MOBILE COMMUNICATION SYSTEM

• US 20150334636A1
• Filed: 07/23/2015
• Published: 11/19/2015
• Est. Priority Date: 11/04/2008
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: MAEDA, Miho, MOCHIZUKI, Mitsuru, SAEGUSA, Taiga, IWANE, Yasushi, KAKEHI, Yuji, NAKAZAWA, Masayuki, SUEMITSU, Taisei
• Granted Patent: US 9,877,268 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 8/02 Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A closed subscriber group (CSG) cell is a cell that allows use of subscribers. In order to receive the service by the CSG cell, a CSG-ID is required to be notified to a user equipment, which cannot be obtained in a situation outside the reach of radio waves from a non-CSG cell. In a mobile communication system including base stations respectively provided to a CSG cell and a non-CSG cell in which access is made to the CSG cell with the use of a CSG-ID issued in a case where use of the CSG cell is allowed, the base station provided in the CSG cell refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network, and the core network determines whether the user equipment is allowed to use the CSG cell and, in the case where the use is allowed, transmits a signal for allowing assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the use of the CSG-ID.

Claims

1. (canceled)

2. A communication method performed in a mobile communication system which comprises user equipment, base stations, and a radio network controller managing an access made by the user equipment to the base stations and a tracking area for tracking a location of the user equipment, the method comprising:

requesting an update of the tracking area from the user equipment to the radio network controller through the base stations manually selected by the user equipment;

checking, in the radio network controller, whether the access made by the user equipment to the base stations is allowed; and

rejecting the update of the tracking area from the radio network controller to the user equipment through the base stations, when the access made by the user equipment to the base stations is not allowed.

3. A mobile communication system comprising:

user equipment;

base stations; and

a radio network controller configured to manage an access made by the user equipment to the base stations and a tracking area for tracking a location of the user equipment, wherein

the user equipment is configured to request an update of the tracking area to the radio network controller through the base stations manually selected by the user equipment, and

the radio network controller is configured to

check whether the access made by the user equipment to the base stations is allowed, and

reject the update of the tracking area to the user equipment through the base stations, when the access made by the user equipment to the base stations is not allowed.

4. A user equipment in a mobile communication system comprising a plurality of user equipment that includes the user equipment, base stations, and a radio network controller managing an access made by the user equipment to the base stations and a tracking area for tracking a location of the user equipment, the user equipment comprising:

circuitry configured to request an update of the tracking area to the radio network controller through the base stations manually selected by the user equipment.

5. A radio network controller in a mobile communication system comprising user equipment, base stations, and a radio network controller managing an access made by the user equipment to the base stations and a tracking area for tracking a location of the user equipment, the radio network controller comprising:

circuitry configured to

check whether the access made by the user equipment to the base stations is allowed, when an update of the tracking area through the base stations manually selected by the user equipment is requested; and

reject the update of the tracking area to the user equipment through the base stations, when the access made by the user equipment to the base stations is not allowed.