KR100291474B1 - Method for automatically setting link in accordance with registration mode in ct-2 - Google Patents

Abstract

PURPOSE: A method for automatically setting up a link according to a registered mode in an advanced digital wireless telephone is provided to automatically attempt and set up links for all the registered slots sequentially, irrespective of base station modes. CONSTITUTION: A control part attempts a link to a slot of the first base station mode(301). If the link is successful, the control part sets up the link to the slot(303). In case that the link is failed, however, the control part checks whether another registered slot of the first base station mode exists(305). In case that another slot is registered, the control part changes the failed slot with another registered slot(306) and attempts a link to the registered slot(307). The control part checks whether links are attempted for all the registered slots of the first base station mode. In case that the link attempts for all the registered slots of the first base station mode are completed, the control part checks whether a registered slot of the second base station mode exists(309). If a registered slot exists, the control part attempts a link to the registered slot(311).

Description

Automatic link setting method according to registration mode in next-generation digital cordless telephones {METHOD FOR AUTOMATICALLY SETTING LINK IN ACCORDANCE WITH REGISTRATION MODE IN CT-2}

The present invention relates to a method for establishing a wireless link in a next-generation digital wireless telephone, and in particular, an automatic link setting method according to a registration mode in a digital wireless telephone that attempts to sequentially link all slots in a mode registered in a next-generation digital wireless telephone. It is about.

Next-generation digital radiotelephones are typically connected to a Public Switching Telephone Network (PSTN) via a base station called Telepoint. The base station includes a public base station and a home base station. The CT2 can talk within a radius of 200m of the base station.

As is well known, the CT2 conforms to the CAI (Common Air Interface) protocol, which is a standard, and employs a frequency division multiple access / time division duplex (FDMA / TDD) scheme.

1 is a flowchart illustrating a call setup process between a conventional next generation digital radiotelephone and a base station.

The call setup is largely performed by generating a dial tone through a link setup and authentication process, and the call setup is briefly described since it is known in the CAI protocol.

CAI is largely divided into a radio interface unit and a communication signaling protocol. In this case, the radio interface unit relates to a frequency, a channel, a transmission / reception scheme / speed, etc., and a signaling structure includes three multiplexes (hereinafter, referred to as “MUX”). The format of the MUX3 is composed of a signal channel and a synchronization channel, and includes data for requesting link establishment from the CT-2 to the base station. The MUX2 format includes a signal channel and a synchronization channel, and includes data indicating that the base station permits the link to CT2. MUX1 is composed of a voice channel and a signal channel.

Referring to the following description, a general radio link setting process will be described. First, when a user attempts to transmit, CT2 detects the transmission attempt and transmits a format signal of MUX3 to request a link in the first step. Then, the base station receives the signal of the MUX3, confirms the link, and if there is an idle link, transmits the format signal of the MUX2 that approves the link to the CT2 in the second step. CT2 then receives the MUX2 signal, establishes the link, and proceeds to the authentication process. The authentication process first transmits the related values of the codec type and the message packet size to the base station among the base station connection selection and the state of CT2 in CT2. Then, in step 4, the base station receives the related values of the codec type and the message packet size and determines its own information, namely whether to display, high speed signaling, base station producer number, and base station type. To send. In particular, the base station transmits a randomly generated value RAND and ZAP set value to CT2. Where RAND is a 32-bit random value that CT2 will use during call authentication. Then, in the sixth step, CT2 generates a CKEY which is an encryption key using the 'F' algorithm using the RAND value and the KEY value, and transmits a TRD (Terminal Registration Data) and a ZAP to the base station. Here, the CKEY is a 32-bit result of the call authentication operation, which is calculated by CT2 and transmitted to the base station for checking. Then, in step 7, the base station transmits the format signal of MUX2 to CT2 without the B-Channel as the channel control information. Then, in step 8, CT2 receives the format signal of MUX2 and transmits a response signal to the base station. In step 9, the base station receiving the response signal transmits a signal of MUX1 format including the B-Channel to CT2. CT2 receives the MUX1 and transmits a response signal to the base station. This will generate a dial tone and make the call possible.

