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公开(公告)号：WO2021101660A1
公开(公告)日：2021-05-27
申请号：PCT/US2020/057089
申请日：2020-10-23
IPC分类号： H04L25/02 , H04L5/00 , H04B7/0452 , H04B7/024 , H04W72/04
摘要： This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for group formation and sounding for distributed multi-user multiple input multiple output (MU-MIMO). Some implementations include a method of wireless communication. The method includes a sounding preparation phase that includes transmitting, to the plurality of access points, a first frame inviting the plurality of access points to perform a beamformed distributed transmission from the plurality of access points to a group of stations (805); receiving a second frame from at least one of the plurality of access points based on transmitting the first frame, the second frame including at least one identifier of at least one station in a different basic service set than a basic service set of the first access point (810); and identifying the group of stations based on the at least one identifier included in the second frame (815).
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公开(公告)号：WO2021076279A1
公开(公告)日：2021-04-22
申请号：PCT/US2020/052124
申请日：2020-09-23
发明人： PATIL, Abhishek Pramod , ASTERJADHI, Alfred , CHERIAN, George , HO, Sai Yiu Duncan , VERMA, Lochan
IPC分类号： H04L1/16
摘要： This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for identifying frames or packets of data that were received in error (such as incorrectly decoded or not received at all) by a receiving device for purposes of retransmission. In one aspect, a wireless device may form a number of frames for wireless transmission. Each of the frames may include a frame header and may be associated with a unique sequence number. In some implementations, for each of the frames, the wireless device may embed at least a portion of the unique sequence number into a portion of a control field or a delimiter field of the frame header. In some other implementations, for each of the frames, the wireless device may signal at least a portion of the unique sequence number using bit locations unassociated with a sequence number field of the frame header.
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公开(公告)号：WO2020231783A1
公开(公告)日：2020-11-19
申请号：PCT/US2020/032033
申请日：2020-05-08
发明人： PATIL, Abhishek Pramod , CHERIAN, George , HO, Sai Yui Duncan , ASTERJADHI, Alfred , VERMA, Lochan
IPC分类号： H04W76/15 , H04B7/12 , H04W84/12 , H04L1/1614 , H04L47/34 , H04W28/06 , H04W40/244 , H04W48/12 , H04W48/16 , H04W88/08
摘要： This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for multi-link aggregation in wireless communications. In one aspect, an apparatus includes a multi-link operation device configured to generate and output for transmission a message indicating a mapping of each of a plurality of traffic identifiers (TIDs) to one or more parameters associated with each of a plurality of wireless links. In some aspects, another apparatus may obtain a message via at least one of a plurality of wireless links indicating a mapping of each of a plurality of TIDs to one or more parameters associated with each the plurality of wireless links, obtain a sequence of packets associated with at least one of the plurality of TIDs via one or more of the plurality of wireless links, and process the sequence of packets based on the mapping indicated via the message.
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公开(公告)号：WO2020146401A1
公开(公告)日：2020-07-16
申请号：PCT/US2020/012599
申请日：2020-01-07
发明人： ZHOU, Yan , PATIL, Abhishek Pramod , VENKATACHALAM JAYARAMAN, Venkata Ramanan , ASTERJADHI, Alfred , CHERIAN, George
IPC分类号： H04W76/15
摘要： Methods, systems, and devices for wireless communication are described. Wireless devices may support parallel communications over multiple wireless links, which may benefit a wireless system in terms of throughput and latency (among other benefits). However, such systems may experience increased system complexity, which may in some cases mitigate some of the benefits provided by the parallel communication links. The described techniques provide for aggregation architectures that address various such complexities. For example, devices communicating in accordance with the described techniques may format data to be transmitted into a set of data units that are allocated to a communication link based on various factors described herein. Correspondingly, a device that receives the data packets may reorder the packets in accordance with the described techniques.
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公开(公告)号：WO2020047196A1
公开(公告)日：2020-03-05
申请号：PCT/US2019/048720
申请日：2019-08-29
摘要： Techniques for improved spatial reuse for wireless local area network (WLAN) networks are described. An access point (AP) may win a contention to a wireless medium and obtain a transmission opportunity (TXOP). The AP may perform a procedure to identify a group of un-managed APs for participation in spatial reuse opportunities for synchronous transmission over the TXOP. The AP may perform the procedure using over-the-air signaling. The AP may transmit a spatial reuse (SR) poll frame to one or more un-managed APs of the network, either sequentially or as part of a multiple- AP procedure. The AP may receive an SR response frame, or directly measure potential interference of a station (STA) serviced by one or more un-managed APs, and select a group of APs for coordinated reuse over the TXOP. The AP may select the group of APs based on one or more criteria for coordinated reuse.
