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    • 2. 发明授权
    • Wireless communication coding and transmission systems and methods
    • 无线通信编码和传输系统及方法
    • US07508791B2
    • 2009-03-24
    • US11263893
    • 2005-10-31
    • Amit KalhanDoug DunnHenry ChangRamon Khalona
    • Amit KalhanDoug DunnHenry ChangRamon Khalona
    • H04L12/56
    • H04L1/0041H04L1/0001H04L1/08H04L1/1819
    • In a wireless communication system, data is encoded by packet indifferent (PI) coding and some packets are transmitted omnidirectionally while supplemental packets are transmitted directionally to a user with a poor air link. PI encoding is defined herein as encoding in which the source data can be recovered from any K of the encoded packets, regardless of which of the encoded packets are received, where K=N+A. N is equal to the number of packets in the source data and A is the number of additional packets required due to the PI encoding. A subset of M data packets can be sent to one or many users from an omnidirectional antenna, where M is greater than or equal to K. If less than K data packets are received by at least one user, then the data block is not successfully received by that user. A number R of supplemental packets can be sent to users that did not receive K data packets successfully. The supplemental packets can be sent by a directional antenna to the specific user or users that did not receive K data packets.
    • 在无线通信系统中,通过分组无关(PI)编码对数据进行编码,并且一些分组被全向传输,而补充分组被定向地传送给具有差的空中链路的用户。 PI编码在这里被定义为可以从任何K个编码分组恢复源数据的编码,而不管接收到哪个编码分组,其中K = N + A。 N等于源数据中的数据包数,A是由于PI编码而需要的附加数据包的数量。 M数据分组的子集可以从全向天线发送给一个或多个用户,其中M大于或等于K.如果少于K个数据分组被至少一个用户接收,则数据块不成功 由该用户接收。 补充数据包R可以发送给没有成功接收K个数据包的用户。 可以通过定向天线将补充分组发送给不接收K个数据分组的特定用户或用户。
    • 8. 发明申请
    • Wireless communication coding and transmission systems and methods
    • 无线通信编码和传输系统及方法
    • US20070097980A1
    • 2007-05-03
    • US11263893
    • 2005-10-31
    • Amit KalhanDoug DunnHenry ChangRamon Khalona
    • Amit KalhanDoug DunnHenry ChangRamon Khalona
    • H04L12/56
    • H04L1/0041H04L1/0001H04L1/08H04L1/1819
    • In a wireless communication system, data is encoded by packet indifferent (PI) coding and some packets are transmitted omnidirectionally while supplemental packets are transmitted directionally to a user with a poor air link. PI encoding is defined herein as encoding in which the source data can be recovered from any K of the encoded packets, regardless of which of the encoded packets are received, where K=N+A. N is equal to the number of packets in the source data and A is the number of additional packets required due to the PI encoding. A subset of M data packets can be sent to one or many users from an omnidirectional antenna, where M is greater than or equal to K. If less than K data packets are received by at least one user, then the data block is not successfully received by that user. A number R of supplemental packets can be sent to users that did not receive K data packets successfully. The supplemental packets can be sent by a directional antenna to the specific user or users that did not receive K data packets.
    • 在无线通信系统中,通过分组无关(PI)编码对数据进行编码,并且一些分组被全向传输,而补充分组被定向地传送给具有差的空中链路的用户。 PI编码在这里被定义为可以从任何K个编码分组恢复源数据的编码,而不管接收到哪个编码分组,其中K = N + A。 N等于源数据中的数据包数,A是由于PI编码而需要的附加数据包的数量。 M数据分组的子集可以从全向天线发送给一个或多个用户,其中M大于或等于K.如果少于K个数据分组被至少一个用户接收,则数据块不成功 由该用户接收。 补充数据包R可以发送给没有成功接收K个数据包的用户。 可以通过定向天线将补充分组发送给不接收K个数据分组的特定用户或用户。