Management frames for rate adaptation by enhanced directional multi-gigabit (EDMG) stations in millimeter wave (mmWave) networks
View Patent ↗Embodiments of an enhanced directional multi-gigabit (EDMG) station (STA), access point (AP), and method of communication are generally described herein. The EDMG STA may receive, from the AP, a Link Measurement Request Frame that includes a request for information for time division duplexing (TDD) rate adaptation. The EDMG STA may transmit a Link Measurement Response Frame that includes a Directional Multi Gigabit (DMG) Link Margin element that includes a Rate Adaption Control parameter. The DMG Link Margin element may be configurable to include one or more optional fields for the TDD rate adaptation and transmit power control. The Rate Adaptation Control parameter may indicate: a number of space time streams (STSs) for which information is included in the DMG Link Margin element; and whether the DMG Link Margin element includes the one or more optional fields.
1. An apparatus of an enhanced directional multi-gigabit (EDMG) station (STA), the apparatus comprising: processing circuitry; and memory, the processing circuitry configured to:
encode an announce frame for transmission, the announce frame encoded to include a time division duplexing (TDD) slot schedule element, and a TDD bandwidth request element, the Announce Frame to indicate scheduling information for TDD operation in a scheduling period (SP) that includes one or more TDD intervals, wherein each TDD interval includes one or more TDD slots,
wherein the TDD Slot Schedule element is configurable to include a Bitmap and Access Type Schedule field, the Bitmap and Access Type Schedule field indicating a TDD slot type of a corresponding TDD slot of a service period (SP) and an access permission of the corresponding TDD slot,
wherein the TDD slot type indicates whether the corresponding TDD slot is unassigned, is a transmit (TX) slot, is a receive (RX) slot, or is unavailable for the EDMG STA,
wherein processing circuitry is configured to cause the EDMG STA to refrain from transmitting in a TDD slot that is indicated to be either unassigned or unavailable,
wherein the TDD bandwidth request element is encoded to indicate a bandwidth reservation request for uplink transmissions by the EDMG STA during one or more of the SPs; and
wherein the processing circuitry is configured to encode, an uplink transmission within a TDD slot of one of the SPs, the TDD slot indicated as a TX slot by the corresponding TDD slot type, the uplink transmission for transmission in accordance with the fields included in the TDD bandwidth request element.
2. The apparatus of claim 1 wherein the announce frame is further encoded to include a DMG link margin element, the DMG link margin element to include one or more optional fields for TDD rate adaptation and transmit power control.
3. The apparatus of claim 1 wherein the TDD bandwidth request element comprises a transmit Modulation and Coding Scheme (MCS) field that indicates a recommended MCS for the uplink transmission.
4. The apparatus of claim 3 wherein the TDD bandwidth request element further comprises:
a Requested TX Percentage field that indicates a requested percentage of airtime for the uplink transmissions.
5. The apparatus of claim 3 wherein the TDD bandwidth request element further comprises:
a Number of Queue Parameters field that indicates a number of Queue Parameters subfields that are included in the TDD Bandwidth Request element; and
one or more Queue Parameters subfields,
wherein each of the one or more Queue Parameters subfields includes:
a traffic identifier (TID) subfield; and
a Queue Size subfield that indicates an amount of queued traffic at the EDMG STA for the TID indicated by the TID subfield.
6. The apparatus of claim 3 wherein each queue parameter field is encoded to include a Traffic Arrival Rate subfield that indicates an arrival rate of traffic at the EDMG STA since a previous reporting event.
7. The apparatus of claim 1 wherein the memory is configured to store the TDD slot schedule element.
8. The apparatus of claim 1 further comprising: mixer circuitry to upconvert baseband signals to RF signals; and
synthesizer circuitry, the synthesizer circuitry comprising 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 encode baseband signals, the baseband signals that comprise the announce frame.
9. The apparatus of claim 1 further comprising: mixer circuitry to upconvert baseband signals to RF 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 encode the baseband signals, the baseband signals that comprise the announce frame.