TWI572160B - Uplink or downlink mu-mimo apparatus and method - Google Patents

Description

Uplink or downlink multi-user multiple input multiple output (MU-MIMO) devices and method Field of invention

The examples are generally related to systems and methods for supporting multiple user multiple input, multiple output (MU-MIMO) or frequency multiplexing for downlink (DL) and uplink (UL). Some embodiments relate to high efficiency wireless (HE-W) local area network (LAN) or high efficiency Wi-Fi (HEW) and Institute of Electrical and Electronics Engineers (IEEE) 802.11ax standards. Some embodiments are related to the 802.11ac standard.

Background of the invention

MU-MIMO is a spatial multiplexed form in which different spatial streams are directed to or derived from different users. In MU-MIMO, a plurality of wireless devices (e.g., access points (Ap)) and transmitter devices are coupled via an antenna. The MU-MIMO plurality of transmitters can transmit respective signals and the plurality of receivers can receive the respective signals simultaneously and in the same frequency band.

Summary of invention

According to an embodiment of the present invention, a wireless device is specifically proposed. It includes a transceiver configured to perform the following actions: transmitting a sequence frame (SCH) to a plurality of stations (STA) via a plurality of spatial streams to schedule an uplink (UL) Transmitting, in response to data received from the plurality of STAs, transmitting a block acknowledgment (BA) to the plurality of STAs via a plurality of spatial streams.

100‧‧‧ system

102‧‧‧Wireless devices

104A, 104B‧‧‧ Platform (STA)

202A-D‧‧‧Information

204A‧‧‧ Block Confirmation (BA)

206‧‧‧Intermediary space between arbitration frames

208‧‧‧Relay frame (SCH)

210‧‧‧Multiple user block confirmation

300‧‧‧DL operation

302A-B‧‧‧Information

304A-B‧‧‧ Block Confirmation (BA)

306‧‧‧ Block Confirmation Request Frame

400‧‧‧MU-MIMO Protocol

402‧‧‧ Scheduling Frame (SCH)

404‧‧‧Number of random times

406A-B‧‧‧Information

408A-B‧‧‧ Block Confirmation (BA)

410A-B‧‧‧Information

500‧‧‧Communication Agreement

502‧‧‧DL scheduling frame

504‧‧‧ Random compensation time

506A-B‧‧‧Information

508B‧‧‧ Block Confirmation

600‧‧‧Communication Agreement

602‧‧‧UL Scheduling Frame

604A-B‧‧‧Information

606‧‧‧Multiple user block confirmation

700‧‧‧Communication Agreement

702A-B‧‧‧Relay frame

704A-B‧‧‧Information

706A-B‧‧‧ Block Confirmation

800‧‧‧Communication Agreement

802A-B‧‧‧Relay frame

804A-D‧‧‧ Block Confirmation

806A-D‧‧‧Information

808A-B‧‧‧ Block Confirmation

810A-B‧‧‧UL information

900‧‧‧Communication Agreement

902‧‧‧UL Scheduling Frame

904A-B‧‧‧Information

906‧‧‧Multiple user block confirmation

908‧‧‧DL scheduling frame

910‧‧‧Information

912A‧‧‧ Block Confirmation

914A‧‧‧ Block Confirmation Requirements

1000‧‧‧Communication Agreement

1002‧‧‧Relay frame

1100‧‧‧Relay frame

1200‧‧‧Communication Agreement

1202‧‧‧Relay frame

1204A-B‧‧‧MU-Starting Frame

1206A-D‧‧‧Information

1208A-B‧‧‧Multiple User Block Confirmation

1300‧‧Communication Agreement

1304‧‧‧Relay frame

1306‧‧‧DL data

1400‧‧‧Communication Agreement

1402‧‧‧Multiple user block confirmation

1500‧‧‧Send method flow chart

1502-4‧‧‧Send process steps

1600‧‧‧Send method flow chart

1602-4‧‧‧Send process steps

1700‧‧‧ Machine

1702‧‧‧ hardware processor

1704‧‧‧ main memory

1706‧‧‧ Static memory

1708‧‧‧Interconnection

1710‧‧‧Display unit

1712‧‧‧Text input device

1714‧‧‧User interface navigation device

1716‧‧‧Storage device

1718‧‧‧Signal generator

1720‧‧‧Network interface device

1721‧‧‧Sensor

1722‧‧‧ Machine readable media

1724‧‧ directive

1726‧‧‧Communication network

1728‧‧‧Output controller

1730‧‧‧ radio

In the figures, the same reference numerals may be used to illustrate similar components. The same reference numbers with different text subscripts may represent different examples of similar components. The figures generally exemplify the various embodiments discussed in this document by way of example, but not by way of limitation.

1 shows a block diagram of an example of a system in accordance with one or more embodiments.

2 shows a block diagram of an example of UL operation in accordance with one or more embodiments.

3 shows a block diagram of an example of DL operation in accordance with one or more embodiments.

4 shows a block diagram of an example of UL and DL operations in accordance with one or more embodiments.

FIG. 5 shows a block diagram of an example of UL operation in accordance with one or more embodiments.

6 shows a block diagram of an example of DL operation in accordance with one or more embodiments.

7 shows a multi-subchannel in accordance with one or more embodiments. A block diagram of the UL operating example.

8 shows a block diagram of an example of multiple sub-channel UL and DL operations in accordance with one or more embodiments.

9 shows a block diagram of an example of a scheduled transmission for a UL operation and a scheduled transmission for a DL operation in accordance with one or more embodiments.

10 shows a block diagram of an example of a scheduled transmission for both UL and DL operations in accordance with one or more embodiments.

11 shows a block diagram of an example of scheduled transmission in accordance with one or more embodiments.

12 shows a block diagram of an example of scheduled transmission in accordance with one or more embodiments.

13 shows a block diagram of a combined schedule and DL transmission paradigm in accordance with one or more embodiments.

14 shows a block diagram of an example of combined schedule and block acknowledgement transmission in accordance with one or more embodiments.

15 shows a flow chart in accordance with one example of one or more embodiments.

16 shows a flow chart of another technical example in accordance with one or more embodiments.

17 shows a block diagram of an example of a computer system in accordance with one or more embodiments.

