JPH09214584A - Communication control system between communication units - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication control system by which the efficiency of a data processing by means of respective modules is improved. SOLUTION: A management module 2 is provided. Function modules 11 -1N generate transactions for the function modules to which the processing is to be requested next when the self processing is completed, registering them to a common transaction queue to transfer control right to the management module 2. Then, the management module 2 transfers necessary data to the other function module described in the transaction registered in the transaction queue when control right is obtained, and transfers control right to the function module.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication control system for controlling data transfer between communication devices.

[0002]

2. Description of the Related Art Data transfer between communication devices is performed according to a communication protocol determined by each other, and the communication protocol is determined by a hierarchical structure as shown in FIG.

When the communication protocol having such a hierarchical structure is realized by software, a module for realizing the function of each layer is individually created, and data is transferred between the modules for communication.

For example, when the device is activated, the internal software enters a state in which the control right is sequentially transferred to each module as shown in FIG. 4, and each module should process when it has the control right. The presence or absence of data is checked, if there is data, the processing is performed, and if there is no data, the control right is transferred to the next module.

[0005]

According to the conventional communication control method, even if there is no input / output data, the procedure is such that each module is always activated cyclically. Data processing is not executed until the module moves to that module, resulting in poor communication efficiency.

Further, even if the next module to be requested for processing is a module which is sequentially separated, it is impossible to directly transfer control to the target module, and it is necessary to always go through a module in between. , Worsens communication efficiency.

As the number of modules to be mounted increases, the influence of these increases and the communication speed decreases.

An object of the present invention is to provide a communication control system which improves the efficiency of data processing by each module.

[0009]

According to the present invention, in order to control data transfer between communication devices, the function of each layer of a communication protocol having a hierarchical structure is individually created as a function module of software configuration, and data is transferred between the function modules. In delivering and performing communication processing, a management module is provided, and when the processing of its own is completed, the functional module creates a transaction for the functional module to request the next processing and registers it in a common transaction queue. To transfer the control right to the management module, and when the control module obtains the control right, the management module passes the necessary data to another function module described in the transaction registered in the transaction queue to transfer the control right to the function. It is characterized by being transferred to a module.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a module configuration showing an embodiment of the present invention, in which a management module 2 for controlling the flow of processing between the functional modules 1 ₁ to 1 _N is provided.

In this configuration, the functional modules 1 ₁ ...
1 _N performs processing corresponding to the occurrence of an event such as arrival of input data, then creates a transaction for the functional module to be requested for the next processing, and stores this in the transaction queue common to all functional modules. Register and transfer control to management module 2.

The transaction has at least the structure shown in FIG. 2, and includes the number of the partner module to be requested for processing next, the number of the self module, the code indicating the processing content to be requested, and the data to be processed. The pointer to the buffer to be stored is described. Depending on the processing content, multiple transactions will be issued. Also,
The transaction queue is the transaction FIF.
It is composed of O structure, and the transaction registered first is taken out first.

The management module 2 refers to the transaction queue, and if the transaction is registered,
The necessary data is passed to the module corresponding to the partner module number described therein, and the control right is transferred to the module. At this time, the processed transaction is deleted.

The module activated by the management module 2 performs the same processing as the above, assuming that an event has occurred due to the transfer of the control right, and transfers the control right to the management module 2 when the processing is completed.

When there is no transaction to be processed, that is, when the queue is empty, only the management module 2 always refers to the transaction queue and waits for the occurrence of the next event.

As described above, each of the modules 1 ₁ to 1 _N creates and queues a transaction for the module requesting the processing and transfers the control right to the management module 2. The management module 2 is registered in the transaction queue. In order of the transaction to be performed, the necessary data is passed to the other module and the control right is transferred.
The management module 2 manages communication processing using transactions.

As a result, the transfer of the control right is based on the transaction created by each module and the order in which the transactions are created. Even in the case of the modules which are separated in order, the direct transfer of the control right between the arbitrary modules can be obtained. Increase the efficiency of communication processing.

In the embodiment, the transaction queue shows the case where the transfer of the control right is performed in the order of the FIFO. However, by giving priority to the transaction, a more efficient processing procedure can be obtained. it can.

[0019]

As described above, according to the present invention, since the management module manages the processing procedure by each functional module, the control loss is reduced, the communication efficiency is improved, and the transmission speed is eventually increased. Can be fast.

[Brief description of drawings]

FIG. 1 is a module configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration example of a transaction in the embodiment.

FIG. 3 is an example of a hierarchical structure of a communication protocol.

FIG. 4 shows a flow of control right of each conventional module.

[Explanation of symbols]

1 ₁ , 1 _N ... Function module 2 ... Management module

Claims (1)

[Claims] 1. In order to control data transfer between communication devices, the function of each layer of a communication protocol having a hierarchical structure is individually created as a function module of software configuration, and data is transferred between the function modules to perform communication processing. , A management module is provided, and the function module creates a transaction for a function module to be requested to process next when its own processing is completed and registers it in a common transaction queue to give control right to the management module. The management module transfers the control right to the relevant functional module by passing necessary data to other functional modules described in the transaction registered in the transaction queue when the control right is obtained. Communication control method between communication devices.