BFC/ACG STATE MANAGEMENT PROTOCOL
Original Publication Date: 1998-Mar-01
Included in the Prior Art Database: 2002-Jun-20
Jeff Blanchette: AUTHOR [+2]
An iDEN system is comprised of cell sites, a.k.a. Enhanced Base Transceiver Site (EBTS). The EBTS is comprised of an Access Controller Gateway (ACG), one Base Radio (BR) for each RF channel used within the cell site, and other equip- ment (see Figure 1).
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BFWACG STATE MANAGEMENT PROTOCOL
by Jeff Blanchette and Frank Korinek
An iDEN system is comprised of cell sites,
a.k.a. Enhanced Base Transceiver Site (EBTS). The EBTS is comprised of an Access Controller Gateway (ACG), one Base Radio (BR) for each RF channel used within the cell site, and other equip- ment (see Figure 1).
The ACG is responsible for managing all equip- ment at the site. This includes site initialization, fault detection, fault collection, fault reporting, automated fault recovery, performance data collec- tion, performance data reporting, and managed
The BR is comprised of various RF related equipment such as the Base Radio Controller (BRC), Power Supply (PS), Power Amplifier (PA), Exciter, and Receivers. The BRC is responsible for managing the RF equipment. These responsibilities are similar to the ACG's responsibilities listed above.
The EBTS successfully functions due in part to the management interface between the ACG and the BRCs. This interface is based on the BRC managed object and how this object transitions states.
Other Site Equipment
BR BR BR l **
Fig. 1 Block Diagram of EBTS
BRC STATE MANAGEMENT
The state of the BRC managed object is a roll-up of the condition of the entire BR. As the condition of the BR changes, the BRC transitions through its defined states. BRC state transitions are reported to the ACG. The ACG uses the BRC state transitions to manage both the BR and the entire site.
states is based on an enhancement to the ISO/IEC specification described in ITU Recommendation X73 1. The three states defined for the BRC in an iDEN system are:
1. Operational State: whether or not the managed object is installed and operational or installed and non-operational. State attributes for oper- ability are
The definition of the BRC managed object "Initial:'* "Disabled," and "Enabled."
0 Motorola. Inc. 1998 13 Much 1998
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2. Usage State**: whether or not the managed object is in-use and what the object's level of operability is. State attributes for usage are "Initial:'* "Idle" (operational, but currently not in-use), "Impaired" (semi-operational and currently in-use), and "active" (fully operational and currently in-use). Some iDEN managed objects do not support the Usage state of "Impaired".
3. Administrative State: whether or not the managed object may be used. State attributes for administration are "Initial:'* "Locked," or "Unlocked."
*The iDEN system adds the "Initial" state to the Operational, Usage, and Administrative States. "Initial" is defined as the state the managed object starts at.
**The iDEN system redefines the management state "Usage". ITU Recommendation X73 I defines "Usage" to be: whether or not the resource is actively in use at a specific instant and, if so, whether or not it has spare capacity for additional users at that instant, b...