Abstract: Computer technology for retrieving data stored in a table that includes the following computer operations: receiving, from persistent storage of a computer, an original Index Tree data structure; storing, in volatile memory, a memory-based Index Tree data structure based on the original Index Tree data structure, with the memory-based Index Tree data structure including: a root node, a set of hierarchically arranged intermediate layer(s) with each intermediate layer including a plurality of non-leaf nodes, and a leaf layer including a plurality of leaf nodes; and retrieving data from a table in a database, with the retrieval including traversing the memory-based Index Tree data structure through a plurality of child lock pointers to locate pages including the data to be retrieved from the table.

Abstract: Systems, methods, and instrumentalities are disclosed for adaptation of multiple input multiple output (MIMO) mode in mmW Wireless Local Area Network (WLAN) systems. A first station (STA) may receive a mode change request from a second STA. The mode change request may indicate a mode change for a MIMO mode, a polarization mode, and/or an orthogonal frequency-division multiple access (OFDMA) mode. The mode change request may include one or more STA fields. The one or more STA fields may include a STA field associated with the first STA. Each of the one or more STA fields may include a MIMO mode subfield, a polarization mode subfield, and/or an OFDMA mode subfield. The first STA may change the MIMO mode, the polarization mode, and/or the OFDMA mode, for example, based on the mode change request. The first STA may send a mode change response to the second STA.

Abstract: A wireless station (STA) for parameterized spatial reuse (PSR) operation. The STA may receive, from a first access point (AP) that the STA is not associated with, a trigger frame. The trigger frame includes a signal (SIG) field that includes a PSR field. The PSR field includes a plurality of subfields each corresponding to a respective subchannel associated with the trigger frame. This information includes transmission power level information. The STA may then determine, for each subchannel, using the transmission power level information, transmission power upper bounds for each of the subchannels.

Abstract: A computer-implemented method, system and computer program product for scaling a resource of a Database as a Service (DBaaS) cluster in a cloud platform. User service requests from a service cluster to be processed by the DBaaS cluster are received. A first set of tracing data is generated by a service mesh, which facilitates service-to-service communication between the service cluster and the DBaaS cluster, from the user service requests. A second set of tracing data is generated by the DBaaS cluster from handling the user service requests. A dependency tree is then generated to discover application relationships to identify potential bottlenecks in nodes of the DBaaS cluster based on these sets of tracing data. The pod(s) of a DBaaS node are then scaled based on the dependency tree, which is used in part, to predict the utilization of the resources of the DBaaS node identified as being a potential bottleneck.

Abstract: A method of multi-access point (multi-AP) communication performed by a wireless transmit/receive unit (WTRU) comprises: receiving a first trigger frame from a first access point (AP) of a plurality of APs, the first trigger frame comprising first information; receiving a second trigger frame from a second AP of the plurality of APs at a predetermined time duration after receiving the first trigger frame, the second trigger frame also comprising the first information of the first trigger frame; generating a synchronization frame based on the first trigger frame and the second trigger frame, the synchronization frame comprising synchronization information; transmitting the synchronization frame to at least the first AP and the second AP; and receiving a data transmission based on the synchronization information from each of the first AP and the second AP.

Abstract: This disclosure provides a computer-implemented method, a computer system and a computer program product for database compression oriented to combinations of fields of a database record. One or more combinations of fields of a record of a database are determined that satisfy a frequency criterion indicating that access frequencies of the one or more combinations of fields are higher than an access frequency threshold. The record is reorganized based on the one or more combinations of fields to store fields of each combination of the one or more combinations of fields in a respective contiguous storage space. The reorganized record is compressed by applying a compression scheme to the one or more combinations of fields.