Detailed description of the preferred embodiment

The examples in this disclosure are generally related to devices and methods for MU-MIMO. The examples in this disclosure may relate to frequency multiplexing in MU-MIMO.

The Institute of Electrical and Electronics Engineers (IEEE) 802.11ac standard only supports downlink (DL) multi-user multiple input multiple output (MU-MIMO) but does not support uplink (UL) MU-MIMO. There is currently no support for MU frequency multiplexing in the 802.11 specification (eg, Orthogonal Frequency Division Multiple Access (OFDMA)).

Discussions in the IEEE HEW Research Group indicate that support for DL and UL multi-user space and frequency multiplexing will be supported in the future. Discussed herein are devices and methods that can support MU frequency or spatial multiplexing in both UL and DL aspects. A particular form of frequency and time multiplexing includes OFDMA, but frequency and time multiplexing of other techniques can also be used.

FIG. 1 shows an example of a system 100 in accordance with one or more embodiments. The system 100 can include a wireless device 102 (e.g., a wireless local area network (WLAN) wireless device, such as a wireless fax (WiFi) wireless device). The system 100 can include a plurality of stations (STAs) 104A or 104B. The STAs 104A-B can be a User Equipment (UE) device. The STAs 104A-B may be a wireless communication device (eg, a laptop, desktop, personal digital assistant (PDA), telephone, or the like), or have an agreement as detailed herein. Other devices of ability. The STAs 104A-B or the wireless device 102 can be mobile or stationary.

The wireless device 102 can transmit the transmission to the STAs 104A-B and the STAs 104A-B can transmit the transmission to the wireless device 102. The wireless device 102 can transmit the transmission on a DL in a MU-MIMO. The wireless device 102 can include circuitry to perform UL MU-MIMO operations or frequency multiplexing thereon, for example, to provide a MU-MIMO DL with or without frequency multiplexing. This configuration can increase the bandwidth provided to a STA or increase the number of STAs served by the wireless device 102.

In accordance with some HEW embodiments, the wireless device 102 can operate as a primary STA that can be configured to secure a wireless medium (e.g., during a contention period) for receiving a HEW control period (i.e., a transmission opportunity) (TXOP)) The exclusive control of the media. The primary STA may send a HEW primary synchronization transmission at the beginning of the HEW control period. During the HEW control period, the HEW STA can communicate with the primary STA in accordance with a non-contention based multi-access technology. This is different from the Wi-Fi communication in which the device communicates according to a competition-based communication technology, rather than communicating according to a multiple access technology. During the HEW control period, the primary STA may communicate with the HEW STA using one or more HEW frames. . During the HEW control period, legacy STAs avoid communication. In some embodiments, the primary synchronization transmission can be sent as a HEW control and schedule transmission.

In some embodiments, the multiple access techniques used during the HEW control period may be a scheduled OFDMA technique, although the scope of the embodiments is not limited in this respect. In some embodiments, the multiple access technology may be a time division multiple access (TDMA) technique or a frequency division multiple access (FDMA) technique. This multiple access technology can include spatial multiplexing.

The master STA can communicate with the old STAs according to the old IEEE 802.11 communication technology. In some embodiments, the primary STA may also be configured to communicate with the HEW STA outside of the HEW control period in accordance with legacy IEEE 802.11 communication techniques, although this is not a requirement.

In some embodiments, the link of an HEW frame can be configurable to have the same bandwidth and the bandwidth can be one of 20 MHz, 40 MHz, 80 MHz, or 160 MHz. In some embodiments, a bandwidth of 320 MHz can be used. In these embodiments, the links of a HEW frame can be configured to transmit some spatial streams.

2 shows a block diagram of a protocol example for UL operation in a MU-MIMO configuration in accordance with one or more embodiments. The STA 104A-B can transmit data to the wireless device 102 using a single user access technology. The technique of the prior art may include the STA 104A waiting for a period of time (e.g., an inter-arbit inter-frame space (AIFS) time 206 plus a random time). The STA 104A may send the material 202A (e.g., with an indicator indicating that the STA 104A has more queues for transmission) to the wireless device 102 at a first time and the STA 104B may at a different time Data 202B (e.g., with an indicator indicating that STA 104A has more queues for transmission) is sent to the wireless device 102. The wireless device 102 can transmit a block acknowledgment (BA) 204A after receiving the data 202A-B. The STAs 104A-B may "piggyback" an additional material indicated on the data frame to indicate that they have a queue for transmission. A method for signaling this indication may include using a "More Information" field in a Media Access Control (MAC) header in one of the data frames.

The wireless device 102 can identify that a plurality of STAs 104A-B have queued data for transmission. To improve access performance, the wireless device 102 can transmit a Scheduling Frame (SCH) 208. The SCH may allocate pending traffic to the STAs 104A-B. Resources can contain subchannels (frequency resources) or spatial streams (spatial resources). The STAs 104A-B may use the allocated resources to transmit the data 202C or 202D to the wireless device 102. The wireless device 102 can respond to the data transmission by indicating whether the data 202C-D was successfully received by one of the multi-user block acknowledgments (MBA) 210. The MBA 210 can indicate which sets of data of the transmitted complex array data 202C-D are received, such as indicating to the STA 104A-B whether to retransmit the data 202C-D.

FIG. 3 shows a block diagram of an example of a DL operation 300. The wireless device 102 can transmit a Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU) via one or more subsets of the spatial streams that are assigned to each of the STAs 104A-B. Immediately following the transmission of the profile 302A or 302B, a STA 104A can respond with an immediate BA 304A response. The other STAs 104B addressed in the MU PPDU may be queried sequentially using a block acknowledgment request (BAR) frame 306 and return their BA 304B responses. This protocol for 802.11 specifications for MU-MIMO can be improved, for example, more efficiently, for example, as discussed herein.

4 shows a block diagram of a DL and UL MU-MIMO protocol 400 in accordance with one or more embodiments and an example of DL and UL MU-MIMO communication for frequency multiplexing. The protocol 400 can support both MU frequency multiplexing and spatial multiplexing of both UL and DL.

