Unsigned The propagation time from the receive antenna to phyRxRmarkerOffset Integer the internal receiver timestamp. The units of this are defined in 10.4.1. The PD subtracts this offset from its internal receive timestamp to get the reported RxRangingCounter value. Boolean READ Read only value indicating whether the PD is able macRngAckRrtiSupport ONLY to generate an RRTI IE within the standard ACK and insert it into a ranging ACK response time frame. Boolean When set the PD MAC shall automatically generate macRngAckRrtiEnable and insert an RRTI IE in a ranging ACK frame, where the RFRAME being acknowledged carried an RRRT IE and where macRngAckRrtiSupport indicates that the PD is capable of doing this. Unsigned READ This is a read only reporting the minimum RX macRngMinRrtiTime Integer ONLY to TX response time that the PD supports for inserting an RRTI IE into a MAC data frame. The units of this are defined in 10.4.1. A value of zero shall indicate that the PD cannot support RRTI insertion, i.e. so the upper layers know to employ an RRTD IE in the ranging exchanges. Unsigned This sets the desired RX-to-TX response time for macRngRrtiTime Integer the PD to use when inserting an RRTI IE into a MAC data frame. The units of this are defined in 10.4.1. The value set should take account of the and any upper layer delays in macRngMinRrtiTime initiating transmission, be reflected in the preferred response time indicated via RPRT IE exchanges. A (informative) The mathematics of two-way ranging Single-sided two-way ranging error due to clock offset With reference to Figure 7, the times and are measured independently by device A and B using Tround Treply their respective the local clocks, which have some clock offset error and from their nominal frequency. eA eB As a result is then actually: Tprop And, the in the range estimate equation (given in 2.3.2) is: Or:
phyRxRmarkerOffset Unsigned Integer The propagation time from the receive antenna to the internal receiver timestamp. The units of this are defined in 10.4.1. The PD subtracts this offset from its internal receive timestamp to get the reported RxRangingCounter value. macRngAckRrtiSupport Boolean READ ONLY Read only value indicating whether the PD is able to generate an RRTI IE within the standard ACK response time and insert it into a ranging ACK frame. macRngAckRrtiEnable Boolean When set the PD MAC shall automatically generate and insert an RRTI IE in a ranging ACK frame, where the RFRAME being acknowledged carried an RRRT IE and where macRngAckRrtiSupport indicates that the PD is capable of doing this. macRngMinRrtiTime Unsigned Integer READ ONLY This is a read only reporting the minimum RX to TX response time that the PD supports for inserting an RRTI IE into a MAC data frame. The units of this are defined in 10.4.1. A value of zero shall indicate that the PD cannot support RRTI insertion, i.e. so the upper layers know to employ an RRTD IE in the ranging exchanges. macRngRrtiTime Unsigned Integer This sets the desired RX-to-TX response time for the PD to use when inserting an RRTI IE into a MAC data frame. The units of this are defined in 10.4.1. The value set should take account of the macRngMinRrtiTime and any upper layer delays in initiating transmission, be reflected in the preferred response time indicated via RPRT IE exchanges. A (informative) The mathematics of two-way ranging Single-sided two-way ranging error due to clock offset With reference to Figure 7, the times Tround and Treply are measured independently by device A and B using their respective the local clocks, which have some clock offset error eA and eB from their nominal frequency. As a result Tprop is then actually: And, the in the range estimate equation (given in 2.3.2) is: Or:
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