Patent EP0942614A2 successfully refreshed from Google Patents.
EP0942614A2
Expired / Lapsed
EP
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Wireless access network system capable of reducing call loss probability
Assignee: Mitsubishi Electric Corp
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Filing: 1998-11-11
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Granted: —
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Expires: 2018-11-11
Abstract
Abstract An access network system capable of reducing loss probability in an access network which is connected on one hand to a service node (6) of an existing network through subscriber lines (7), and on the other hand to multiple user terminals (8a-8b), and has a concentrating function. A WAC (Wireless local loop Access Controller, that is, a controller of the access network) (1) connected with the service node (local switch) (6) receives from a base station (2) a notification that no idle wireless channel is present if a wireless circuit (4) is busy when the service node (6) makes a call request, and receives from the base station (2) a notification that an idle wireless channel is present when the base station (2) detects it in the wireless circuit (4). If the WAC (1) receives the channel busy notification, or cannot detect an idle channel in a trunk line (5), the WAC (1) reserves a call processing. If the WAC (1) receives the notification that an idle wireless channel is present, or detects an idle channel in the trunk line (5), and if the current subscriber line (7) from the service node (6) still holds the incoming call state, the WAC (1) releases the reservation of the call processing, and performs a repeated call processing for the call request when the call request is still present.
Inventors
- 👤 Takeshi Imai
- 👤 Masaaki Nemoto
- 👤 Hiroshi Matsuyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 17:31
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; H04W84/10; H04W84/14; H04W72/00; H04W72/50; H04W72/56; H04W72/563
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
261 words
An access network system comprising: a controller (1) of an access network, which is
connected to a local switch (6) through subscriber lines
(7), and has a concentrating function of the lines; at least one base station (2) that is included in said
access network, and is connected to said controller (2);
and at least one unit of user equipment (3a) that is
connected to said base station (2) through a wireless
circuit (4), and is connected to a user terminal (8a), wherein said base station (2) comprises: first notification means (22) for notifying said
controller (1) of an absence of an idle wireless channel
when no available channel is present in the wireless
circuit (4) between said user equipment (3a) and said base
station (2) at a time when said local switch (6) makes a
call request to said user terminal (3a); monitor means (21) for detecting an idle wireless
channel in said wireless circuit (4); and second notification means (22) for notifying said
controller (1) of a presence of an idle wireless channel
when said monitor means (21) detects an idle wireless
channel, and wherein said controller (1) comprises: call processing reserving means (13) for reserving
a call processing of said call request when the absence of
the idle wireless channel is notified; and call processing means (12) for releasing, when the
presence of the idle wireless channel is notified, the
reservation of the call processing, and for carrying out a
call processing to said user equipment (3a) through said
base station (2), when said call request still continues.
Claim 2
Dependent Claim
280 words
An access network system comprising: a controller (1) of an access network, which is
connected to a local switch (6) through subscriber lines
(7), and has a concentrating function of the lines; at least one base station (2) that is included in said
access network, and is connected to said controller (1);
and at least one unit of user equipment (3a) that is
connected to said base station (2) through a wireless
circuit (4), and is connected to a user terminal (8a), wherein said base station (2) comprises: notification means (22) for notifying said
controller (1) of an absence of an idle wireless channel
when no available channel is present in the wireless
circuit (4) between said user equipment (3a) and said base
station (2) at a time when said local switch (6) makes a
call request to said user terminal (8a), and wherein said controller (1) comprises: call processing reserving means (13) for reserving
a call processing of said call request when the absence of
the idle wireless channel is notified by said notification
means (22); a timer (15) for counting a predetermined timer
value; call processing means (12) for starting said timer
(15) at a beginning of a reservation of the call
processing, for releasing, when said timer (15) completes
counting of said predetermined timer value, the reservation
of the call processing, and for carrying out the call
processing to said user equipment (3a) through said base
station (2), when said call request still continues; and timer restart means (14) for restarting said timer
(15) with reserving the call processing of the call request
a second time when the absence of the idle wireless channel
is notified again.
Claim 3
Dependent Claim
282 words
An access network system comprising: a controller (1) of an access network, which is
connected to a local switch (6) through subscriber lines
(7), and has a concentrating function of the lines; at least one base station (2) that is included in said
access network, and is connected to said controller (1);
and at least one unit of user equipment (3a) that is
connected to said base station (2) through a wireless
circuit (4), and is connected to a user terminal (8a), wherein said base station (2) comprises: first notification means (22) for notifying said
controller (1) of an absence of an idle wireless channel
when no available channel is present in the wireless
circuit (4) between said user equipment (3a) and said base
station (2) at a time when said local switch (6) makes a
call request to said user terminal (8a); first monitor means (21) for detecting an idle
wireless channel in said wireless circuit (4); and second notification means (22) for notifying said
controller (1) of a presence of an idle wireless channel
when said first monitor means (21) detects an idle wireless
channel, and wherein said controller (1) comprises: call processing reserving means (13) for reserving
a call processing of said call request; second monitor means (11) for detecting an idle
channel in a trunk line (5) that connects said base station
(2) with said controller (1); and call processing means (12) for releasing, when said
second monitor means (11) detects an idle channel in said
trunk line (5), the reservation of the call processing, and
for carrying out a call processing to said user equipment
(3a) through said base station (2), when said call request
still continues.
Claim 4
Dependent Claim
60 words
The access network system as claimed in any one of
claims 1-3, further comprising means (13) for releasing the
reservation of the call processing for said call request,
when said local switch (6) disconnects the call request
during the reservation of the call processing, wherein said
call processing means (12) completes the call processing
when the call reservation is released.
References Cited (Backward Citations)
No citation records indexed.
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