If the call is enabled in the aforementioned call formation process, the CT2 attempts to establish a link for only one registered slot, and also attempts to link to only one slot when redialing.

Therefore, when the user changes the base station mode, the user must press the key several times from the beginning to set the link attempt, and in the same base station mode, there is an inconvenience in that the registered slot must be set by inputting the key one by one.

Accordingly, an object of the present invention is to establish a link in a next-generation digital wireless telephone according to a registration mode in a next-generation digital wireless telephone, in which a link is attempted sequentially for all slots automatically registered without changing slots of a base station mode and a same base station mode. In providing.

In order to achieve the object of the present invention, the present invention provides a registration mode in a next generation digital radiotelephone having a memory set in the first base station mode, which stores information about registered slots of the first base station mode and the second base station mode. An automatic link setting method according to claim 1, comprising: a first step of attempting to link to a registered slot of the first base station mode, a second step of determining whether the link is successful after the link attempt, and a link in the link success determination If the link is successful, the link establishes the link to the successful slot, and if the link fails, the third process of sequentially attempting to link all the registered slots of the first base station mode and all the slots of the registered first base station. If the link fails, the fourth process of checking whether the slot of the second base station mode is registered and the slot of the second base station mode are registered. A fifth process of attempting to link to the slot of the second base station if present; and a sixth process of determining success or failure of the link after the link attempt, and sequentially attempting to link to all registered slots of the second base station if the link fails. It is characterized by consisting of a process.

1 is a flowchart illustrating a call setup process in a next generation digital wireless telephone.

Figure 2 is a block diagram of a next generation digital radiotelephone to which the present invention is applied.

3 is a flowchart illustrating an automatic link setting method according to a registration mode in a next generation digital wireless telephone according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a block diagram of a next generation digital radiotelephone to which the present invention is applied.

Hereinafter, referring to the drawings, the controller 10 manages the overall operations. In particular, although not shown, the control unit 10 is a central processing unit (CPU), a ROM for storing a performance program according to the present invention, and an electronic programmable program for storing various option data. It is composed of a memory 11 including a pyrom (EEPROM) and a RAM (RAM). The display unit 12 is a display device such as a liquid crystal display (LCD). The display unit 12 displays various display data including an icon indicating the state of CT2 under the control of the control unit 10. The key input unit 13 is composed of a plurality of numeric keys and function keys for performing various functions, and outputs key data to the controller 10 by an external operation. The radio frequency unit (hereinafter referred to as an "RF unit") 30 includes a transceiver 31, a receiver 32, a transmitter 33, and a frequency synthesizer 34. Here, the frequency synthesizing unit 34 generates a frequency for designating a transmission / reception channel of the transmitting unit 33 and the receiving unit 32 under the control of the control unit 10. The transmitting / receiving separating unit 31 transmits or receives the received signal. Separating the radio signal serves as a transmission and reception separation to the front end to the antenna 35 and the receiving unit 32. The receiving unit 32 performs a frequency conversion by filtering and low-noise amplifying the radio signal separated from the transmission and reception separation unit 31 In particular, the receiver 32 measures the received field strength (RSSI) level through a window The transmitter 33 performs a frequency conversion on the signal input from the signal processor 14. The signal is output to the transmission and reception separation unit 31 in the form of a signal, and the signal processing unit 14 operates under the control of the control unit 10, and demodulates the digital signal input through the reception unit 32 into an analog voice signal. And converts the sound through the speaker 15. The signal processor 14 digitally converts an analog voice signal input through the microphone 17 and modulates the analog voice signal into a digital signal and outputs the digital signal to the transmitter 32. The signal processor 14 includes a tone generator, Under the control of 10), the buzzer 16 generates a tone.

3 is a flowchart illustrating an automatic link setting method for each registration slot in a next-generation digital wireless telephone according to an exemplary embodiment of the present invention.

