JP2001177872A - Wireless communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless communication system that executes an in-band negotiation procedure without causing any hindrance to a function of an application by indicating a relating between the application (high order level protocol) in a PIAFS procedure and a data link protocol selected by the in-band negotiation procedure so as to clearly depict the selection criterion. SOLUTION: A PIAFS control section has a means to set a type of an application using wireless communication to an in-band negotiation frame, and a mobile station or a terminal adaptor transmits an application type with the protocol type to an opposite party in the in-band negotiation procedure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication system.

In particular, a wireless base station wirelessly connected to a wired public line, and wirelessly connected to the wireless base station, capable of variably using a plurality of slots and performing wireless communication at a plurality of data communication speeds. The present invention relates to a wireless communication system configured with a wireless mobile station.

[0003]

2. Description of the Related Art With the development of wireless communication technology, a digital transmission system has become the mainstream from a conventional analog transmission system. In particular, in Japan, PHS (Personal
Since the start of the Handy Phone System), the use thereof has rapidly expanded, and the use of wireless communication has been active not only in voice communication but also in data communication.

[0004] The data communication system using the PHS network has been increasing as the number of Internet access requests increases.
(PHS Internet Access Forum) technical subcommittee started studying standardization. In March 1997, PIAFS (PHS In
Internet Access Forum Standard) As the first edition, OSI reference model layer 2 with a transmission speed of 32 Kbit / s
A transmission control procedure at (data link layer) has been proposed.

[0005] The PIAFS standard has been revised for the purpose of higher speed and higher function in accordance with the demand for higher speed of data communication. At present, the transmission speed is 64 Kbit / s.
Version 2.1 was proposed in January 1999. As a result, P having the PIAFS standard
The communication speed between the HS terminal and the terminal adapter terminal connected to the ISDN network is 32 Kbit / s or 64 Kbit / s.
Wireless high-speed data communication of Kbit / s has become possible.

Next, the PIAFS procedure specified in PIAFS Version 2.1 will be described in detail.

The PIAFS procedure is located between a physical layer including a radio transmission / reception unit and a modulation / demodulation unit, and a higher-level protocol layer which is a protocol for application applications such as facsimile communication and Internet communication. With the function of

[0008] The PIAFS procedure is roughly divided into an in-band negotiation procedure and an ARQ transmission control procedure.

[0009] The "in-band negotiation procedure"
In order to select a data link protocol, the wireless terminals perform negotiation before establishing a data link, and select one data link protocol from a plurality of data link protocols.

The "ARQ transmission control procedure" is an error control procedure in data transmission after the start of communication.

FIG. 5 is a diagram showing the positioning of in-band negotiation.

The data transmission protocol 501 and the real-time protocol 502 are data link protocols specified up to PIAFS version 2.1, and the future protocol 503 assumes a data link protocol specified in the future.

[0013] In-band negotiation part 504
When a wireless communication path is set by the physical layer 505,
Before the data link is established, negotiation with the partner wireless terminal is performed, and each data link protocol is selected.

FIG. 11 is a diagram showing protocol types set in frames exchanged during in-band negotiation shown in PIAFS version 2.1.

The data transmission protocol (fixed speed) is 3
2Kbit / s unlimited digital bearer and 64Kbit /
s unrestricted bearer; It is defined as a connection mode in which 460 speed matching is not performed.

The real-time protocol indicates a connection form indicated in the PIAFS real-time protocol specification technical document version 1.0.

The data transmission protocol (variable rate type 1) is connected by a 64 Kbit / s unrestricted digital bearer. 32Kbi with 460 speed matching
This is a connection mode in which a bit string of t / s may be transferred on a line. In some cases, the speed switching is performed from the local station side. I have.

The data transmission protocol (variable rate type 2) is connected by a 64 Kbit / s unrestricted digital bearer. 32Kbi with 460 speed matching
This is a connection mode in which a bit string of t / s may be transferred on a line, and the speed switching is not performed from the local station side, but is defined as an operation corresponding to the speed switching from the opposite station.

FIG. 3 is a diagram showing a sequence when a mobile station transmits a signal to a terminal adapter of a communication partner using a wireless channel of the PHS network.

