IEEE Std 802.15.4s:2018 pdf download.IEEE Standard for Low-Rate Wireless Networks-Amendment 6: Enabling Spectrum Resource Measurement Capability.
3. Definitions, acronyms, and abbreviations
3.2 Acronyms and abbreviations
Replace definition for TPC with new definitio,i as followings:
TPC transmit power control
ANPI average noise power indicator
IPI idle power indicator
RCPI received channel power indicator
RSNI received signal noise indicator
SRM spectrum resource measurement
TBPC turbo product code
5. General description
5.7 Functional overview
Insert new sublcause 5. 7.7 after 5.7.6 as follows:
5.7.7 Enabling spectrum resource measurement capability
SRM enables devices to gather a variety of data for evaluating radio link performance, which contributes to the selection of the best available PAN for joining and efficient radio spcctnlrn usage for the selected PAN. As shown in Figure 5-10, the device obtains radio link characteristics by local measurements or via exchange of information with other devices via reporting messages all the way to the PAN coordinator. The PAN coordinator is also able to disseminate information to the devices in the PAN, such as the maximum transmit power, by which the receiving devices can set their radio parameters in a unified manner. SRM data is also made available to the upper protocol layers, which is able to use it for controlling the lower layer or their applications.
The measurement of SRM metrics are conducted only when the device is capable of doing it. In the case of LE transmission and reception, for example, even if the requesting dcvicc requests the peer device to measure SRM metrics for a specific duration of time, the requested device can do it only when the receiver is enabled.
In the case of TSCH, there arc three modes of measurement operation.
Full measurement: the device conducts the measurement for a specified duration of time regardless of the channel.
Channel-specific measurement: the device coducts the measurement only when it is on the specifed channel within the hopping sequence. The device puts the measured data together and calculates the performance metrics. The obtained result is the characteristics of the specified channel.
Link-specific measurement: the device conducts the measurement only when it is on a specific link, which is represented by macLinkllandle defined in Table 8-85. The device puts the measure data together and calculates the performance metrics. The obtained result is the characteristics of the specified link.
6. MAC functional descriptions
Iiiseri new si,hc!ause 6.17 after 6.16 u. fillow.s:
6.17 Spectrum resource measurement (SRM)
SRM specifies the following functions and procedures in order to effectively operate wireless systems that could have heavy interferences within or outside the network.IEEE Std 802.15.4s pdf download.