Method for controlling the communication priority of communication packets and exchange employing the method
AssigneeKabushiki Kaisha Toshiba
InventorTamiya Ochiai
Life of this patent
Estimating the term…
Abstract
Packet communication is effected by variably setting a control priority on the basis of a call priority value set as a fixed value at the time of call setting as well as a packet priority value variably designated by a transmission packet during communication. While a packet priority is being designated in correspondence with the degree of importance of the packet, the relevant packet can be communicated with a truly desirable priority corresponding to that degree of importance, thereby contributing to the effective utilization of a memory resource in an exchange and a trunk transmission zone.
Claims15
A method for controlling a communication priority of communication packets comprising the steps of:
- conducting connection processing for determining in advance a communication path and a communication channel between a calling terminal and a called terminal on the basis of call information from said calling terminal in an exchange interpose in the communication path prior to commencing packet communication;
- setting a call priority value presented in the call information from said calling terminal, said setting being effected with respect to each connection at the time of connection processing;
- setting a packet priority value for each packet being communicated during packet communication;
- setting a control priority value on the basis of the call priority value and the packet priority value;
- and
- controlling the communication priority of a communication packet on the basis of the control priority value.
An exchange, comprising:
- connection processing means for determining in advance a communication path and a communication channel between a calling terminal and a called terminal on the basis of call information from said calling terminal prior to commencing packet communication;
- call priority value setting means for setting a call priority value presented in the call information from said calling terminal which is used for connection processing in said connection processing means, said setting being effected with respect to each connection;
- packet priority value extracting means for extracting from packets transmitted form said calling terminal, a packet priority value for each packet during packet communication through the communication path and the communication channel determined in said connection processing means, the packet priority value being able to be attached to the packets transmitted from said calling terminal and being able to be varied;
- control priority value setting means for setting a control priority value concerning a communication priority of the communication packet on the basis of the call priority value set by said call priority setting means and the packet priority value extracted by said packet priority extracting means;
- and
- priority controlling means for controlling a transmission order and a discard order of communication information between said calling terminal and said called terminal on the basis of the control priority value set by said control priority value setting means.
Dependencies are inferred from the claim text.