Scalable wireless multicell VoIP architecture

• US 9,100,928 B2
• Filed: 12/16/2011
• Issued: 08/04/2015
• Est. Priority Date: 12/29/2010
• Status: Active Grant

• Current Assignee: RTX A/S
• Original Assignee: RTX A/S
• Inventors: Petersen, Jens Toftgaard, Jensen, Rune Strm, Hvedegaard, Henrik, Hansen, Lars
• Primary Examiner(s): Mew, Kevin
• Application Number:
  US13/995,632
• Publication Number:
  US 20130272208A1
• Time in Patent Office: 1,327 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 65/1036 at the edge
• CPC Class Codes: H04L 65/1053 IP private branch exchange [PBX] functionality entities or arrangements circuit switched PBXs H04M3/00
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04W 36/0005 Control or signalling for completing the hand-off
• CPC Class Codes: H04W 36/0069 in case of dual connectivity, e.g. decoupled uplink/downlink
• CPC Class Codes: H04W 76/00 Connection management

Abstract

Wireless base station device for handling wireless communication, e.g. DECT, between a plurality of associated wireless terminals and an IP network. The base station device has a radio transceiver, a network interface, and a processor with communication application and a communication session management software. The communication session management is arranged to control a communication session with an associated wireless terminal (upper layer management), while wireless communication with said associated wireless terminal involved with said communication session (lower layer) is handled by another base station device. Thus, the base station can manage separate operation of its upper and lower layer, thereby enabling e.g. hand-over of a session to and from other base stations. This allows self contained single casing base station devices to operate in a network without the need for at central server, and still such network is easy to extend by adding base stations.

Claims

1. A wireless base station device arranged to handle wireless communication between a plurality of associated wireless terminals (T1, T2, T3) and an IP network, the device comprising:

a radio transceiver (RT) arranged to wirelessly communicate with the plurality of wireless terminals (T1, T2, T3),

a network interface (NI) arranged to communicate with the IP network, and

a processor with software arranged to implement

a communication application, and

a communication session management (CSM) for controlling sessions of communication with the plurality of associated wireless terminals (T1, T2, T3),

wherein the communication session management (CSM) is arranged to control a communication session with an associated wireless terminal (T1, T2, T3), while wireless radio frequency communication with said associated wireless terminal (T1, T2, T3) involved with said communication session is handled by an associated external device (B2, B3),

wherein a lower layer (LL) comprises the radio transceiver (RT), wherein an upper layer (UL) comprises the communication application and the communication session management (CSM), wherein the device comprises a routing layer (RL) serving to separate the lower layer (LL) and the upper layer (UL) so as to allow the upper layer (UL) to handle communication sessions with associated lower layers (LL) physically separate from the upper layer (UL) and, wherein the radio transceiver (RT), the network interface (NI) and the processor are housed within one single casing.

2. The wireless base station device according to claim 1, wherein the wireless base station device (B2) is further arranged to handle a wireless radio frequency communication with an associated wireless terminal involved with a communication session, while said communication session is controlled by an associated external device (B1).

3. The wireless base station device according to claim 1, wherein the associated external device (B1) is an external wireless base station device.

4. The wireless base station device according to claim 3, wherein the lower layer (LL) further comprises a processor for coding of user data.

5. The wireless base station device according to claim 4, wherein the processor is configured to transcode audio data.

6. The wireless base station device according to claim 1, arranged to hand-over an on-going communication session with an associated wireless terminal to an associated external wireless base station device.

7. The wireless base station device according to claim 6, wherein the device is arranged to receive user data from said external wireless base station device and to relay the user data to the IP network by maintaining an IP address already assigned to the communication session before hand-over.

8. The wireless base station device according to claim 1, wherein the device is arranged to receive paging information from the IP network, and to transmit paging information in a wireless signal via the radio transceiver (RT), so as to allow roaming of the plurality of associated wireless terminals (T1, T2, T3).

9. The wireless base station device according to claim 1, wherein the processor is arranged to exchange system configuration data and identity information on the plurality of associated wireless terminals (T1, T2, T3) via the IP network.

10. The wireless base station device according to claim 1, wherein the plurality of associated wireless terminals (T1, T2, T3) comprises a plurality of wireless mobile handsets arranged for speech communication.

11. The wireless base station device according to claim 1, wherein the wireless base station device is arranged for timing synchronization of the radio transceiver (RT) with an associated external wireless base station device.

12. The wireless base station device according to claim 1, wherein the wireless base station device is arranged for assignment of an identification number on the IP network.

13. The wireless base station device according to claim 1, wherein the wireless radio transceiver (RT) is arranged to wirelessly communicate according to a communication standard selected from the group consisting of DECT/CAT-iq, Bluetooth, WiFi, GSM, LTE, Wimax, 3G, and 4G.

14. The wireless base station device according to claim 1, wherein the communication application comprises a VoIP application so as to enable the device to handle VoIP communication between wireless terminals (T1, T2, T3) and the IP network.

15. A wireless network system comprising:

a plurality of wireless base station devices (B1, B2, B3), wherein each of the base station devices comprise;

a radio transceiver (RT) arranged to wirelessly communicate with the plurality of wireless terminals (T1, T2, T3),

a network interface (NI) arranged to communicate with the IP network, and

a processor with software arranged to implement

a communication application, and

a communication session management (CSM) for controlling sessions of communication with the plurality of associated wireless terminals (T1, T2, T3),

wherein the communication session management (CSM) is arranged to control a communication session with an associated wireless terminal (T1, T2, T3), while wireless radio frequency communication with said associated wireless terminal (T1, T2, T3) involved with said communication session is handled by an associated external device (B2, B3),

wherein a lower layer (LL) comprises the radio transceiver (RT), wherein an upper layer (UL) comprises the communication application and the communication session management (CSM), wherein the device comprises a routing layer (RL) serving to separate the lower layer (LL) and the upper layer (UL) so as to allow the upper layer (UL) to handle communication sessions with associated lower layers (LL) physically separate from the upper layer (UL) and, wherein the radio transceiver (RT), the network interface (NI) and the processor are housed within one single casing, and

a second plurality of wireless terminals (T4, T5, T6) arranged for wireless communication via the radio transceiver (RT) of at least one of the plurality of wireless base station devices (B1, B2, B3).