The radio section interface of the PHS is AR
IB (Association of Radio Industries and Business
es) defines the standard as RCR-STD28. Outgoing connection processing based on this rule (from M301 to M
After 321), in-band negotiation of PIAFS is performed. The mobile station side becomes the data link activation side, and FIG.
Among the protocol types shown in FIG. 1, an available protocol is set in the negotiation request (M322) and sent to the terminal adapter of the opposite station.

FIG. 8 is a diagram showing a frame structure of the in-band negotiation.

The selected protocol type includes a first priority protocol 907 and a second priority protocol 9 according to the priority order.
08 are set in this order.

When the terminal adapter on the non-activation side of the data link receives the negotiation request (M322), if the protocol type is available with the requested priority from the set protocol type,
Only one of the protocols is selected, the selected protocol type is set in the negotiation reception (M323), and transmitted to the mobile station on the data link activation side.

FIG. 9 shows the protocol type when only the first priority is set in the negotiation request 1001 from the mobile station, the protocol that can be received by the partner terminal adapter that has been received, and the protocol selected by the negotiation reception 1002. FIG.

In the negotiation number N101, the negotiation request 1001 of the mobile station sets the fixed speed of 64K as the first priority. However, the fixed speed of 64K is also set as the protocol that can be supported by the terminal adapter. 64K as selection protocol
The fixed speed is set in the negotiation reception 1002.

In the negotiation number N103, the protocol of the mobile station is the negotiation number N1.
Same as 01, but the protocol supported by the terminal adapter is fixed at 64 speeds and variable at speeds.
In this case, the terminal adapter sets the fixed priority of 64 speed as the selection protocol in the negotiation reception 1002.

FIG. 10 shows a protocol type when a plurality of priorities are set in the negotiation request 1101 from the mobile station, a protocol that can be received by the partner terminal adapter received, and a protocol selected by the negotiation reception 1102. FIG.

In the negotiation number N111, in the negotiation request 1101 of the mobile station, the first priority is set to 64K speed fixed, the second priority is set to variable speed, and the third priority is set to 32K speed fixed. However, since the terminal adapter is set to 64K speed fixed as a compatible protocol,
A fixed 64K speed is set in the negotiation reception 1102 as a selection protocol.

With the negotiation number N113, the protocol of the mobile station is the same as the negotiation number N111, but the protocol that the terminal adapter can support is fixed at 64K and variable in speed. In this case, the terminal adapter negotiates a fixed priority of 64K speed as the selection protocol.
Set to 02.

[0030]

In the above prior art, P
Adopted IAFS version 2.1, transmission speed 32Kbit /
A procedure for selecting one data link protocol from a plurality of data link protocols by in-band negotiation when performing wireless high-speed data communication of s or 64 bit / s is shown.

However, the relationship between an application (high-level protocol) for starting the PIAFS procedure and a data link protocol selected by the in-band negotiation procedure is not shown, and a plurality of application applications are installed in the mobile station. In such a case, there is a problem that the standard for selecting the data link protocol is not clear, so that the data link protocol desired by the application cannot be selected, which may hinder the function of the application.

The present invention solves the above-mentioned problems in the prior art, and shows a relationship between an application (high-level protocol) in a PIAFS procedure and a data link protocol selected by an in-band negotiation procedure. The purpose of this is to clarify the selection criteria and perform the in-band negotiation procedure so as not to hinder the function of the application.

[0033]

According to the first aspect of the present invention,
The PIAFS control unit has means for setting the type of the application using wireless communication in the in-band negotiation frame, and the mobile station or the terminal adapter transmits the application type together with the protocol type to the other party in the in-band negotiation procedure. Things.

According to a fourth aspect of the present invention, in the memory of the mobile station, a priority protocol table for each application that defines a protocol to be used in the in-band negotiation procedure and its priority for each application used by the mobile station in wireless communication. The PIAFS control unit has means for setting the type of application using wireless communication in the in-band negotiation frame, and the mobile station or the terminal adapter performs the in-band negotiation procedure on the data link non-activation side. At a certain time, the protocol type is determined from the application type set in the in-band negotiation frame by referring to the priority protocol table for each application, and transmitted to the data link initiator together with the application type. .

[0035]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment FIG. 1 shows a radio communication system RS1 according to one embodiment of the present invention.
FIG. 3 is a diagram showing the configuration of FIG.

