Device and method for enabling the reception, by a mobile terminal located in a moving conveyance, of signals transferred in at least a first and a second cells of a wireless cellular telecommunication network

• US 8,041,356 B2
• Filed: 02/13/2008
• Issued: 10/18/2011
• Est. Priority Date: 02/14/2007
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Voyer, Nicolas, Bonneville, Herve
• Primary Examiner(s): Kincaid; Lester
• Assistant Examiner(s): Ajayi; Joel
• Application Number:
  US12/030,642
• Publication Number:
  US 20080194261A1
• Time in Patent Office: 1,343 Days
• Field of Search: 455/432.1, 455/440, 455/441, 455/443, 455/448, 455/452.2, 455/456.3
• US Class Current: 455/436
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection

Abstract

A device assisting in reception, by a mobile terminal located in a moving conveyance, of signals transferred in at least a first cell and a second cell of a wireless cellular telecommunication network composed of plural base stations, the moving conveyance moving from a first area to a second area.

Claims

1. A device assisting in reception, by a mobile terminal located in a moving conveyance, of signals transferred in at least a first cell and a second cell of a wireless cellular telecommunication network composed of plural base stations, the moving conveyance moving from a first area to a second area, the device configured to:

identify a first base station which transfers signals in a first cell comprising the first area, identify a second base station which transfers signals in a second cell comprising the second area, obtain information representative of the position of the moving conveyance relative to its destination, determine a first coefficient and a second coefficient from the information representative of the position of the moving conveyance, obtain signals transferred in the first and the second cells by the first and second base stations, multiply the signals transferred in the first cell by the first coefficient and multiply the signals transferred in the second cell by the second coefficient, combine the multiplied signals into combined signals, and transfer the combined signals to the mobile terminal located in the moving conveyance.

2. The device according to claim 1, further configured to:

obtain signals transferred by the mobile terminal located in the moving conveyance, and

transfer to the first and second base stations the signals transferred by the mobile terminal located in the moving conveyance.

3. A device assisting in reception, by a mobile terminal located in a moving conveyance, of signals transferred in at least a first cell and a second cell of a wireless cellular telecommunication network composed of plural base stations, the moving conveyance moving from a first area to a second area, the device configured to:

identify a first base station which transfers signals in a first cell comprising the first area, identify a second base station which transfers signals in a second cell comprising the second area, obtain information representative of the position of the moving conveyance relative to its destination, determine a first coefficient and a second coefficient from the information representative of the position of the moving conveyance, obtain signals transferred in the first and the second cells by the first and second base stations, multiply the signals transferred in the first cell by the first coefficient and multiply the signals transferred in the second cell by the second coefficient, combine the multiplied signals into combined signals, transfer the combined signals to the mobile terminal located in the moving conveyance, obtain signals transferred by the mobile terminal located in the moving conveyance, determine a third coefficient and a fourth coefficient from the information representative of the position of the moving conveyance, multiply the signals transferred to the first base station by the third coefficient and multiply the signals transferred to the second base station by the fourth coefficient, and transfer the signals multiplied by the third coefficient to the first base station and the signals multiplied by the fourth coefficient to the second base station.

4. The device according to claim 3, wherein the moving conveyance is an elevator cabin of a building, the combined signals transferred to the mobile terminal located in the moving conveyance are transferred through an antenna located in the elevator cabin, the signals transferred by the mobile terminal are obtained through the antenna, the first area is located in an origin floor at which the elevator cabin previously stopped and the second area is a destination floor of the elevator cabin.

5. The device according to claim 4, further configured to receive, from an elevator controller, information representative of the position of the destination of the elevator cabin.

6. The device according to claim 5, wherein the first and third coefficients are determined from a variable X_a calculated according to the following formula:

7. The device according to claim 6, wherein the first and third coefficients are calculated according to the following formula:

coeff_DLi=coeff_ULi=1−

X_a wherein, coeff_DLi is the first coefficient and coeff_ULi is the third coefficient.

8. The device according to claim 6, wherein the first and third coefficients are calculated according to the following formula:

coeff_DLi=coeff_ULi=10<sup>−

Δ

Xa/10</sup>,

with Δ

is a predetermined value, coeff_DLi is the first coefficient, and coeff_ULi is the third coefficient.

