Method for simultaneously conveying information to multiple mobiles with multiple antennas

• US 6,751,480 B2
• Filed: 12/01/2000
• Issued: 06/15/2004
• Est. Priority Date: 12/01/2000
• Status: Expired due to Term

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Rudrapatna, Ashok N., Kogiantis, Achilles George, Sunay, Mehmet Oguz
• Primary Examiner(s): Maung, Nay
• Assistant Examiner(s): TRINH, TAN H
• Application Number:
  US09/727,896
• Publication Number:
  US 20020068611A1
• Time in Patent Office: 1,292 Days
• Field of Search: 455/561, 455/562, 455/33.3, 455/452.1, 455/450, 370/410, 370/522, 714/57, 714/47
• US Class Current: 455/562.1
• CPC Class Codes: H04B 7/061 using feedback from receiving side
• CPC Class Codes: H04W 16/28 using beam steering

Abstract

A method for increasing the capacity of a communication network by assigning subscribers of the communication network to individual antennas of an antenna array and allowing the antenna array to convey information to the assigned subscribers under the control of a scheduling algorithm. Antennas—under the control of the scheduling algorithm—in the antenna array are thus able to convey information to different subscribers at different times. The scheduling algorithm determines when to convey information to an assigned subscriber based on channel condition information it receives from the subscribers. The scheduling algorithm also uses the channel condition information to assign certain subscribers to certain antennas.

Claims

1. A method for conveying information in a communication network, the method comprising the steps of:

providing an array of N antennas whereby certain of the antennas are under the control of a scheduling algorithm where N is an integer equal to 2 or greater; and

selecting one of the certain antennas based on channel condition information where, in a first mode of operation, the selected antenna is under the control of the scheduling algorithm and has been pre-assigned to one or a group of subscribers and in a second mode of operation, the selected antenna is an antenna under the control of the scheduling algorithm, and in either mode information is conveyed over a communication channel of the selected antenna.

2. The method of claim 1 wherein the step of providing N antennas comprises providing all N antennas under the control of the scheduling algorithm.

3. The method of claim 1 wherein the step of selecting one of the certain antennas comprises the steps of:

receiving channel condition information from subscribers of the communication network; and

processing the received channel condition information to determine which antenna is the most appropriate antenna for a particular subscriber.

4. The method of claim 1 wherein the step of selecting one of the certain antennas further comprises the step of:

receiving channel condition information from subscribers of the communication network; and

determining when to convey information for a particular subscriber based on the received channel condition information.

5. The method of claim 4 where the step of determining when to convey information for a particular subscriber is further based on subscriber traffic conditions and associated priorities.

6. The method of claim 1 wherein the scheduling algorithm operates in the context of an AAIR scheme where sub-packets of coded information are conveyed to subscribers with the use of an assigned antenna.

7. The method of claim 1 wherein the scheduling algorithm operates in the context of an ARQ based retransmission protocol.