Abstract: A computer-implemented method that includes receiving an ingestion request to ingest data to a database comprising physical shards and detecting that the ingestion request is directed to a first hotspot shard. The first hotspot shard has a contention level over a threshold value. The method also detects context characteristics within the data and generates a first virtual shard based on a first virtual shard key selected from the detected context characteristics. The first virtual shard virtually duplicates at least a portion of the first hotspot shard. The method also includes ingesting the data to the first virtual shard.

Abstract: Methods and apparatus for interference discovery for simultaneous transmission and reception are provided. In an embodiment, a station (STA) receives a STR request message from an access point (AP). The STA transmits a first STR response message to the AP based on the received STR request message. The STA receives a second STR response message transmitted from a second STA to the AP. The STA determines a received power of the received second STR response message. The STA receives a first trigger message from the AP. The first trigger message indicates a STA role field. The STA transmits interference information to the AP. The interference information is based on the determined received power. The STA role field comprises an indication of at least one or more of a primary STA and a secondary STA. The STA aggregates the interference report with a data transmission to the AP in response to the first trigger message.

Abstract: Aspects herein provide a system, media, and methods for a mobile edge computer that renders extended reality (XR) in support of a local user device, via a local network. The mobile edge computer can continue to provide updated XR renderings in near real-time when user position data remains within a particular viewing angle, without requesting updated content or rendering assistance from a remote application. When user position data is determined to be outside of the viewing angle, then the mobile edge computer may request additional content from the remote application.

Abstract: This application relates to systems and methods for facilitating online search based on offline transaction data.

Abstract: Systems, methods, and devices for beamforming (BF) training are disclosed. In some examples, a receiver is configured to receive sector sweep (SSW) training frames from an initiator device that each indicate an antenna sector of the initiator device. A transmitter is configured to transmit sector sweep (SSW) training frames to the initiator device that indicate a best received antenna sector of the initiator device. The receiver receives a sector sweep feedback (SSW FB) frame from the initiator device, and the transmitter transmits transmit a sector sweep acknowledgement (SSW ACK) frame to the initiator device that indicates an antenna sector of the initiator device that is different from the antenna sector indicated by the SSW FB frame, if the SSW FB frame was best received by an antenna not corresponding to the best received antenna sector of the initiator device.

Abstract: Disclosed are techniques for relational database locks based on columns. Database transactions may be targeted to specific columns of one or more records, instead of the entire row for those records, using primary keys. Column locks on specific keys are stored separately than column locks on ranges of keys, which are both checked when requesting a new column lock for either a single key or a range of keys. When a threshold number of columns for a given record, or range of records/keys, have been locked, the column locks for that record, or range of records, can be combined into a single row level lock to reduce resource costs for maintaining multiple concurrent locks.

Abstract: The present disclosure provides a speaker box including a shell, a speaker box, a support wall formed by the inner extension of the shell, and a sound guide channel formed in the receiving space. The speaker is fixed to the support wall. The speaker box includes a surrounding wall formed by the inner extension of the shell and a cover plate arranged on the surrounding wall. The shell, surrounding wall, support wall and cover plate are jointly enclosed as auxiliary sound cavity. The support wall is provided with a through-hole, and the auxiliary sound cavity is communicated with the front cavity through the through-hole to form the resonant cavity structure. The speaker box further includes a leakage to achieve the sound pressure balance inside and outside of the shell. Compared with the related art, the high frequency acoustic performance of the speaker box of the present disclosure is excellent.

Abstract: The present disclosure provides a speaker box which comprises a shell, a support wall, a sound guiding channel, a surrounding wall and a cover plate. The speaker is fixed to support the support wall. The diaphragm of the speaker partitions the receiving space into a front sound cavity and a rear cavity, the sound guiding channel communicates the front sound cavity with the outside and forms a front cavity together with the front sound cavity, the shell, the surrounding wall, the support wall and the cover plate are jointly enclosed as an auxiliary acoustic cavity. The support wall is provided with at least two through-holes intervals, and the auxiliary acoustic cavity is communicated with the front cavity through the through-hole to form a resonant cavity structure of the front cavity. Compared with the related art, the high frequency acoustic performance of the speaker box of the present disclosure is excellent.

