Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2001-02-16
2003-10-07
Maung, Nay (Department: 2684)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S414200, C455S556200, C455S565000, C455S090300, C379S442000, C379S456000
Reexamination Certificate
active
06631278
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention generally relates to the field of wireless communications. More particularly, the present invention relates to a novel method for originating packet data service option calls via dial-up networking applications.
2. Description of Related Art
Recent innovations in wireless communication and computer-related technologies, as well as the unprecedented growth of Internet subscribers, have paved the way for mobile computing. In fact, the popularity of mobile computing has placed greater demands on the current communications infrastructure to provide mobile users with more support. A crucial part of meeting these demands and providing users with the necessary support is the use of Code Division Multiple Access (CDMA) technology in wireless communication systems.
CDMA is a digital radio-frequency (RF) channelization technique that is defined in the Telecommunications Industry Association/Electronics Industries Association Interim Standard-95 (TIA/EIA IS-95), entitled “MOBILE STATION-BASE STATION COMPATIBILITY STANDARD FOR DUAL-MODE WIDEBAND SPREAD SPECTRUM CELLULAR SYSTEM”, published in July 1993 and herein incorporated by reference. Wireless communication systems employing this technology assign a unique code to communication signals and spread these communication signals across a common wideband spread spectrum bandwidth. As long as the receiving apparatus in a CDMA system has the correct code, it can successfully detect and select its communication signal from the other signals concurrently transmitted over the same bandwidth. The use of CDMA produces an increase in system traffic capacity, improves overall call quality and noise reduction, and provides a reliable transport mechanism for data service traffic.
FIG. 1
illustrates a simplified block diagram of such a wireless data communication system
100
. System
100
allows a mobile terminal equipment, TE
2
device
102
(e.g., the terminal equipment such as laptop or palmtop computer) to communicate with an Interworking Function (IWF)
108
. System
100
includes a wireless communication device, MT
2
device
104
(e.g., wireless telephone), and a Base Station/Mobile Switching Center (BS/MSC)
106
. The IWF
108
serves as a gateway between the wireless network and other networks, such as the Public Switched Telephone Network (PSTN) and wireline packet data networks providing Internet- or Intranet-based access. An L interface couples IWF
108
to BS/MSC
106
. Often the IWF
108
will be co-located with the BS/MSC
106
. The TE
2
device
102
is electronically coupled to the MT
2
device
104
via the R
m
interface. The MT
2
device
104
communicates with the BS/MSC
106
via the wireless interface U
m
. The TE
2
device
102
and the MT
2
device
104
may be integrated into a single unit or may be separated out, as in the case of an installed mobile phone unit in which a laptop is the TE
2
device
102
and the transceiver is the MT
2
device
104
. It is important to note that, as indicated by
FIG. 2
, the combination of the TE
2
device
102
and the MT
2
device
104
, whether integrated or separate, is generally referred to as a mobile station (MS)
103
.
The ability of CDMA systems to accommodate data service traffic has been defined in the TIA/EIA IS-707.5 standard, entitled “DATA SERVICE OPTIONS FOR WIDEBAND SPREAD SPECTRUM SYSTEMS: PACKET DATA SERVICES,” published in February 1998 and herein incorporated by reference. Similarly, the TIA/EIA IS-707-A.5 standard, entitled “DATA SERVICE OPTIONS FOR SPREAD SPECTRUM SYSTEMS: PACKET DATA SERVICES,” and the TIA/EIA IS-707-A.9 standard, entitled “DATA SERVICE OPTIONS FOR SPREAD SPECTRUM SYSTEMS: HIGH-SPEED PACKET DATA SERVICES,” both published in March 1999 and incorporated by reference, also define requirements for packet data transmission support on TIA/EIA IS-95 systems. In addition, new standards such as TIA/EIA IS-707-A-1 and A-2, entitled “DATA SERVICE OPTIONS FOR SPREAD SPECTRUM SYSTEMS: CDMA
2000
HIGH-SPEED PACKET DATA SERVICES,” (Ballot Resolution Version 1999) and incorporated by reference, also define requirements for packet data transmission support on CDMA systems.
