MOBILE COMMUNICATIONS SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, AND PROPAGATION STATE COLLECTING METHOD

• US 20100128620A1
• Filed: 04/25/2008
• Published: 05/27/2010
• Est. Priority Date: 04/27/2007
• Status: Abandoned Application

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Mori, Shinichi, Hosono, Hiroyuki, Ishii, Akira, Cho, Keizo, Igarashi, Kei, Inoue, Yuki
• Application Number:
  US12/597,155
• Publication Number:
  US 20100128620A1
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0085 Hand-off measurements
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

A mobile communications system is disclosed. The mobile communications system includes a unit which causes a mobile station apparatus residing within a communication area of an arbitrary base station apparatus to measure a propagation state of a wireless signal from a surrounding base station apparatus and which collects the measurement results; and a unit which obtains location information of the mobile station apparatus.

Claims

1. A mobile communications system, comprising:

a unit which causes a mobile station apparatus residing within a communication area of an arbitrary base station apparatus to measure a propagation state of a wireless signal from a surrounding base station apparatus and which collects the measurement results; and

a unit which obtains location information of the mobile station apparatus.

2. The mobile communications system as claimed in claim 1, wherein

the mobile station apparatus is caused to measure a location of the own apparatus, and the measured location is collected together with measurement results of the propagation state.

3. The mobile communications system as claimed in claim 1, wherein

the mobile station apparatus is caused to conduct a direct transmission in an uplink and a location of the mobile station apparatus is estimated in an adjacent base station apparatus with its wireless signal.

4. The mobile communications system as claimed in claim 1, wherein

a special signal for adjacent area measurement is transmitted from an adjacent base station apparatus, and the mobile station apparatus measures the propagation state based on the special signal.

5. The mobile communications system as claimed in claim 1, comprising:

a unit which sends an instruction from a first base station apparatus which is one of adjacent base station apparatuses to a second base station apparatus which is the other of the adjacent base station apparatuses, the instruction being to cause a mobile station residing within a communications area of the second base station apparatus to measure a propagation state of a wireless signal from the first base station apparatus and report the measurement results to the first base station apparatus; and

a unit which obtains, in the first base station apparatus, measurement results from the second base station apparatus.

6. The mobile communications system as claimed in claim 5, wherein

the first base station apparatus includes a unit which obtains the measurement results from the mobile station apparatus in a direct transmission in an uplink.

7. A base station apparatus, comprising:

a unit which generates a broadcast signal instructing a mobile station apparatus residing in a communications area of the base station apparatus to measure a propagation state of a wireless signal from a surrounding base station apparatus; and

a unit which receives measurement results of the propagation state from the mobile station apparatus.

8. A mobile station apparatus, comprising:

a unit which receives, from a base station apparatus, a broadcast signal including an instruction to measure a propagation state of a wireless signal from a surrounding base station apparatus;

a unit which measures the propagation state of the wireless signal from the surrounding base station apparatus; and

a unit which transmits, to the base station apparatus, the measurement results of the propagation state.

9. A method of collecting a propagation state, comprising the steps of:

causing a mobile station apparatus residing within a communications area of an arbitrary base station apparatus to measure a propagation state of a wireless signal from a surrounding base station apparatus; and

obtaining location information of the mobile station apparatus.