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公开(公告)号：US20180206151A1
公开(公告)日：2018-07-19
申请号：US15407045
申请日：2017-01-16
CPC分类号： H04W28/06 , H04L1/1812 , H04L65/608 , H04L65/80 , H04L69/04 , H04L69/22
摘要： Methods, systems, and devices for wireless communication are described. Different robust header compression (RoHC) schemes may be used when a change in a header extension flag between packets of a communication session is determined. For example, a transmitting device may determine a value of a header extension flag in a packet has changed with respect to header extension flags in preceding packets. Upon detecting the change in the header extension flag, the device may compress the header using different RoHC schemes. For instance, the device may compress the header by reverting to an initialization and refresh (IR) state. Additionally or alternatively, the device may compress the header using a compression profile that refrains from compressing a certain portion of the header. In some cases, the RoHC scheme used for compressing the header may be based on how frequently the value of the extension flag changes between packets.
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公开(公告)号：US11463909B1
公开(公告)日：2022-10-04
申请号：US17301292
申请日：2021-03-30
发明人： Deepak Sah , Nagamanikandan Sivakumar , Rahul Jain
摘要： A wireless communication utilizes robust header compression efficiently with improved improvements in packet data convergence protocol configuration for increasing channel throughput. A user equipment (UE) receives a configuration indicating a first listing of header generic options that are supported between the UE and a first base station. The UE obtains a first packet including a first uncompressed header that indicates header parameters. The UE determines whether the header parameters in the first uncompressed header corresponds to at least one header generic option in the first listing of header generic options. The UE communicates the first packet that may have a first compressed header based on a first header compression profile or an uncompressed header depending on whether the header parameters in the first uncompressed header corresponds to at least one header generic option in the first listing of header generic options.
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公开(公告)号：US20220286906A1
公开(公告)日：2022-09-08
申请号：US17195234
申请日：2021-03-08
发明人： Saket Bathwal , Deepak Sah , Leena Zacharias , Rudhir Varna Upretee , Gang Andy Xiao , Venukant Sahu
摘要： In one aspect, a method of wireless communication includes determining a number of bytes in a compressed queue and a number of bytes in an uncompressed queue. The method also includes transmitting a buffer status report (BSR) indicating at least the number of bytes in the compressed queue. The method includes receiving an uplink grant indicating one or more uplink grant resources and a number of bytes allocated for the one or more uplink grant resources. The method also includes generating a transport block (TB) based on the uplink grant and the BSR and from data of at least the compressed queue, wherein the TB includes one or more compressed packets and one or more uncompressed packets. The method further includes transmitting a PUSCH transmission including the TB during an uplink grant resource of the one or more uplink grant resources. Other aspects and features are also claimed and described.
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公开(公告)号：US10110360B2
公开(公告)日：2018-10-23
申请号：US15216480
申请日：2016-07-21
摘要： A recovery mechanism for robust header compression (ROHC) is disclosed for wireless communication systems. The ROHC recovery mechanism may allow a receiver and/or transmitter in the wireless systems to establish or reestablish a context of a packet transmission session when an initialization and refresh message is lost. In the ROHC recovery mechanism, upon receiving a compressed packet that is not associated with a context, a receiver sends a message to a transmitter suggesting the transmitter to transition to another mode. Upon receiving a subsequent packet transmission that is not associated with a context, the receiver sends another message indicating that a context has not been established or has been lost. The transmitter may then send the receiver necessary information to establish a context for the packet transmission session.
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公开(公告)号：US10299162B2
公开(公告)日：2019-05-21
申请号：US15407045
申请日：2017-01-16
摘要： Methods, systems, and devices for wireless communication are described. Different robust header compression (RoHC) schemes may be used when a change in a header extension flag between packets of a communication session is determined. For example, a transmitting device may determine a value of a header extension flag in a packet has changed with respect to header extension flags in preceding packets. Upon detecting the change in the header extension flag, the device may compress the header using different RoHC schemes. For instance, the device may compress the header by reverting to an initialization and refresh (IR) state. Additionally or alternatively, the device may compress the header using a compression profile that refrains from compressing a certain portion of the header. In some cases, the RoHC scheme used for compressing the header may be based on how frequently the value of the extension flag changes between packets.
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公开(公告)号：US10037240B2
公开(公告)日：2018-07-31
申请号：US14864685
申请日：2015-09-24
CPC分类号： G06F11/0793 , G06F11/0709 , G06F11/0751 , H04L69/04 , H04L69/22 , H04W8/30 , H04W28/06
摘要： Methods, systems, and devices may implement a header repair mechanism to deal with a loss of successive compressed headers (e.g., due to radio interface). The present methods and apparatus exploit the fact that once a correct timestamp (TS) from a previous decompression success (called “last successfully decomp_TS”) is known, another (e.g., a subsequent) TS should be in the form: last successfully decomp_TS+n*min_TS_STRIDE, where n is a positive integer if the estimated sequence number (SN) is higher than the last successfully decompressed SN, and a negative integer if the estimated SN is lower than the last successfully decompressed SN, and min_TS_STRIDE is the expected minimum TS increment, which is known and directly related to the medium sample rate and frame rate, for example.