Referring to FIG. 3, first, in step 301, the controller 10 checks the memory 11 and attempts to link to the slot of the first base station mode currently set in the memory 11. For example, if the first base station mode set in the memory 11 is a public mode, a link is attempted to an initial slot of a public mode, and if a home mode, a link is attempted to a slot of a registered home mode. Typically, up to four slots in the public mode can be registered, and up to six slots in the home mode can be registered. After the link attempt, the controller 10 proceeds to step 303 to check whether the link is successful, and if the link is successful, sets the link to the slot. However, if the link fails, the controller 10 checks whether another registered slot of the first base station mode exists in step 305. For example, in the public mode, it is checked whether other slots other than the initial slot are registered among the four slots that can be registered, and in the home mode, it is checked whether other slots of the six slots are registered. If another slot of the first base station mode is registered, the controller 10 changes to the registered slot in step 306 and then proceeds to step 301 after a delay of a predetermined time in step 307. Steps 301 to 307 are repeated until a link is attempted for all registered slots. If the link is attempted for all the registered slots of the first base station mode by repeating the operations in step 301 and step 307, the control unit 10 proceeds to step 309 and checks whether the second base station mode is registered. . It checks whether the slot of the home mode, which is the second base station mode, is registered if the first base station mode to which the link is currently being attempted is registered, and if the first base station mode is the home mode, This is to check whether a slot is registered. If there is a slot in the second base station mode in step 309, the controller 10 proceeds to step 311 and attempts to link to the slot in the second base station mode. After the link attempt, the controller 10 determines whether the link is successful in step 313, and if the link is successful, the controller 10 proceeds to step 321 in which the base station mode set in the memory 11 is selected in the first base station mode. Switch to the second base station mode and set, and set a link to the slot of the second base station mode. However, if the link fails, the controller 10 proceeds to step 315 to check whether there is another registered slot in the second base station mode. If there is a registered slot of the second base station mode in step 315, the control unit 10 changes to another slot in step 317, and proceeds to step 311 after a delay of a predetermined time in step 319. In step 311 to step 319 is repeated until the link is attempted for all slots of the second base station mode. If there are no more slots registered in step 315 during the repeated execution of step 319 in step 311, the controller 10 ends the link attempt.

As described above, the present invention has an advantage of reducing the time required for link establishment by automatically attempting to link according to all registered slots regardless of the base station mode.

Another advantage of the present invention is that since the base station mode is automatically changed when the base station mode of the slot in which the link is formed is different from the previous base station mode after the link is formed, the user does not need to change the base station mode.

Claims (7)

In the automatic link setting method according to the registration mode in the next generation digital radiotelephone having a memory for registering at least one slot information for the first base station mode and the second base station mode each having a plurality of slots, And attempting to link sequentially with predetermined priority for each slot of the base station modes registered in the next generation digital radiotelephone. In a next-generation digital radiotelephone having memory for registering at least one slot information for a first base station mode and a second base station mode each having a plurality of slots, and setting slots of the first base station mode as priority. In the automatic link setting method according to the registration mode, A first step of attempting to link to an initially set slot of the first base station mode; A second step of determining whether the link is successful after the link attempt; A third step of establishing a link to a slot in which the link succeeds if the link succeeds in determining whether the link succeeds, and sequentially attempts to link other registered slots in a first base station mode if the link fails; A fourth process of checking whether a slot of a second base station mode is registered if a link fails for all slots of the registered first base station; A fifth step of attempting to link to a slot of the second base station if the slot of the second base station mode is registered; And determining a link success after the link attempt, and if the link fails, attempting to link sequentially to other slots of the second base station. The method of claim 2, And if the link is successful in the sixth step, changing the priority of the first base station mode set in the memory to the second base station mode and setting the second base station mode as the reference mode. The method according to claim 1 or 2, And wherein the first base station mode is a public mode or a home mode. The method according to claim 1 or 2, And the second base station mode is a public mode or a home mode. The method of claim 2, And a predetermined delay time when the slot is changed. The method of claim 6, The predetermined delay time is 1 second.

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