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公开(公告)号：US20160149676A1
公开(公告)日：2016-05-26
申请号：US14946975
申请日：2015-11-20
Applicant: MEDIATEK INC.
Inventor： Yuh-Ren Jauh , Chao-Chun Wang
CPC classification number: H04L5/006 , H04W52/242 , H04W72/04 , H04W74/0808 , H04W74/0816 , H04W84/12
Abstract: A method of sub-channel independent network allocation vector (NAV) management by a wireless station (STA) in a wideband wireless communications system is proposed. In the wideband system having multiple sub-bands, each NAV for a corresponding sub-band is independently managed. The protection duration for each NAV is independent for each sub-band and the threshold or update rule for NAV modification is also independent for each sub-band. The threshold or update rule for NAV modification may also be different when the NAV is generated or propagated by an OBSS STA. Furthermore, early termination of NAV is allowed if the NAV is set by an OBSS STA only.
Abstract translation: 提出了一种在宽带无线通信系统中由无线站（STA）进行子信道独立网络分配向量（NAV）管理的方法。 在具有多个子带的宽带系统中，用于相应子带的每个NAV被独立地管理。 每个NAV的保护持续时间对于每个子带是独立的，并且用于NAV修改的阈值或更新规则对于每个子带也是独立的。 当NAV由OBSS STA生成或传播时，NAV修改的阈值或更新规则也可能不同。 此外，如果NAV仅由OBSS STA设置，则允许提前终止NAV。
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2.发明申请Methods for Providing Concurrent Communications among Multiple Wireless Communications Devices 审中-公开在多个无线通信设备之间提供并发通信的方法公开(公告)号：US20160014811A1
公开(公告)日：2016-01-14
申请号：US14794680
申请日：2015-07-08
Applicant: MEDIATEK INC.
Inventor： Yuh-Ren Jauh , Chao-Chun Wang
CPC classification number: H04W74/006 , H04B7/0452 , H04L5/0007 , H04W84/12
Abstract: Methods are provided for concurrent communications among multiple wireless communications devices. In one novel aspect, the wireless station transmits a wideband signal to a plurality of wireless communications devices using downlink MIMO and/or OFDMA. The wireless station receives a plurality of responding frames from the plurality of wireless communications devices concurrently using OFDMA. In one embodiment, the wireless station transmits a MU indication bit and MU bandwidth assignment information in the downlink MIMO and/or OFDMA frames. In another novel aspect, the uplink responding frames from multiple wireless communications devices are sent on a corresponding narrow concurrently over more than one transmission instance. AP polling or SIFS only is used between two transmission instances. When the concurrent responding frames occupies less than a bandwidth of an available uplink OFDMA bandwidth, the unoccupied bandwidth is either left empty or occupied by one or more duplicated responding frames.
Abstract translation: 提供了用于多个无线通信设备之间并发通信的方法。 在一个新颖的方面，无线站使用下行链路MIMO和/或OFDMA向多个无线通信设备发送宽带信号。 无线站同时使用OFDMA从多个无线通信设备接收多个响应帧。 在一个实施例中，无线站在下行链路MIMO和/或OFDMA帧中发送MU指示位和MU带宽分配信息。 在另一个新颖的方面，来自多个无线通信设备的上行链路响应帧在多于一个的传输实例上同时发送在相应的窄带上。 仅在两个传输实例之间使用AP轮询或SIFS。 当并发响应帧占用小于可用上行链路OFDMA带宽的带宽时，未占用带宽将被留空或被一个或多个复制响应帧占用。
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公开(公告)号：US20160014763A1
公开(公告)日：2016-01-14
申请号：US14833072
申请日：2015-08-22
Applicant: MEDIATEK INC.
Inventor： Yuh-Ren Jauh , Jianhan Liu , Chao-Chun Wang , James June-Ming Wang , Thomas Edward PARE, JR.
CPC classification number: H04L5/0007 , H04B7/0452 , H04L5/0055
Abstract: Methods and apparatus are provided for burst OFDMA support MU-MIMO in the WLAN network. In one novel aspect, pluralities of user channels are configured for a downlink wideband channel, wherein each user channel is associated with a user group selecting from a SU-SISO, or a SU-MIMO or a MU-MIMO. In one embodiment, the SIG1 and SIG2 signaling fields are independent for each user channel. In another embodiment, the SIG1 fields are duplicates for all user channels carrying common information. The SIG2 fields for each user group are different from each other carrying user group specific information. In another novel aspect, an uplink OFDMA frames contains ACK packets from multiple STAs concurrently using an uplink wideband channel. In one embodiment, one ACK packet is sent for a MU-MIMO user group. In another embodiment, the uplink ACK packet assignment is based on indications in the downlink PHY SIG field.
