发明名称 Transmitter and receiver tracking techniques for user devices in a MIMO network
摘要 A technique includes (i) receiving a first pilot signal from a base station via a receiver of a client device, or (ii) transmitting a second pilot signal from the client device to the base station via a transmitter of the client device. First time differences and signal quality values for N samples of N respective packets in the first pilot signal are determined. Second time differences and signal quality values are received via the receiver. The second time differences and signal quality values are generated for M samples of M respective packets in the second pilot signal. An offset value is determined based on (i) the first time differences and signal quality values, or (ii) the second time differences and signal quality values. Activation or deactivation times of the receiver or the transmitter or transmission times of the transmitter are adjusted based on the offset value.
申请公布号 US9271171(B1) 申请公布日期 2016.02.23
申请号 US201313913608 申请日期 2013.06.10
申请人 Google Inc. 发明人 Yuan Yuan;Gossett Carroll Philip
分类号 H04J3/00;H04W24/02 主分类号 H04J3/00
代理机构 Morris & Kamlay LLP 代理人 Morris & Kamlay LLP
主权项 1. A computer-implemented method of tuning at least one of a receiver and a transmitter of a client device, the method comprising: at least one of (i) receiving a first pilot signal from a base station via the receiver of the client device, and (ii) transmitting a second pilot signal from the client device to the base station via the transmitter of the client device; at least one of: (i) determining, via one of a physical layer device (PHY) and a medium access controller (MAC) of the client device, first time differences and first signal quality values for N samples of N respective packets in the first pilot signal, where N is an integer greater than 1; and(ii) receiving second time differences and second signal quality values from the base station via the receiver of the client device, wherein the second time differences and second signal quality values are generated for M samples of M respective packets in the second pilot signal at the base station, where M is an integer greater than 1; comparing each of the first time differences or the second time differences to a preselected amount of time in one of the PHY and the MAC; for each of the first time differences or the second time differences that is less than or equal to the preselected amount of time, generating a complex number based on (i) the corresponding first time difference or second time difference, and (ii) one of the first signal quality values and second signal quality values; weighting the complex numbers with respective ones of the first signal quality values or second signal quality values; determining, via one of the PHY and the MAC, an offset value based on the weighted complex numbers; and adjusting, via the PHY and based on the offset value, at least one of: (i) an activation time or a deactivation time of the receiver of the client device; and(ii) a transmission time, an activation time, or a deactivation time of the transmitter of the client device.
地址 Mountain View CA US