JP5254178B2 - ハートビート・リクエストよりも低電力レベルでのハートビート信号の伝送 - Google Patents
ハートビート・リクエストよりも低電力レベルでのハートビート信号の伝送 Download PDFInfo
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- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1642—Formats specially adapted for sequence numbers
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Description
シミュレーションでは、ハートビート(HB)およびリクエスト付きハートビート(HB/RQST)チャネルの検出および誤り検出の確率に影響する信号交換の説明を最初に提示する。HBおよびHB/RQSTチャネルに対して推奨されるSNR目標を提供する。さらに、分析計算を行って、許容できる検出確率および誤り検出確率の推奨される目標E/Ioを判断する。
i番目のユーザのSNRは、SNR(i)=P(i)−P_interference+処理利得+Erとして計算される。ここで、P_interference(i)(P_干渉(i))はi番目のユーザが受信した干渉の全てであり、P_interference(i)=20*log10(10)^Σj≠i(10^P(j)/20)+10^(PTH/20))として計算され、またP(i)はi番目のユーザから受信した電力であり、PTHは熱雑音下限であり、任意に120dBmに設定される;
処理利得は10log64である;
フェージング・モデルはJakesである;
Er=BTSにおけるSNR推定のエラーであって、1σ=0.67dBの正規分布ランダム変数である;
電力制御ビット(PCB)エラー=3%
=5%*0.1%=5E−5 (2)
ここで、Pfdは誤り検出の確率であり、Pdは検出の確率である。
100 無線通信システム
110 検出器
Claims (7)
- 無線通信システムにおいて、通信状態の変更の要求を判定する方法であって、
前記方法は、
基地局により、フィールド・ユニットに関連付けられた第1のエネルギ・レベルを有する少なくとも1つの第1の信号を受信するステップと、
前記基地局により、前記フィールド・ユニットに関連付けられた第2のエネルギ・レベルを有する少なくとも1つの第2の信号を受信するステップであって、前記第2のエネルギ・レベルは、前記第1のエネルギ・レベルより高いことを特徴とする、受信するステップと、
前記基地局により、前記第1の信号が、前記第1のエネルギ・レベルに基づいて、前記フィールド・ユニットによりトラフィック・データを転送するための要求でないことを判定し、前記基地局により、前記第2の信号が、前記第2のエネルギ・レベルに基づいて、前記フィールド・ユニットにより、トラフィック・データを転送するための要求であることを判定するステップと
を含み、
前記第1の信号及び前記第2の信号が、タイム・スロット内で受信されることを特徴とする方法。 - 無線通信システムにおいて、通信状態の変更の要求を判定する方法であって、
前記方法は、
基地局により、フィールド・ユニットに関連付けられた第1のエネルギ・レベルを有する少なくとも1つの第1の信号を受信するステップと、
前記基地局により、前記フィールド・ユニットに関連付けられた第2のエネルギ・レベルを有する少なくとも1つの第2の信号を受信するステップであって、前記第2のエネルギ・レベルは、前記第1のエネルギ・レベルより高いことを特徴とする、受信するステップと、
前記基地局により、前記第1の信号が、前記第1のエネルギ・レベルに基づいて、前記フィールド・ユニットによりトラフィック・データを転送するための要求でないことを判定し、前記基地局により、前記第2の信号が、前記第2のエネルギ・レベルに基づいて、前記フィールド・ユニットにより、トラフィック・データを転送するための要求であることを判定するステップと
を含み、
前記基地局が、前記フィールド・ユニットが、より高いパワーで、前記第2の信号で送信する必要があることを示す電力コマンドを、前記フィールド・ユニットに転送することを特徴とする方法。 - 無線通信システムにおいて、通信状態の変更の要求を判定する方法であって、
前記方法は、
基地局により、フィールド・ユニットに関連付けられた第1のエネルギ・レベルを有する少なくとも1つの第1の信号を受信するステップと、
前記基地局により、前記フィールド・ユニットに関連付けられた第2のエネルギ・レベルを有する少なくとも1つの第2の信号を受信するステップであって、前記第2のエネルギ・レベルは、前記第1のエネルギ・レベルより高いことを特徴とする、受信するステップと、
前記基地局により、前記第1の信号が、前記第1のエネルギ・レベルに基づいて、前記フィールド・ユニットによりトラフィック・データを転送するための要求でないことを判定し、前記基地局により、前記第2の信号が、前記第2のエネルギ・レベルに基づいて、前記フィールド・ユニットにより、トラフィック・データを転送するための要求であることを判定するステップと
を含み、
前記第2の信号が変調されないことを特徴とする方法。 - 無線通信システムにおいて、通信状態の変更の要求を判定する方法であって、
前記方法は、
基地局により、フィールド・ユニットに関連付けられた第1のエネルギ・レベルを有する少なくとも1つの第1の信号を受信するステップと、
前記基地局により、前記フィールド・ユニットに関連付けられた第2のエネルギ・レベルを有する少なくとも1つの第2の信号を受信するステップであって、前記第2のエネルギ・レベルは、前記第1のエネルギ・レベルより高いことを特徴とする、受信するステップと、
前記基地局により、前記第1の信号が、前記第1のエネルギ・レベルに基づいて、前記フィールド・ユニットによりトラフィック・データを転送するための要求でないことを判定し、前記基地局により、前記第2の信号が、前記第2のエネルギ・レベルに基づいて、前記フィールド・ユニットにより、トラフィック・データを転送するための要求であることを判定するステップと
を含み、
前記無線通信システムは、符号分割多重アクセス(CDMA)、あるいは、直交周波数分割多重(OFDM)無線通信システムであることを特徴とする方法。 - 無線通信システムのために、通信状態の変更の要求を判定する装置であって、
