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US 2016/0241373 A1Published application
Methods and systems for ranging protocol
AssigneeQUALCOMM Incorporated
InventorsSubash Marri Sridhar, Carlos Aldana
Life of this patent
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Abstract
Disclosed are methods and systems for obtaining measurements of a range between devices in an exchange messages. In particular, described are techniques for transmitting messages between or among devices to share computed parameters indicative of ranges between devices. In particular implementations, shared computed parameters indicative of ranges between or among devices may enable computation of estimated locations of one or more of devices.
Claims36
At an initiating wireless station (STA), a method comprising:
- transmitting a first fine timing measurement (FTM) request message requesting one or more bursts of FTM messages from a responding STA, the first FTM request message comprising at least one field specifying a minimum time offset between transmission of an initial FTM message from the responding STA and transmission of a second FTM request message from the initiating STA preceding at least an initial burst of the requested one or more bursts of FTM messages;
- and
- receiving the initial FTM message transmitted by the responding STA in response to the first FTM request message.
An initiating wireless station (STA), comprising:
- a receiver to receive messages from a wireless communication network;
- a transmitter to transmit messages to the wireless communication network;
- and
- one or more processors configured to:
- initiate transmission of a first fine timing measurement (FTM) request message through the transmitter requesting one or more bursts of FTM messages from a responding STA, the first FTM request message comprising at least one field specifying a minimum time offset between transmission of an initial FTM message from the responding STA and transmission of a second FTM request message from the initiating STA preceding at least an initial burst of the requested one or more bursts of FTM messages;
- and
- obtain the initial FTM message transmitted by the responding STA in response to the first FTM request message received at the receiver.
4 more elements
A method comprising, at a responding wireless station (STA):
- receiving a first fine timing measurement (FTM) request message from an initiating STA, the first FTM request message requesting one or more bursts of FTM messages and comprising one or more fields specifying a minimum time offset between transmission of an initial FTM message from the responding STA and transmission of a subsequent FTM request message from the initiating STA preceding at least an initial burst of the requested one or more bursts of FTM messages;
- and
- transmitting the initial FTM message in response to the first FTM request message.
A responding wireless station (STA), comprising:
- a receiver to receive messages from a wireless communication network;
- a transmitter to transmit messages to the wireless communication network;
- and
- one or more processors configured to:
- obtain a first fine timing measurement (FTM) request message received at the receiver from an initiating STA, the first FTM request message requesting one or more bursts of FTM messages and comprising one or more fields specifying a minimum time offset between transmission of an initial FTM message from the responding STA and transmission of a subsequent FTM request message from the initiating STA preceding at least an initial burst of the requested one or more bursts of FTM messages;
- and
- initiate transmission of the initial FTM message through the transmitter in response to the first FTM request message.
4 more elements
A non-transitory storage medium comprising computer readable instructions stored thereon which are executable by one or more processors of an initiating wireless station (STA) to:
- initiate transmission of a first fine timing measurement (FTM) request message requesting one or more bursts of FTM messages from a responding STA, the first FTM request message comprising at least one field specifying a minimum time offset between transmission of an initial FTM message from the responding STA and transmission of a second FTM request message from the initiating STA preceding at least an initial burst of the requested one or more bursts of FTM messages;
- and
- obtaining the initial FTM message received at the initiating STA and transmitted by the responding STA in response to the first FTM request message.
An initiating wireless station (STA) comprising:
- means for transmitting a first fine timing measurement (FTM) request message requesting one or more bursts of FTM messages from a responding STA, the first FTM request message comprising at least one field specifying a minimum time offset between transmission of an initial FTM message from the responding STA and transmission of a second FTM request message from the initiating STA preceding at least an initial burst of the requested one or more bursts of FTM messages;
- and
- means for receiving the initial FTM message transmitted by the responding STA in response to the first FTM request message.
A non-transitory storage medium comprising computer readable instructions stored thereon which are executable by one or more processors at a responding wireless station (STA) to:
- obtain a first fine timing measurement (FTM) request message received from an initiating STA, the first FTM request message requesting one or more bursts of FTM messages and comprising one or more fields specifying a minimum time offset between transmission of an initial FTM message from the responding STA and transmission of a subsequent FTM request message from the initiating STA preceding at least an initial burst of the requested one or more bursts of FTM messages;
- and
- initiate transmission of the initial FTM message in response to the first FTM request message.
A responding wireless station (STA), comprising:
- means for receiving a first fine timing measurement (FTM) request message from an initiating STA, the first FTM request message requesting one or more bursts of FTM messages and comprising one or more fields specifying a minimum time offset between transmission of an initial FTM message from the responding STA and transmission of a subsequent FTM request message from the initiating STA preceding at least an initial burst of the requested one or more bursts of FTM messages;
- and
- means for transmitting the initial FTM message in response to the first FTM request message.
Dependencies are inferred from the claim text.