From the aspect of radio communication management, the radio communication system RS1 is a base station (CS = Cell Statio) that manages and controls communication of mobile stations accommodated in the radio system.
n) and a mobile station (PS = Personal Station) connected to the base station via a wireless line and managed by wireless communication, and uses one or a plurality of predetermined frequencies, Stations and mobile stations, or mobile stations perform wireless communication.

In the radio communication system RS1, an analog telephone subscriber network, ISDN (Integrated Service Digital
public network (PN) 106 such as twork) network
A base station 104 connected to the mobile station 101 in the wireless system through a wireless line to provide a public network communication service, a terminal adapter 108 also connected to the public network 101 via a telephone line 107, Base station 104 and terminal adapter 1 via public network 106
08 exchanges voice or data with the public network 106.
Mobile station 101 that performs voice communication or data communication through
It is composed of The mobile station 101 has a connection cable 1
02 is connected to the data terminal 103.

Next, the configuration and operation of the mobile station 101 will be described.

FIG. 2 is a diagram showing a main internal configuration of the mobile station 101 shown in FIG.

The mobile station control section 201 controls each block of the mobile station 101 and is constituted by a CPU. The memory 202 is a ROM for storing programs.
And SRA for storing temporary variables and data of programs
M and EE for storing non-volatile data such as operation data
It is composed of a PROM and has a priority protocol table for each application shown in FIG. Mobile station antenna 20
Numeral 3 is for transmitting and receiving wireless signals. The wireless transmission / reception unit 204 includes an RF unit including a synthesizer unit, a transmission unit and a reception unit, a modulation / demodulation unit, and a channel codec unit. The PIAFS control unit 205 performs processing such as data link setting and release, error detection / retransmission, flow control, message division and assembly based on PIAFS version 2.1. The terminal interface processing unit 206 provides an interface with the data terminal 103.

In the wireless communication system of the present application, the mobile station 101 is connected to the terminal adapter 10 via the public network 106.
8 until the data link is established will be described with reference to FIG.

When the data terminal 103 performs a calling operation, the terminal interface processing unit 206 sends a signal to the mobile station control unit 201.
, A call request message arrives, and the mobile station control unit 201
Outgoing connection processing defined in RCR-STD28 (M30
1 to M321). When the response (M304) is transmitted from the terminal adapter 108 and the CC response (M321) reaches the mobile station 101, the connection of the wireless line is completed. After that, the PIAFS control unit 205 performs in-band negotiation of PIAFS and establishes a data link. The mobile station 101 becomes the data link initiator, and FIG.
Select an available protocol and an application type that uses wireless communication from among the protocol types shown in
The request is set to a negotiation request (M322) and sent to the terminal adapter 106 of the opposite station.

FIG. 7 is a diagram showing a frame structure of the in-band negotiation of the present invention.

The selected protocol type is stored in accordance with the priority order, such as the first priority protocol 707 and the second priority protocol 708, and is sent to the terminal adapter 106 of the opposite station. The number of stored protocols is not particularly limited, and depends on the control processing method of the mobile station control unit 201. The application type is stored in the same manner as the application type 711 and sent to the terminal adapter 106 of the game. Examples of application types are shown in 601 to 604 in FIG.

FIG. 6 is a diagram showing an example in which the position of the in-band negotiation of FIG. 5 is further combined with an example of the application type.

Reference numerals 601 to 604 denote each application and correspond to a higher-level protocol of in-band negotiation. A data transmission protocol (fixed speed, variable speed) 605 and a real-time protocol 606 are selected for each application.

The application type stored in the application type 711 is such that when the mobile station 101 is on the data link activation side and selects a usable protocol from among the protocol types shown in FIG. 11, the Internet browsing shown in FIG. The upper layer protocol such as the 601 or the still image communication 602 notifies the in-band negotiation part that it has been started, or sets it as an application type in the memory 202, so that the PIAFS control unit 205 sends the negotiation request. (M322) and send it to the terminal adapter 106 of the game.

In the terminal adapter 108 on the non-activation side of the data link, a negotiation request (M32
2), upon receiving the received negotiation request (M
Using the application type 711 of the parameter 322) as a key, a priority table for each application shown in FIG. 4 stored in the memory 202 is searched, and one usable protocol is selected.

FIG. 4 is a diagram showing an example of the priority protocol table for each application that defines the correspondence between the application and the priority protocol.