Abstract translation: 为WLAN网络中的突发OFDMA支持MU-MIMO提供了方法和装置。 在一个新颖的方面，为下行链路宽带信道配置多个用户信道，其中每个用户信道与从SU-SISO或SU-MIMO或MU-MIMO选择的用户组相关联。 在一个实施例中，SIG1和SIG2信令字段对于每个用户信道是独立的。 在另一个实施例中，SIG1字段是携带公共信息的所有用户信道的重复。 每个用户组的SIG2字段彼此不同，承载用户组的具体信息。 在另一个新颖的方面，上行链路OFDMA帧包含使用上行链路宽带信道同时来自多个STA的ACK分组。 在一个实施例中，为MU-MIMO用户组发送一个ACK分组。 在另一个实施例中，上行链路ACK分组分配基于下行链路PHY SIG字段中的指示。
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公开(公告)号：US09980292B2
公开(公告)日：2018-05-22
申请号：US14925891
申请日：2015-10-28
Applicant: MEDIATEK INC.
Inventor： Yuh-Ren Jauh , Ching-Hwa Yu , James June-Ming Wang , Chao-Chun Wang
CPC classification number: H04W74/0833 , H04L1/1607 , H04L5/0007 , H04W72/02 , H04W72/042
Abstract: A method of performing contention-based uplink OFDMA transmission is proposed in accordance with one novel aspect. A wireless communications station (an AP) reserves both dedicated resource and contention resource for uplink OFDMA operation for a list of communications devices (STAs). For contention-based random access, the AP does not need to collect traffic requests from the STAs. The AP only needs to make simple resource arrangement. The AP only needs to specify the allocated resource for random access and the uplink OFDMA operation duration and timing for each uplink OFDMA packet. Each STA having traffic request will contend the resource based on a random access probability scheme.
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公开(公告)号：US09780926B2
公开(公告)日：2017-10-03
申请号：US14833072
申请日：2015-08-22
Applicant: MEDIATEK INC.
Inventor： Yuh-Ren Jauh , Jianhan Liu , Chao-Chun Wang , James June-Ming Wang , Thomas Edward Pare, Jr.
IPC: H04W4/00 , H04L5/00 , H04B7/0452
CPC classification number: H04L5/0007 , H04B7/0452 , H04L5/0055
Abstract: Methods and apparatus are provided for burst OFDMA support MU-MIMO in the WLAN network. In one novel aspect, pluralities of user channels are configured for a downlink wideband channel, wherein each user channel is associated with a user group selecting from a SU-SISO, or a SU-MIMO or a MU-MIMO. In one embodiment, the SIG1 and SIG2 signaling fields are independent for each user channel. In another embodiment, the SIG1 fields are duplicates for all user channels carrying common information. The SIG2 fields for each user group are different from each other carrying user group specific information. In another novel aspect, an uplink OFDMA frames contains ACK packets from multiple STAs concurrently using an uplink wideband channel. In one embodiment, one ACK packet is sent for a MU-MIMO user group. In another embodiment, the uplink ACK packet assignment is based on indications in the downlink PHY SIG field.
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Patent Agency Ranking
6.发明申请Contention Based Uplink Orthogonal Frequency-Division Multiple Access (OFDMA) 有权基于竞争的上行正交频分多址（OFDMA）公开(公告)号：US20160128102A1
公开(公告)日：2016-05-05
申请号：US14925891
申请日：2015-10-28
Applicant: MEDIATEK INC.
Inventor： Yuh-Ren Jauh , Ching-Hwa Yu , James June-Ming Wang , Chao-Chun Wang
IPC: H04W74/08
CPC classification number: H04W74/0833 , H04L1/1607 , H04L5/0007 , H04W72/02 , H04W72/042
Abstract: A method of performing contention-based uplink OFDMA transmission is proposed in accordance with one novel aspect. A wireless communications station (an AP) reserves both dedicated resource and contention resource for uplink OFDMA operation for a list of communications devices (STAs). For contention-based random access, the AP does not need to collect traffic requests from the STAs. The AP only needs to make simple resource arrangement. The AP only needs to specify the allocated resource for random access and the uplink OFDMA operation duration and timing for each uplink OFDMA packet. Each STA having traffic request will contend the resource based on a random access probability scheme.
Abstract translation: 根据一个新颖的方面提出了执行基于竞争的上行链路OFDMA传输的方法。 无线通信站（AP）为通信设备（STA）列表的上行链路OFDMA操作保留专用资源和争用资源。 对于基于竞争的随机访问，AP不需要从STA收集流量请求。 AP只需要简单的资源安排。 AP仅需要为每个上行OFDMA分组指定分配的随机接入资源和上行OFDMA操作持续时间和定时。 具有业务请求的每个STA将基于随机接入概率方案来对资源进行竞争。
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7.发明申请Method to Improve Channel Access Opportunity in a Wireless Communications System 审中-公开改善无线通信系统中频道接入机会的方法公开(公告)号：US20160050691A1
公开(公告)日：2016-02-18
申请号：US14824393
申请日：2015-08-12
Applicant: MEDIATEK INC.
