Combined base transceiver station and base station controller handoff
View Patent ↗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.
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 the RCC to request a radio resource and wherein the MCC interfaces with an selector distribution unit (SDU) allocate a selector resource, and the SDU determines the soft handoff and initiates a message to the MCC; 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,
the first module and the second module are integrated into a single compact platform that is modular and stackable for providing wireless coverage,
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 an 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 after the mobile station receives an Extended/General/Universal Handoff Direction message from the SDU.
10. 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 SCP and the MCP are integrated into a single compact platform that is modular and stackable for providing wireless coverage,
the MCC interfaces with the RCC to request a radio resource and the SDU to allocate a selector resource,
the SDU determines the soft handoff and initiates a message to the MCC,
the MCP is configured to control a plurality of radio access networks (RANs), and
the plurality of RANs do not contain an MCP.
11. The method of claim 10 , comprising relaying via a Packet Control Function (PCF) call processing functionality between the SDU and the MCC to provide internal signaling and packet delivery.
12. The method of claim 10 , comprising receiving a traffic channel assignment message by the SCP.
13. The method of claim 10 , comprising receiving an indication of an addition of a new sector for the soft handoff by the MCP.
14. A system, comprising:
a main call control (MCC) adapted to receive a soft handoff request message; and
a channel element control (CEC) adapted to receive a traffic channel assignment message,
wherein the CEC and the 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,
the first module and the second module are integrated into a single compact platform that is modular and stackable,
the MCC interfaces with the RCC to request a radio resource and the SDU to allocate a selector resource,
the SDU determines the soft handoff and initiates a message to the MCC,
a master main control (MCP) is configured to control a plurality of radio access networks (RANs), and
the plurality of RANs do not have an MCP.
15. The system of claim 14 , comprising a Packet Control Function (PCF) adapted to relay call processing functionality between the SDU and a main call control (MCC) to provide internal signaling and packet delivery.
16. The system of claim 14 , wherein the CEC is adapted to receive an indication of an addition of a new sector for the softer handoff.