JPH0983471A - Communication channel division method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a high channel utilizing efficiency in response to requirements of a communication channel network by controlling a control channel number, an information channel number or a ratio of them for a radio information terminal equipment corresponding to plural communication channel networks. SOLUTION: When a radio terminal equipment 13 moves to a network 11, a radio base 12 selects a corresponding mode by a common control section 19 of a mode changeover device 14. A mode changeover section 18 sends communication channel configuration information of the corresponding mode from a mode memory 17 to the radio terminal equipment 13 by using the changeover common channel. The radio terminal equipment 13 receiving it commands storage of the received communication channel configuration information to be stored in the mode memory 17 to the mode changeover section 18. Thus, the radio terminal equipment controls the control channel number, the information channel number or the ratio of them in response to the requirements of the radio base station of the communication channel network to obtain a high channel utilizing efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication channel classification method suitable for a wireless communication network using portable wireless terminals connectable to both a specific wireless circuit network and a public circuit network.

[0002]

2. Description of the Related Art In recent years, a portable wireless terminal which is supposed to be used in a specific wireless network, can be used in another wireless network when the place of use changes, and The demand for portable wireless terminals is increasing.

Particularly in the field of mobile radio communication, attention is focused on a communication service in which a radio terminal which is supposed to be connected to a public telephone line is used by connecting it to a private line network of a company or an organization.

The types of channels possessed by the above-mentioned wireless communication device can be roughly classified into a control channel for transmitting control information and an information channel for use in information communication. The channels are transmitted in time division.

Regarding this, conventionally, in any wireless circuit network, there is only one kind of channel division method for the allocated frequency. For example, FIG. 6 is a diagram showing a conventional channel division method. In this way, the number of control channels and information channels is determined in one allocated frequency.

[0006]

By the way, there is a large difference in demand for traffic (communication information amount) between, for example, a public line network and a LAN (Local Area Network).

Generally, in a public line network, it is predicted that there will be only a few terminals connected within a zone (region) with a radius of several tens to hundreds of meters, and a channel design is carried out in accordance with this. on the other hand,
Assuming that the same communication device is connected by a LAN, the number of wireless terminals to be accommodated is several to several tens of times when converted into the scale of the public line network described above.

The frequency of use of the control channel may differ between the public line network and the LAN. For example, in a LAN, there is no call setup procedure, but data transmission is bursty. Therefore, channel utilization is improved by performing channel allocation according to the amount of information to be transmitted.
Therefore, in the LAN, channel allocation control is performed in short time units.

Therefore, generally, a LAN requires a large number of control channels. Conventionally, the number of control channels and information channels has been determined. Therefore, if the number of control channels is increased so as to be suitable for a LAN, the number of unnecessary control channels that are not used in the public line network increases and the frequency utilization efficiency decreases.

On the contrary, when the number of control channels is designed so as to be suitable for the public line network, the number of wireless terminals which can be connected by one base station becomes small when used in LAN. Therefore, it is necessary to increase the number of base stations in order to accommodate many wireless terminals.

Further, conventionally, even when one wireless communication device is connected to different communication line networks, the number of control channels and information channels is fixed, so that the channels cannot be effectively used.

The present invention has been made under such a background, and an object thereof is to provide a channel partitioning method which can obtain high channel utilization efficiency in accordance with the requirements of the communication network to be connected.

[0013]

In order to solve the above-mentioned problems, the invention according to claim 1 has a radio base station, and has a unique number within a frequency band assigned to the radio base station. A communication channel division method of a wireless information terminal connected to any of a plurality of communication networks having a control channel and a unique number of information channels, corresponding to each of the plurality of communication networks, An allocation system of the control channels and the information channels within the frequency band usable by the wireless information terminal is controlled to an allocation system of the control channels and the information channels unique to the communication network. And

Further, in the invention of claim 2, the wireless base station is connected to any one of a plurality of communication line networks for transmitting and receiving the unique number of control channels and the unique number of information channels in a time division manner. A communication channel division method of a wireless information terminal, wherein an allocation system of the control channels and the information channels usable by the wireless information terminal is provided in correspondence with each of the plurality of communication line networks, It is characterized in that the control system is controlled according to an allocation system of the control channel and the information channel unique to the communication network.