The wireless device 102 can transmit a SCH 402 to the STAs 104A-B over a plurality of subchannels (e.g., each subchannel can be a different frequency band) or across the entire channel. The SCH 402 may send the SCH 402 after waiting for a period of time (e.g., the AIFS plus a random amount of time 404). Data 406A or 406B may be sent to a respective STA 104A-B on a subchannel that is in communication with STAs 104A-B. The SCH 402 and the data 406A-B may be transmitted in the same message or packet, for example, as shown in FIG. The STAs 104A-B can send a BA 408A-B to the wireless device 102, for example, in response to receiving the data 406A-B. In this case of the UL, the STAs 104A-B can transmit the data 410A-B with the BAs 408A-B. The BAs 408A-B or the data 410A-B may be transmitted in conjunction with the SCH 402 at a time or on a subchannel or on a spatial stream. The wireless device 102 can transmit an MBA 412, for example, in response to receiving the data 410A-B.

The following changes may be included: (1) a SCH may specify a spatial or frequency resource for a UL transmission; (2) a SCH may specify that each STA will use a modulation and coding mechanism (MCS) for a UL transmission. Or transmit power; (3) transmitting a SCH from a PPDU carrying one of the DL data frames and using one of the old compatible formats, so that the old STA can receive it and set for a transmit (TX) operation. (OP) (jointly TXOP) continues their network deployment vector (NAV), or if the SCH is separate from the data frame, the SCH and the data frame can each have their own unique PHY header If they are not separate, they can share a PHY header; (4) in the old compatible PPDU, simultaneously with each of a different subchannel, send a plurality of SCHs, such that the SCHs included in each frame are only applied to the STAs received on a respective subchannel; (5) the SCH is transmitted as part of the same PPDU carrying the DL data frame; (6) A plurality of SCHs are sent in a PPDU carrying a DL data frame, wherein each SCH frame occupies a different group of subchannels, and the scheduling in each SCH frame is applied to the STA that receives the subchannels; (7) a DL PPDU carries A data frame for different users, wherein the data frame for a particular user occupies a subset of the subchannels or the spatial stream used for the PPDU; (8) sends one from each STA in a UL a PPDU, the STAs have been allocated frequency or space resources and use the designated resources; (9) includes a BA in the UL PPDU, wherein the BA frame acknowledges the received data frame in the DL PPDU; 10) containing zero or more data frames in the UL PPDU; (11) a DL PPDU transmission (ie, from a wireless device) carrying a single MBA that acknowledges data received from a plurality of STAs Box; (12) a DL PPDU containing individual BAs, for each STA, when on the uplink Transmitting a data frame to the wireless device, wherein each BA uses a respective subchannel or spatial resource; or (13) a DL PPDU containing a plurality of MBAs, wherein each MBA uses an intended recipient's STA Acceptable subchannels as well as spatial streams.

5 shows a block diagram of an example of a communication protocol 500 for MU-MIMO frequency multiplex communication for only DL, in accordance with one or more embodiments. The wireless device 102 can transmit a DL SCH 502 to the STAs 104A-B (e.g., after an AIFS plus a random compensation time 504). The wireless device 102 can be in a first subchannel or empty The data 506A is sent to the STA 104A and the data 506B is sent to the STA 104B on a second subchannel or spatial stream, the second subchannel or spatial stream being different from the first subchannel Or space (eg, a frequency band different from the first subchannel). The STA 104A may send a BA 508A to the wireless device 102 on the first subchannel or spatial stream, and the STA 104B may send a BA 508B to the wireless on the second subchannel or spatial stream. Device 102, for example, is responsive to receiving respective data 506A-B.

6 shows a block diagram of an example of a MU MIMO, non-frequency multiplexed, communication protocol 600 for UL-only communication, in accordance with one or more embodiments. The wireless device 102 can transmit a UL SCH 602 to the STAs 104A-B (e.g., after an AIFS plus a random compensation time). The STAs 104A-B can send the data 604A-B to the wireless device 102, for example, for a time coincident with one of the times indicated by the SCH 602. The wireless device 102 can send an MBA 606 to the STAs 104A-B, for example, in response to receiving the data 604A-B.

7 shows a block diagram of an example of a MU MIMO, frequency multiplex, communication protocol 700 for UL communication only in accordance with one or more embodiments. The SCH 702A or 702B is transmitted and received on different subchannels or spatial streams, the data 704A or 704B is transmitted on different subchannels or spatial streams, and a BA 706A or 706B is on a different subchannel. Or the spatial stream is transmitted, and the protocol 700 can be similar to the communication protocol 600. The SCH 702A may be transmitted on the same sub-channel or spatial stream as the data 704A and BA 706A (SCH 702B, data 704B, and BA 706B). The same).

8 shows a block diagram of an example of a MU-MIMO, frequency multiplex communication protocol 800 for UL and DL communications in accordance with one or more embodiments. In the embodiment shown in FIG. 8, the BAs 804A, 804B, 804C, or 804D may be added to the next DL PPDU carrying the data 806A, 806B, 806C, or 806D to a previous UL PPDU. Those STAs 104A-B that send material 810A or 810B are sent. These SCH 802A or 802B can be used for communication between both DL and UL. The BA 804A-D can be combined with the SCH 802A-B or DL data 806A-D. BA 808A-B can be combined with UL data 810A-B. Although FIG. 8 shows SCH 802A-B for both UL and DL, the SCH may be used (eg, by using MU-MIMO, frequency multiplexing, or both) in either DL or UL, Or both.

9 shows a block diagram of an example of a communication protocol 900 for UL and DL communication in accordance with one or more embodiments. The communication protocol 900 can include a UL SCH 902 and a separate DL SCH 908. The wireless device 102 can transmit a UL SCH 902 to the STAs 104A-B. The UL SCH 902 may be sent over the entire channel, for example, as shown in Figure 9, or may be split according to different subchannels or spatial streams and the SCH may be sent via respective subchannel or spatial streams. The data 904A-B may be received by the wireless device 102 over a subchannel or spatial stream, for example, may be indicated to the STAs 104A-B using a MAC frame or a preamble. The material 904A-B may be received at a time consistent with one of the times indicated by the SCH 902. The wireless device 102, for example, can span the entire frequency The channel or space stream transmits an MBA 906 to the STAs 104A-B, or to one or more sub-channels or spatial streams via a transmission, for example, sub-channels or space strings communicated by the STAs 104A-B flow.

