CORDLESS TELECOMMUNICATION SYSTEM WITH BACKUP INTEROPERABILITY OF CORDLESS TELECOMMUNICATION APPLICATIONS, IN PARTICULAR OF A GAP-SPECIFIC DECT SYSTEM

• US 20010011017A1
• Filed: 03/26/1998
• Published: 08/02/2001
• Est. Priority Date: 09/29/1995
• Status: Active Grant

• Current Assignee: Gigaset Communications GmbH (Gigaset AG)
• Original Assignee: Siemens AG
• Inventors: BIEDERMANN, ROLF, BAUMEISTER, JOSEF
• Granted Patent: US 6,490,447 B2
• Time in Patent Office: Days
• US Class Current: 455/462
• CPC Class Codes: H04M 1/72505 Radio link set-up procedures
• CPC Class Codes: H04M 2250/08 home cordless telephone systems using the DECT standard
• CPC Class Codes: H04W 84/08 Trunked mobile radio systems
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

In a cordless telecommunications system with assured interoperability of cordless telecommunications applications, in particular a GAP-specific DECT system (DECT/GAP system), having a cordless base station (G-BS) and having cordless mobile parts (D-MT, G-MT, D/G-MT) which are capable of telecommunication with the cordless base station (G-BS) via a radio interface and the number of which exceeds the number of telecommunications channels which are available in parallel at the cordless base station, collective/group calls being possible while the interoperability of the cordless telecommunications applications remains ensured, mixed operation is implemented, comprising a connection-based virtual-collective/group call and a connectionless collective/group call. In this case, [lacuna] is configured in the cordless base station (G-BS), to which cordless mobile part (D-MT, G-MT, D/G-MT) a connection-based virtual-collective/group call (GAP call; connection-based call) goes and to which cordless mobile part (D-MT, G-MT, D/G-MT) a connectionless collective/group call (connectionless call) goes. To this end, the cordless base station (G-BS) has means (MIC, PGM_me) which are designed in an appropriate manner for this purpose, for controlling connections for the cordless mobile parts.

Claims

1. A cordless telecommunications system with assured interoperability of cordless telecommunications applications, in particular a GAP-specific DECT system,

(a) having a cordless base station (G-BS) and a first number “

m”

of cordless mobile parts (D-MT, G-MT, D/G-MT) which are capable of telecommunication with the cordless base station (G-BS) and the number of which exceeds a second number “

k”

of telecommunications channels (m>

k) which are available in parallel at the cordless base station (G-BS),

(b) having a third number “

m1”

of first cordless mobile parts (D-MT) which respond and react to connectionless call messages,

(c) having a fourth number “

m2”

of second cordless mobile parts (G-MT) which respond and react to connection-based call messages,

(d) having a fifth number “

m3”

of third cordless mobile parts (D/G-MT) which respond and react both to connection-based call messages and to connectionless call messages,

(e) the cordless base station (G-BS) having first means (MIC, PGM_me) for controlling connections for the cordless mobile parts (D-MT, G-MT, D/G-MT), which send a number “

j”

of connection-based call messages and a number “

i”

of connectionless call messages, and

(f) the following conditions applying,

(1) m=m1+m2+m3, in which case m1,m3 ε

N₀ where n=0,1,2, . . . and m,m² ε

N₁ where n=1,2,3, . . .

(2) m²≦

k-1, in which case k ε

N₂ where n=2,3, . . .

(3) j≦

k-1, in which case k ε

N₂ where n=2,3, . . .

2. The cordless telecommunications system as claimed in

claim 1

, characterized in that

the number “

k”

of telecommunications channels to the DECT/GAP Standard available in parallel at the cordless base station (G-BS) is equal to “

12”

.

3. The cordless telecommunications system as claimed in

claim 1

, characterized in that the number “

k”

of telecommunications channels to the DECT/GAP Standard available in parallel at the cordless base station (G-BS) is equal to “

6”

.