether a condition for the generation of a control message is satisfied, and the updated data is stored anew in the high-speed store means as the latest burst condition data. Such a procedure is repeated at a high speed whereby all the receipt condition data are integrated burst by burst to decide whether generation of a control message is needed. In the case of large capacity burst signal processing, a control message transmission request signal may be temporarily stored in a memory buffer if a massage cannot immediately be sent so as to convert the data rate between high-speed data processing sections such as burst condition decision means and low-speed data processing sections such as a message processing section.

Claims

1. A high-speed burst monitoring device for constantly monitoring receipt conditions of a stream of burst signals received in respective time frames in a time division multiplex access (TDMA) communications system and, depending upon a result of examining each of the receipt conditions, generating, if necessary, a control message for transmission to a station which has transmitted a particular burst signal, said burst monitoring device comprising:

burst condition detecting means for detecting a burst condition of a particular received burst signal in a current time frame and generating a current burst condition signal;

burst condition decision means for providing current burst condition data in response to the current burst condition signal output from said burst condition detecting means, and further in response to burst record data indicative of burst condition data derived from corresponding burst signals in prior time frames, determining whether generation of a control message is necessary and, if necessary, generating a control message transmission request signal for requesting generation of such above-mentioned control message;

high-speed store means for storing the current burst condition data, said data being indexed by a burst identification number which is assigned thereto so as to enable said current burst condition data to be read out of said high-speed store means as burst record data for succeeding time frames;

a memory buffer for temporarily storing the control message transmission request signal output from the burst condition decision means and the corresponding burst identification number and

message processing means for receiving from said memory buffer a stored control message transmission request signal and the corresponding stored burst identification number to generate a control message associated with the burst condition of the particular received burst signal and provide such control message to a transmitter for transmission.

2. A device as in claim 1, wherein said current burst condition signal is indicative of whether no burst signal has been received from a particular transmitting station in said current time frame.

3. A device as in claim 1, wherein said burst record data and current burst condition data are respectively indicative of a burst condition of burst signals received from a particular transmitting station in prior and current time frames, respectively.

4. A device as in claim 1, wherein said burst identification number includes a transmission station number and a burst number indicative of a position of such particular burst in a sequence of bursts transmitted by said transmitting station.