Spreadtrum Communications (shanghai) Co., Ltd.

Yanchao Xu

Chinghwa Yu

Long Wang

Yuhren Jauh

Xin Liu

Qinghua Yu

Yexin Peng

Yantao Li

Yuren Zhao

Yuh-Ren Jauh

Ching-Hwa Yu

Jauh Yuh-Ren

Provided are a method for data transmission, a device for data transmission, a multi-link system, and a storage medium. The method for data transmission is applied to a first device having a plurality of links to a second device. The method includes: determining an available link from the plurality of links for data to be transmitted to the second device; and transmitting the data based on a result of transmission right contention of the plurality of links.

Method and device for data transmission, multi-link system, and storage medium

Provided are a method and an apparatus for multi-link data transmission and a storage medium. The method includes: transmitting real time application (RTA) data over a primary link; and transmitting the RTA data at a high priority in response to a repetition condition being triggered. The apparatus includes: a memory; and at least one processor coupled to the memory and configured to transmit RTA data over a primary link; and transmit the RTA data at a high priority in response to a repetition condition being triggered.

Method and apparatus for multi-link data transmission, and storage medium

A reverse trigger system of multiple access point (multi-AP) operation and an Access Point (AP) are provided. The reverse trigger system includes: a common station; an initializer AP configured to send a trigger announcement to the common station, wherein the common station sends a trigger frame in response to receiving the trigger announcement; and at least one first coordinated AP configured to send first data in response to receiving the trigger frame, wherein the initializer AP is configured to send second data in response to receiving the trigger frame. Embodiments of the present disclosure may enable joint and synchronous data transmission between APs which cannot communicate with each other directly.

Reverse trigger system of multiple access point operation including common station, initializer AP and first coordinated AP, and access point

MPDU transmission method and device for a multi-link system, MPDU reception method and device for a multi-link system, a storage medium, a transmitter and a receiver are provided. The MPDU transmission method includes: determining a frame sequence number space which includes a plurality of frame sequence numbers and is defined based on a triplet &#x3c;U-ID_t, U-ID_r, TID&#x3e;, wherein U-ID_t represents a unique identifier of a transmitter, and U-ID_r represents a unique identifier of a receiver; determining a transmission order of a plurality of MPDUs to be transmitted, wherein each of the plurality of MPDUs carries an MSDU; sequentially obtaining frame sequence numbers from the frame sequence number space based on the transmission order; and transmitting the plurality of MPDUs based on the transmission order. Disordered reception issues at the receiver in multi-link transmission may be solved.

MPDU transmission method and device for multi-link system, MPDU reception method and device for multi-link system, storage medium, transmitter and receiver

A data packet transmission method and device, a storage medium and a terminal are provided. The method includes: during multi-link transmission, duplicating a first failed data packet in a transmission window to at least one other link of multiple links, wherein the multiple links include a first link on which the first failed data packet is transmitted and the at least one other link; and retransmitting the first failed data packet on the at least one other link and the first link, wherein the first failed data packet is a data packet whose transmission does not succeed and which has a smallest sequence number in the transmission window. Embodiments of the present disclosure may mitigate data packet transmission blocking caused by failed data packets in a WLAN multi-link system.

Data packet transmission method and device, storage medium and terminal

A wireless roaming method and an apparatus, a storage medium and an access point device are disclosed. The wireless roaming method comprises: receiving, from an overlapping access point, first signal strength indication information that describes signal strength when a station transmits a data packet to the overlapping access point via a current channel, wherein the coverage of the overlapping access point overlaps with that of a current access point, the station accesses to the current access point, and the current access point operates on the current channel; measuring second signal strength information that describes signal strength when the station transmits a data packet to the current access point via the current channel; and sending the first signal strength indication information and the second signal strength indication information to the station, and/or generating a switching instruction based on the first signal strength indication information and the second signal strength indication information and sending at least the switching instruction to the station. The technical solution of the present disclosure can improve the efficiency of wireless roaming.

Wireless roaming method and device, storage medium, and access point device

Data transmission method and device are provided. The method includes: determining a portion of a plurality of links as dedicated link, and the other portion of the plurality of links as ordinary link, wherein the dedicated link is configured to transmit control frames which include ordinary control frames and dedicated control frames, and the ordinary link is configured to transmit data frames and ordinary control frames; determining links for control frames to be transmitted and data frames to be transmitted; and when the dedicated link or the ordinary link obtains a transmission opportunity, transmitting a control frame or a data frame at a head of a queuing list of the link. By configuring the dedicated link, transmission efficiency of the control frames may be improved, compatibility with existing systems is relatively good, and complexity of design is relatively low.

Data transmission method and device for multi-link Wi-Fi system

A signaling transmission method and device, a signaling reception method and device, a storage medium and a terminal are provided. The signaling transmission method includes: if an advanced setting for transmitting Real Time Application (RTA) packets is supported, configuring an indication signaling, wherein the indication signaling is used to instruct a Wireless Local Area Network (WLAN) station to transmit a packet based on packet duration limitation and/or transmission opportunity duration limitation; and transmitting the indication signaling. Embodiments of the present disclosure may shorten latency to meet communication requirements of RTA.

