公开(公告)号：US20150181479A1

公开(公告)日：2015-06-25

申请号：US14636441

申请日：2015-03-03

Applicant: MEDIATEK INC.

Inventor： Shiang-Jiun Lin ,  Yuanyuan Zhang ,  Per Johan Mikael Johansson

IPC: H04W36/00 ,  H04W76/02

CPC classification number: H04W36/0072 ,  H04L5/001 ,  H04W24/04 ,  H04W36/0055 ,  H04W36/0061 ,  H04W76/15 ,  H04W76/19

Abstract: A method of radio link monitoring (RLM) and radio link failure (RLF) handling over a small cell network is proposed. In a wireless network, a user equipment (UE) establishes a radio resource control (RRC) connection with a base station (eNB), which is UE anchor. The UE applies carrier aggregation for multiple component carriers (CCs) configured as multiple serving cells. The aggregated serving cells are served by the anchor eNB and other drift eNB(s). The UE performs RLM/RLF over PCELL and SCELL belonging to corresponding cell groups. When RLF happens in a serving cell, the UE and the eNB apply certain actions over the serving cell or all serving cells in the group. RLF procedures in anchor eNB and in drift eNB are proposed. Both UE side and network side behaviors are included.

Abstract translation: 提出了一种通过小型网络进行无线电链路监测（RLM）和无线电链路故障（RLF）处理的方法。 在无线网络中，用户设备（UE）与作为UE锚的基站（eNB）建立无线资源控制（RRC）连接。 UE为配置为多个服务小区的多个分量载波（CC）应用载波聚合。 聚合的服务小区由锚eNB和其他漂移eNB服务。 UE在属于相应小区组的PCELL和SCELL上执行RLM / RLF。 当RLF发生在服务小区中时，UE和eNB对组中的服务小区或所有服务小区应用某些动作。 提出了锚点eNB和漂移eNB中的RLF过程。 包括UE侧和网络侧行为。

公开(公告)号：US20150163810A1

公开(公告)日：2015-06-11

申请号：US14621742

申请日：2015-02-13

Applicant: MEDIATEK INC.

Inventor： Chie-Ming Chou ,  Chia-Chun Hsu ,  Yih-Shen Chen ,  Per Johan Mikael Johansson

IPC: H04W72/04 ,  H04W36/26 ,  H04W24/08

CPC classification number: H04W72/0486 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W36/26

Abstract: A method of collecting and providing traffic statistics in a cellular network in accordance is proposed. A UE establishes an RRC connection with a base station. The UE starts to collect traffic statistics that comprises a CDF curve or a PDF diagram for packet inter-arrival time. The UE may receive a measurement configuration from the base station for the traffic statistics collection. The UE then reports a representation of the traffic statistics to the base station for RRC reconfiguration. The UE may also receive a reporting request from the base station that specifies a representation format. The representation format includes one or more probability values at corresponding inter-arrival time points, at least one slope of the CDF, one or more steep events in the CDF, or a PDF range.

Abstract translation: 提出了一种在蜂窝网络中收集和提供流量统计的方法。 UE建立与基站的RRC连接。 UE开始收集包含CDF曲线的流量统计信息或分组到达时间的PDF图。 UE可以从基站接收用于流量统计信息收集的测量配置。 然后，UE向基站报告业务统计信息的表示以用于RRC重新配置。 UE还可以从基站接收指定表示格式的报告请求。 表示格式包括在对应的到达间时间点，CDF的至少一个斜率，CDF中的一个或多个陡峭事件或PDF范围中的一个或多个概率值。

公开(公告)号：US09055560B2

公开(公告)日：2015-06-09

申请号：US13743644

申请日：2013-01-17

Applicant: MEDIATEK, INC.

Inventor： Per Johan Mikael Johansson ,  Yih-Shen Chen ,  Tze-Ping Low ,  William Plumb

IPC: H04W76/02 ,  H04W36/08 ,  H04W36/24 ,  H04W36/00

CPC classification number: H04W76/19 ,  H04W36/0033 ,  H04W36/0055 ,  H04W36/0061 ,  H04W36/0072 ,  H04W36/08 ,  H04W36/24 ,  H04W40/36 ,  H04W48/17 ,  H04W76/18

Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast NAS recovery process is applied to reduce the outage time in the target cell. In a second novel aspect, context fetching is used to reduce the outage time in the target cell. In a third novel aspect, a loss-less reestablishment procedure is proposed to reduce data loss during the connection recovery.

Abstract translation: 提出了由于无线链路故障（RLF）或切换失败（HOF）引起的丢失的RRC连接的增强的连接恢复。 UE首先在移动通信网络中的源小区中建立RRC连接。 之后，UE检测故障事件，并在目标小区中开始RRC重建过程，以恢复RRC连接。 在第一个新颖的方面，应用快速的NAS恢复过程来减少目标小区中的停电时间。 在第二个新颖的方面，使用上下文获取来减少目标小区中的停机时间。 在第三个新颖的方面，提出了一种无损重建过程，以减少连接恢复期间的数据丢失。

公开(公告)号：US08989042B2

公开(公告)日：2015-03-24

申请号：US13756838

申请日：2013-02-01

Applicant: Mediatek, Inc.