Inventor： Yuh-Ren Jauh , James June-Ming Wang , Chao-Chun Wang , Ching-Hwa Yu , Jianhan Liu
CPC classification number: H04W74/0808 , H04W84/12
Abstract: Methods and apparatus are provided for clear channel assessment in the Wifi network. In one novel aspect, different clear channel assessment (CCA) threshold value is set for intra-BSS and inter-BSS frames during the counting down process. A CCA procedure senses the radio channel and determines if the radio channel is busy or idle during the backoff period by comparing the signal level value of detected fames with the CCA threshold value. The counting down will be suspended if the radio channel determined to be busy. If the detected frame is inter-BSS frame, the CCA threshold value is raised. If the signal level of the detected frames is lower than the inter-BSS CCA threshold for inter-BSS fames, the radio channel is considered idle. The counting down process is resumed.
Abstract translation: 提供方法和设备，用于在Wifi网络中进行清晰的信道评估。 在一个新颖的方面，在倒计时过程中为BSS内和BSS间帧设置不同的清除信道评估（CCA）阈值。 CCA过程检测无线电信道并且通过将检测到的信使的信号电平值与CCA阈值进行比较来确定在退避周期期间无线电信道是忙还是空闲。 无线电频道确定为忙时，倒计时将被暂停。 如果检测到的帧是BSS间帧，则CCA阈值增加。 如果所检测到的帧的信号电平低于用于BSS间信标的BSS间CCA阈值，则无线电信道被认为是空闲的。 倒计时过程恢复。
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公开(公告)号：US10548166B2
公开(公告)日：2020-01-28
申请号：US16127572
申请日：2018-09-11
Applicant: MEDIATEK INC.
Inventor： James June-Ming Wang , Ching-Hwa Yu , Yuh-Ren Jauh , Chih-Shi Yee
Abstract: A method of STA-initiated uplink (UL) aggregation is proposed in a wireless communication system. Under the STA-initiated UL aggregation, an STA can gain access to the medium through contention and after winning the TXOP, it passes the TXOP ownership to its AP to allow it to trigger UL MU transmission. Thus, the AP has increased chance of utilizing the medium while maintains fairness to both legacy APs and STAs. In addition, once AP takes over ownership of the TXOP, if it detects idle secondary channels, it can enable UL aggregation over the idle secondary channels, thereby fully utilizing the entire system bandwidth.
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公开(公告)号：US10004072B2
公开(公告)日：2018-06-19
申请号：US14684449
申请日：2015-04-13
Applicant: MEDIATEK INC.
Inventor： Yuh-Ren Jauh , Yung-Ping Hsu , Kun-Chien Hung
CPC classification number: H04W72/0453 , H04W84/12
Abstract: A wireless device and an associated wireless device are proposed. The wireless device includes a first receiving circuit, a second receiving circuit and a detector. The first receiving circuit is arranged to receive signals in a first band. The second receiving circuit is arranged to selectively receive signals in the first band or signal reception in a second band according to a first control signal, wherein the second band is different from the first band. The detector is arranged to detect existence of a transmission signal in the second band to set the first control signal.
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10.发明申请Efficient OFDMA Resource Utilization by Multiple Access Categories Allowance 审中-公开高效的OFDMA资源利用率通过多种接入类别的津贴公开(公告)号：US20160330753A1
公开(公告)日：2016-11-10
申请号：US15145309
申请日：2016-05-03
Applicant: MEDIATEK INC.
Inventor： Yuh-Ren Jauh , Ching-Hwa Yu , Chao-Chun Wang
CPC classification number: H04W72/10 , H04L5/0007 , H04W28/065 , H04W72/044 , H04W74/0866 , H04W84/12 , H04W88/08
Abstract: A method of performing OFDMA transmission with aggregation from multiple access categories to improve channel utilization of a wireless channel is proposed. In one novel aspect, data from multiple access categories are allowed to be aggregated and transmitted in the same packet to utilize idle time efficiently. In downlink OFDMA, AP can send different AC data to different STAs so that AP can better arrange the transmission resource block. If the resource for one STA has long enough idle time, AP can aggregate more data that is different to the current AC for the same STA to better utilize the resource. In UL OFDMA, different STAs can send different AC data to AP. If the resource for one STA has long enough idle time, the STA can aggregate more data that is different to the current AC to better utilize the resource.
Abstract translation: 提出了一种通过来自多个接入类别的聚合来执行OFDMA传输以提高无线信道的信道利用率的方法。 在一个新颖的方面，允许来自多个接入类别的数据被聚合并在相同的分组中发送以有效地利用空闲时间。 在下行OFDMA中，AP可以向不同的STA发送不同的AC数据，使得AP能够更好地布置传输资源块。 如果一个STA的资源具有足够长的空闲时间，则AP可以聚合更多与当前AC不同的数据，以便更好地利用资源。 在UL OFDMA中，不同的STA可以向AP发送不同的AC数据。 如果一个STA的资源具有足够的空闲时间，则STA可以聚合更多与当前AC不同的数据，以更好地利用资源。
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