Method of spatial sharing in wireless communications system
A method for performing spatial sharing between an existing SP and a candidate SP includes transmitting a first measurement request to an STA involved in the candidate SP carrying measurement configuration information for measurement over primary tier 1 channel of a tier 2 channel. The measurement configuration information includes the method that is to be used for the requested measurement, the measurement start time, the measurement duration, the number of time blocks within the measurement duration, the number of concurrent measurements to be performed using plural RX antenna configurations, and the method for reporting results of plural concurrent measurements, wherein the duration of each time block is the same.
1. A method for performing spatial sharing via Personal basic service set Control Point/Access Point (PCP/AP) between an existing Service Period (SP) and a candidate SP, comprising:
generating first measurement configuration information used for a first measurement request in the PCP/AP,
the first measurement configuration information including:
a first requested measurement;
a first measurement start time;
a first measurement duration;
a first number of first time blocks within the first measurement duration;
a first number of concurrent measurements to be performed using plural RX antenna configurations; and
a first method for reporting results of plural concurrent measurements,
wherein each first time block within the first measurement duration has the same time; and the method includes transmitting the first measurement request, which carries the first measurement configuration information for measurement over a primary tier 1 channel of a tier 2 channel, to a station (STA) involved in the candidate SP.
2. The method according to claim 1 , further comprising:
generating second measurement configuration information used for a second measurement request in the PCP/AP,
the second measurement configuration information including:
a second requested measurement that is identical to the first requested measurement;
a second measurement start time;
a second measurement duration that is identical to the first measurement duration;
a second number of second time blocks within the second measurement duration that is identical to the first number of the first time blocks;
a second number of concurrent measurements to be performed using plural receiving (RX) antenna configurations that is identical to the first number of concurrent measurements; and
a second method for reporting results of plural concurrent measurements that is identical to the first method for reporting results,
wherein each second time block within the second measurement duration has the same time;
the method includes transmitting a second measurement request to the STA carrying measurement configuration information for measurement either over a secondary tier 1 channel of the tier 2 channel or over the tier 2 channel,
wherein the second measurement start time indicated in the second measurement request is not smaller than time Tcs plus the first measurement start time indicated in the first measurement request plus the first measurement duration indicated in the first measurement request, and
wherein time Tcs corresponds to a reconfiguring period of the STA by switching channel, which is either predetermined or configurable.
3. The method according to claim 1 , wherein
in the STA, after receiving the first measurement request, the STA performs plural measurements over the primary tier 1 channel concurrently using plural RX antenna configurations, respectively, according to the first measurement configuration information contained in the first measurement request.
4. The method according to claim 1 , wherein
in the STA, after receiving the second measurement request, the STA performs plural measurements either over a secondary tier 1 channel of the tier 2 channel or over the tier 2 channel concurrently using plural RX antenna configurations, respectively, according to the second measurement configuration information contained in the second measurement request.
5. The method according to claim 1 , further comprising, in the PCP/AP,
receiving a first measurement report from the STA carrying results of the plural concurrent measurements over the primary tier 1 channel, which are reported according to the first measurement configuration information indicated in the first measurement request.
6. The method according to claim 5 , wherein
results of plural concurrent measurements over the primary tier 1 channel are individually reported in the first measurement report.
7. The method according to claim 5 , wherein
the average of results of plural concurrent measurements over the primary tier 1 channel is reported in the first measurement report.
8. The method according to claim 5 , wherein
the weighted average of results of plural concurrent measurements over the primary tier 1 channel is reported in the first measurement report.
9. The method according to claim 1 , further comprising:
receiving a second measurement report from the STA carrying results of plural concurrent measurements either over a secondary tier 1 channel of the tier 2 channel or over the tier 2 channel, which are reported according to the second measurement configuration information contained in the second measurement request; and
decision-making on spatial sharing between the existing SP and the candidate SP according to received result for first measurement and second measurement of plural concurrent measurements in both the first measurement report and the second measurement report.