Inventor： Chie-Ming Chou ,  Chia-Chun Hsu ,  Yih-Shen Chen ,  Per Johan Mikael Johansson

IPC: H04L12/26 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10

CPC classification number: H04W72/0486 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W36/26

Abstract: A method of triggering and reporting traffic statistics in a cellular network is proposed. A UE establishes an RRC connection with a base station. The UE collects traffic statistics upon detecting a trigger event. The traffic statistics comprises packet inter-arrival time. The trigger event may be detected by the UE or by the base station. The UE then determines a representation of the traffic statistics and report the result to the base station. The report may be triggered by the UE or by the base station based on another trigger event. Upon receiving the traffic statistics, the base station determines RRC reconfiguration parameters. In one example, DRX timer values are determined based on intra-burst packet inter-arrival time. In another example, RRC release timer is determined based on inter-burst packet inter-arrival time.

Abstract translation: 提出了一种在蜂窝网络中触发和报告流量统计的方法。 UE建立与基站的RRC连接。 检测到触发事件后，UE收集流量统计信息。 流量统计包括分组到达时间。 触发事件可以由UE或基站检测。 然后，UE确定流量统计的表示并将结果报告给基站。 报告可以由UE或基站基于另一个触发事件来触发。 在接收到流量统计时，基站确定RRC重配置参数。 在一个示例中，基于突发间分组到达之间时间来确定DRX定时器值。 在另一示例中，基于突发间分组到达之间时间来确定RRC释放定时器。

公开(公告)号：US20130260745A1

公开(公告)日：2013-10-03

申请号：US13688124

申请日：2012-11-28

Applicant: MEDIATEK, INC.

Inventor： Per Johan Mikael Johansson ,  Shiang-Jiun Lin ,  Yih-Shen Chen ,  William Plumb

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04L41/0631 ,  H04L41/0686 ,  H04W24/04 ,  H04W36/00 ,  H04W36/14 ,  H04W36/36 ,  H04W76/19

Abstract: A method of inter-RAT failure event report is proposed. A UE detects a failure event in a first cell served by a first base station, and the first cell belongs to a first RAT. The failure event may include a radio link failure or a handover failure. The UE then performs an RRC establishment procedure with a second cell served by a second base station, and the second cell belongs to a second RAT. After the RRC establishment, the UE transmits a failure event report to the wireless network. The failure event can be a radio link failure, or be associated with a mobility command such as a handover command. By providing more reliable information in the failure event report than a network solution could provide, inter-RAT mobility performance can be improved.

Abstract translation: 提出了一种RAT间故障事件报告的方法。 UE检测由第一基站服务的第一小区中的故障事件，并且第一小区属于第一RAT。 故障事件可能包括无线电链路故障或切换失败。 然后，UE由第二基站服务的第二小区执行RRC建立过程，并且第二小区属于第二RAT。 在RRC建立之后，UE向无线网络发送故障事件报告。 故障事件可以是无线电链路故障，或者与诸如切换命令的移动性命令相关联。 通过在故障事件报告中提供比网络解决方案可以提供更可靠的信息，可以提高RAT间移动性能。

公开(公告)号：US20130183974A1

公开(公告)日：2013-07-18

申请号：US13743612

申请日：2013-01-17

Applicant: Mediatek, Inc.

Inventor： Per Johan Mikael Johansson ,  Yih-Shen Chen ,  Tze-Ping Low ,  William Plumb

IPC: H04W36/24

CPC classification number: H04W76/19 ,  H04W36/0033 ,  H04W36/0055 ,  H04W36/0061 ,  H04W36/0072 ,  H04W36/08 ,  H04W36/24 ,  H04W40/36 ,  H04W48/17 ,  H04W76/18

Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast RLF process is applied to reduce the outage time in the serving cell. In a second novel aspect, an enhanced cell selection mechanism based on cell prioritization information is applied to reduce the outage time in the target cell. In one embodiment, multi-RAT registration is used to steer cell selection.

公开(公告)号：US20130100840A1

公开(公告)日：2013-04-25

申请号：US13659086

申请日：2012-10-24

Applicant: MEDIATEK, INC.

Inventor： Per Johan Mikael Johansson ,  Yih-Shen Chen ,  Chia-Chun Hsu

IPC: H04W24/00

CPC classification number: H04W24/08 ,  H04L43/045 ,  H04L43/0852 ,  H04L43/0888

Abstract: A method and apparatus for transmitter assisted Quality of Service (QoS) measurement. Time information is generated by the transmitter and transmitted along with a data transmission. A receiving device determines a QoS measurement based upon the time information and the received data. The time information indicates when the data was made available for transmission, which data transmission blocks belong to a single data transmission, and when a transmitter buffer was emptied. The QOS measurements are performance measurement such as, latency measurements and throughput measurements. The time information indicates a time reference relative to the timing of a wireless interface. The time reference is a System Frame Number (SFN), a Connection Frame Number (CFN), a relative count of frame numbers, a count of sub-frames, or a count of Time Transmission Intervals (TTIs). An aggregated QOS measurement is generated based upon the QOS measurement.

