JPH04287533A - Multilayer radio transmission method - Google Patents

Abstract

PURPOSE:To attain the common use of a communication protocol, to avoid the deterioration in the internal processing speed and increase in a communication buffer and to prevent the device for the method from being increased in size. CONSTITUTION:Layer codes N+2-N-2 identifying layers are set respectively to radio stations N+2-N-2 and the layer code is used to discriminate whether or not an opposite station is resident in a higher or a lower layer than that of its own station and when the layer of an opposite station is higher than the layer of its own station, the opposite station is used as a master station and its own station is used as a slave station to execute radio transmission and when the layer of an opposite station is lower than the layer of its own station, its own station is used as a master station and the opposite station is used as a slave station to execute radio transmission.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a multi-layer wireless transmission method having a plurality of wireless stations with a multi-layer structure, and in particular, a layer code is set for each wireless station to identify the layer, and a comparison of the layer codes is performed. The present invention relates to a multilayer wireless transmission method in which wireless transmission is performed as a station or a slave station.

0002

2. Description of the Related Art Conventionally, in a wireless transmission system having a plurality of wireless stations, the relationship between a master station and a slave station is uniquely determined in advance, and the structure has a plurality of hierarchical structures each consisting of a master station and slave stations. It had become. An identification code (ID), a group number, and a device number representing a parent-child relationship are set for a master station and a slave station, and wireless transmission is basically performed between the master station and slave stations.

That is, as shown in FIG. 4, the base unit 1A and the slave unit 1B are functionally set in a hierarchical relationship, and wireless transmission is performed based on this hierarchical relationship between the base unit 1A and the slave unit 1B. The hierarchical relationship between the base unit 1A and the slave unit 1B is uniquely set on the system, and wireless transmission beyond this hierarchical relationship is not possible.

0004

[Problems to be Solved by the Invention] However, in such conventional wireless transmission systems, the identification code (ID)
Since wireless communication is possible only with one input/output relationship between the master station and the slave station set by the group number and group number, it is currently applied only to the end of the system or to devices with one input/output. Met.

[0005] There is also an attempt to make all input and output of the system wireless, but in this case, multiple groups are set to which the master station and slave stations belong, and multiple communication protocols are set for each group. As a result, the equipment became larger, resulting in a decrease in internal processing speed and an increase in communication buffers, increasing the possibility of busy or down times, and causing problems such as the inherent ease of handling of wireless transmission being impaired. .

[0006] Therefore, the present invention was made by focusing on such conventional problems, and it enables commonality of communication protocols, does not cause a decrease in internal processing speed or an increase in communication buffers, and An object of the present invention is to provide a multilayer wireless transmission method that does not increase the size of the device.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a multilayer wireless transmission method having a plurality of wireless stations with a multilayer structure, in which a layer code for identifying the layer is set in each wireless station. , determines whether the other station is in a higher or lower hierarchy than the own station based on the layer code, and if the other station is in a higher hierarchy than the own station, wireless transmission is performed with the other station as the master station and the own station as the slave station. However, when the other station is in a lower hierarchy than the own station, wireless transmission is performed using the own station as the master station and the other station as the slave station.

[0008]

[Operation] Each wireless station is set with a layer code that identifies the layer, and during wireless transmission, by comparing the layer code of the other station and the layer code of the own station, whether the own station becomes the master station or not. It is determined whether the station becomes a slave station, and based on the result of this determination, a wireless transmission operation is executed. This eliminates the need for identification codes (IDs) that indicate parent-child relationships, enables the communication protocol to be shared, does not reduce internal processing speed or increase communication buffers, and facilitates integration between multiple wireless stations with multiple inputs and outputs. Wireless transmission becomes possible.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on the drawings.

FIG. 1 conceptually shows an embodiment of a wireless transmission system to which the multilayer wireless transmission method of the present invention is applied. In this embodiment, a plurality of wireless stations 2N+
2, 2N+1, 2N, 2N-1, 2N-2 are each divided into multiple layers, and each wireless station 2N+2, 2N+1, 2
Layer codes N+2, N+1, N, N-1, and N-2 are assigned to N, 2N-1, and 2N-2, respectively.

[0011] In such a configuration, when the wireless station 2N assigned the hierarchy code N performs wireless transmission, it operates as a master station or a slave station depending on the partner wireless station. for example,
Wireless stations 2N+2, 2N+1 to which wireless station 2N is assigned layer codes N+2, N+1 higher than its own layer code
In the case of wireless transmission, the wireless station 2N operates as a slave station, and the wireless station 2N operates as a slave station, and the wireless station 2N transmits data to wireless stations 2N-1 and 2N-, which are assigned layer codes N-1 and N-2 lower than the wireless station 2N's own layer code.
In the case of wireless transmission with No. 2, the wireless station 2N operates as a master station. That is, each wireless station is not distinguished as a master station or a slave station, and each wireless station becomes a slave station or a master station depending on the hierarchy code of the communication partner.