The DL SCH 908 may be sent across the entire channel, for example, as shown in Figure 9, or may be configured in accordance with a respective sub-channel or spatial stream, and the SCH may be streamed via respective sub-channels or spaces. send. The material 910 can be received on the sub-channel or spatial stream used to transmit the data 910 using the STAs 104A-B. The data 904A-B may be transmitted at a time consistent with the time indicated by the SCH 908. The STA 104A, for example, can transmit a BA 912A to the wireless device 102 by the spatial stream or subchannel on which the material 910 is received. The wireless device 102 can transmit a BAR 914A to the STAs 104A-B, for example, by streaming across the entire channel or space or to one or more subchannels or spatial streams, for example, by the STAs 104A-B. Subchannel or space stream. The STA 104B can send a BA 912B to the wireless device 102, for example, in response to receiving the BAR 914A.

10 shows a block diagram of an example of a communication protocol 1000 for UL and DL communication using a single UL and DL SCH 1002, in accordance with one or more embodiments. The communication protocol 1000 can be similar to the communication protocol 900, and the communication protocol 1000 includes a SCH 1002 to schedule both UL and DL transmissions (i.e., UL transmissions from the STAs 104A-B and DL transmissions from the wireless device 102). . It should be noted that the scheduling may include indicating a time frame in which the wireless device 102 or the STAs 104A-B are to monitor a channel, spatial stream, or subchannel for data.

11 shows a block diagram of an example structure of an SCH 1100 in accordance with one or more embodiments. The information contained in an SCH frame includes a spatial stream indicator, a subchannel indicator, an MCS, or a transmission power for one of the STAs. The spatial stream and subchannel allocation in the SCH frame can be represented as a two-dimensional map, which is divided into a one-dimensional spatial stream and a sub-channel of another dimension.

An associated ID (AID) location in the two-dimensional array (or map) may indicate that a resource (a subchannel associated with the subchannel index and a spatial stream associated with the spatial stream index) is assigned to be assigned STA of AID.

The map information (map) can be segmented into individual subchannels. Each segment can contain information for a subchannel. The STA can monitor the map information assigned to the subchannels. The specification of the subchannel and the designation of the spatial stream can be completed in a separate configuration frame (for example, a map configuration frame).

The SCH transmission can be in a non-high throughput (HT) format, so that the old station can detect and set the NAV for the TXOP to continue. The size of the map bar (i.e., the number of bits) may depend on the number of subchannels or spatial streams available or in use.

The recurring cost of the map (the number of signaling bits required to transmit a SCH frame) can be reduced in a number of ways. The wireless device can send map information as long-term configuration information or the map information can be carried in a beacon or a SCH, which can be periodically transmitted, wherein the period can be configured To reduce the amount of time that the SCH is transmitted. One or more In one embodiment, for example, in an embodiment where the SCH is not frequently transmitted, another frame (eg, a MU-initiated frame) can be used to initiate MU-MIMO or by minimal information therein. Frequency multiplexed transmission, for example, before a TXOP (eg, a UL PPDU or DL PPDU).

12 shows a block diagram of an example of a communication protocol 1200 that is configured to reduce mapping or SCH recurring costs in accordance with one or more embodiments. A plurality of maps can be assigned to one of the beacon stations or SCH 1202 that is not frequently changed or transmitted. The SCH 1202 can be assigned a map ID for each map configuration. The wireless device 102 can use another frame (e.g., MU-initiator 1204A or 1204B) to indicate a map ID prior to the start of a TXOP (e.g., UL or DL PPDU or UL or DL transmission) (e.g., Only one map ID). The STAs 104A-B can transmit data 1206A-D that are consistent with the map IDs indicated in the MU-initiated frames 1204A-B. The wireless device 102 can transmit an MBA 1208A-B, for example, in response to receiving data 1206A-D.

In one or more embodiments, wherein the plurality of maps are assigned to a recurring expense or SCH, the map ID may be selectable. For example, if a DL transmission is followed by a UL transmission, the SCH may indicate this to the STA and the map ID will not need to be sent, for example, prior to the UL transmission.

Different maps may be carried in any of the same SCH or individual SCHs, for example, in the case of a frequency multiplexed communication protocol, different SCHs on respective subchannels. For example, a map can be defined as a map information element (IE) and a SCH can carry a plurality of such IE. The map IE may include a map ID and the corresponding map information.

Based on the map information carried in the SCH frame transmitted from the wireless device 102, the STAs 104A-B only need to listen to a subset or spatial stream of subchannels assigned to them. The MU Initiation Frame then carries a map ID that tells the STA 104A-B which map will take effect in the next TXOP. The STAs 104A-B can decode or transmit packets based on the map ID. The MU Initiating Frame, in one or more embodiments, does not carry mapping information, but only carries the map ID, for example, to reduce frequent costs. The MU Initiating Frame may also contain the MCS and power transmission information used by the STA 104A-B, or may be carried in the SCH instead of the MU Initiating Frame.

Another way to reduce the recurring cost may include wireless devices that only transmit the difference in the map changes to reduce the recurring cost (eg, the amount of information to be transmitted to the STAs 104A-B), for example, may be considered as a delta SCH.

FIG. 13 shows a block diagram of an example of a communication protocol 1300 in accordance with one or more embodiments. SCH 1304 can be combined with more than 1306 user transmissions of a DL data, for example, to reduce frequent costs. In this embodiment, the map in SCH 1304 can be designed as a new MAC header for carrying map information. The map information can be carried in a preamble 1302 or carried in a MAC header.

14 shows a block diagram of an example of a communication protocol 1400 in accordance with one or more embodiments. The communication protocol 1400 is similar to the communication protocol 1300, which includes a preamble 1302, a SCH 1304, and one of the DL profiles 1306, MBA 1402. The MBA1402 can confirm first Reception of UL data sent before.

It should be noted that the order of MBA, SCH, DL data, or preamble may be flexible, for example, in a different location or order than one displayed in the graphics.

A DL ACK for a plurality of STAs can be carried in a single frame MBA. The DL ACK can be combined with the SCH, for example, to reduce frequent costs. The DL ACK that confirms the reception of the UL MU data transmission can be combined with the DL data. Similarly, the UL profile can carry a UL ACK that is used to confirm receipt of the DL multi-user data transmission.