Abstract translation: 用于发射机辅助服务质量（QoS）测量的方法和装置。 时间信息由发射机产生并与数据传输一起发送。 接收装置根据时间信息和接收到的数据确定QoS测量。 时间信息指示数据何时可用于传输，哪些数据传输块属于单个数据传输，以及何时发送缓冲器被清空。 QOS测量是性能测量，如延迟测量和吞吐量测量。 时间信息表示相对于无线接口的定时的时间参考。 时间参考是系统帧号（SFN），连接帧号（CFN），帧号的相对计数，子帧的计数或时间传输间隔（TTI）的计数。 基于QOS测量生成聚合QOS测量。

公开(公告)号：US20130084809A1

公开(公告)日：2013-04-04

申请号：US13633432

申请日：2012-10-02

Applicant: Mediatek, Inc.

Inventor： Per Johan Mikael Johansson ,  Yih-Shen Chen

IPC: H04W24/08

CPC classification number: H04W24/08 ,  H04W24/10 ,  H04W36/0005 ,  H04W64/00 ,  H04W72/0406 ,  H04W76/19 ,  H04W88/02 ,  H04W88/08

Abstract: A method of throughput and data volume measurement for minimization of drive test (MDT) is proposed. A base station establishes a radio resource control (RRC) connection with a user equipment (UE) in a mobile communication network. The base station or UE measures transmitted or received data volume during a transmission time of a data burst between the base station and the UE. When the data burst spans multiple measurement periods and the data burst is split at each measurement period boundary. For each measurement period, data volume during the measurement period is measured to generate a measurement result. When throughput measurement is performed by the network, the base station receives location information that is available during the transmission time of the data burst. The data volume measurement is logged with time stamp such that each measurement result can correlated with the location information.

Abstract translation: 提出了一种用于最小化驱动测试（MDT）的吞吐量和数据量测量方法。 基站在移动通信网络中与用户设备（UE）建立无线资源控制（RRC）连接。 基站或UE在基站和UE之间的数据突发的传输时间期间测量发送或接收的数据量。 当数据脉冲串跨越多个测量周期，并且数据脉冲串在每个测量周期边界处被分离。 对于每个测量周期，测量测量期间的数据量以产生测量结果。 当由网络执行吞吐量测量时，基站接收在数据突发的发送时间期间可用的位置信息。 使用时间戳记录数据量测量，使得每个测量结果可以与位置信息相关联。

公开(公告)号：US20130083713A1

公开(公告)日：2013-04-04

申请号：US13644065

申请日：2012-10-03

Applicant: MEDIATEK, INC.

Inventor： Per Johan Mikael Johansson ,  Chia-Chun Hsu

IPC: H04W72/04 ,  H04W52/02

CPC classification number: H04W76/04 ,  H04M2250/12 ,  H04W52/0225 ,  H04W52/0254 ,  H04W76/20 ,  Y02D70/1262 ,  Y02D70/24

Abstract: A method for scheduling request triggering based on traffic condition is provided. The method supports detecting a traffic condition, determining a modified scheduling request (SR) trigger based on the traffic condition and transmitting a scheduling request to a base station based on the modified SR trigger. In one embodiment, the modified SR trigger is a data buffer or a data generation rate exceeding a threshold. In one embodiment, the threshold is related to a prioritized Bit Rate (PBR) or a bucket Size Duration (BSD) or both. In another embodiment, the threshold is configured by the base station based on a size of the smallest grant under the traffic condition. In one embodiment, the threshold is updated when DRX state changes. In another embodiment, during DRX sleep state, the SR period is longer or SR is stopped.

Abstract translation: 提供了一种基于流量条件调度请求触发的方法。 该方法支持检测流量状况，基于业务条件确定修改的调度请求（SR）触发，并且基于修改的SR触发向基站发送调度请求。 在一个实施例中，经修改的SR触发器是超过阈值的数据缓冲器或数据生成速率。 在一个实施例中，阈值与优先级比特率（PBR）或桶大小持续时间（BSD）或两者相关。 在另一个实施例中，由基站在交通条件下基于最小授权的大小来配置该阈值。 在一个实施例中，当DRX状态改变时更新阈值。 在另一个实施例中，在DRX休眠状态期间，SR周期较长或SR停止。

公开(公告)号：US11563829B2

公开(公告)日：2023-01-24

申请号：US16790731

申请日：2020-02-14

Applicant: MediaTek Inc.

Inventor： Per Johan Mikael Johansson ,  Mukesh Chouhan ,  Pradeep Jose ,  Pavan Santhana Krishna Nuggehalli

IPC: H04L69/04 ,  H04W28/06 ,  H04L12/46 ,  H04L69/22

Abstract: Various examples and schemes pertaining to simple Ethernet header compression are described. A first network node transmits a first packet with a full header to a second network node. The first network node determines whether a header compression context for the full header has been established by the second network node. In response to determining that the header compression context for the full header has been established by the second network node, the first network node transmits a second packet with a compressed header to the second network node. In response to determining that the header compression context for the full header has not been established by the second network node, the first network node transmits the second packet or a third packet with the full header to the second network node.