Further, in the invention according to claim 3, in the communication channel dividing method according to claim 1 or 2, the allocation system includes the unique number of the control channels and the information channels. It is characterized in that it is defined by the ratio with the proper number of.

Further, in the invention according to claim 4, in the communication channel dividing method according to claim 1 or 2, the allocation system includes the unique number of the control channels and the information channels. It is characterized by being defined by each of the unique numbers of.

Further, in the invention according to claim 5, in the communication channel dividing method according to claim 3 or 4, a part of the control channel of the unique number is a common channel, and The wireless base station transmits information indicating the allocation system unique to the communication network using the common channel, and the wireless information terminal controls the wireless information terminal based on the signal of the common channel. The allocation system of the channels and the information channels is controlled to the allocation system of the control channels and the information channels unique to the communication network.

Further, in the invention according to claim 6, in the communication channel division method according to claim 3 or 4, one of the unique number of control channels or the unique number of information channels is Part as a common channel, the wireless base station transmits information indicating the allocation system specific to the communication network using the common channel, and the wireless information terminal receives the wireless information based on the signal of the common channel. The allocation system of the control channels and the information channels usable by the terminal is controlled to the allocation system of the control channels and the information channels unique to the communication network.

Further, in the invention according to claim 7, in the communication channel division method according to claim 5 or 6, the allocation system is based on the signal of the common channel, and It is characterized in that it is defined by the allocation position of each of the control channel and the information channel.

Further, in the invention described in claim 8, in the communication channel dividing method according to any one of claims 1 to 7, the radio information terminal is configured to control the number of control channels and the number of information channels. It is characterized by having an operating means for arbitrarily operating and, and controlling the number of control channels and the number of information channels according to an instruction from the operating means.

[0021]

According to the present invention, the number of control channels and the number of information channels of the wireless information terminal, or the ratio or allocation form thereof, is controlled corresponding to each of the plurality of communication line networks.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a diagram for explaining the outline of the configuration of the present invention. As shown in the figure, in the present invention,
A wireless base station 12 is connected to each of the network (line network) 10 and the network 11, and the wireless terminal 13 connects a line to any of these.

Here, the user of the wireless terminal 13 moves from the service area (jurisdiction area) of the network 10 to the service area of the network 11, and accordingly, the wireless terminal 13 changes its channel configuration to each network 10, 11 is switched to communicate.

FIG. 2 is a schematic configuration diagram showing the configuration of the mode switching device 14 incorporated in the radio base station 12 and the radio terminal 13 shown in FIG.

The mode switching device 14 shown in FIG. 2 has a mode memory 16 and a mode memory 17. The mode memory 16 stores communication channel configuration information (that is, mode A) according to the requirements for connecting to the network 10. In addition, in the mode memory 17,
Communication channel configuration information (that is, mode B) according to a request condition for connecting to the network 11 is stored.

Reference numeral 18 denotes a mode switching unit, which selects either the mode A stored in the mode memory 16 or the mode B stored in the mode memory 17 according to an instruction from the common control unit 19. The communication channel configuration information selected by the mode switching unit 18 is input to the channel selection unit 21 included in the transceiver 20, and the channel corresponding to the communication of the control signal and the information signal is selected.

Here, although not shown, the radio base station 12
The common control unit 19 included in the mode switching device 14 built in the device has an operation unit that can be operated by the administrator of the radio base station 12 or the like, or a non-volatile memory. Thereby, the common control unit 19 selects either the mode A or the mode B according to the instruction from the operation unit in the former case and the content of the non-volatile memory in the latter case, and the radio base station 12 selects either one. Works in the mode.

On the other hand, although not shown in the drawing, the common control section 19 of the mode switching device 14 built in the wireless terminal 13 is also supplied from the operation section which can be operated by the user (user) or the transceiver 20. It has a mode discriminator that discriminates the mode based on the received signal. The selection of the mode of the wireless terminal 13 will be described later.

The communication channel division method of the present invention has several embodiments. These embodiments will be described below.

A. First Embodiment FIG. 3 is a diagram for explaining a communication channel division method according to the first embodiment of the present invention. In this embodiment, when the wireless terminal 13 is used in the service area of the network 10, the control channel and the information channel are set as mode A shown in FIG. Time division (TDMA: Time Div
ision Multiple Access). When used within the service area of one network 11, its control channel and information channel configuration are set to mode B shown in FIG. 3 (b).

