JPS63209246A - Receiving buffer assigning system - Google Patents

Abstract

PURPOSE:To prevent the influence of a convergence to the inclination of a traffic between data having different high order layer control by classifying plural links into two groups or above and providing a data receiving buffer for a line control device and for a group in a processing device. CONSTITUTION:Receiving buffers 311, 312, 3n1 and 3n2 in a processing device are assigned to a line control device unit and a service access point unit. Thus, by assigning the receiving buffers 311, 312, 3n1 and 3n2 in the processing device to the line control device unit and the service access point unit, line control devices 11,..., 1n use the assigned receiving buffer, and therefore, the receiving buffer hunting competition with other line control device does not occur. Since the receiving buffer is assigned to a service access point unit, the straddle of different high order layer control parts 41 and 4n at the time of reading the data in the receiving buffer is not needed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a reception buffer allocation management method within a processing device for transferring and storing data received from a line, and in particular,
Receiver path suitable for N subscriber line exchange.

Concerning sofa allocation method.

[Conventional technology]

The 15DN subscriber line exchange is shown in FIG.

, of the interface of multiple subscriber lines (11~!-).

Line control devices 11 to 17L and I that perform link control processing
.

A processing device that performs interface upper layer control.

A configuration consisting of 20 is generally known. Incidentally, related exchanges of this type include, for example.

1985 IEICE General Conference, Proceedings, ll
llm1959 [l5DN Signal processing in subscriber line exchange.

A study on the configuration of embedded equipment.''

Problems that invention C attempts to solve] In the 15DN switch having the configuration shown in FIG.

Line control device 11-1? When L receives the FCM 1 signal from the subscriber line, it performs link control and transfers the upper layer signal in the information field of the frame to the reception buffer 30 in the processing device 20 that performs upper layer control. Need to hunt buffers. When the receiving buffer 30 in the processing device 20 is shared by the system, a plurality of line control devices 11--

1? There is a problem where receive buffer hunt contention occurs between L.

there were. There is also a service access point (SA).

P), 5AP=0 is the call control signal, 5AP=16 is the call control signal.

It is assigned to the Bakuto signal and has a value of 5 APQ.

Therefore, the upper layer control in the processing device is different.

Signal distribution is processed for each NAPIS access point.

The problem was that it became complicated. Also, between SAPs.

The spread of radiance due to Rahikuku's bias expands.

There was a problem. 1゜An object of the present invention is reception between a plurality of line control devices.

Prevents buffer hunt contention and nerfs layer 6 signals.

A buffer that facilitates the distribution of service access types.

The objective is to provide an allocation method.

[Means for Solving the Problems] 1. The above object is achieved by allocating a reception buffer in the processing device to each line control device and each service access point.

[Effect]

By allocating the reception buffer in the processing device to each line control device and each service access point, the line control device can use the allocated reception buffer.

Since a sofa is used, it can be connected to other line control devices.

No communication buffer hunt contention occurs. Also, sir.

When reading data in the receive buffer, since the receive buffer is allocated to each access point.

There is no need to assign different upper layer control units to each other.

becomes.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1st
The figure shows l5DN user/network interface.

n number of line control devices that control the link procedures of the network.

The 15DN consists of a processing device that performs upper layer processing.

A receiving buffer line in the processing unit of an exchange.

The reception buffer allocation is shown in the case where there are two service access points for each control device, Si3 AP==0, and 5AP=16. 11-1? L is a line control device that accommodates a plurality of l5DN user/network interface circuits and performs link procedure control, 20 is a processing device that performs upper layer processing, and 511 to 3? L1 is a line control device 11,6.

~1n's 5AP = 0 receiving pants akiny, 312°~3? L2 is a receiver for 5AP=16 of line control devices 11 to 19.

a receive buffer queue, and a receive buffer queue for each receive buffer queue.

consists of multiple receive buffers. 41 is SAP
.

=0 upper layer processing unit, 42 is the upper layer of 5AP=16.

This is a layer processing section. Upper layer processing unit of SAP=O.

41 is the reception buffer for SAP=o 311~
5? L1's.

Queue control is performed as follows.

Traffic of SAP=o signal for each line control device 11 to 17L.

The number of buffers commensurate with the number of buffers for SAP = O is 1. .

Fakie 311-3? Number of buffers for each of L1
.

(Key≧−Length), and each line control device 11-.

1? In L, the start address of the receive buffer and the receive buffer.

Notify the child number and SAP type. Receive buffer number.

There is a Kinney length in the issue, and it is patrolled and controlled. Line side.

Control device 11-1? L writes the information field of the receive buffer KI frame in order of reception of ■frames with SAP = o, starting from the lowest receive buffer number, and writes the line number, link number, receive buffer number, and field for each commitment to the receive buffer. Determine the byte length of 4.

The embedded device 20 is notified of the status. 5AP=O top.

The layer processing unit 41 receives the status notification.

Read the contents of the receive buffer with the receive buffer number.

and process the upper layer signals of the corresponding link.

Then, re-open the receive buffer and control the appropriate line.

Notify the device with a command. 5 AP = 16 upper rays.

The reception processing unit 42 has a reception buffer for 5AP=16.
.

312~Total of 2 queue control, 5AP=o upper layer.

The procedure is similar to that of the color processing section 41. Line control device.

11-1? L is in the order of reception of one frame with 5AP=16.

5 Write the E-frame information field to the receive buffer in order from the lowest receive buffer number for AP=16.

The line number, link number, reception buffer number, and field byte length are notified to the processing device 20 as a status each time the reception buffer is written. Upon receiving the status notification, the upper layer processing unit 42 of 5AP15=16 reads the contents of the receive buffer of the corresponding receive buffer number, processes the upper layer signal of the corresponding 9 links, and re-writes the receive buffer of the corresponding line. Notify the control device with a command. The upper layer processing of 8AP=o and the upper layer processing of 5AP=16 are executed alternately at a fixed period (for example, 16 nsS), and the processing stays.

The receiving bar corresponding to the line control device that received the task notification.

Read the contents of the sofa and process the upper layer signals.

It can also perform reception between line control devices.

There is no buffer hunt conflict.

〔Effect of the invention〕

According to the present invention, it is possible to prevent a receive buffer and a match between line control devices, and to improve upper layer control.

Because the received data can be categorized by different types of data.

Contention control becomes easier and upper layer control is different.

This has the effect of preventing the influence of congestion on traffic bias between data.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing reception buffer allocation in an 15DN exchange according to an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional example. 11-1n... line control device, 20... processing device,
30... Receive buffer akini, 311-691...
Line control device F11-1? L's 5APO reception rose Akinyi, 312
Buff Akinyi, 11-1m...Line, 41...S
A P =. 0 upper layer processing unit, 42...8 AP=16 upper layer. Layer processing section.

Claims (1)

[Scope of Claims] 1. In a communication system that accommodates one or more lines and includes a plurality of line control devices that perform procedural control of a plurality of links set on the line, and a processing device that processes upper layers. . A reception buffer allocation method, characterized in that the plurality of links are classified into two or more groups, and a data reception buffer is provided in a processing device for each of the line control devices and for each group. 2. The reception buffer allocation method according to claim 1, wherein the group classification is performed based on the value of an address field within a frame.