KR20040055294A - Apparatus for wire/wireless data service and voice service - Google Patents

Abstract

PURPOSE: A wired/wireless data service and voice service apparatus is provided to utilize wired/wireless data and voice services by using wireless LAN techniques using an IEEE802.11 and VoIP(Voice over Internet Protocol) techniques. CONSTITUTION: An ADSL AFE(Analog Front End)(202) performs data modulation/demodulation function. An ADSL DSP(Digital Signal Processor)(204) processes ADSL data modulated/demodulated in the ADSL AFE(202). An SLIC/SLAC(Subscriber Line Interface Circuit/Subscriber Line Audio-Processing Circuit)(212) supports a voice service of a general fixed line by performing analog/digital conversion or digital/analog conversion. A voice DSP(214) converts data inputted as voice packets into PCM(Pulse Code Modulation) and transmits it to the SLIC/SLAC(212). A network processor(210) controls an overall operation of units. A WLAN NIC(Wireless LAN Network Interface Card)(216) handles internal network of a radio section.

Description

Wired and wireless data service and voice service device {APPARATUS FOR WIRE / WIRELESS DATA SERVICE AND VOICE SERVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for integrating wired and wireless data services and voice services, and more particularly, to an apparatus for providing wired and wireless data services and voice services using Asymmetric Digital Subscriber Line (ADSL) and wireless LAN technology.

In recent years, the Internet has been widely spread not only to office environments but also to general home subscribers, and the data format transmitted and received on the Internet is rapidly changing from a conventional text-based to a multimedia form including voice and video. In addition, the continued increase in Small Office Home Office (SOHO) and telecommuting has increased the need for real-time multimedia services such as remote LAN access and video conferencing, as well as Internet access through Internet service providers. This demand required a fundamental change in the current dial-up modem-centric network environment, which enabled the Asymmetric Digital Subscriber Line (ADSL) service to take advantage of the widespread use of telephone lines worldwide.

The configuration of the ADSL modem used in such an ADSL network is as follows. FIG. 1 is a block diagram schematically showing the configuration of a general ADSL modem. An ADSL modem is connected to a telephone line and performs an ADSL analog front end (AFE) 102 for performing data modulation and demodulation functions. ADSL DSP 104 for ADSL data processing and digital PCM (Pulse Code Modulation) signal to be demodulated and demodulated by analog / digital conversion or digital / analog conversion to perform analog dialup connection function. Subscriber Line Interface Circuit / Subscriber Line Audio-Processing Circuit (SLIC / SLAC) 112 to support the voice service of the wireline, and SLIC / SLAC 112 changes the digital PCM in the direction of the network processor 110 A voice DSP 114 that can transmit voice data to an ADSL telephone line, or converts into a voice packet, and a CPU that collectively controls the overall operation of the device. It converts the protocol between the L and the internal Ethernet, and comprises a network processor 110 for transmitting the Ethernet to the internal network, the external network ADSL portion and vice versa.

By using such an ADSL modem, wired LAN and general telephone service can be provided in an ADSL network. In this case, the data service uses an ADSL network, and the voice service is configured to receive a service using an exchange. Subscribers who receive Internet service using these ADSL modems and subscribers who receive regular telephone service using the same are increasing, and are also gradually becoming wireless. In this case, in order to receive a wireless telephone service, a general telephone must have a separate (900MHz) wireless telephone.

An object of the present invention is to enable a wired / wireless data service and a wired / wireless voice service using a wireless LAN technology and a Voice over Internet Protocol (VoIP) technology using IEEE802.11 as a data service and a general telephone service of an ADSL network.

In order to achieve the above object, the present invention provides a wired / wireless data service and a voice service device, comprising: an analog front end (AFE) for performing a data demodulation function connected to a telephone line, and data processing modulated and demodulated by the AFE 202. Digital Signal Processor (DSP), SLIC / SLAC (Subscriber Line Interface Circuit / Subscriber Line Audio-Processing Circuit) to support voice service of general wireline, Voice that satisfies Voice over Internet Protocol (VoIP) standard A voice DSP for performing processing, a Wireless LAN Network Interface Card (WLAN NIC) for forming an internal network of a wireless section, and collectively controlling overall operations of the respective functional units, and performing signal control for the VoIP. It is characterized by including a network processor.

1 is a schematic overall block diagram of a conventional ADSL modem

2 is a schematic block diagram of an ADSL modem for performing wired / wireless data service and voice service 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. In the following description, specific details such as specific components are shown, which are provided to help a more general understanding of the present invention, and it is understood that these specific details may be changed or changed within the scope of the present invention. It is self-evident to those of ordinary knowledge in Esau.