In this table, the priority protocol is indicated up to the third priority for each application.
Since only one protocol type is set in the negotiation reception (M323), normally only the first priority protocol is selected.

However, depending on the situation, the second and third priority protocols may be selected. When the application type stored in the application type 711 of the negotiation request (M322) is Internet browsing, the first priority protocol fixed at 64 is selected as the protocol type, the negotiation is accepted (M323), and the data link is activated. To the mobile station 101 on the side.

In the priority protocol table for each application shown in FIG. 4, taking Internet browsing as an example, the first priority protocol is fixed at 64 speeds, the second priority protocol is variable speed, and the third priority protocol is fixed at 32K speed. . The reason why the first priority protocol is fixed at 64K speed is that Internet browsing has a feature of transmitting a large amount of data, and has a feature that the amount of data changes little during browsing. This is because fixed-capacity transmission is suitable.

Variable speed was selected as the second priority protocol. With variable speed, a stable communication speed of 64K can be obtained when communication traffic is small,
As traffic increases, the speed drops to 32K. If the speed is reduced to 32K during browsing, data download is slowed down, and the speed of screen display is slowed down. As described above, in each application such as E-mail, still image communication, and TV telephone, a protocol based on the characteristics of the communication is set.

In FIGS. 9 and 10, the terminal adapter 108 selects the protocol type of the negotiation request 1001/1101 of the mobile station 101 and the usable protocol selected from the priority protocol table for each application. And the protocol type set in the negotiation reception 1002/1102.

FIG. 9 is a diagram showing a selection protocol when only the first priority protocol is set in the negotiation request 1001 from the mobile station 101.

In N101, the negotiation request 10 of the mobile station 101 which has started Internet browsing
01, Internet browsing for the application type 711 and 64 as the first priority protocol 707
Although the fixed K speed is set, the terminal adapter 108 also sets the fixed 64K speed as a protocol that can be handled from the priority table for each application, so the fixed fixed 64K speed is set to the negotiation reception 1002 as the selected protocol. You have set.
In N102, the first priority protocol of the mobile station 101 is:
Same as N101, but application type 711
In the case where the still image communication is set, the first priority protocol that can be supported by the terminal adapter 108 is variable from the priority protocol table for each application. In this case, since the terminal adapter 108 does not match the first priority protocol of the mobile station 101 and the communication becomes impossible, the terminal adapter 108 transmits a negotiation rejection to the mobile station 101 and terminates the negotiation.

However, on the other hand, since the second priority protocol of the still image communication is fixed at 64K speed, depending on the conditions, the second priority protocol is selected, and the same as N101, the selected protocol is used, and the fixed 64K negotiation is negotiated. It may be set in the reception 1002.

As conditions, the radio communication environment of the mobile station 101 and the like can be considered. In places where there is a lot of communication traffic,
A fixed speed of 64K occupying two slots is difficult to connect, and causes problems such as an increase in the call blocking rate of other mobile stations.
For this reason, in still image communication with a change in traffic, variable speed is used as the first priority protocol. However, if the negotiation refusal should not be issued in consideration of the above environmental conditions, the fixed value of 64K is negotiated. Reception 10
Set to 02.

In N103, as in N101, the mobile station 10
The application type 711 of the negotiation request 1001 is Internet browsing, and the first priority protocol is fixed at 64K speed. However, in the terminal adapter 108, the protocol supported from the priority table for each application is fixed at 64K and variable speed.
2K fixed. In this case, the terminal adapter 108 selects 64K with a high priority as a selection protocol.
The fixed speed is set in the negotiation reception 1002.

In N104 to N106, the mobile station 101
Has a variable speed set as the first priority, and the terminal adapter 108 is the same as N101 to N103. The selection protocol at that time is rejection of negotiation, variable speed, and variable speed.

FIG. 10 is a diagram showing a selection protocol when the first priority protocol, the second priority protocol, and the third priority protocol are set in the negotiation request 1101 from the mobile station 101.

