Process for establishing telecommunication connections between telecommunication apparatuses in wireless telecommunication systems, in particular between DECT-apparatuses of a DECT-system

• US 6,400,949 B1
• Filed: 01/22/1999
• Issued: 06/04/2002
• Est. Priority Date: 08/09/1996
• Status: Expired due to Fees

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Lenfort, Christoph, Bielefeld, Ludger
• Primary Examiner(s): VO, NGUYEN THANH
• Application Number:
  US09/230,493
• Time in Patent Office: 1,229 Days
• Field of Search: 455/434, 455/422, 455/510, 455/517, 455/462, 455/465, 455/62, 370/347
• US Class Current: 455/434
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04M 2250/08 home cordless telephone systems using the DECT standard
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 72/563 of the wireless resources
• CPC Class Codes: H04W 74/02 Hybrid access
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

In order to set up telecommunication connections more quickly between a DECT fixed part and a DECT mobile part (portable part) of a DECT system, if no items of “blind slot” information relating to the telecommunication connections to be set up are present, and to increase the probability that a connection setup takes place given these conditions, the DECT radio channels used in failed attempts at setting up the telecommunication connections are marked, at least temporarily, as unusable radio channels for further connection setup attempts.

Claims

1. A method for setting up telecommunication connections between first telecommunication apparatuses and second telecommunication apparatuses in wireless telecommunication systems, using a hybrid multiple access method having a TDMA principle, comprising the steps of:

transmitting additional items of information from the first telecommunication apparatuses to the second telecommunication apparatuses on radio channels, which items indicate that first radio channels are available for the telecommunication connections with the first telecommunication apparatuses and which items indicate second radio channels are not available;

transmitting first items of request information for a connection setup from the second telecommunication apparatuses to the first telecommunication apparatuses on one of the first radio channels or the second radio channels, if the second telecommunication apparatuses have received no additional items of information;

transmitting second items of request information for the connection setup from the second telecommunication apparatuses to the first telecommunication apparatuses on the first radio channels if the second telecommunication apparatuses have received the additional items of information;

transmitting items of response information from the first telecommunication apparatuses to the second telecommunication apparatuses if the items of request information have been received on the first radio channels;

transmitting from the second telecommunication apparatuses the first items of request information to the first telecommunication apparatuses until the second telecommunication apparatuses;

have received the additional items of information,

have received the items of response information, or

have respectively transmitted a predetermined number n of the first items of request information;

registering by a respective second telecommunication apparatus, which has transmitted the first item of request information to a respective first telecommunication apparatus and which has received no item of response information from the first telecommunication apparatus, the radio channel used as a third radio channel or, respectively, as third radio channels, on which third channel, or respectively third channels transmission of further first items of request information of the respective second telecommunication apparatus is excluded.

2. The method according to claim 1, wherein the radio channel or, respectively, channels is or, respectively, are registered as a third radio channel or, respectively, channels, by storage of channel-specific identifiers.

3. The method according to claim 2, wherein the registered third radio channel or, respectively, channels is/are erased, and wherein the number n is reset to the initial value if the respective second telecommunication apparatus

(i) has received the additional information,

(ii) has received the response information, or

(iii) has respectively transmitted the predetermined number n of the first items of request information.

4. The method according to claim 1, wherein the first telecommunication apparatus is a wireless base station and the second telecommunication apparatus is a wireless mobile part.

5. The method according to claim 1, wherein each of the first telecommunication apparatus and the second telecommunication apparatus are a wireless mobile part.

6. The method according to claim 1, wherein a TDMA time slot is allocated to the radio channel, or, respectively, TDMA time slots are allocated to the radio channels.

7. The method according to claim 6, wherein the items of additional information (BSI, BCI) are DECT/GAP-specific items of “

blind slot”

information.

8. The method according to claim 1, wherein the first items of request information and the second items of request information are DECT/GAP-specific items of information for introducing setup of telecommunication connections.

9. The method according to claim 1, wherein the first items of request information and the second items of request information are DECT/GAP-specific items of information for introducing setup of telecommunication connections, whereby the telecommunication connections to be set up replace existing telecommunication connections.

10. The method according to claim 8, wherein the predetermined number n of first items of request information is equal to ten.

11. The method according to claim 9, wherein the predetermined number n of first items of request information is equal to fifteen.

12. The method according to claim 1, wherein the first telecommunication apparatuses are DECT fixed parts and wherein the second telecommunications apparatuses are DECT mobile parts.