フィールド・ユニットに関連付けられ、第1のエネルギ・レベルを有する少なくとも1つの第1の信号を受信し、前記フィールド・ユニットに関連付けられ、第2のエネルギ・レベルを有する少なくとも1つの第2の信号を受信し、前記第2のエネルギ・レベルは、前記第1のエネルギ・レベルより高いことを特徴とする、受信機と、
前記第1の信号が、前記第1のエネルギ・レベルに基づいて、前記フィールド・ユニットによりトラフィック・データを転送するための要求でないことを判定し、前記第2の信号が、前記第2のエネルギ・レベルに基づいて、前記フィールド・ユニットにより、トラフィック・データを転送するための要求であることを判定するように構成されたプロセッサと
を備え、
前記第1の信号及び前記第2の信号が、タイム・スロット内で受信されることを特徴とする装置。 - 無線通信システムのために、通信状態の変更の要求を判定する装置であって、
フィールド・ユニットに関連付けられ、第1のエネルギ・レベルを有する少なくとも1つの第1の信号を受信し、前記フィールド・ユニットに関連付けられ、第2のエネルギ・レベルを有する少なくとも1つの第2の信号を受信し、前記第2のエネルギ・レベルは、前記第1のエネルギ・レベルより高いことを特徴とする、受信機と、
前記第1の信号が、前記第1のエネルギ・レベルに基づいて、前記フィールド・ユニットによりトラフィック・データを転送するための要求でないことを判定し、前記第2の信号が、前記第2のエネルギ・レベルに基づいて、前記フィールド・ユニットにより、トラフィック・データを転送するための要求であることを判定するように構成されたプロセッサと
を備え、
前記フィールド・ユニットが、より高いパワーで、前記第2の信号で送信する必要があることを示す電力コマンドを、前記フィールド・ユニットに転送するように構成された送信機をさらに備えることを特徴とする装置。 - 無線通信システムのために、通信状態の変更の要求を判定する装置であって、
フィールド・ユニットに関連付けられ、第1のエネルギ・レベルを有する少なくとも1つの第1の信号を受信し、前記フィールド・ユニットに関連付けられ、第2のエネルギ・レベルを有する少なくとも1つの第2の信号を受信し、前記第2のエネルギ・レベルは、前記第1のエネルギ・レベルより高いことを特徴とする、受信機と、
前記第1の信号が、前記第1のエネルギ・レベルに基づいて、前記フィールド・ユニットによりトラフィック・データを転送するための要求でないことを判定し、前記第2の信号が、前記第2のエネルギ・レベルに基づいて、前記フィールド・ユニットにより、トラフィック・データを転送するための要求であることを判定するように構成されたプロセッサと
を備え、
前記第2の信号が変調されないことを特徴とする装置。
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29792501P | 2001-06-13 | 2001-06-13 | |
US60/297,925 | 2001-06-13 | ||
US09/997,621 US6678260B2 (en) | 1997-12-17 | 2001-11-29 | System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system |
US09/997,621 | 2001-11-29 | ||
US37869702P | 2002-05-07 | 2002-05-07 | |
US60/378,697 | 2002-05-07 | ||
US10/171,080 US7221664B2 (en) | 1998-06-01 | 2002-06-12 | Transmittal of heartbeat signal at a lower level than heartbeat request |
US10/171,080 | 2002-06-12 |
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JP2006315039A Division JP4440250B2 (ja) | 2001-06-13 | 2006-11-22 | ハートビート・リクエストよりも低電力レベルでのハートビート信号の伝送 |
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JP2012000485A Division JP5254472B2 (ja) | 2001-06-13 | 2012-01-05 | ハートビート・リクエストよりも低電力レベルでのハートビート信号の伝送 |
JP2013032334A Division JP5450853B2 (ja) | 2001-06-13 | 2013-02-21 | ハートビート・リクエストよりも低電力レベルでのハートビート信号の伝送 |
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JP2010028832A JP2010028832A (ja) | 2010-02-04 |
JP5254178B2 true JP5254178B2 (ja) | 2013-08-07 |
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JP2006315039A Expired - Fee Related JP4440250B2 (ja) | 2001-06-13 | 2006-11-22 | ハートビート・リクエストよりも低電力レベルでのハートビート信号の伝送 |
JP2009245386A Expired - Lifetime JP5254178B2 (ja) | 2001-06-13 | 2009-10-26 | ハートビート・リクエストよりも低電力レベルでのハートビート信号の伝送 |
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JP2006315039A Expired - Fee Related JP4440250B2 (ja) | 2001-06-13 | 2006-11-22 | ハートビート・リクエストよりも低電力レベルでのハートビート信号の伝送 |
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