# US 10,375,702 B2 · Method and apparatus for guided adaptive spatial reuse in wireless communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,375,702 B2 - Document ID: US10375702B2 - Status: Granted - Kind: B2 - Application number: 15/269,614 - Filed: 2016-09-19 - Published: 2017-03-23 - Granted: 2019-08-06 - Earliest claimed: 2015-09-18 - Assignees: Mediatek Inc. - Applicants: Mediatek Inc. - Inventors: James June-Ming Wang - Web page: https://patentgrep.com/patent/US10375702B2 ## CPC - H04W 72/542: using measured or perceived quality - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 52/243: {taking into account interferences} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Aspects of the disclosure provide an apparatus for wireless communication. The apparatus includes a transceiver and a processing circuit. The transceiver is configured to transmit and receive wireless signals. The processing circuit is configured to receive guiding information for spatial re-use that is carried by a wireless signal transmitted from another apparatus in a same service set with the apparatus, determine wireless information surrounding the apparatus based on the received wireless signals, determine spatial re-use parameters following the guiding information and based on the wireless information surrounding the apparatus, and control the transceiver based on the determined spatial re-use parameters to control transmission concurrently with ongoing wireless communication in one or more other service sets that overlap with the service set. ## Claims ### Claim 1 An apparatus for wireless communication, comprising: a transceiver configured to transmit and receive wireless signals; and a processing circuit configured to: receive guiding information for spatial re-use that is carried by a wireless signal transmitted from another apparatus in a present service set with the apparatus, the guiding information including a range of a signal preamble detection threshold or a reference value of a transmit power level for performing transmission by the apparatus; receive power information from another service set corresponding to ongoing wireless communication in the another service set; determine the transmit power level based on the received power information corresponding to the ongoing wireless communication in the another service set; determine the signal preamble detection threshold following the guiding information and based on the determined transmit power level; and control the transceiver based on the determined signal preamble detection threshold and the determined transmit power level to control the transmission concurrently with the ongoing wireless communication in the another service set, wherein the signal preamble detection threshold is used to discard received signals from at least one service set that is different from the present service set and with a strength below the signal preamble detection threshold. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the processing circuit is configured to: determine a relationship between the signal preamble detection threshold and the transmit power level based on the guiding information; and determine the signal preamble detection threshold based on the determined relationship and the determined transmit power level. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the processing circuit is configured to receive the guiding information that includes a minimum value for the signal preamble detection threshold, a maximum value for the signal preamble detection threshold, and the reference value for the transmit power level. ### Claim 4 (depends on 3) The apparatus of claim 3, wherein the processing circuit is configured to: determine the relationship as a proportional relationship based on the maximum value, the minimum value, and the reference value. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the another apparatus corresponds to an access point (AP) of the present service set, the AP of the present service set being configured to determine and vary the guiding information based on wireless communication of the present service set and wireless communication of the at least one service set that is different from the present service set. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the another service set is an overlapping basic service set (OBSS) to the present service set. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the power information corresponding to the ongoing wireless communication in the another service set includes: a transmit power used by a first apparatus in the another service set to transmit a particular wireless signal, and a received signal power of the particular wireless signal received by a second apparatus in the another service set. ### Claim 8 A method of wireless communication, comprising: receiving, by a processing circuit in a device, guiding information for spatial re-use that is carried by a wireless signal transmitted from another device in a present service set with the device, the guiding information including a range of a signal preamble detection threshold or a reference value of a transmit power level for performing transmission by the apparatus; receiving power information from another service set corresponding to ongoing wireless communication in the another service set; determining the transmit power level based on the received power information corresponding to the ongoing wireless communication in the another service set; determining the signal preamble detection threshold following the guiding information and based on the determined transmit power level; and controlling a transceiver in the device based on the determined signal preamble detection threshold and the determined transmit power level to control the transmission concurrently with the ongoing wireless communication in the another service set, wherein the signal preamble detection threshold is used to discard received signals from at least one service set that is different from the present service set and with a strength below the signal preamble detection threshold. ### Claim 9 (depends on 8) The method of claim 8, further comprising: determining a relationship between the signal preamble detection threshold and the transmit power level based on the guiding information; and determining the signal preamble detection threshold based on the determined relationship and the determined transmit power level. ### Claim 10 (depends on 9) The method of claim 9, wherein the guiding information includes a minimum value for the signal preamble detection threshold, a maximum value for the signal preamble detection threshold, and the reference value for the transmit power level. ### Claim 11 (depends on 10) The method of claim 10, further comprising: determining the relationship as a proportional relationship based on the maximum value, the minimum value, and the reference value. ### Claim 12 (depends on 8) The method of claim 8, wherein the another device corresponds to an access point (AP) of the present service set, the AP of the present service set being configured to determine and vary the guiding information based on wireless communication of the present service set and wireless communication of the at least one service set that is different from the present service set. ### Claim 13 A non-transitory computer readable medium storing program instructions for causing a processor in a device to execute operations for wireless communication, the operations comprising: receiving guiding information for spatial re-use that is carried by a wireless signal transmitted from another device in a present service set with the device, the guiding information including a range of a signal preamble detection threshold or a reference value of a transmit power level for performing transmission by the apparatus; receiving power information from another service set corresponding to ongoing wireless communication in the another service set; determining the transmit power level based on the received power information corresponding to the ongoing wireless communication in the another service set; determining the signal preamble detection threshold following the guiding information and based on the determined transmit power level; and controlling a transceiver in the device based on the determined signal preamble detection threshold and the determined transmit power level to control the transmission concurrently with the ongoing wireless communication in the another service set, wherein the signal preamble detection threshold is used to discard received signals from at least one service set that is different from the present service set and with a strength below the signal preamble detection threshold. ### Claim 14 (depends on 13) The non-transitory computer readable medium of claim 13, wherein the operations further comprise: determining a relationship between the signal preamble detection threshold and the transmit power level based on the guiding information; and determining the signal preamble detection threshold based on the determined relationship and the determined transmit power level. ### Claim 15 (depends on 14) The non-transitory computer readable medium of claim 14, wherein the guiding information includes a minimum value for the signal preamble detection threshold, a maximum value for the signal preamble detection threshold, and the reference value for the transmit power level. ### Claim 16 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the operations further comprise: determining the relationship as a proportional relationship based on the maximum value, the minimum value, and the reference value.