FIG. 15 shows a flow chart of an example of a method 1500 in accordance with one or more embodiments. At 1502, a SCH can be sent to schedule a UL transmission. The SCH can be sent from a wireless device or sent to a STA. The SCH can be sent using a plurality of spatial streams or one or more subchannels. At 1504, a BA may be sent in response to receiving UL data, for example, from a plurality of STAs. The BA may be sent to the STAs using a plurality of spatial streams or one or more subchannels.

Each subchannel can contain a plurality of spatial streams. Each subchannel may contain or occupy a different frequency band than the other subchannels. The SCH can indicate to the STA when to monitor a particular subchannel or spatial stream. The SCH can be divided into a plurality of SCHs, and there is an SCH for each subchannel or spatial stream. Transmitting the SCH may include transmitting the SCHs of the plurality of SCHs on a respective subchannel or spatial stream associated with the SCHs of the plurality of SCHs.

Technique 1500 can include, using the plurality of spatial streams or The subchannel transmits the DL data to the plurality of STAs. Two or more of SCH, DL data, and BA can be combined into a single frame. The SCH may include a plurality of maps to schedule a plurality of TXOPs. The technique 1500 can include transmitting a map ID frame indicating which of the plurality of maps is associated with the next TXOP.

16 shows a flowchart of an example of a method 1600 in accordance with one or more embodiments. At 1602, a SCH can be sent to schedule a DL transmission. The SCH may be transmitted using a plurality of subchannels, wherein each of the subchannels comprises a plurality of spatial streams. The SCH may indicate which of the respective sub-channels of the plurality of sub-channels and which of the respective sub-channels are to be transmitted by the monitoring DL. At 1604, a BA can be received from each STA that receives the DL data. The BA may be received on the respective subchannel and on the subchannel where the SCH indicates that the STA is to be monitored.

The SCH may include a plurality of maps, each of which may include a corresponding map ID. Each map can schedule a different TXOP. Transmitting the SCH may include transmitting a BA having one of the SCHs, the BA confirming receipt of previously transmitted DL data. The method 1600 can include transmitting a delta SCH that only includes information that has changed since a last SCH or delta SCH transmission.

17 illustrates a block diagram of an example machine 1700 that can be performed by any one or more of the techniques (eg, methods) discussed herein. In other embodiments, the machine 1700 can operate as a standalone device or can be connected (eg, in a network connection) to other machines. The machine 1700 can be a component of one of the STAs or wireless devices discussed herein. In the network connection In the configuration, the machine 1700 can operate with performance in a server machine, a client machine, or a server-client network environment. In one example, the machine 1700 can function as one of peer-to-peer machines in a peer-to-peer (P2P) network environment (or other distributed). The machine 1700 can be a personal computer (PC), a tablet PC, a set-top box (STB), a personal digital assistant (PDA), a mobile phone, a network appliance, a network router, a switch or a bridge, or any capable (continuous Or otherwise) a machine that executes instructions that specify actions to be taken by the machine (eg, a base station). Further, although only a single machine is illustrated, the word "machine" will also be taken to include any set of machines that individually or jointly perform a set (or sets) of instructions to perform any of the ones discussed herein or Multiple methods, such as cloud computers, as a service software (SaaS), other computer cluster configurations.

As described herein, examples may include, or be operable on, logic or components, modules, or mechanisms. A module is a tangible entity (for example, a hardware) that is capable of performing a specified operation when it is operated. A module contains hardware. In one example, the hardware can be explicitly configured to perform a particular operation (eg, hardwired). In one example, the hardware can include a configurable execution unit (eg, a transistor, a circuit, etc., and a computer readable medium containing instructions, wherein when operating, the instructions configure the execution units to A specific operation is performed. The configuration can occur under the direction of the execution unit or a loading mechanism. Thus, when the device is operating, the execution units are communicatively coupled to the computer readable medium. In this example The execution units may be members of more than one module. For example, in operation, the execution units may be configured to execute at a point in time using the first set of instructions The first module is reconfigured to implement a second module using a second set of instructions.

A machine (eg, computer system) 1700 can include a hardware processor 1702 (eg, a central processing unit (CPU), a graphics processing unit (GPU), a hardware processor core, or any combination thereof), a primary Memory 1704 and a static memory 1706, some or an owner may communicate with each other via an interconnect (e.g., bus bar) 1708. The machine 1700 can further include a display unit 1710, an alphanumeric input device 1712 (eg, a keyboard), and a user interface (UI) navigation device 1714 (eg, a mouse). In one example, the display unit 1710, the input device 1712, and the UI navigation device 1714 can be a touch screen display. The machine 1700 can additionally include a storage device (eg, a drive unit) 1716, a signal generating device 1718 (eg, a microphone), a network interface device 1720, and one or more sensors 1721, for example, a Global Positioning System (GPS) sensors, compasses, accelerators, or other sensors. The machine 1700 can include an output controller 1728, for example, a series (eg, a universal serial bus (USB)), side by side, or other wired or wireless (eg, infrared (IR), near field communication (NFC)). , etc.) to communicate or control one or more peripheral devices (eg, a printer, card reader, etc.). The machine 1700 can include one or more radios 1730 (eg, transmit, receive, or transceiver devices). The radios 1730 can include one or more antennas that receive signals. The radios 1730 can be coupled to or include the processor 1702. The processor 1702 can cause the radios 1730 to perform one or more transmitting or receiving operations. Coupling these radios 1730 to this processor can be considered and configured The radio 1730 performs these operations.

The storage device 1716 can include a machine readable medium 1722, one or more sets of data structures or instructions 1724 (eg, software) implemented or employed by any one or more of the techniques or functions described herein. Stored on it. The instructions 1724 may also reside wholly or at least partially within the main memory 1704, within the static memory 1706, or within the hardware processor 1702 during execution by the machine 1700. In one example, the hardware processor 1702, the main memory 1704, the static memory 1706, or one of the storage devices 1716, or any combination thereof, may constitute a machine readable medium.