As shown in FIGS. 3 (a) and 3 (b), in mode A and mode B, the ratio between the number of control channels and the number of information channels transmitted in time division at the allocated frequency is different. In the present embodiment, the wireless terminal 1
3 is connected to the public line network, the number of control channels is reduced and the number of information channels is increased as shown in FIG. On the other hand, when connecting to a LAN, the number of connectable terminals is increased by increasing the number of control channels as shown in FIG.

In this embodiment, the radio base station 12 is
As described above, the operation is performed in either the mode A or the mode B selected based on the instruction from the operation unit of the common control unit 19 or the content of the nonvolatile memory.

On the other hand, like the wireless base station 12, the wireless terminal 13 operates in any mode selected on the basis of the operation unit of the common control unit 19, and also the mode of the common control unit 19 as described above. It operates in the mode selected by the determination unit. This will be described below.

FIG. 4 is a diagram for explaining a communication channel division method having a common channel for notifying the configuration of the communication channel. In the channel division method shown in the figure, the common channel region is provided at the end of the control channel.
Therefore, the wireless base station 12 transmits a signal indicating the mode A or the mode B selected by the mode switching unit 18 using this common channel.

In the wireless terminal 13 that has received the above-mentioned common channel signal, the not-shown discriminating unit of the common control unit 19 determines the structure of the communication channel based on the common channel signal (that is, either mode A or mode B). And the mode switching unit 18 is instructed which mode to select.

As described above, according to the present embodiment, the ratio between the number of control channels and the number of information channels is set for each network. Therefore, the wireless terminal 13 can be connected to any of a plurality of networks having different communication channel configurations, such as a public line network and a LAN, by selecting a mode corresponding to the network to which the user or the like is to connect.

If the end of the control channel is used as a common channel and the radio base station 12 transmits the communication mode using this common channel, the common control unit 19 of the radio terminal 13 will use the common channel signal based on the common channel signal. It is possible to change to a communication mode compatible with the network. By doing so, even if the wireless terminal 13 moves to a service area of a different network, the user or the like can connect to a different network without performing a mode changing operation.

B. Second Embodiment FIG. 5 is a diagram explaining a communication channel division method according to a second embodiment of the present invention. Also in this embodiment, when the wireless terminal 13 is used in the service area of the network 10, the configuration of the control channel and the information channel is set to the mode A shown in FIG. When used in an area, its control channel and information channel configuration are set to mode B shown in FIG. 5 (b).

In the present embodiment, the ratio of the number of control channels and the number of information channels in the allocated frequency is the same regardless of the mode, but the number of control channels and the number of information channels in mode B are larger than those in mode A. .

That is, in this embodiment, for example, in a LAN in which a larger number of wireless terminals 13 are expected to be connected, mode B shown in FIG. 5B is used to increase the number of control channels and the number of information channels. This reduces call loss (connection error).

In this embodiment, the radio base station 12 is
The operation is performed in either mode A or mode B selected based on an instruction from an operation unit (not shown) included in the common control unit 19. On the other hand, similarly to the wireless base station 12, the wireless terminal 13 operates in any mode selected based on the operation unit included in the common control unit 19.

Therefore, the user of the wireless terminal 13 can connect the wireless terminal 13 to a different network such as a public line or a LAN by switching to the communication mode corresponding to the network each time the service area changes.

C. Third Embodiment In the above-described first and second embodiments, the allocation system of the control channels and the information channels is set before a predetermined time (in the case of FDMA described later, for example, a predetermined frequency). It has been defined that a control channel is assigned to (below) and an information channel is assigned after that time (above, above a predetermined frequency).

However, for example, in order of time,
A control channel, a control channel, an information channel, an information channel, a control channel, an information channel, etc. can be defined as a system in which either the control channel or the information channel is assigned to an arbitrary position.

Therefore, in the present embodiment, although not shown, in mode A, either a control channel or an information channel is assigned to each position corresponding to the network 10 in frequency or time. Further, in the mode B, either the control channel or the information channel is allocated to each position corresponding to the network 11 in terms of time.

Further, as described above, in the method having the common channel, the radio base station 12 uses the common channel,
Information is transmitted regarding the allocation position of each of the control channel and the information channel. The common control unit 19 of one wireless terminal 13 corresponds to the network based on the signal of the common channel. By doing so, the wireless terminal 13
Even if you move to a different network service area,
The user or the like can connect the wireless terminal 13 to the network.

