Control of antenna pattern

• US 20070002805A1
• Filed: 08/29/2005
• Published: 01/04/2007
• Est. Priority Date: 06/29/2005
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Kauppinen, Hannu, Laurila, Juha
• Application Number:
  US11/212,699
• Publication Number:
  US 20070002805A1
• Time in Patent Office: Days
• US Class Current: 370/337
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 25/00 Antennas or antenna systems providing at least two radiating patterns arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00
• CPC Class Codes: H01Q 3/2605 Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
• CPC Class Codes: H04B 7/0604 with predefined switching scheme

Abstract

An antenna pattern can be modified in a radio system including at least one user terminal and at least one base station. A user terminal and a base station communicate using at least two channels of different type with time slots of a time division multiple access method. The base station forms at least two different antenna patterns per each channel, the at least two antenna patterns of each channel differing from each other in a vertical direction during at least two different time slots.

Claims

1. A method of forming an antenna pattern in a radio system including at least one user terminal and at least one base station, the method comprising:

communicating between the at least one user terminal and the at least one base station using at least two channels of different types with time slots of a time division multiple access method; and

forming, with the at least one base station, at least two different antenna patterns per channel, the at least two different antenna patterns per channel differing from each other in a vertical direction during at least two time slots of a predetermined period of time.

2. The method of claim 1, the method further comprising:

forming a timing advance for a time slot of each user, and forming an antenna pattern for each time slot of a traffic channel based on a timing advance of the time slot.

3. The method of claim 1, the method further comprising:

modifying the antenna pattern in at least one time slot of a channel transmitted to all users within a coverage of the at least one base station during a predetermined period of time, the antenna pattern being unmodified in other time slots.

4. The method of claim 1, the method further comprising:

forming different antenna patterns per channel by tilting the antenna patterns differently in the vertical direction.

5. The method of claim 2, the method further comprising:

tilting the antenna pattern of the traffic channel in the vertical direction such that a tilting angle is larger with a smaller timing advance and the tilting angle is smaller with a larger timing advance.

6. A method of forming an antenna pattern in a radio system including at least one user terminal and at least one base station, the method comprising:

communicating between a user terminal and a base station using time slots of a time division multiple access method;

forming a timing advance for a time slot of each user;

forming, by the at least one base station, at least two different antenna patterns per channel, the at least two different antenna patterns differing from each other in a vertical direction;

forming the antenna pattern for each time slot of a traffic channel based on the timing advance of the time slot; and

forming different antenna patterns in at least two different time slots of a broadcast channel during a predetermined period of time.

7. A radio system, comprising:

a user terminal; and

a base station,

wherein the user terminal and the base station are configured to communicate together using at least two channels of different types with time slots of a time division multiple access method, and

wherein the base station is configured to form at least two different antenna patterns per channel, the at least two different antenna patterns per channel differing from each other in a vertical direction during at least two different time slots of a predetermined period of time.

8. The radio system of claim 7, wherein the radio system is configured to form a timing advance for a time slot of each user, and the base station is configured to form an antenna pattern for each time slot of a traffic channel based on a timing advance of the time slot.

9. The radio system of claim 7, wherein the base station is configured to modify an antenna pattern in at least one time slot of a channel transmitted to all users within a coverage of the base station during a predetermined period of time, and the base station is configured to keep the antenna pattern unmodified in other time slots.

10. The radio system of claim 7, wherein the base station is configured to form different antenna patterns per channel by tilting the antenna patterns differently in a vertical direction.

11. The radio system of claim 8, wherein the base station is configured to tilt the antenna pattern of the traffic channel in the vertical direction such that a tilting angle is larger with a smaller timing advance and the tilting angle is smaller with a larger timing advance.

12. A radio system, comprising:

a user terminal; and

a base station, wherein the base station and the user terminal are configured to communicate together using at least two channels of different types with time slots using time division multiple access,

the radio system is configured to form a timing advance for a time slot of each user,

the base station is configured to form at least two different antenna patterns per channel, the at least two antenna patterns differing from each other in a vertical direction,

the base station is configured to form an antenna pattern for each time slot of a traffic channel based on the timing advance of the time slot, and

the base station is configured to form different antenna patterns in at least two different time slots of a broadcast channel during a predetermined period of time.

13. A base station in a radio system, comprising:

a user terminal; and

a base station,

wherein the user terminal and the base station are configured to communicate with each other using at least two channels of different types with time slots of a time division multiple access method, and

wherein the base station is configured to form at least two different antenna patterns per channel, the at least two antenna patterns per channel differing from each other in a vertical direction during at least two different time slots of a predetermined period of time.

14. The base station of claim 13, wherein the base station is configured to receive a timing advance for a time slot of each user, and the base station is configured to form an antenna pattern for each time slot of a traffic channel based on a timing advance of the time slot.

15. The base station of claim 13, wherein the base station is configured to modify an antenna pattern in at least one time slot of a channel transmitted to all users within a coverage of the base station during a predetermined period of time, and the base station is configured to keep the antenna pattern unmodified in other time slots.

16. The base station of claim 13, wherein the base station is configured to form different antenna patterns per channel by tilting the antenna patterns differently in a vertical direction.

17. The base station of claim 14, wherein the base station is configured to tilt the antenna pattern of the traffic channel in the vertical direction such that a tilting angle is larger with a smaller timing advance and the tilting angle is smaller with a larger timing advance.

18. A base station in a radio system, comprising:

a user terminal; and

a base station,

wherein the user terminal and the base station are configured to communicate together using at least two channels of different types with time slots of a time division multiple access method, and

the base station is configured to form at least two different antenna patterns per channel, the at least two different antenna patterns differing from each other in a vertical direction,

the base station is configured to form an antenna pattern for each time slot of a traffic channel based on a timing advance of a time slot of each user, and

the base station is configured to form different antenna patterns in at least two different time slots of a broadcast channel during a predetermined period of time.