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公开(公告)号：US20170091014A1
公开(公告)日：2017-03-30
申请号：US14864685
申请日：2015-09-24
CPC分类号： G06F11/0793 , G06F11/0709 , G06F11/0751 , H04L69/04 , H04L69/22 , H04W8/30 , H04W28/06
摘要： Methods, systems, and devices may implement a header repair mechanism to deal with a loss of successive compressed headers (e.g., due to radio interface). The present methods and apparatus exploit the fact that once a correct timestamp (TS) from a previous decompression success (called “last successfully decomp_TS”) is known, another (e.g., a subsequent) TS should be in the form: last successfully decomp_TS+n*min_TS_STRIDE, where n is a positive integer if the estimated sequence number (SN) is higher than the last successfully decompressed SN, and a negative integer if the estimated SN is lower than the last successfully decompressed SN, and min_TS_STRIDE is the expected minimum TS increment, which is known and directly related to the medium sample rate and frame rate, for example.
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公开(公告)号：US11653263B2
公开(公告)日：2023-05-16
申请号：US17195234
申请日：2021-03-08
发明人： Saket Bathwal , Deepak Sah , Leena Zacharias , Rudhir Varna Upretee , Gang Andy Xiao , Venukant Sahu
CPC分类号： H04W28/06 , H04L1/0008 , H04W28/0278 , H04W72/042 , H04W72/1268 , H04W72/14 , H04W80/02
摘要： In one aspect, a method of wireless communication includes determining a number of bytes in a compressed queue and a number of bytes in an uncompressed queue. The method also includes transmitting a buffer status report (BSR) indicating at least the number of bytes in the compressed queue. The method includes receiving an uplink grant indicating one or more uplink grant resources and a number of bytes allocated for the one or more uplink grant resources. The method also includes generating a transport block (TB) based on the uplink grant and the BSR and from data of at least the compressed queue, wherein the TB includes one or more compressed packets and one or more uncompressed packets. The method further includes transmitting a PUSCH transmission including the TB during an uplink grant resource of the one or more uplink grant resources. Other aspects and features are also claimed and described.
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公开(公告)号：US11330665B2
公开(公告)日：2022-05-10
申请号：US16738132
申请日：2020-01-09
发明人： Rahul Jain , Deepak Sah , Ganesh Babu Kamma
摘要： Various aspects include methods for Transmission Control Protocol (TCP)/Internet Protocol (IP) (TCP/IP) packet transmission and compression of headers for TCP/IP packet transmission. Various embodiments may include a packet data convergence protocol (PDCP) layer of a processing device applying least significant bit (LSB) encoding to a TCP Timestamp (TS) option of a TCP/IP packet using an offset parameter of zero to generate a compressed header in response to determining that a TCP TS field of the TCP/IP packet and a TCP TS field of a last TCP/IP packet transmitted have a same value. In some embodiments, a Timestamp Value (TSVal) field or a Timestamp Echo Reply (TSEcho) field of the TCP TS option of the compressed header may have a size of one byte.
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10.发明申请RECOVERY MECHANISM FOR ROHC WITH LOST INITIALIZATION AND REFRESH MESSAGES 审中-公开用于ROHC的恢复机制与失去初始化和刷新消息公开(公告)号：US20170033911A1
公开(公告)日：2017-02-02
申请号：US15216480
申请日：2016-07-21
CPC分类号： H04L5/0055 , H03M7/3079 , H03M7/6047 , H03M13/6306 , H03M13/6312 , H04L1/1685 , H04L1/1854 , H04L69/04 , H04L69/22 , H04W28/06
摘要： A recovery mechanism for robust header compression (ROHC) is disclosed for wireless communication systems. The ROHC recovery mechanism may allow a receiver and/or transmitter in the wireless systems to establish or reestablish a context of a packet transmission session when an initialization and refresh message is lost. In the ROHC recovery mechanism, upon receiving a compressed packet that is not associated with a context, a receiver sends a message to a transmitter suggesting the transmitter to transition to another mode. Upon receiving a subsequent packet transmission that is not associated with a context, the receiver sends another message indicating that a context has not been established or has been lost. The transmitter may then send the receiver necessary information to establish a context for the packet transmission session.
摘要翻译： 公开了用于无线通信系统的鲁棒报头压缩（ROHC）的恢复机制。 当初始化和刷新消息丢失时，ROHC恢复机制可以允许无线系统中的接收机和/或发射机建立或重新建立分组传输会话的上下文。 在ROHC恢复机制中，在接收到与上下文无关的压缩分组时，接收机向发射机发送消息，建议发射机转换到另一模式。 在接收到与上下文不相关联的后续分组传输时，接收机发送指示上下文尚未建立或丢失的另一消息。 然后，发射机可以发送接收机必要的信息以建立分组传输会话的上下文。
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