These IS-707.5 packet data services enable mobile users to use their laptop or palmtop computers (i.e., TE
2
device
102
) to receive and transmit packet data, thereby fully supporting Internet- and Intranet-networking connectivity. To wit, just as conventional users employ “wired” communication devices to able to electronically connect their desktop computers to land-based networks, mobile users can utilize wireless communication devices (i.e., MT
2
device
104
) to electronically connect and communicate with such networks.
In particular, the IS-707.5 standard specifies the packet data service options that may be used to communicate between the TE
2
device
102
and IWF
108
via BS/MSC
106
. In doing so, IS-707.5 introduces two protocol option models, which specify the packet data protocol requirements for the R
m
interface.
FIG. 2
depicts one of the protocol option models, the Relay Layer Interface Protocol Option model
200
, in which the application running on the TE
2
device
102
manages the packet data services as well as the network addressing.
At the far left of
FIG. 2
is a protocol stack, shown in conventional vertical format that depicts the protocol layers running on the TE
2
device
102
. At the top of the TE
2
protocol stack lies the upper protocol layers, which includes the application layer
202
. For mobile users utilizing packet data services to access the Internet and/or private Intranets, this layer
202
comprises, for example, web browser programs (e.g., Netscape Navigator™, Microsoft Internet Explorer™ etc.) and communications
etworking applications (e.g., Microsoft Dial-Up Networking™).
The following protocol layer on the TE
2
device
102
protocol stack is the transport layer protocol
204
. As depicted in
FIG.2
, this protocol
204
may be the Transmission Control Protocol (TCP). TCP is defined in Request for Comment 793 (RFC 793) entitled, “TRANSMISSION CONTROL PROTOCOL: DARPA INTERNET PROGRAM PROTOCOL SPECIFICATION”, published in September 1981 and herein incorporated by reference. Essentially, TCP provides a reliable transport service to all applications by managing the assembly of messages coming from the TE
2
device
102
into packets that are transmitted over the Internet.
The subsequent protocol layer is the network layer protocol
206
. This protocol layer may include the Internet Protocol (IP), which is defined in Request for Comment 791 (RFC 791) entitled, “INTERNET PROTOCOL: DARPA INTERNET PROGRAM PROTOCOL SPECIFICATION”, published in September 1981 and herein incorporated by reference. The IP protocol is the life-blood of the Internet as it handles the addressing and routing functionality for all Internet communications. It achieves this by affixing a 32-bit address to the header of packets, so as to ensure that the packets get to the right destination. Each intermediary node in the routing path checks the destination address to determine how to forward the IP packets.
The next layer protocol of the TE
2
device
102
protocol stack is the link layer protocol
208
. As indicated by
FIG. 2
, this layer may include the Point-to-Point Protocol (PPP) which is described in detail in Request for Comments 1661 (RFC 1661), entitled “THE POINT-TO-POINT PROTOCOL (PPP)”, dated May 1992, and herein incorporated by reference. The PPP protocol is a link layer protocol used to configure, test, and establish the data link connection. The PPP protocol encodes packets coming from the upper protocol layers of the TE
2
102
device and “serializes” then to facilitate transmission on the serial communications link.
Finally,
FIG. 2
illustrates that the TE
2
protocol stack is logically connected to the protocol stack of the MT
2
device
104
over the R
m
interface through the relay layer protocol
210
. The R
m
interface may comply, for example, with the TIA/EIA-232-F standard, entitled “INT
Abrol Nischal
Lioy Marcello
Willkie James J.
Brown Charles
Gantt Alan T.
Maung Nay
Palley Nicholas
Qualcomm Inc.
LandOfFree
Method for originating packet data calls via dial-up... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for originating packet data calls via dial-up..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for originating packet data calls via dial-up... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3141679