Measurement support for a smart antenna in a wireless communication system

Patent metadata

Field	Value
Publication number	US-9967016-B2
Application number	US-201615352805-A
Country	US
Kind code	B2
Filing date	Nov 16, 2016
Priority date	Sep 10, 2004
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A method for taking measurements with a smart antenna in a wireless communication system having a plurality of STAs begins by sending a measurement request from a first STA to a second STA. At least two measurement packets are transmitted consecutively from the second STA to the first STA. Each measurement packet is received at the first STA using a different antenna beam. The first STA performs measurements on each measurement packet and selects an antenna beam direction based on the measurement results.

First claim

What is claimed is:

1. A first station (STA), comprising:
a processor configured to:
send, to a second STA, an indication of a requested number of measurement packets;
receive, at the first STA, the requested number of measurement packets from the second station consecutively, wherein the measurement packets are separated by a short interframe space (SIFS), and wherein the first STA uses a different receive beam for each measurement packet;
measure each of the received measurement packets; and
select a beam based on the measurement of each of the received measurement packets.

2. The first STA of claim 1 , wherein the indication of the requested number of measurement packets is provided in a measurement request packet sent by the first STA to the second STA.

3. The first STA of claim 2 , wherein the indication provided in the measurement request packet is indicated via a field of the measurement request packet.

4. The first STA of claim 1 , wherein each measurement packet includes sequence information.

5. The first STA of claim 1 , wherein the processor being configured to select a beam based on the measurement of each of the received measurement packets comprises being configured to use the received signal strength of each packet.

6. The first STA of claim 1 , wherein the processor is further configured to receive an ACK from the second STA, wherein the ACK is associated with the measurement request packet, and wherein the ACK is received after a short interframe space (SIFS).

7. A method for use in a first station (STA), the method comprising:
sending, to a second STA, an indication of a requested number of measurement packets;
receiving an ACK from the second STA;
receiving, at the first STA, the requested number of measurement packets from the second station consecutively, wherein the measurement packets are separated by a short interframe space (SIFS), and wherein the first STA uses a different receive beam for each measurement packet;
measuring each of the received measurement packets; and
selecting a beam based on the measurement of each of the received measurement packets.

8. The method of claim 7 , wherein the indication of the requested number of measurement packets is provided in a measurement request packet sent by the first STA to the second STA.

9. The method of claim 8 , wherein the indication provided in the measurement request packet is indicated via a field of the measurement request packet.

10. The method of claim 7 , wherein each measurement packet includes sequence information.

11. The method of claim 7 , wherein selecting a beam based on the measurement of each of the received measurement packets comprises using the received signal strength of each packet.

12. The method of claim 7 , wherein the ACK is associated with the measurement request packet, and wherein the ACK is received after a short interframe space (SIFS).

Assignees

• Interdigital Tech Corp

Inventors

• Pinheiro Ana Lucia A
• Chandra Arty
• Cha Inhyok
• Marinier Paul
• Roy Vincent

Classifications

• H04B7/088

  using beam selection · CPC title

• H04B7/0408 Primary

  using two or more beams, i.e. beam diversity · CPC title

• H04B17/336

  Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] · CPC title

• H04B7/0619

  using feedback from receiving side (feedback signaling for adaptive modulation/coding H04L1/0001) · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title