9. The device according to claim 6, wherein the first predetermined position is located between the position of the origin floor at which the elevator cabin previously stopped and the position of the destination floor or is a position at which information representative of the position of the destination of the elevator cabin have been received or is the position of the origin floor at which the elevator cabin previously stopped.

10. The device according to claim 6, wherein the second and fourth coefficients are determined from a variable X_b calculated according to the following formula:

11. The device according to claim 10, wherein the second and fourth coefficients are calculated according to the following formula:

coeff_DLj=coeff_ULj=X_b wherein, coeff_DLj is the second coefficient and coeff_ULj is the fourth coefficient.

12. The device according to claim 11, wherein the second and fourth coefficients are calculated according to the following formula:

coeff_DLj=coeff_ULj=10<sup>−

Δ

(1−

Xb)/10</sup>,

with Δ

is a predetermined value, coeff_DLj is the second coefficient and coeff_ULj is the fourth coefficient.

13. The device according to claim 10, wherein the second predetermined position is located between the position of the origin floor at which the elevator cabin previously stopped and the position of the destination floor or is a position at which information representative of the position of the destination of the elevator cabin have been received or is the position of the origin floor at which the elevator cabin previously stopped.

14. The device according to claim 10, wherein the building comprises a third floor in which a third base station transfers signals in a third cell and in that the device is further configured to:

obtain signals transferred in the third cell by the third base station,

determine a fifth coefficient from the information representative of the position of the elevator cabin,

multiply the signals transferred in the third cell by the fifth coefficient, and

the signals multiplied by the fifth coefficient are combined with the combined signals.

15. The device according to claim 14, the device further configured to:

determine a sixth coefficient from the information representative of the position of the elevator cabin,

multiply the signals transferred by the mobile terminal by the sixth coefficient, and

transfer the signals multiplied by the sixth coefficient to the third base station.

16. The device according to claim 15, wherein the device is further configured to receive, from an elevator controller, information representative of the position of the third floor, the third floor being another destination floor of the elevator cabin next to the destination of the elevator cabin.

17. The device according to the claim 15, wherein the fifth and sixth coefficients are determined from a variable X_c calculated according to the following formula:

18. The device according to claim 17, wherein the fifth and sixth coefficients are calculated according to the following formula:

coeff_DL1=coeff_UL1=X_c wherein, coeff_DL1 is the fifth coefficient and coeff_UL1 is the sixth coefficient.

19. The device according to claim 16, wherein the fifth and sixth coefficients are calculated according to the following formula:

coeff_DL1=coeff_UL1=10<sup>−

Δ

(1−

Xc)/10</sup>,

with Δ

is a predetermined value, coeff_DL1 is the fifth coefficient and coeff_UL1 is the sixth coefficient.

20. The device according to claim 17, wherein the third predetermined position is located between the position of the origin floor at which the elevator cabin previously stopped and the position of the destination floor or is a position at which information representative of the position of the third floor have been received or is the position of the origin floor at which the elevator cabin previously stopped.

21. The device according to claim 16, wherein the third floor is not another destination floor next to the destination of the elevator cabin and the fifth and sixth coefficients are equal to null value.

22. A method for assisting in reception, by a mobile terminal located in a moving conveyance, of signals transferred in at least a first cell and a second cell of a wireless cellular telecommunication network composed of plural base stations, the moving conveyance moving from a first area to a second area, the method comprising:

identifying a first base station which transfers signals in a first cell comprising the first area, identifying a second base station which transfers signals in a second cell comprising the second area, obtaining information representative of the position of the moving conveyance relative to its destination, determining a first coefficient and a second coefficient from the information representative of the position of the moving conveyance, obtaining signals transferred in the first and the second cells by the first and second base stations, multiplying the signals transferred in the first cell by the first coefficient and multiplying the signals transferred in the second cell by the second coefficient, combining the multiplied signals into combined signals, and transferring the combined signals to the mobile terminal located in the moving conveyance.

23. A non-transitory computer program loadable into a programmable device, comprising instructions or portions of code for implementing the method according to claim 22, when said computer program is executed on a programmable device.