Efficient and consistent wireless downlink channel configuration

Abstract

A method of wireless communication including a base station transmitting a preamble including information indicating a sector identifier and an antenna port value. The base station further transmits a pilot sequence, wherein the pilot sequence and the location of the pilot sequence are based on the sector identifier and on the antenna port value. A base station configured to perform the method is also disclosed. A corresponding subscriber station configured to receive the preamble and pilot sequence is also disclosed, as well as a subscriber station method.

What is claimed is: 
     
         1 . A method of wireless communication, the method comprising:
 transmitting, from a base station, a preamble including information indicating a sector identifier and an antenna port value; and   transmitting, from the base station, a pilot sequence, wherein the pilot sequence and the location of the pilot sequence are based on the sector identifier and on the antenna port value.   
     
     
         2 . The method of  claim 1 , wherein transmitting the preamble comprises:
 transmitting a primary preamble that is common to multiple sectors and base stations; and   transmitting a secondary preamble including the information indicating the sector identifier and the antenna port value.   
     
     
         3 . The method of  claim 2 , wherein the pilot sequence is further based on a number of diversity antennas available for transmission. 
     
     
         4 . The method of  claim 1 , wherein the transmitting the pilot sequence includes transmitting the pilot sequence via a plurality of antennas. 
     
     
         5 . The method of  claim 1 , wherein the pilot sequence and the location of the pilot sequence are predictable based on the sector identifier and on the antenna port value. 
     
     
         6 . The method of  claim 2 , wherein the secondary preamble is based on a Zadoff Chu sequence selected from a family of Zadoff Chu sequences. 
     
     
         7 . A method of wireless communication, the method comprising:
 receiving, at a subscriber station, a preamble including information indicating a sector identifier and an antenna port value; and   receiving, at the subscriber station, a pilot sequence, wherein the pilot sequence and the location of the pilot sequence are based on the sector identifier and on the antenna port value.   
     
     
         8 . The method of  claim 7 , wherein receiving the preamble comprises:
 receiving a primary preamble that is common to multiple sectors and base stations; and   receiving a secondary preamble including information indicating the sector identifier and an the antenna port value.   
     
     
         9 . The method of  claim 8 , wherein the pilot sequence is further based on a number of diversity antennas. 
     
     
         10 . The method of  claim 7 , wherein the receiving the pilot sequence includes receiving the pilot sequence via a plurality of antennas. 
     
     
         11 . The method of  claim 7 , further comprising:
 predicting the pilot sequence and the location of the pilot sequence based on the sector identifier and on the antenna port value.   
     
     
         12 . The method of  claim 8 , wherein the secondary preamble is based on a Zadoff Chu sequence selected from a family of Zadoff Chu sequences. 
     
     
         13 . A base station of a wireless communication network, the base station comprising:
 a transmitter configured to:
 transmit a preamble including information indicating a sector identifier and an antenna port value; and 
 transmit a pilot sequence, wherein the pilot sequence and the location of the pilot sequence are based on the sector identifier and on the antenna port value. 
   
     
     
         14 . The base station of  claim 13 , wherein the transmitter is further configured to:
 transmit a primary preamble that is common to multiple sectors and base stations; and   transmit a secondary preamble including the information indicating the sector identifier and the antenna port value.   
     
     
         15 . The base station of  claim 14 , wherein the pilot sequence is further based on a number of diversity antennas available for transmission. 
     
     
         16 . The base station of  claim 13 , further comprising:
 a plurality of antennas;   wherein the transmitter is further configured to transmit the pilot sequence via the plurality of antennas.   
     
     
         17 . The base station of  claim 13 , wherein the pilot sequence and the location of the pilot sequence are predictable based on the sector identifier and on the antenna port value. 
     
     
         18 . The base station of  claim 14 , wherein the secondary preamble is based on a Zadoff Chu sequence selected from a family of Zadoff Chu sequences. 
     
     
         19 . A subscriber station of a wireless communication network, the subscriber station comprising:
 a receiver configured to:
 receive a preamble including information indicating a sector identifier and an antenna port value; and 
 receive a pilot sequence, wherein the pilot sequence and the location of the pilot sequence are based on the sector identifier and on the antenna port value. 
   
     
     
         20 . The subscriber station of  claim 19 , wherein the receiver is further configured to:
 receive a primary preamble that is common to multiple sectors and base stations; and   receive a secondary preamble including information indicating the sector identifier and the antenna port value.   
     
     
         21 . The subscriber station of  claim 20 , wherein the pilot sequence is further based on a number of diversity antennas. 
     
     
         22 . The subscriber station of  claim 19 , further comprising:
 a plurality of antennas;   wherein the receiver is further configured to receive the pilot sequence via the plurality of antennas.   
     
     
         23 . The subscriber station of  claim 19 , further comprising:
 a processor configured to predict the pilot sequence and the location of the pilot sequence based on the sector identifier and on the antenna port value.   
     
     
         24 . The subscriber station of  claim 20 , wherein the secondary preamble is based on a Zadoff Chu sequence selected from a family of Zadoff Chu sequences.