[0012] According to such a configuration, wireless transmission can be performed without being constrained by wired protocols as in conventional systems.

[0013] For example, it becomes possible to perform broadcast communication from a wireless station in a higher layer to all wireless stations in a lower layer, and also to perform emergency communication from a wireless station in a lower layer to all wireless stations in a higher layer. You can also do it. In addition, the wireless station 2N+ shown in FIG.
2 and wireless station 2N-1, between wireless station 2N and wireless station 2N-1.
Since communication that skips layers, such as with 2, is also possible, there is no time delay due to layer relay. Further, even if the upper station is busy or the system is down, communication is possible if the wireless station that actually communicates is capable of communicating.

Next, the operation of this embodiment will be explained in more detail.

FIG. 2 shows a wireless station 2 assigned a layer code N.
An example of received data received by N is shown. The reception data received by the wireless station 2N is as shown in FIG.
Consisting of synchronization bits, character information, flags, destination information, source information, and data, the destination information consists of the layer code N of the destination wireless station and equipment number "01," and the source information consists of the layer code N+2 of the source wireless station. , device number “03”. In this case, the source wireless station is the wireless station 2N+2 assigned the layer code N+2, and this wireless station 2N+2 is higher than the own wireless station 2N, so the own wireless station 2N operates as a slave station and Wireless station 2N+2 operates as a master station.

FIG. 3 is a flowchart showing this operation.

First, the source layer code included in the source information of the received data is read (step 101), and then it is checked whether this source layer code is larger than the local layer code (step 102). Here, if it is determined that the source layer code is larger than the local layer code, the local station operates as a slave station (step 103). If it is determined in step 102 that the source layer code is not larger than the local layer code, that is, it is smaller, the local station operates as a master station (step 104).

[0018] According to such a configuration, a device having multiple inputs and outputs can be made wireless by one wireless device.
This does not increase the size of the device, eliminates the need for multiple protocols, and suppresses a decrease in internal processing speed and an increase in communication buffers. Furthermore, in communication across layers, the delay time at the layer it passed through can be excluded. Moreover, communication is possible even if the layer being routed is busy or down, making simultaneous change orders and emergency communication possible, reducing system setup change time and improving safety.

[0019]

[Effects of the Invention] As explained above, according to the present invention,
A layer code that identifies the layer is set for each wireless station, and this layer code determines whether the other station is in a higher or lower layer than the own station.If the other station is in a higher layer than the own station, the other station is The configuration is configured so that the wireless transmission is performed using the own station as a station and the own station as a slave station, and when the other station is in a lower hierarchy than the own station, the own station is used as the master station and the other station is used as a slave station to perform wireless transmission. A device with multiple inputs and outputs can be made wireless with a single wireless device, without increasing the size of the device, eliminating the need for multiple protocols, suppressing a decrease in internal processing speed and an increase in communication buffers, and further, In communication across layers, the delay time in the layer it passed through can be excluded, and moreover,
Communication is possible even if the layer being routed is busy or down, making simultaneous change orders and emergency communications possible, which has the effect of shortening system setup change time and improving safety.

[Brief explanation of the drawing]

FIG. 1 is a diagram conceptually showing an embodiment of a wireless transmission system to which a multi-layer wireless transmission method of the present invention is applied.

FIG. 2 is a format diagram showing an example of received data received by a wireless station 2N assigned a layer code N in the embodiment shown in FIG.

FIG. 3 is a flowchart explaining the operation of the embodiment shown in FIG. 1;

FIG. 4 is a diagram conceptually showing a conventional wireless transmission system.

[Explanation of symbols]

1A Base unit 1B Handset 2N+2~2N-2 Wireless station

Claims (1)

[Claims] Claims: 1. A multi-layer wireless transmission method having a plurality of wireless stations with a multi-layer structure, in which each wireless station is set with a layer code that identifies the layer, and the layer code determines whether the other station is in a higher layer or a lower layer than the own station. If the other station is in a higher hierarchy than the own station, the other station becomes the master station, the own station becomes the slave station and wireless transmission is performed, and if the other station is in a lower hierarchy than the own station, the own station A multi-layer wireless transmission method characterized in that wireless transmission is performed using a terminal as a master station and a partner station as a slave station.