Method and apparatus for silent frame detection in a GSM communications system
AssigneeSpreadtrum Communications Corporation
InventorsJingdong Lin, Yan Zhang, Jiayi Zhuang, Jian Cheng
Life of this patent
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Abstract
A method of detecting a silent frame at a mobile station in a GSM transmission is disclosed. The method comprises first receiving a data burst intended for the mobile station. Then, a signal-to-interference-and-noise ratio (SINR) is determined for the data burst. If the SINR is below a predetermined threshold, then the data burst is determined as from a silent frame.
Claims10
A method of detecting a silent frame at a mobile station in a GSM transmission comprising:
- (a) receiving a data burst intended for said mobile station;
- (b) determining a signal-to-interference-and-noise ratio (SINR) for said data burst;
- and
- (c) if said SINR is below a predetermined threshold, then identifying said data burst as from a silent frame.
An apparatus for detecting a silent frame at a mobile station in a GSM transmission comprising:
- (a) means for receiving a data burst intended for said mobile station;
- (b) means for determining a signal-to-interference-and-noise ratio (SINR) for said data burst;
- and
- (c) means for determining if said SINR is below a predetermined threshold and then identifying said data burst as from a silent frame.
A method of detecting a silent frame at a mobile station in a GSM transmission comprising:
- (a) receiving a data burst intended for said mobile station;
- (b) determining a signal-to-interference-and-noise ratio (SINR) for said data burst as:
- SINR
- =
- SLa
- NLa
- =
- 1
- 148
-
- ∑
- k
- =
- 1
- 148
-
-
-
- f
-
- (
- k
- )
-
- 2
- 1
- 148
-
- ∑
- k
- =
- 1
- 148
-
-
-
- n
-
- (
- k
- )
-
- 2
- ;
- and
- (c) outputting a silent frame indication signal (SI) determined by
- SI
- =
- {
- 1
- ,
- if
-
-
- SINR
- <
- T
- 0
- ,
- if
-
-
- SINR
- ≥
- T
- where if SI is 1, then identifying said data burst as from a silent frame.
Dependencies are inferred from the claim text.