Signaling transmission method and device, signaling reception method and device, storage medium and terminal

A method and a device for performing downlink multiple user-multiple input multiple output (DL MU-MIMO) transmission, a storage medium, and a user equipment. Said method comprises: in response to a channel competition success, performing a channel sounding procedure based on NDP; according to a preset Transmission Opportunity (TxOP) duration, or according to a busy or idle state of a channel in a first period after the channel sounding procedure based on NDP, determining whether to start to perform DL MU-MIMO transmission or not. Embodiments of the present disclosure provide a solution on how to improve probability and success rate of performing DL MU-MIMO transmission, improving efficiency of DL MU-MIMO transmission and performance of Wi-Fi.

Method and device for performing downlink multiple user-multiple input muptiple output transmission, storage medium, and user equipment

Channel scanning method and device, storage medium and terminal are provided. The method includes: during scanning of a current channel, determining whether to prolong a minimum channel time of the current channel in a time interval before a probe request frame is sent on the current channel; if it is determined to prolong the minimum channel time of the current channel, updating the minimum channel time of the current channel, or else, maintaining the minimum channel time of the current channel, and on the current channel, contending for channel usage right based on CSMA, and when the channel usage right is acquired, sending a probe request frame, and starting a minimum channel time timer, wherein a timing duration of the minimum channel time timer is set based on the minimum channel time. With embodiments of the present disclosure, channel scanning is optimized and efficiency of the channel scanning is improved.

Channel scanning method and device, storage medium and terminal

A wireless roaming method, an access point apparatus and a mobile station are disclosed. The wireless roaming method comprises: determining whether or not a key for a target access point corresponding to a mobile station is stored; if the key is not stored, performing key exchange on behalf of the mobile station with the target access point so as to obtain a key corresponding to the mobile station; and sending the key to the mobile station. In the technical solution of the present disclosure, before the mobile station connects to a target access point, a current access point, on behalf of the mobile station, obtains a key corresponding to the mobile from the target access point. Therefore, the mobile station does not need to perform key exchange with the target access point after accessing to the target access point, which may reduce roaming delays caused by key exchange and improve the efficiency of wireless roaming, and thereby improve user experience.

Wireless roaming method, access point device, and mobile station

A data transmission method and device for multiple radio frequency systems, a storage medium and a terminal are provided. The multiple radio frequency systems multiplex a shared radio frequency component to transmit Wi-Fi data and non-Wi-Fi data, during a Wi-Fi time slice for transmitting the Wi-Fi data, a plurality of Transmission Opportunity Periods (TxOPs) are allocated to transmit a plurality of data packets of the Wi-Fi data, and the method includes, when allocating each of the plurality of TxOPs, determining whether the TxOP to be allocated exceeds the Wi-Fi time slice; and if the TxOP to be allocated exceeds the Wi-Fi time slice, adjusting the TxOP to be allocated to make the adjusted TxOP do not exceed the Wi-Fi time slice. Embodiments of the present disclosure may facilitate the multiple radio frequency systems sharing a single antenna, thereby realizing coexistence of different radio frequency systems.

Data transmission method and device for multiple radio frequency systems, storage medium and terminal

Data frame retransmission method and device are provided. The method is applied in a multi-link Wi-Fi system including multiple links each of which includes a queuing list for determining a transmission order of data frames in the link, and the method includes: when a first link obtains a transmission opportunity, transmitting, on the first link, a first data frame at a head of the queuing list of the first link; if transmission of the first data frame does not succeed, restoring ranking of the first data frame in queuing lists of links in a retransmission link set, or arranging the first data frame at heads of the queuing lists of the links; and when any link in the retransmission link set obtains a new transmission opportunity and the first data frame is at a head of a queuing list of the link, retransmitting the first data frame on the link.

Data frame retransmission method and device

A data packet transmission method and device, a storage medium and a terminal are provided. During multi-link transmission, a first failed data packet in a transmission window is duplicated to at least one other link of multiple links, where the multiple links include a first link on which the first failed data packet is transmitted and the at least one other link. The first failed data packet is retransmitted on the at least one other link and the first link, wherein the first failed data packet is a data packet whose transmission does not succeed and which has a smallest sequence number in the transmission window.

Data retransmission method and device, data response method and device, and a storage medium are provided. The data retransmission method includes: receiving acknowledgement frames on a plurality of links, wherein each of the acknowledgement frames includes reception information of AMPDUs belonging to a same block acknowledgement agreement at a transmission time of the acknowledgement frames on the plurality of links; if the acknowledgement frame is not successfully received on a first link, detecting whether the acknowledgement frame is successfully received on other links, and determining whether to retransmit based on the reception information in the acknowledgement frame successfully received on the other links; and if it is determined to retransmit, determining MPDUs to be retransmitted based on the reception information in the acknowledgement frame successfully received on the other links, and retransmitting the MPDUs to be retransmitted on any one of the plurality of links. Transmission efficiency may be improved.

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Shanghai, China

Yanchao Xu