COMBINED BASE TRANSCEIVER STATION AND BASE STATION CONTROLLER HANDOFF

• US 20130337817A1
• Filed: 08/19/2013
• Published: 12/19/2013
• Est. Priority Date: 01/16/2004
• Status: Active Grant

• Current Assignee: Open Invention Network LLC
• Original Assignee: UbeeAirwalk, Inc. (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Choi, Myoung Chul, Cha, Hyunyung, Park, Hyeon Bong, Yoo, Jae Kyu
• Granted Patent: US 8,909,235 B2
• Time in Patent Office: Days
• US Class Current: 455/442
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point
• CPC Class Codes: H04W 36/10 Reselecting an access point controller
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 36/30 by measured or perceived connection quality data

Abstract

A system, method, and computer readable medium for a softer handoff comprises receiving a Pilot Strength Measurement Message (PSMM) to request a handoff by a selector distribution unit (SDU), receiving a softer handoff request message by a channel element control (CEC), receiving a softer handoff request message by a radio call control (RCC), receiving a traffic channel assignment message by the CEC, and receiving an indication of an addition of a new sector for the softer handoff by the SDU.

Claims

1. A method, comprising:

receiving a soft handoff request message by a radio call control (RCC) from a main call control (MCC);

wherein the MCC interfaces with a selector distribution unit (SDU); and

receiving a message indicating the soft handoff by a channel element control (CEC) from the SDU;

wherein;

the SDU and the CEC are co-located in a first module, and the RCC and the MCC are co-located in a second module;

a master main control processor (MCP) is configured to control a plurality of radio access networks (RANs); and

the plurality of RANs do not contain a MCP.

2. The method of claim 1 comprising updating a handoff state by the RCC.

3. The method of claim 2 comprising receiving a handoff completion message by the CEC.

4. The method of claim 3 comprising receiving a Pilot Strength Measurement Message (PSMM) by the SDU to request a handoff by a selector distribution unit (SDU).

5. The method of claim 4 comprising sending a message by the SDU to drop a serving cell.

6. The method of claim 5 comprising receiving a handoff completion message by the CEC.

7. The method of claim 6 comprising receiving a soft handoff request message by the CEC.

8. The method of claim 7 comprising receiving a handoff completion message by the SDU.

9. The method of claim 8, wherein the handoff completion message is received by the CEC from a mobile station.

10. The method of claim 9, wherein the handoff completion message is received by the CEC from the mobile station after the mobile station receives an Extended/General/Universal Handoff Direction message from the SDU.

11. A method, comprising:

receiving a soft handoff request message by;

a Selector distribution unit (SDU) Channel element control (CEC) Processor (SCP), wherein;

the SCP comprises an SDU and a CEC and a main control processor (MCP);

the MCP includes a radio call control (RCC) and a main call control (MCC);

the MCP is configured to control a plurality of radio access networks (RANs); and

the plurality of RANs do not contain an MCP.

12. The method of claim 11, comprising relaying via a Packet Control Function (PCF) call processing functionality between the SDU and the MCC.

13. The method of claim 12, wherein relaying between the SDU and the MCC provides internal signaling and packet delivery.

14. The method of claim 11, comprising receiving a traffic channel assignment message by the SCP.

15. The method of claim 11, comprising receiving an indication of an addition of a new sector for the soft handoff by the MCP.

16. A system, comprising:

a main call control (MCC) adapted to receive a soft handoff request message;

a channel element control (CEC) adapted to receive a traffic channel assignment message;

wherein the CEC and a selector distribution unit (SDU) are co-located in a first module, and the MCC and a radio call control (RCC) are co-located in a second module; and

a master main control processor (MCP) is configured to control a plurality of radio access networks (RANs);

the plurality of RANs do not have an MCP.

17. The system of claim 16, comprising a Packet Control Function (PCF) adapted to relay call processing functionality between the SDU and a main call control (MCC).

18. The system of claim 17, wherein the relay between the SDU and the MCC provides internal signaling and packet delivery.

19. The system of claim 16, wherein the first module receives a traffic channel assignment message.

20. The system of claim 16, wherein the CEC is adapted to receive an indication of an addition of a new sector for the softer handoff.