WILLCOM,
Inc. and WILLCOM Okinawa are pleased to announce the
spring introduction of new mobile terminals compatible
with W-OAM typeG, an accelerated version of the high-speed
PHS communication standard W-OAM.
In addition to the three current modulation methods
available under W-OAM, (PSK, QPSK and BPSK), the W-OAM
typeG is also compatible to the faster 64QAM, 32AQM
and 16QAM. W-OAM typeG offers higher speeds and has
a system to automatically select a faster modulation
method depending on the electromagnetic conditions faster
than the W-OAM, thus enabling a smoother selection of
modulation methods. |
| The features of W-OAM typeG are: |
| 1) |
Mobile data transmissions at up to a maximum
speed of 512 kbps. |
| 2) |
Improved Round Trip Times (RTT) enabling more
comfortable data transmissions. |
|
In addition, the W-OAM typeG compatible AX530IN from
Netindex will be available from the spring. With the
gradual introduction of fiber-optic IP connection service
allowing for high-capacity transmissions at the PHS
base stations after 2007, users can use higher transmission
speeds than the currently available 512 kbps for compatible
data terminals, of up to 800 kbps, at the existing monthly
charges.
WILLCOM will continue to develop higher speeds and better
comfort, providing better data transmission services
to customers. |
| The
Evolution of high-speed PHS communication standard
W-OAM |
|
1. Overview
In order to provide transmission services for a variety
of data faster and more securely, WILLCOM has been introducing
base stations for the high-speed PHS communication standard
W-OAM gradually from highly-populated transmission areas.
From spring 2007, WILLCOM will provide an accelerated
version of W-OAM called W-OAM typeG. Within relevant
supporting areas, users using data terminals compatible
with W-OAM typeG can make use of speeds of up to 512
kbps to transmit data under the 8x packet system. Moreover,
W-OAM typeG automatically selects faster modulation
methods depending on electromagnetic conditions, thus
providing a more secure and stable transmission.
The monthly charge will remain unchanged. The charge
structure as represented by the Flat Rate Plan for Data
Transmission will stay to allow users to enjoy better
and faster data transmission services.
2. Charges
Charges will remain unchanged.
3. Compatible phones
W-OAM typeG compatible data terminals are required.
Sales of terminals are as follows: AX530IN (Netindex)
scheduled for Spring 2007
4. Supporting Areas for W-OAM typeG
W-OAM supporting areas (during maximum speed of 512
kbps). |
| |
| High-speed PHS communications standard |
| Automatically selects faster modulation methods depending
on electromagnetic conditions. In addition to the current
8PSK (8-Phase Shift Keying), QPSK(Quadrature Phase Shift
Keying), and BPSK(Binary Phase Shift Keying) available
with W-OAM, the new version provides higher modulations
of 64QAM(64Quadrature Amplitude Modulation), 32QAM(32Quadrature
Amplitude Modulation) and 16QAM(16Quadrature Amplitude
Modulation). When electromagnetic conditions are favorable,
the system automatically transmits data at a faster
modulation speed. Faster selection of modulation methods
allows secure data transmission with the optimal modulation
method. |
| High-speed transmission with W-OAM typeG |
| From 2007, with the introduction of fiber-optic IP
connection service to backbone networks, W-OAM will
gain higher speed. Transmission speeds at PHS base stations
after the introduction of fiber-optic IP connection
service are as follows. |
| Modulation Method |
4xpacket method |
8xpacket method |
| 16QAM |
approx. 250kbps |
approx. 500kbps |
| 32QAM |
approx. 320kbps |
approx.640kbps |
| 64QAM |
approx. 400kbps |
approx. 800kbps |
|
| (maximum speed available with the different transmission methods) |
|
| * |
The introduction of fiber-optic IP connection service to base stations will gradually commence from central city areas from 2007. |
|
| |
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| Fiber-optic IP connection service Network at base stations |
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