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公开(公告)号：WO2019164770A1
公开(公告)日：2019-08-29
申请号：PCT/US2019/018304
申请日：2019-02-15
发明人： ASTERJADHI, Alfred , CHERIAN, George , TIAN, Bin
IPC分类号： H04W52/02
摘要： Methods, systems, and devices for wireless communications are described. An access point (AP) may identify receiving wireless devices for which to send a wake-up radio (WUR) frame. The AP may obtain a basic service set identifier (BSSID) for the AP that is associated with (or intends to be associated with) the receiving wireless devices, the BSSID being known by the receiving wireless devices. The AP may perform a hashing function to the BSSID to obtain a hashed BSSID. The AP may use a first portion of the hashed BSSID as a first identifier. The AP may generate the WUR frame for transmission with an address identifier field that includes either the first identifier or a second identifier. The second identifier nay be based at least in part on the first identifier. The AP may transmit the WUR frame to the receiving wireless devices.
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公开(公告)号：WO2019164687A1
公开(公告)日：2019-08-29
申请号：PCT/US2019/017343
申请日：2019-02-08
摘要： A wireless station may buffer data associated with one or more traffic identifiers (TIDs), and generate a media access control (MAC) protocol data unit (MPDU) including TID-specific buffer status report (BSR) information. A BSR control field may include an Access Category Identifier (ACI) bitmap and a delta TID parameter indicating a mapping of TID-specific buffer status information to a first and second queue size indicated by the BSR. In some cases, the MPDU may also include a quality of service (QoS) control field, and queue sizes indicated by the BSR control field and QoS control field may be accumulated for reporting buffer status for a TID. Additionally or alternatively, a transmitting wireless station may generate an aggregated MPDU (A-MPDU) including multiple MPDUs with different A-control fields based on a receiving a capabilities information field indicating a number of different aggregated control (A-Control) fields the receiving wireless station supports.
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公开(公告)号：WO2019126320A3
公开(公告)日：2019-06-27
申请号：PCT/US2018/066495
申请日：2018-12-19
摘要： Methods and apparatus for communicating in a wireless network. In one aspect, a first wireless communication device may generate a first frame that includes at least a first aggregated media access control protocol data unit (A-MPDU). The first A-MPDU may include one or more media access control protocol data units (MPDUs). The first wireless communication device may set a first recipient address (RA) field to a first value in a first MPDU, and set a first field in the first MPDU to a second value that represents an identifier of a second wireless communication device. In one aspect, the first wireless communication device may set a second field in the first MPDU to a third value that represents an identifier of a third wireless communication device. The wireless communication device may output the first frame for transmission to at least the second and third wireless communication devices.
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公开(公告)号：WO2019094137A1
公开(公告)日：2019-05-16
申请号：PCT/US2018/054834
申请日：2018-10-08
发明人： VENKATACHALAM JAYARAMAN, Venkata Ramanan , PATIL, Abhishek Pramod , ASTERJADHI, Alfred , CHERIAN, George , ZHOU, Yan
IPC分类号： H04W56/00
摘要： This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for multi-basic service set (BSS) time alignment. In one implementation, an access point (AP) may determine a first transmission parameter for a first trigger transmission to be sent to a station (STA) belonging to the first BSS. The first transmission parameter may include a transmission order for time-separated trigger transmissions, non-overlapping bandwidths for frequency-separated trigger transmissions, trigger data precoding information for spatially-separated trigger transmissions, or a combination thereof. The AP may transmit the first trigger transmission to the first STA, and in response, receive a first synchronized transmission from the first STA. The first synchronized transmission may be synchronized, for example, aligned in time, with a second synchronized transmission from a second STA of a second set of STAs in a second BSS.
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公开(公告)号：WO2019023662A1
公开(公告)日：2019-01-31
申请号：PCT/US2018/044219
申请日：2018-07-27
发明人： CHERIAN, George , SAMPATH, Hemanth , JONES IV, Vincent Knowles , ASTERJADHI, Alfred , PATIL, Abhishek Pramod
IPC分类号： H04W74/00
CPC分类号： H04W74/08 , H04W74/006 , H04W74/04
摘要： Example methods, apparatuses, and computer-readable mediums for wireless communication are provided. In one example, a first device may be configured to determine whether to allow unscheduled access to the first device by a second device. The first device may be configured to transmit, based on the determination, first information to the second device. The first information may include a first indication indicative of whether the second device is allowed to transmit to the first device outside of a scheduled access period, or a second indication indicative of whether the second device is allowed to transmit to the first device without first receiving a trigger.
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