In N111, negotiation request 11 of mobile station 101 which has started Internet browsing is performed.
01, Internet browsing for the application type 711 and 64 as the first priority protocol 707
Fixed speed, variable speed as second priority protocol 708,
Although the fixed 32K speed is set as the third priority, the terminal adapter 108 also sets the fixed 64K speed as a protocol that can be supported from the priority table for each application, so that the fixed 64K speed is negotiated as the selected protocol. Reception 1102
Is set to

In N112, each priority protocol of the mobile station 101 is the same as that in N111. However, when still image communication is set in the application type 711, the correspondence of the terminal adapter 108 is determined from the priority protocol table for each application. The possible first priority protocol is variable speed, and the second priority protocol is fixed at 64K speed. In this case, the terminal adapter 108 does not match the fixed speed 64K of the first priority protocol of the mobile station 101, but selects the variable speed of the second priority protocol,
Transmit to the mobile station 101.

However, on the other hand, the second priority protocol of the still picture communication is fixed at 64K, so that the second priority protocol is selected depending on the conditions, and the fixed 64K speed negotiation is negotiated as the selected protocol similarly to N111. It may be set in the reception 1102. As conditions, the wireless communication environment of the mobile station 101 can be considered. In a place where the communication traffic amount is large, the 64K fixed communication that occupies 2 slots is difficult to connect, and the call loss rate of others increases. I do. Therefore, in still image communication with a small amount of communication, variable speed is good.

In N113, similarly to N111, the application type 711 of the negotiation request 1101 of the mobile station 101 is Internet browsing,
The priority protocol is fixed at 64K speed, the second priority protocol is variable speed, and the third priority protocol is fixed at 32K speed. In the terminal adapter 108, the protocol that can be supported from the priority table for each application is the first priority fixed at 64 speed. , Second priority is variable speed, third priority is 3
The 2K speed is fixed.

In this case, the terminal adapter 108 sets the fixed priority of 64K speed as the selection protocol in the negotiation reception 1102. If the application type 711 of the negotiation request 1101 is still image communication, the protocol that can be supported from the priority table for each application is variable speed for the first priority, fixed at 64K speed for the second priority, and fixed at 32K speed for the third priority. It has become. In this case, the terminal adapter 10
8, negotiation request 1 is selected as the selection protocol.
The variable speed of the second priority protocol 101 is set in the negotiation reception 1102.

In N114 to N116, the negotiation request 1101 of the mobile station 101 which has set the still image communication to the application type 707 includes the variable speed as the first priority protocol, the fixed 64K speed as the second priority, and the fixed 32K speed as the third priority. A national state is set, and the terminal adapter 108 is the same as N111 to N113. At this time, the selection protocol is fixed at 64 speeds, variable speed, and variable speed.

In the above, the terminal on which the data link is not activated is the terminal adapter 108. However, it is apparent that the same applies when the non-activation side is the mobile station 101. Mobile station 1
There is no change in the form of connection between 01s.

[Second Embodiment] When the mobile station 101 is on the data link start side and selects an available protocol from among the protocol types shown in FIG. Based on the higher layer consistency, determine the application
2 is set as the application type, and a priority protocol is selected from the priority table for each application also stored in the memory 202 by using the application type set in the memory 202 as a key, and is set in a negotiation request (M322). To the terminal adapter 106.

For example, in the RCR-STD 28, main application applications are defined as the user information layer 3 protocol of the lower layer compatibility information element and the high layer characteristic identification or the extended high layer characteristic identification of the high layer compatibility information element. Then, it is determined from these identifiers and set in the memory 202.

[Third Embodiment] When the negotiation request (M322) is received by the terminal adapter 108 on the non-activation side of the data link, the terminal adapter 108 stores the memory using the application type 711 of the parameter of the received negotiation request (M322) as a key. The application-specific priority table shown in FIG. 4 stored in 202 is searched and one usable protocol is selected. Normally, the first priority protocol in the priority table for each application is selected in accordance with the selection conditions of the receiving side. However, depending on the situation, the first priority protocol is compared with each priority protocol parameter of the negotiation request (M322), and the second and third priority protocols are selected. In some cases, a protocol is selected.

[0072]

According to the present invention, there is provided means for setting the type of an application using wireless communication in an in-band negotiation frame, and the mobile station or the terminal adapter performs the application type together with the protocol type in the in-band negotiation procedure. To the other party, and in the memory of the mobile station and the terminal adapter, for each application used by the mobile station in wireless communication, the application-specific priority protocol table that defines the protocol used in the in-band negotiation procedure and its priority. In the in-band negotiation procedure, when notifying the other party of the protocol to be used, it is determined by referring to the priority protocol table for each application. Was clear, select a data link protocol APPLICATIONS desires, an effect that can be optimized to function APPLICATIONS.