Although the machine readable medium 1722 is illustrated as a single medium, the term "machine readable medium" may include a single medium or a plurality of media (eg, a centralized or distributed library, and/or associated caches). And a server) configured to store the one or more instructions 1724.

The phrase "machine-readable medium" can include any storage technology that can store, encode, or carry the instructions executable by machine 1700 and can cause the machine 1700 to perform any one or more of the present disclosure, or it can be stored, Encoded or carried data structures that are used by or in connection with such instructions. Non-limiting machine readable media examples may include solid state memory, as well as optical and magnetic media. Machine readable Specific examples of media may include non-electrical memory, such as semiconductor memory devices (eg, electrically programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM)), and flash Memory device; floppy disk, for example, internal hard disk and removable disk; magnetic-optical disk; And CD-ROM and DVD-ROM discs.

The instructions 1724 may further utilize some transfer protocols (eg, frame repeaters, Internet Protocol (IP), Transmission Control Protocol (TCP), User Data Telegraph Protocol (UDP), Hypertext Transfer Protocol (HTTP), Any of the others, via a network interface device 1720, is transmitted or received via a communication network 1726 using a transmission medium. Examples of communication networks may include a local area network (LAN), a wide area network (WAN), a packaged data network (eg, the Internet), and a mobile telephone network (eg, a mobile phone network). , Plain Old Telephone (POTS) networks, and wireless data networks (for example, the IEEE 802.11 family of Wi-Fi®, known as WiMax®'s standard IEEE 802.16 family), Standard IEEE 802.15.4 family, peer-to-peer (P2P) networks, and more. In one example, the network interface device 1720 can include one or more physical socket devices (eg, Ethernet, coaxial cable, or telephone jack) or one or more antennas connected to the communication network 1726. In one example, the network interface device 1720 can include a plurality of antennas to wirelessly use at least one of single input multiple output (SIMO), multiple input multiple output (MIMO), or multiple input single output (MISO) techniques. communication. The term "transmission medium" shall be taken to include any non-physical medium that is capable of storing, encoding or carrying instructions executed by machine 1700, as well as containing digital or analog communication signals or other non-physical media to facilitate communication of the software. .

Other considerations

This main matter can be illustrated by many examples.

Example 1 can contain or use major items (eg, for An apparatus, a method, a component, or a device containing instructions can read a memory, and when the instructions are performed using the apparatus, the apparatus can be configured to perform the following actions, for example, can include or Using circuitry (eg, a transceiver configured) to transmit a Scheduling Frame (SCH) to a plurality of Stations (STAs) to schedule an Uplink (UL) transmission, and to respond via a plurality of spatial streams Receiving data from the plurality of STAs, and transmitting a block acknowledgment (BA) to the plurality of STAs via a plurality of spatial streams.

Example 2 may include or use, or may be optionally combined with the main matter of the example 1, for inclusion or use, wherein transmitting the SCH includes circuitry for transmitting the SCH circuit through a plurality of subchannels, the plurality of subchannels Each of the subchannels is assigned a spatial stream of the plurality of spatial streams, wherein the SCH includes indicating which subchannel of the plurality of subchannels and which of the subchannels are allocated to the STA, the STA will monitor The information of the data is sent to one of the plurality of STAs.

Example 3 may include or use, or may be selectively combined with the main matter of Example 2 to include or use, wherein the SCH is divided into a plurality of SCHs, and one SCH for each of the plurality of subchannels, and wherein The circuit is used to simultaneously transmit individual SCHs on a respective subchannel.

Example 4 can include or use, or can be selectively combined with at least one of the main items of Examples 2-3 to include or use the circuit, via a plurality of spatial streams and subchannels, as indicated in the SCH The time is consistent for one time, and downlink (DL) data is sent to the plurality of STAs.

Example 5 may include or use, or may be optionally combined with the main items of Example 4 for inclusion or use, wherein the circuit further transmits a block acknowledgment (BA) in the same frame as the one of the SCHs, The BA confirms that the previously transmitted uplink (UL) transmission has been received.

Example 6 can include or use, or can optionally be combined with at least one of the main items of Examples 4-5 for inclusion or use, wherein the circuit is for transmitting two or more in a single frame SCH, DL data, and BA.

Example 7 can include or use, or can be selectively combined with at least one of the main items of Examples 4-6 to include or use, wherein the SCH includes a plurality of maps to schedule a plurality of transmission operations, and wherein The circuitry further transmits a map identification (ID) (eg, in a bitmap ID frame) prior to transmitting the UL transmission or the DL data, indicating which of the plurality of maps is associated with The next send operation is associated.

Example 8 may include or use, or may be optionally combined with at least one of the main items of Examples 4-7 for inclusion or use, wherein the SCH includes a plurality of maps to schedule a plurality of transmission operations, wherein One of the transmitting operations includes a DL transmission followed by a UL transmission, and wherein the DL transmission indicates a map ID indicating which of the plurality of maps is to be transmitted with the next one Associated.

Example 9 may include or use, or may be optionally combined with at least one of the principal aspects of Examples 1-8 for inclusion or use, wherein the circuitry is further for transmitting a delta SCH to the plurality of The STA changes the SCH, and the difference SCH indicates one or more changes to the SCH.

Example 10 may include or use a primary item (eg, a device for performing an action, a method, a component, or a device readable memory containing instructions, when the instructions are performed using the device, Resulting that the device will be configured to perform the following actions), for example, may include or use circuitry (eg, a transceiver configured) to perform the following actions: via a plurality of subchannels, wherein each of the plurality of subchannels of the plurality of subchannels And are allocated to one of the plurality of spatial streams, and send a scheduling frame (SCH) to a plurality of stations (STA) to schedule the downlink (DL) transmission, the SCH indicating the plurality of sub-s Which of the individual subchannels of the channel and which spatial stream is assigned to the respective subchannel will be monitored for DL transmission.

Example 11 can include or use, or can be selectively combined with the main items of Example 10 for inclusion or use, wherein the circuit transmitting the SCH includes circuitry for transmitting a plurality of maps, each map including a corresponding map identification (ID), where each map schedules a different send operation (TXOP).

Example 12 can include or be used, or can be selectively combined with at least one of the main items of Examples 10-11 for inclusion or use, wherein the circuit is for transmitting a zone in the same frame as the one of the SCHs Block acknowledgement (BA), which confirms that the previously transmitted uplink (UL) transmission has been received.

