Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2000-05-09
2004-05-25
Tran, Cong Van (Department: 2746)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S426200, C455S557000
Reexamination Certificate
active
06741857
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates in general to wireless local loop telephone networks, and more specifically to a method and apparatus for providing a maintenance and diagnostic mode entry access to a wireless local loop telephone network.
2. Description of the Related Art
FIG. 1
is an example of a wireless communication system
100
widely used today. Calls can be made from, or received by, a conventional telephone
102
. Calls originated from the telephone
102
are routed through the public switched telephone network
104
(PSTN) to an inter-working function
106
(IWF) which processes the call for transmission over the wireless communication system
100
. The call is routed to a base station
108
for transmission via antenna
110
to, in a first instance, a cellular telephone depicted by mobile station
114
, or in a second instance, to a local loop wireless (WLL) telephone network, depicted by a fixed wireless terminal
118
(FWT) which are located within the coverage area provided by the base station
108
. The transmitted calls are received by the mobile station
114
via antenna
112
, and by the fixed wireless terminal
118
via antenna
116
within the coverage area. Calls can also be originated from the mobile station
114
or the fixed wireless terminal
118
to the telephone
102
, from the mobile station
114
to the fixed wireless terminal
118
, and from the fixed wireless terminal
118
to the mobile station
114
. The transmission of calls between the telephone
102
and the mobile station
114
is well known to one of ordinary skill in the art, for such systems as mobile radio telephone services, cellular telephone systems, and PCS telephone systems. The transmission of calls between the telephone
102
and the fixed wireless terminal
118
used in wireless local loop telephone networks is also well known to one of ordinary skill in the art.
As previously described above, the prior art wireless local loop telephone networks enabled a number of conventional telephones or other wired communication devices to communicate through the wireless communication system to either telephones connected to a public switched telephone network or cellular phones. When a wireless local loop telephone network was utilized as described above, the transmission protocols used in such systems placed limitations on the types of transmissions which can be handled. Such systems, as described above, regularly provided analog signaling for use with conventional telephones, and in addition provided an OAMP (Operation, Authentication, Maintenance and Provisioning) mode which enabled remote diagnostic monitoring of the fixed wireless terminal
118
and the wireless local loop telephone network. One example of such a prior art system is one utilizing the IS-95 communication protocol. In such prior art systems, all communication directed to the fixed wireless terminal
118
required a separate phone number to be assigned to all locally connected phones and separately to address the fixed wireless terminal
118
to enable the OAM&P mode of operation. No provision was made in such prior art systems for providing communication between devices utilizing digital data without changing the protocols between an end user data mode and an OAM&P mode.
Thus what is needed is a method and apparatus for providing both an OAMP mode of operation and support for digital data devices while maintaining the use of the conventional wireless communication protocols in use today.
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Losh Jason Haines
Svec Larry
Warden James Paul
Garrett Scott M.
Motorola Inc.
Tran Cong Van
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