In each of the above-described embodiments, the mode A or the mode B is selected according to the network, but the present invention may be configured to select three or more modes. Good.

Although the common channel is set at the end of the control channel in each of the embodiments, it may be set at the end of the information channel in addition to the common channel. Any area can be set as long as the area is fixed to the information channel.

In each of the above-described embodiments, an example in which the control channel and the information channel are transmitted by TDMA has been described, but in the first embodiment, for example, frequency division (FDMA: Frequency Division Multiple Acce) is used.
The communication mode of ss) (that is, the communication mode in which different communication frequencies are assigned to a plurality of channels) is also applicable.

[0050]

As described above, since the number of control channels and the number of information channels of the wireless information terminal are controlled corresponding to each of the plurality of communication line networks, or their ratio is controlled,
It is possible to obtain the effect that it is possible to realize a channel division method that can obtain high channel utilization efficiency according to the requirements of the communication network to be connected.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an outline of a configuration of the present invention.

FIG. 2 is a radio base station 12 and a radio terminal 1 shown in FIG.
3 is a schematic configuration diagram showing a configuration of a mode switching device 14 incorporated in the device 3. FIG.

FIG. 3 is a diagram illustrating a communication channel division method according to the first embodiment of the present invention.

FIG. 4 is a diagram illustrating a communication channel division method having a common channel for notifying the configuration of communication channels.

FIG. 5 is a diagram illustrating a communication channel division method according to a second embodiment of the present invention.

FIG. 6 is a diagram showing a conventional channel division method.

[Explanation of symbols]

 10 network 11 network 12 wireless base station 13 wireless terminal 14 mode switching device 16 mode memory 17 mode memory 18 mode switching unit 19 common control unit 20 transceiver 21 channel selection unit

Claims (8)

[Claims] 1. A wireless base station, which is connected to any one of a plurality of communication network having a specific number of control channels and a specific number of information channels within a frequency band assigned to the wireless base station. A communication channel classification method of a wireless information terminal, wherein an allocation system of the control channels and the information channels in the frequency band usable by the wireless information terminal is provided corresponding to each of the plurality of communication line networks. A method for allocating a communication channel, characterized by controlling the allocation system of the control channel and the information channel unique to the communication network. 2. A communication channel classification method of a wireless information terminal, which has a wireless base station and is connected to any one of a plurality of communication circuit networks for transmitting and receiving a unique number of control channels and a unique number of information channels in a time division manner. The assignment system of the control channels and the information channels usable by the wireless information terminal corresponding to each of the plurality of communication networks, the control channel unique to the communication network and the A communication channel classification method characterized by controlling an allocation system with an information channel. 3. The allocation system is defined by a ratio of the unique number of the control channels and the unique number of the information channels.
Alternatively, the communication channel division method according to claim 2. 4. The communication channel division according to claim 1, wherein the allocation system is defined by each of the unique number of the control channel and the unique number of the information channel. Method. 5. A part of the unique number of control channels is a common channel, the radio base station transmits information indicating the allocation system unique to the communication network using the common channel, and the radio information terminal. Based on the signal of the common channel, assigns the allocation system of the control channel and the information channel usable by the wireless information terminal to the allocation system of the control channel and the information channel unique to the communication network. 5. The communication channel classification method according to claim 3, wherein the communication channel classification method is controlled. 6. A part of the unique number of control channels or the unique number of information channels is used as a common channel, and the radio base station uses the common channel to provide information indicating the allocation system unique to the communication network. The wireless information terminal, based on the signal of the common channel, the allocation system of the control channel and the information channel that can be used by the wireless information terminal, the control channel unique to the communication network and the 5. The communication channel classification method according to claim 3, wherein the allocation system with the information channel is controlled. 7. The allocation system according to claim 5, wherein the allocation system is defined by allocation positions of the control channel and the information channel based on a signal of the common channel. Communication channel classification method described in. 8. The wireless information terminal has an operating means for arbitrarily operating the number of control channels and the number of information channels, and sets the number of control channels and the number of information channels according to an instruction from the operating means. The communication channel classification method according to any one of claims 1 to 7, characterized by controlling.