Example 13 can include or use, or can be selectively combined with at least one of the principal aspects of Examples 10-12 for inclusion or use, wherein the circuitry is to transmit a delta SCH to the STAs to change the SCH, the difference SCH indicates one or more changes to the SCH.

Example 14 can contain or use major items (for example, to enter A device, a method, a component, or a device containing instructions can read a memory, and when the instructions are performed using the device, the device can be configured to perform the following actions, for example, can include Or using, transmitting, through a plurality of spatial streams, a sequence frame (SCH) to a plurality of stations (STAs) for scheduling an uplink (UL) transmission, and responsive to receipt from the plurality of STAs The data, via a plurality of spatial streams, sends a block acknowledgment (BA) to the plurality of STAs.

Example 15 may include or use, or may optionally be combined with the main subject matter 14 of the example for inclusion or use, wherein the transmission of a plurality of spatial streams is used, including transmitting a plurality of sub-channels to occupy a plurality of different frequency bands. Each of the sub-channels, each sub-channel of the plurality of sub-channels is allocated to one of the plurality of spatial streams, and wherein the SCH includes indicating which sub-channels of the plurality of sub-channels are assigned and assigned Which space of the subchannel is streamed to the STA will monitor the information of the data to one of the plurality of STAs.

Example 16 may include or use, or may be optionally combined with at least one of the main items of Examples 14-15 for inclusion or use, wherein the SCH is segmented into a plurality of SCHs for each of the plurality of subchannels The channel has a CH, and wherein transmitting the SCH includes transmitting the SCH on a respective subchannel associated with the SCH.

Example 17 can include or use, or can optionally be combined with at least one of the main items of Examples 14-16 to include or use, transmitting downlink (DL) data via a plurality of spatial streams and subchannels To these multiple STAs.

Example 18 can include or use, or can be selectively combined with at least one of the main items of Examples 14-17 to include or use, two or more SCH, DL data, and BA in a single frame. Was sent in.

Example 19 can include or use, or can be selectively combined with at least one of the main items of Examples 14-18 for inclusion or use, wherein the SCH includes a plurality of maps to schedule a plurality of transmission operations, and wherein The method further includes transmitting a map identification (ID) (eg, in a map ID frame) prior to transmitting the UL transmission or the DL data, the map identification (ID) indicating the plurality of maps Which map is associated with the next send operation.

Example 20 can include or use, or can be selectively combined with at least one of the main items of Examples 14-19 for inclusion or use, wherein the SCH includes a plurality of maps to schedule a plurality of transmission operations, wherein The plurality of transmission operations includes a DL transmission followed by a UL transmission, and wherein the DL transmission indicates a map ID, the map ID identifying which of the plurality of maps is mapped to the next transmission operation (TXOP) )Associated.

Example 21 may include or use, or may be optionally combined with at least one of the main items of Examples 14-20 to include or use to transmit a delta SCH to the plurality of STAs to change the SCH, The difference SCH indicates one or more changes to the SCH.

Example 22 may include or use a primary item (eg, a device for performing an action, a method, a component, or a device readable memory containing instructions that may result when the instructions are utilized by the device Configure the device to perform the following actions), for example, can be included or used, Using a plurality of subchannels, wherein each subchannel of the plurality of subchannels is allocated to a plurality of spatial streams, and a scheduling frame (SCH) is transmitted to a plurality of stations (STAs) to schedule a downlink ( DL) data transmission, the SCH indicating which of the respective subchannels of the plurality of subchannels and which spatial stream assigned to the respective subchannels are to be monitored for DL transmission, or using the plurality of subchannels and the plurality of subchannels A plurality of spatial streams are received, and each STA receiving the transmitted DL data receives a confirmation frame.

Example 23 may include or use, or may optionally be combined with the main item 22 of the example for inclusion or use, wherein the SCH includes a plurality of maps, each map including a corresponding map identification (ID), wherein each The map schedules a different send operation (TXOP).

Example 24 can include or use, or can be selectively combined with at least one of the main items of Examples 22-23 for inclusion or use, wherein transmitting the SCH includes transmitting a block acknowledgment (BA) by the SCH, The BA confirms the receipt of the previously transmitted DL data.

Example 25 may include or use, or may be optionally combined with at least one of the principal items of Examples 22-24 to include or use to transmit a delta SCH that includes only from a last SCH or a difference SCH Information changed after sending.

Example 26 can include or use, or can be selectively combined with the primary matters of at least one of the examples 1-13 to include or use a processor, a memory coupled to the processor, at least one coupled to A radio, or at least one, of the processor is coupled to the radio antenna.

The above detailed description includes the accompanying drawings, which form a detailed description a part. By way of illustration, the figures illustrate particular embodiments in which the methods, devices, and systems discussed herein can be implemented. These embodiments are also referred to herein as "examples." Such examples may include elements other than those shown or described. However, the inventors of the present invention have also considered examples in which only those elements shown or described are provided. Furthermore, the inventors of the present invention have also considered an example (or one or more of its arguments) of any combination or permutation of those elements that are shown or described, any one specific example (or one or more thereof) Arguments), or other examples (or one or more of them) as shown or described herein.

In this document, the words "a" or "an" are used, as is common in the patent document, and includes one or more than one, without any relating to "at least one" or "one or more" Other examples or usage. In this document, the word "or" is used to refer to a non-exclusive nature, or such that unless otherwise indicated, "A or B" includes "A but not B", "B but not A", and "A and B". In this document, the words "including" and "in" are used as the ordinary English equivalent of the respective words "including" and "in". Also, in the scope of the following claims, the words "including" and "comprising" are also open-ended, that is, a system, device, article, structure, formula, or process, which includes items other than as claimed in the claims. Subsequent elements that are listed are still considered to fall within the scope of the patent application. Further, in the scope of the following claims, the words "first", "second", "third", and the like are used merely as an indication, and do not intend to impose numbers on their items.

As used herein, when referring to a reference number, in the non-exclusive meanings discussed in the preceding paragraph, all elements within the range indicated by the dashed line, a "-" (dashed line) is used to indicate "or". . For example, 103A-B indicates that one of the elements in the range {103A, 103B} is non-exclusive "or" such that 103A-103B contains "103A but not 103B", "103B but not 103A", and "103A and 103B".

