METHOD AND SYSTEM FOR DETERMINING THE SPEED AND POSITION OF A MOBILE UNIT
First Claim
1. A method for determining a position, speed and direction of movement of a wireless transmit/receive unit (WTRU), the method comprising:
- the WTRU receiving from a network station a plurality of the transmitted directional beams, including beam identifying information for each of the received beams;
for each of the plurality of received beams, the WTRU measuring the respective received signal strength and storing respective beam identifying information data with respective measured received signal strength data; and
the WTRU transmitting to the network station stored beam identifying information data and received signal strength data for the plurality of received beams to thereby enable the network station to estimate the position, speed and direction of movement of the WTRU using beam identifying information data and received signal strength data for the plurality of received beams received from the WTRU.
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Accused Products
Abstract
Apparatus and methods are disclosed for estimating the position and velocity of mobile wireless transmit/receive units (WTRUs) in a wireless communication system. Network stations use directional communication beams to divide service areas into sectors to provide communication services to the WTRUs. A WTRU saves pertinent information such as sector ID, received power and time of reception of the several received signals. The collected information is sent to the network, where it is used to estimate the WTRU'"'"'s position, speed and direction of travel, which information can then be used to improve radio resource management.
67 Citations
22 Claims
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1. A method for determining a position, speed and direction of movement of a wireless transmit/receive unit (WTRU), the method comprising:
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the WTRU receiving from a network station a plurality of the transmitted directional beams, including beam identifying information for each of the received beams;
for each of the plurality of received beams, the WTRU measuring the respective received signal strength and storing respective beam identifying information data with respective measured received signal strength data; and
the WTRU transmitting to the network station stored beam identifying information data and received signal strength data for the plurality of received beams to thereby enable the network station to estimate the position, speed and direction of movement of the WTRU using beam identifying information data and received signal strength data for the plurality of received beams received from the WTRU. - View Dependent Claims (2, 3, 4, 5)
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6. A method for determining a position, speed and direction of movement of a wireless transmit/receive unit (WTRU), the method comprising:
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transmitting wireless communication signals from a network station in directional beams from a known location such that beams are from time to time transmitted to each area serviced by the network station, each beam including beam identifying information to thereby enable WTRUs to receive identified beams and measure and store respective received signal strength; and
receiving from a WTRU by the network station stored beam identifying information data and received signal strength data for the plurality of received beams; and
estimating the position, speed and direction of movement of the WTRU using beam identifying information data and received signal strength data for the plurality of received beams received from the WTRU. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A wireless transmit receive unit (WTRU) comprising:
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a receiver configured to receive from a network station a plurality of transmitted directional beams, including beam identifying information for each of the received beams;
a memory associated with said receiver;
said receiver configured to measure the respective received signal strength for each of the plurality of received beams and to storing respective beam identifying information data with respective measured received signal strength data in said memory; and
a transmitter configured to transmit to the network station stored beam identifying information data and received signal strength data for the plurality of received beams to thereby enable the network station to estimate the position, speed and direction of movement of the WTRU using beam identifying information data and received signal strength data for the plurality of received beams received from the WTRU. - View Dependent Claims (13, 14, 15, 16)
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17. A wireless transmit receive unit (WTRU) configured a network station for a wireless communication network comprising:
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a transmitter configured to transmit wireless communication signals in directional beams from a known location such that beams are from time to time transmitted to each area serviced by the WTRU, each beam including beam identifying information to thereby enable user WTRUs to receive identified beams and measure and store respective received signal strength; and
a receiver configured to receive from a user WTRU stored beam identifying information data and received signal strength data for a plurality of beams transmitted by the WTRU and received by the user WTRU; and
a processor configured to estimate the position, speed and direction of movement of the user WTRU using the beam identifying information data and received signal strength data for the plurality of beams received by the user WTRU. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification