Dynamic resource unit allocation for wireless local-area networks (WLANs)
地域：
CA
CA Santa Clara
摘要
Methods, apparatuses, and computer readable media for dynamic resource unit allocation for wireless local-area networks (WLANs) include an apparatus of an access point (AP) including processing circuitry configured to determine a group of stations (STAs) and first RUs for uplink (UL) multi-user (MU) orthogonal frequency division multiple-access (OFDMA) transmissions. The processing circuitry is further configured to transmit a trigger frame (TF) including indications of the determined first RUs for the group of STAs to transmit trigger-based (TB) physical layer (PHY) protocol data unit (PPDUs) (TB PPDUs) in response to the TF. The processing circuitry may be further configured to in response to a STA not responding to the TF, determine the STA as being inactive, and reallocate to active STAs RUs of inactive STAs, and transmit a second TF to the group of STAs that are active.
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Embodiments pertain to wireless networks and wireless communications. Some embodiments relate to wireless local area networks (WLANs) and Wi-Fi networks including networks operating in accordance with the IEEE 802.11 family of standards. Some embodiments relate to dynamic resource unit (RU) allocation for wireless local-area network (WLANs).
Efficient use of the resources of a wireless local-area network (WLAN) is important to provide bandwidth and acceptable response times to the users of the WLAN. However, often there are many devices trying to share the same resources and some devices may be limited by the communication protocol they use or by their hardware bandwidth. Moreover, wireless devices may need to operate with both newer protocols and with legacy device protocols.
The present disclosure is illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements and in which:
權利要求
What is claimed is:1. An apparatus of an access point (AP), the apparatus comprising memory; and processing circuitry coupled to the memory, the processing circuitry configured to:determine a group of stations (STAs) for uplink (UL) multi-user (MU) orthogonal frequency division multiple-access (OFDMA) transmissions; determine first RUs for the group of STAs; indicate all the STAs of the group of STAs as active; encode for transmission a trigger frame (TF), the trigger frame (TF) comprising an indication of an uplink (UL) bandwidth and indications of the determined first RUs for the group of STAs to transmit trigger-based (TB) physical layer (PHY) protocol data unit (PPDUs)(TB PPDUs) in response to the TF; configure the AP to transmit the TF; decode TB PPDUs from the group of STAs in accordance with the determined first RUs; in response to a STA not responding to the TV, determine the STA as being inactive; determine second RUs for the STAs of the group of STAs that are active, wherein active STAs of the group of STAs keep their RUs from the determined first RUs, and wherein RUs of inactive STAs are reallocated to active STAs, wherein the RUs of inactive STAs are allocated to active STAs with RUs nearer a center of the UL bandwidth before active STAs with RUs nearer edges of the UL bandwidth; and encode for transmission a second TF, the second TF comprising the indication of the UL bandwidth and indications of the determined second RUs for the group of STAs that are active to transmit TB PPDUs in response to the second TF. 2. The apparatus of claim 1 , wherein the processing circuitry is further configured to:in response to a STA responding to the TF with an indication that the STA no longer support TB PPDUs, determine the STA as being inactive. 3. The apparatus of claim 1 , wherein the processing circuitry is further configured to:determine first RUs for the group of STAs based on reducing interference among the STAs of the group of STAs. 4. The apparatus of claim 1 , wherein the second TF refrains from including STAs that are not part of the group of STAs. 5. The apparatus of claim 1 , wherein the UL bandwidth is one of the following group: 20 MHz, 40 MHz, 80 MHz, 160 MHz, 80+80 MHz, 80 MHz+160 MHz, 320 MHz, 160+160 MHz, and wherein an RU of the RU is one of the following group: 26-tone, 52-tone, 106-tone, 242-tone, 484-tone, 996-ton, and 2x996 tone. 6. The apparatus of claim 1 , wherein the processing circuitry is further configured to:in response to a RU of an inactive STA being reallocated to an active STA, determine a new RU for the active STA as being a combination of the RU of the inactive STA plus the RU active STA. 7. The apparatus of claim 1 , wherein the processing circuitry is further configured to:exchange frames with the STAs, the STAs including the group of STAs and additional STAs; determine interference characteristics of the STAs based on the exchanged frames; and determine the group of STAs based on the interference characteristics, wherein the group of STAs are selected to reduce interference among the group of STA. 8. The apparatus of claim 1 , wherein the processing circuitry is further configured to:configure the AP to transmit the second TF; decode TB PPDUs from the group of STAs that are active in accordance with the determined second RUs; and in response to a STA not responding to the TF, determine the STA as being inactive. 9. The apparatus of claim 1 , wherein an RUs of inactive STAs are not reallocated to active STAs when a combination of a corresponding RU of an inactive STA and a corresponding RU of an active STA are not combinable to form a new RU. 10. The apparatus of claim 9 , wherein the corresponding RU of the inactive STA and the corresponding RU of the active STA are not combinable to form the new RU when the frequency range of the corresponding RU of the inactive STA combined with the corresponding RU of the active STA is not a selectable RU for the UL bandwidth. 11. The apparatus of claim 1 , wherein the first TF and the second TF further comprise: an identification (ID) subfield, a modulation and coding scheme (MCS) subfield, a received signal strength indication (RSSI) subfield, a trigger type subfield, a transmit power (TP) subfield, and a spatial stream subfield. 12. The apparatus of claim 1 , wherein the AP and the STAs are configured to operate in accordance with one or more of: Institute of Electrical and Electronic Engineering (IEEE) 802.11 HE, IEEE 802.11 EHT, and IEEE 802.11. 13. The apparatus of claim 2 further comprising: mixer circuitry to downconvert RF signals to baseband signals; and synthesizer circuitry, synthesizer circuitry comprising one of a fractional-N synthesizer or a fractional N/N+1 synthesizer, the synthesizer circuitry configured to generate an output frequency for use by the mixer circuitry, wherein the processing circuitry is configured to decode the baseband signals, the baseband signals including the TB PPDUs. 14. The apparatus of claim 2 further comprising: mixer circuitry to down-convert RF signals to baseband signals; and synthesizer circuitry, the synthesizer circuitry comprising a delta-sigma synthesizer, the synthesizer circuitry configured to generate an output frequency for use by the mixer circuitry, wherein the processing circuitry is configured to decode the baseband signals, the baseband signals including the TB PPDUs. 15. A method performed by an apparatus of an access point (AP), the method comprising:determining a group of stations (STAs) for uplink (UL) multi-user (MU) orthogonal frequency division multiple-access (OFDMA) transmissions; determining first RUs for the group of STAs; indicating all the STAs of the group of STAs as active; encoding for transmission a trigger frame (TF), the trigger frame (TF) comprising an indication of an uplink (UL) bandwidth and indications of the determined first RUs for the group of STAs to transmit trigger-based (TB) physical layer (PHY) protocol data unit (PPDUs)(TB PPDUs) in response to the TF; configuring the AP to transmit the TF; decoding TB PPDUs from the group of STAs in accordance with the determined first RUs; in response to a STA not responding to the TF, determining the STA as being inactive; determining second RUs for the STAs of the group of STAs that are active, wherein active STAs of the group of STAs keep their RUs from the determined first RUs, and wherein RUs of inactive STAs are reallocated to active STAs, wherein the RUs of inactive STAs are allocated to active STAs with RUs nearer a center of the UL bandwidth before active STAs with RUs nearer edges of the UL bandwidth; and encoding for transmission a second TF, the second TF comprising the indication of the UL bandwidth and indications of the determined second RUs for the group of STAs that are active to transmit TB PPDUs in response to the second TF. 16. The method of claim 15 , further comprising:in response to a STA responding to the TF with an indication that the STA no longer support TB PPDUs, determining the STA as being inactive. 17. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of an apparatus of an access point (AP), the instructions to configure the one or more processors to:determine a group of stations (STAs) for uplink (UL) multi-user (MU) orthogonal frequency division multiple-access (OFDMA) transmissions; determine first RUs for the group of STAs; indicate all the STAs of the group of STAs as active; encode for transmission a trigger frame (TF), the trigger frame (TF) comprising an indication of an uplink (UL) bandwidth and indications of the determined first RUs for the group of STAs to transmit trigger-based (TB) physical layer (PHY) protocol data unit (PPDUs)(TB PPDUs) in response to the TF; configure the AP to transmit the TF; decode TB PPDUs from the group of STAs in accordance with the determined first RUs; in response to a STA not responding to the TF, determine the STA as being inactive; determine second RUs for the STAs of the group of STAs that are active, wherein active STAs of the group of STAs keep their RUs from the determined first RUs, and wherein RUs of inactive STAs are reallocated to active STAs, wherein the RUs of inactive STAs are allocated to active STAs with RUs nearer a center of the UL bandwidth before active STAs with RUs nearer edges of the UL bandwidth; and encode for transmission a second TF, the second TF comprising the indication of the UL bandwidth and indications of the determined second RUs for the group of STAs that are active to transmit TB PPDUs in response to the second TF. 18. The non-transitory computer-readable storage medium of claim 17 , wherein the instructions further configure the one or more processors to:in response to a STA responding to the TF with an indication that the STA no longer support TB PPDUs, determine the STA as being inactive. 19. The non-transitory computer-readable storage medium of claim 17 , wherein the instructions further configure the one or more processors to:determine first RUs for the group of STAs based on reducing interference among the STAs of the group of STAs. 20. The non-transitory computer-readable storage medium of claim 17 , wherein the second TF refrains from including STAs that are not part of the group of STAs.
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