The above description is intended to be illustrative, and not limiting. For example, the above examples (or one or more of its arguments) can be used in combination with one another. Other embodiments may be used when reviewing the above description, for example, by those of ordinary skill in the art. The abstract is provided to comply with 37 CFR § 1.72(b) to allow the reader to quickly determine the nature of the technical disclosure. It should be understood that it is provided without being used to interpret or limit the scope or meaning of the scope of the patent application. Also, in the above detailed description, various features may be grouped together to make the disclosure smooth. This should not be seen as an intent to make an unclaimed disclosure necessary for any patent application. On the contrary, the inventive subject matter may be less than all features of a particular disclosed embodiment. The scope of the following claims is hereby incorporated by reference in its entirety as the same as the claims The scope of the invention is to be determined with reference to the appended claims, and all equivalents of the scope of the claims.

100‧‧‧ system

102‧‧‧Wireless devices

104A, 104B‧‧‧ Platform (STA)

Claims (18)

A wireless device comprising a transceiver configured to perform the following actions: transmitting a sequence frame (SCH) to a plurality of stations (STA) via a plurality of spatial streams to schedule an uplink A way (UL) transmission, in response to data received from the plurality of STAs, transmitting a block acknowledgment (BA) to the plurality of STAs via a plurality of spatial streams, wherein the SCH is configured to transmit the SCH The transceiver includes a transceiver configured to transmit the SCH via a plurality of subchannels, each subchannel of the plurality of subchannels being assigned a spatial stream of the plurality of spatial streams, wherein the SCH includes information, The information is used to indicate to the STAs of the plurality of STAs which sub-channel of the plurality of sub-channels for data and which spatial stream is allocated to the sub-channel. The wireless device of claim 1, wherein the SCH is divided into a plurality of SCHs, a SCH is used for each of the plurality of subchannels of the plurality of subchannels, and wherein the transceiver is configured to transmit on a respective subchannel Each SCH transmits and transmits the plurality of SCHs. The wireless device of claim 2, wherein the transceiver is further configured to: transmit downlink (DL) data at a time indicated in the SCH via a plurality of spatial streams and subchannels To these multiple STAs. A wireless device as claimed in claim 3, wherein the transceiver is configured to transmit a block acknowledgment (BA) in the same frame as the one of the SCHs, the BA confirming that the previously transmitted uplink (UL) transmission has been Received. A wireless device as claimed in claim 3, wherein the transceiver is configured to transmit two or more SCH, DL data, and BA in a single frame. The wireless device of claim 3, wherein the SCH includes a plurality of maps for scheduling a plurality of transmission operations, and wherein the transceiver is configured to transmit a map prior to transmitting the UL transmission or the DL data Identification (ID) frame, the map identification (ID) frame indicating which of the plurality of maps is associated with the next send operation. The wireless device of claim 3, wherein the SCH comprises a plurality of maps to schedule a plurality of transmission operations, wherein one of the transmission operations comprises a DL transmission followed by a UL transmission, and wherein the DL transmission A map ID is indicated, the map ID indicating which of the plurality of maps is associated with the next send operation. The wireless device of claim 1, wherein the transceiver is configured to transmit a delta SCH to the plurality of STAs to vary the SCH, the difference SCH indicating one or more changes to the SCH . A wireless device comprising a transceiver configured to: act through a plurality of subchannels, wherein each subchannel of the plurality of subchannels is assigned a spatial stream of a plurality of spatial streams, and Transmitting a Scheduling Frame (SCH) to a plurality of stations (STAs) for scheduling a downlink (DL) transmission, the SCH indicating that the plurals to be monitored for the DL transmission are to be monitored Which of the sub-channels of the sub-channels and which of the individual sub-channels are streamed. The wireless device of claim 9, wherein the transceiver configured to transmit the SCH includes the transceiver configured to transmit a plurality of maps, each map including a corresponding map identification (ID), wherein Each map schedule has a different send operation (TXOP). The wireless device of claim 9, wherein the transceiver is configured to transmit a block acknowledgment (BA) in a same frame as the one of the SCHs, the BA confirming that the previously transmitted uplink (UL) transmission has been Received. A wireless device as in claim 11, wherein the transceiver is configured to transmit a delta SCH to the STAs to vary the SCH, the difference SCH indicating one or more changes to the SCH. A method implemented by a wireless device, the method comprising the steps of: transmitting a sequence frame (SCH) to a plurality of stations (STAs) to schedule an uplink (UL) transmission via a plurality of spatial streams, And in response to receiving data from the plurality of STAs, transmitting a block acknowledgment (BA) to the plurality of STAs via a plurality of spatial streams, wherein the transmitting via the plurality of spatial streams includes a plurality of sub-streams Transmitted by the channel, each subchannel of the plurality of subchannels is assigned a spatial stream of the plurality of spatial streams, each of the plurality of subchannels occupying a different frequency band, and wherein the SCH contains information, and the information is used by the information Instructing the STA to monitor by one of the plurality of STAs Which subchannel of the plurality of subchannels for the data and which spatial stream is assigned to the subchannel. The method of claim 13, wherein the SCH is divided into a plurality of SCHs, one SCH is used for each subchannel, and wherein transmitting the SCH includes transmitting the SCH on a respective subchannel associated with the SCH. The method of claim 14, further comprising transmitting downlink (DL) data to the plurality of STAs via the plurality of spatial streams and subchannels. The method of claim 14, wherein the two or more SCH, DL data, and BA are transmitted in a single frame. The method of claim 15, wherein the SCH comprises a plurality of maps to schedule a plurality of transmission operations, and wherein the method further comprises transmitting an image recognition (ID) message prior to transmitting the UL transmission or the DL data. A frame, the map identification (ID) frame indicating which of the plurality of maps is associated with the next send operation. The method of claim 15, wherein the SCH comprises a plurality of maps to schedule a plurality of transmission operations, wherein the plurality of transmission operations comprise a DL transmission followed by a UL transmission, and wherein the DL transmission indicates a mapping Figure ID, which maps which of the plurality of maps is associated with the next transmit operation (TXOP).