Abstract: The present disclosure provides a speaker box which comprises a shell, a speaker, a support wall, and a sound guide channel. The speaker is fixed to be supported on the support wall. The diaphragm of the speaker partitions the receiving space into a front sound cavity and a rear cavity. The sound guide channel communicates the front sound cavity with the outside and forms the front cavity with the front sound cavity. The speaker box also comprises a surrounding wall and a cover plate arranged on the surrounding wall. The surrounding wall is located on the outside of the support wall, and the shell, surrounding wall, support wall and cover plate are jointly enclosed as auxiliary acoustic cavity. Compared with the related art, the high frequency acoustic performance of the speaker box of the present disclosure is excellent.

Abstract: A plug connector includes an insulating body, a first plug conductive terminal set and a second plug conductive terminal set. The insulating body includes a base portion, a tongue plate, at least two projections and a stopper block. The tongue plate extends onward from the base portion, the at least two projections extend from two sidewalls of the tongue plate, and the stopper block is positioned on an inner side of one of the at least two projections. The first plug conductive terminal set is fixed upon one side of the tongue plate. The second plug conductive terminal set is fixed upon the other side of the tongue plate.

Abstract: The present disclosure provides a speaker box which comprises a shell, a speaker, a support wall, and a sound guide channel. The speaker is fixed to be supported on the support wall. The diaphragm of the speaker partitions the receiving space into a front sound cavity and a rear cavity. The sound guide channel communicates the front sound cavity with the outside and forms the front cavity with the front sound cavity. The speaker box also comprises a surrounding wall and a cover plate arranged on the surrounding wall. The surrounding wall is located on the outside of the support wall, and the shell, surrounding wall, support wall and cover plate are jointly enclosed as auxiliary acoustic cavity. Compared with the related art, the high frequency acoustic performance of the speaker box of the present disclosure is excellent.

Abstract: The present disclosure provides a speaker box including a shell, a speaker box, a support wall formed by the inner extension of the shell, and a sound guide channel formed in the receiving space. The speaker is fixed to the support wall. The speaker box includes a surrounding wall formed by the inner extension of the shell and a cover plate arranged on the surrounding wall. The shell, surrounding wall, support wall and cover plate are jointly enclosed as auxiliary sound cavity. The support wall is provided with a through-hole, and the auxiliary sound cavity is communicated with the front cavity through the through-hole to form the resonant cavity structure. The speaker box further includes a leakage to achieve the sound pressure balance inside and outside of the shell. Compared with the related art, the high frequency acoustic performance of the speaker box of the present disclosure is excellent.

Abstract: The present disclosure provides a speaker box which comprises a shell, a support wall, a sound guiding channel, a surrounding wall and a cover plate. The speaker is fixed to support the support wall. The diaphragm of the speaker partitions the receiving space into a front sound cavity and a rear cavity, the sound guiding channel communicates the front sound cavity with the outside and forms a front cavity together with the front sound cavity, the shell, the surrounding wall, the support wall and the cover plate are jointly enclosed as an auxiliary acoustic cavity. The support wall is provided with at least two through-holes intervals, and the auxiliary acoustic cavity is communicated with the front cavity through the through-hole to form a resonant cavity structure of the front cavity. Compared with the related art, the high frequency acoustic performance of the speaker box of the present disclosure is excellent.

Abstract: A plug connector includes an insulating body, a first plug conductive terminal set and a second plug conductive terminal set. The insulating body includes a base portion, a tongue plate, at least two projections and a stopper block. The tongue plate extends onward from the base portion, the at least two projections extend from two sidewalls of the tongue plate, and the stopper block is positioned on an inner side of one of the at least two projections. The first plug conductive terminal set is fixed upon one side of the tongue plate. The second plug conductive terminal set is fixed upon the other side of the tongue plate.