Modeling of hybrid time-code division multiple access communication access

• US 20040185790A1
• Filed: 03/04/2004
• Published: 09/23/2004
• Est. Priority Date: 05/28/2002
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Zeira, Eldad, LaSita, Frank
• Granted Patent: US 7,133,366 B2
• Time in Patent Office: Days
• US Class Current: 455/67.11
• CPC Class Codes: H04W 16/22 Traffic simulation tools or models
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 72/54 based on quality criteria

Abstract

A model for a wireless code division multiple access communication system is generated. A plurality of first snapshots is provided. Each first snapshot has a plurality of user equipments (UEs) and base stations. Locations of the UEs in each first snapshot vary between the first snapshots. For each first snapshot, that first snapshot is divided into an uplink and downlink snapshot. For the uplink snapshot, uplink resources are assigned to each UE and an uplink transmission power level is determined of that UE. Dropped and not admitted UEs are determined in the uplink snapshot. For the downlink snapshot, downlink resources are assigned to each UE. Dropped and not admitted UEs are determined in the downlink snapshot based on the assigned downlink resources. Statistics are gathered on a performance of the system using the determined dropped and not admitted UEs.

Claims

1. A method for modeling a wireless code division multiple access communication system, the method comprising:

providing a plurality of first snapshots, each first snapshot having a plurality of user equipments (UEs) and base stations, locations of the UEs in each first snapshot vary between the first snapshots;

for each first snapshot, dividing that first snapshot into an uplink and downlink snapshot;

for the uplink snapshot;

assigning uplink resources to each UE and determining an uplink transmission power level of that UE; and

determining dropped and not admitted UEs in the uplink snapshot; and

for the downlink snapshot;

assigning downlink resources to each UE; and

determining dropped and not admitted UEs in the downlink snapshot based on the assigned downlink resources; and

gathering statistics on a performance of the system using the determined dropped and not admitted UEs.

2. The method of claim 1 further comprising for each first snapshot, gathering statistics for the uplink snapshot and the downlink snapshot and combining the gathered uplink and downlink statistics.

3. The method of claim 1 wherein each UE in the uplink or downlink snapshot is added sequentially and a transmission power level of each UE is determined after each sequential addition.

4. The method of claim 1 wherein a plurality of resource management algorithms is evaluated and statistics for each algorithm are gathered for all of the first snapshots.

5. The method of claim 1 wherein groups of the UEs in the uplink or downlink snapshot are added sequentially and a transmission power level of each UE is determined after each sequential addition.