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 Personal basic service set Control Point/Access Point (PCP/AP) apparatus comprising:
measurement request generation circuitry which, in operation, generates a measurement request message requesting measurement on each channel included in a first channel to a first station (STA) apparatus and a second STA apparatus, in a case of spatial sharing between an existing service period (SP) on a second channel involving a third STA apparatus and a fourth STA apparatus and a Candidate SP on the first channel including the second channel involving the first STA apparatus and the second STA apparatus, wherein the measurement request message includes a measurement configuration subfield for indicating a method of reporting results of concurrent measurements using a plurality of RX antenna configurations; and
transceiver circuitry which, in operation, transmits the measurement request message to the first STA apparatus and the second STA apparatus, wherein:
in case where a value of the measurement configuration subfield indicates a first method, the transceiver circuitry receives the results of the concurrent measurements using the plurality of RX antenna configurations per antenna configuration; and
in case where the value of the measurement configuration subfield indicates a second method, the transceiver circuitry receives an averaged results of the concurrent measurements using the plurality of RX antenna configurations.
2. The PCP/AP apparatus according to claim 1 , comprising:
a receiver that, in operation, receives one or more measurement results on each channel included in the first channel measured by the first STA apparatus and the second STA apparatus; and
scheduling circuitry which, in operation, determines whether or not to allocate the first STA apparatus and the second STA apparatus on the first channel based on the one or more measurement results.
3. The PCP/AP apparatus according to claim 2 , wherein the receiver, in operation, receives plural individually reported measurement results.
4. The PCP/AP apparatus according to claim 2 , wherein the receiver, in operation, receives an average of the measurement results.
5. The PCP/AP apparatus according to claim 1 , wherein the measurement request message includes measurement configuration information.
6. The PCP/AP apparatus according to claim 5 , wherein the measurement configuration information includes:
a requested measurement;
a measurement start time; and
a measurement duration.
7. The PCP/AP apparatus according to claim 6 , wherein the measurement configuration information includes:
a number of time blocks within the measurement duration;
a number of concurrent measurements to be performed using plural antenna configurations; and
a method for reporting results of plural concurrent measurements.
8. A method, comprising:
generating a measurement request message requesting measurement on each channel included in a first channel to a first station (STA) apparatus and a second STA apparatus, in a case of spatial sharing between an existing service period (SP) on a second channel involving a third STA apparatus and a fourth STA apparatus and a Candidate SP on the first channel including the second channel involving the first STA apparatus and the second STA apparatus, wherein the measurement request message includes a measurement configuration subfield for indicating a method of reporting results of concurrent measurements using a plurality of RX antenna configurations; and
transmitting the measurement request message to the first STA apparatus and the second STA apparatus, wherein:
in case where a value of the measurement configuration subfield indicates a first method, the method comprising receiving the results of the concurrent measurements using the plurality of RX antenna configurations per antenna configuration; and
in case where the value of the measurement configuration subfield indicates a second method, the method comprising receiving an averaged results of the concurrent measurements using the plurality of RX antenna configurations.
9. The method according to claim 8 , comprising:
receiving one or more measurement results on each channel included in the first channel measured by the first STA apparatus and the second STA apparatus; and
determining whether or not to allocate the first STA apparatus and the second STA apparatus on the first channel based on the one or more measurement results.
10. The method according to claim 9 , wherein receiving the one or more measurement results on each channel includes receiving plural individually reported measurement results.
11. The method according to claim 9 , wherein receiving the one or more measurement results on each channel includes receiving an average of the measurement results.
12. The method according to claim 8 , wherein the measurement request message includes measurement configuration information.
13. The method according to claim 12 , wherein the measurement configuration information includes:
a requested measurement;
a measurement start time; and
a measurement duration.
14. The method according to claim 13 , wherein the measurement configuration information includes:
a number of time blocks within the measurement duration;
a number of concurrent measurements to be performed using plural antenna configurations; and
a method for reporting results of plural concurrent measurements.
15. A station (STA) apparatus comprising:
a receiver that, in operation, receives a measurement request message from a Personal basic service set Control Point/Access Point (PCP/AP) apparatus;
a Physical Layer (PHY) processor that, in operation, performs measurement on each channel included in a first channel, including a second channel, with a communication partner involving in a candidate service period (SP) on the first channel according to the measurement request message; and
a transmitter that, in operation, transmits results of measurements to the PCP/AP, wherein
the measurement request message is a message requesting measurement on each channel included in the first channel, in a case of spatial sharing between an existing SP on the second channel involving a first STA apparatus and a second STA apparatus and the Candidate SP, and the measurement request message includes a measurement configuration subfield for indicating a method of reporting results of concurrent measurements using a plurality of RX antenna configurations, wherein:
in case where a value of the measurement configuration subfield indicates a first method, the transmitter transmits the results of the concurrent measurements using the plurality of RX antenna configurations per antenna configuration, and
in case where the value of the measurement configuration subfield indicates a second method, the transmitter transmits an averaged results of the concurrent measurements using the plurality of RX antenna configurations.
16. The STA apparatus according to claim 15 , wherein the measurement request message includes measurement configuration information.
17. The STA apparatus according to claim 16 , wherein the measurement configuration information
a requested measurement;
a measurement start time; and
a measurement duration.
18. A method comprising:
receiving a measurement request message from a Personal basic service set Control Point/Access Point (PCP/AP) apparatus;
performing measurement on each channel included in a first channel, including a second channel, with a communication partner involving in a candidate service period (SP) on the first channel according to the measurement request message; and
transmitting results of measurements to the PCP/AP, wherein
the measurement request message is a message requesting measurement on each channel included in the first channel, in a case of spatial sharing between an existing SP on the second channel involving a first STA apparatus and a second STA apparatus and the Candidate SP, and the measurement request message includes a measurement configuration subfield for indicating a method of reporting results of concurrent measurements using a plurality of RX antenna configurations, wherein:
in case where a value of the measurement configuration subfield indicates a first method, the transmitting includes transmitting the results of the concurrent measurements using the plurality of RX antenna configurations per antenna configuration; and
in case where the value of the measurement configuration subfield indicates a second method, the transmitting includes transmitting an averaged results of the concurrent measurements using the plurality of RX antenna configurations.
19. The method according to claim 18 , wherein the measurement request message includes measurement configuration information.
20. The method according to claim 19 , wherein the measurement configuration information includes:
a requested measurement;
a measurement start time; and
a measurement duration.