[Brief description of the drawings]

FIG. 1 shows a wireless communication system RS according to an embodiment of the present invention.
1 is a diagram showing a configuration of FIG.

FIG. 2 is a diagram showing a main internal configuration of the mobile station 101 shown in FIG.

FIG. 3 is a diagram showing a sequence when a mobile station transmits a call to a terminal adapter of a communication partner using a wireless channel of a PHS network.

FIG. 4 is a diagram illustrating an example of a priority protocol table for each application that defines correspondence between an application and a priority protocol.

FIG. 5 is a diagram illustrating positioning of in-band negotiation.

6 is a diagram showing an example in which an example of an application type is further combined with the position of in-band negotiation in FIG. 5;

FIG. 7 is a diagram illustrating a frame structure of in-band negotiation according to the present invention.

FIG. 8 is a diagram illustrating a frame structure of in-band negotiation.

FIG. 9 shows a negotiation request 10 from the mobile station 101.
FIG. 11 illustrates a selected protocol when only a first priority protocol is set.

FIG. 10 shows a negotiation request 1 from the mobile station 101.
FIG. 10 illustrates a selection protocol when a first priority protocol, a second priority protocol, and a third priority protocol are set in 101.

FIG. 11 is a diagram showing a protocol type set in a frame exchanged at the time of in-band negotiation shown in PIAFS Version 2.1.

[Explanation of symbols]

 RS1: wireless communication system, 101: mobile station, 102: connection cable, 103: data terminal, 104: base station, 105, 107: telephone line, 106: public network such as network, 108: terminal adapter, 201: mobile station Control unit, 202: memory, 205: PIAFS control unit, 206: terminal interface processing unit.

Claims (5)

[Claims] 1. A wireless communication system having a base station connected to a public network and a mobile station performing voice communication or data communication using wireless communication with the base station, wherein the mobile station has a slot for wireless communication. Using a variable number of
A wireless transmission / reception unit capable of handling the communication speed variably, a PIAFS control unit for performing communication by putting data transmitted / received by the wireless transmission / reception unit in a PIAFS procedure, a memory for storing data such as operating conditions of the mobile station, A mobile station control unit that controls a user interface and I / O of the station; and a terminal interface processing unit that provides a connection interface with an external data terminal. The PIAFS control unit is configured to control an application using wireless communication. A wireless communication system having means for setting a type in an in-band negotiation frame, wherein the mobile station transmits an application type together with a protocol type to a partner in an in-band negotiation procedure. 2. The wireless communication system according to claim 1, wherein the mobile station, in the in-band negotiation procedure, transmits an application type to an opposite party that is notified or set by an upper layer protocol. system. 3. The application set according to claim 1, wherein the type of application transmitted by the mobile station to the other party in the in-band negotiation procedure is determined based on low layer compatibility or high layer compatibility of the call setup message. A wireless communication system characterized by a type. 4. A wireless communication system having a base station connected to a public network and a mobile station performing voice communication or data communication using wireless communication with the base station, wherein the mobile station has a slot for wireless communication. Using a variable number of
A wireless transmission / reception unit capable of handling the communication speed variably, a PIAFS control unit for performing communication by putting data transmitted / received by the wireless transmission / reception unit in a PIAFS procedure, a memory for storing data such as operating conditions of a mobile station, A mobile station control unit for controlling the user interface and I / O of the station; and a terminal interface processing unit for providing a connection interface with an external data terminal. For each application to be performed, a priority protocol table for each application that defines a protocol to be used in the in-band negotiation procedure and its priority is stored. The PIAFS control unit sets the type of the application that uses wireless communication in the in-band negotiation frame. The mobile station comprises an In the negotiation procedure, when it is the data link non-activation side, based on the application type set in the in-band negotiation frame, refer to the above-mentioned priority protocol table for each application, determine the protocol type, and activate the data link together with the application type. A wireless communication system for transmitting data to a communication side. 5. The mobile station according to claim 4, wherein in the in-band negotiation procedure, when the mobile station is on the data link non-activation side, the application-based priority is set based on an application type set in an in-band negotiation frame. A wireless communication system characterized by referring to a protocol table, selecting a protocol type, comparing the selected protocol type with a priority protocol type transmitted from a data link initiator, and transmitting the selected protocol type together with an application type to the data link initiator.