In the present invention, a VoIP technology and a WLAN technology are applied. First, the VoIP technology allows a LAN user to maintain voice and voice while maintaining an existing infrastructure without changing any network with other network users. It is a standard designed for data communication, and its applications are increasing, such as multimedia video conferencing between departments within a company, communication between different sites, and cheap long distance calls through packet-switched networks. VoIP gateways serve as bridges between circuit-switched networks (telephones, PSTNs) and packet-switched networks (computers, IPs). That is, the gateway performs the function that allows the phone to operate on IP with compatibility with a computer or other telephone system. VoIP gateways are also used to create a virtual, unified network that allows users to send and receive calls over IP data networks using a telephone or computer, just as with today's public switched telephone networks (PSTNs).

Wireless LAN technology has been standardized based on the architecture recommended by IEEE802.11, and has been replaced with a wireless environment that is easy to install and move from a hub to a terminal instead of a wire when constructing a network. Wireless LAN uses the electromagnetic wave between mobile terminal devices connected to Ethernet through access point (AP) instead of laying a wire by wire (cable). have. In addition, the advantage of being able to communicate on the go by using a notebook and PC card without staying in a fixed desktop environment, it is expanding rapidly today. The wired / wireless data service and voice service apparatus according to the present invention using the WLAN and VoIP technologies will be described in more detail below.

2 is a block diagram schematically showing the configuration of an ADSL modem according to an embodiment of the present invention, wherein the ADSL modem is connected to a telephone line to perform an ADSL analog front end (AFE) 102 for performing data modulation and demodulation functions. And an ADSL Digital Signal Processor (DSP) 204 for ADSL data processing, which is demodulated and demodulated in the ADSL AFE 202, and an analog PC to perform a digital dial-up connection function. SLIC / SLAC (Subscriber Line Interface Circuit / Subscriber Line Audio-Processing Circuit) 212 to perform voice conversion of general wireline by performing digital conversion or digital / analog conversion, and G. Performs voice processing such as 711 / G.726 / G.729 to convert digital PCM to SLIC / SLAC 212 and transmit voice data to ADSL telephone line toward network processor 110. Alternatively, the voice DSP 214 converts the data inputted into the voice packet through wireless and wired to the PCM by transmitting the data to the SLIC / SLAC 212 for use as an internal extension. A CPU that controls the overall operation of the device and converts the protocol between ADSL and the internal Ethernet, and transmits Ethernet to the internal network, external network ADSL and vice versa through signal control for VoIP. It comprises a processor 210. In addition, under the control of the network processor 210, a WLAN NIC (Wireless LAN Network Interface Card) 216 that is responsible for the internal network of the wireless section is provided, the WLAN NIC 216 is an access point (AP) of the wireless section It also enables data and voice services in wireless sections through VoIP service.

In addition, the ADSL DSP 2014 and the ADSL AFE9202 may be configured with any DSP and AFE that satisfies the corresponding connection standard of the xDSL such as VDSL and SHDSL as well as ADSL.

Since the ADSL modem according to the present invention has the above-described configuration, the WLAN NIC 216, together with the internal network and the general telephone line service through a network processor using an external telephone line, which has been performed in the conventional general ADSL modem, is used. ), Which is used as AP in wireless section, and provides data and voice service in wireless section through VoIP service.

As described above, the configuration and operation according to an embodiment of the present invention can be made. Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but by the claims and equivalents of the claims.

As described above, the wired / wireless data service and the voice service apparatus according to the present invention provide the wired / wireless data service using the wireless LAN technology using the IEEE802.11 and the Voice over Internet Protocol (VoIP) technology. Enable wired and wireless voice services.

Claims (1)

Wired and wireless data service and voice service device Analog Front End (AFE) for data modulation and demodulation in connection with telephone lines; A digital signal processor (DSP) for processing and demodulating data in the AFE; SLIC / SLAC (Subscriber Line Interface Circuit / Subscriber Line) that supports voice service of general wireline by performing analog / digital conversion or digital / analog conversion of digital PCM (Pulse Code Modulation) signal to perform analog dialup connection function. Audio-Processing Circuit) A voice DSP that performs voice processing that satisfies the Voice over Internet Protocol (VoIP) standard, converts the digital PCM with the SLIC / SLAC, and converts the voice packet with a network processor; WLAN LAN (Wireless LAN Network Interface Card) to act as an access point (AP) of the wireless section and form an internal network of the wireless section, And a network processor which collectively controls the overall operation of each of the functional units and performs protocol conversion for data interface between the WLAN NIC, voice DSP and DSP, and signal control for VoIP.