Method for detecting stationary users and call admission control in wireless communication system

• US 8,295,847 B2
• Filed: 08/21/2008
• Issued: 10/23/2012
• Est. Priority Date: 11/01/2007
• Status: Expired due to Fees

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Lee, Seung-Que, Park, Nam Hoon
• Primary Examiner(s): Cumming, William D
• Application Number:
  US12/738,170
• Publication Number:
  US 20100227619A1
• Time in Patent Office: 1,524 Days
• Field of Search: 455/456.1, 455/446, 455/447, 455/450, 455/509, 455/517, 370/331, 370/228, 370/230, 370/230.1, 370/322, 370/326, 370/329, 370/232, 375/229
• US Class Current: 455/446
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/745 Reaction in network
• CPC Class Codes: H04L 47/765 triggered by the end-points
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04W 64/003 locating network equipment
• CPC Class Codes: H04W 64/006 with additional information processing, e.g. for direction or speed determination
• CPC Class Codes: H04W 8/18 Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data

Abstract

The present invention relates to a stationary user detecting system and method and a call admission control method using the same in a wireless communication system. A plurality of base stations located in the wireless Internet system detect a stationary user at regular time intervals and maintain it by a predetermined number of cases for each terminal. Information on the maintained stationary user is recalculated with a stationary probability for each base station so as to be used for call admission control. Therefore, the terminal of the stationary user detected in the wireless Internet system is calculated with the stationary probability value, which is applied to the call admission control, thereby minimizing reservation of undesired resources.

Claims

1. A call admission control method comprising:

receiving a new call request from a terminal;

attempting to allocate a first resource to the requested terminal, the first resource being currently available resource of a base station;

allocating a second resource to the terminal by using a stationary probability for each base station in response to failing to allocate the first resource to the terminal due to the currently available resources not being enough to accept the terminal, the second resource being a resource reserved for a handover call by the base station; and

allocating the second resource to the terminal and admitting a new call allocation requested by the terminal when the second resource is available to be allocated to the terminal.

2. The method of claim 1, wherein the determining of whether to allocate the second resource includes allocating the first resource to the terminal and admitting the new call allocation requested by the terminal when the first resource can be allocated to the terminal.

3. The method of claim 1, wherein the method includes

rejecting the new call allocation requested by the terminal when the second resource cannot be allocated to the terminal.

4. The method of claim 1, wherein the stationary probability for each base station is determined based on stationary probabilities for terminals positioned at each base station and an amount of resources required by the terminals.