US7054282B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for power control on a discontinuous transmission channel in a CDMA system
Assignee: Google Technology Holdings LLC
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Filing: 2002-11-27
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Granted: 2006-05-30
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Expires: 2022-11-27
Abstract
Abstract A wireless communications system and methods therein uses information, such as frame sequence numbers to improve DCCH or SCH power control. The system includes a base transceiver station (BTS) ( 14 ) with a frame type determinator ( 32 ) for determining whether the recovered data frames are good, erased, or non-transmitted data frames. A selector distribution unit (SDU) ( 16 ) includes a frame type verification processing block ( 36 ) for verifying that the frame type determinations made by the frame type determinator are correct based on the sequence numbers from received good data frames, and a power control block ( 38 ) for transmitting subscriber device power control information based on frame type determination verifications made by the verification processing block.
Inventors
- 👤 Lee Proctor
- 👤 Eric Tsou
- 👤 Mark Hetherington
- 👤 John Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:16
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/30; H04W52/32; H04W52/325; H04W52/06; H04W52/12; H04W52/18; H04W52/20
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
117 words
A method of controlling power on a communications channel, comprising: receiving a first good frame prior to receiving a sequential burst of mostly one of erased frames and non-transmitted frames; monitoring received frames until a second good frame is detected as a currently received frame; evaluating past erased and non-transmitted frame type estimations made on previously received frames based on a difference in sequence numbers contained within the first and second good frames; determining whether past frame type estimation errors have occurred based on evaluating of past erased and non-transmitted frame type estimations; and if frame type estimation errors have occurred, causing power control corrective adjustments to be made to compensate for the frame type estimation errors.
Claim 2
Independent Claim
117 words
A method of controlling power on a communications channel, comprising: receiving a first good frame prior to receiving a sequential burst of mostly one of erased frames and non-transmitted frames; monitoring received frames until a second good frame is detected as a currently received frame; evaluating past erased and non-transmitted frame type estimations made on previously received frames based on a difference in sequence numbers contained within the first and second good frames; determining whether past frame type estimation errors have occurred based on evaluating of past erased and non-transmitted frame type estimations; and if frame type estimation errors have occurred, causing power control corrective adjustments to be made to compensate for the frame type estimation errors.
Claim 3
Dependent Claim
18 words
The method of claim 1 , wherein the communications channel comprises a code division multiple access (CDMA) channel.
Claim 4
Dependent Claim
28 words
The method of claim 1 , wherein the CDMA communication channel is at least one of dedicated control channel (DCCH), a supplemental (SCH) and supplemental code channel (SCCH).
Claim 5
Dependent Claim
18 words
The method of claim 1 , wherein the sequence numbers are associated with a radio link protocol (RLP).
Claim 6
Dependent Claim
77 words
The method of claim 4 , wherein the evaluating of past erased and non-transmitted frame type estimations made on previously received frames based an a difference in sequence numbers contained within the first and second good frames further comprises comparing one of a number of detected erased and non-transmitted frames to a difference in RLP sequence numbers between an RLP sequence number of the first good frame and the RLP sequence number of the second good frame.
Claim 7
Dependent Claim
72 words
The method of claim 1 , further comprising: prior to the monitoring of received frames until a second good frame is detected as a currently received frame, if all but one frame of the sequential burst of mostly one of erased frames and non-transmitted frames are detected as being erased frames, estimating that the one frame of the sequential burst of mostly erased frames or non-transmitted frames is also an erased frame.
Claim 8
Dependent Claim
70 words
The method of claim 1 further comprising: prior to the monitoring of received frames until a second good frame is detected as a currently received frame, if all but one frame of the sequential burst of mostly one of erased frames and non-transmitted frames are detected as being non-transmitted, estimating that the one frame of the sequential burst of mostly erased frames or non-transmitted frames is also a non-transmitted frame.
Claim 9
Dependent Claim
39 words
The method of claim 1 , wherein the sequential burst of mostly one of erased fames and non-transmitted frames comprises the first and second good frames and at least three frames transmitted immediately prior to the second good frame.
Claim 10
Dependent Claim
18 words
The method of claim 1 , wherein the received frames are received across a plurality of transmission channels.
Claim 11
Dependent Claim
38 words
The method of claim 9 where the plurality of transmission channels further comprises CDMA transmission channels comprising at least two of a Fundamental Channel, dedicated control channel (DCCH), a supplemental channel (SCH) and a supplemental control channel (SCCH).
Claim 12
Dependent Claim
24 words
The method of claim 9 , where the plurality of user transmission channels comprises of at least one DCCH and at least one SCCH.
Claim 13
Dependent Claim
141 words
A wireless communications system, comprising: a base transceiver station (BTS) including a transceiver for facilitating communications with wireless subscriber devices over a communications channel, a decoder for recovering data frames transmitted frame one or more of the wireless subscriber devices, and a frame type determinator for determining whether each of the recovered data frames are one of a good, an erased, and a non-transmitted data frames; and a selector distribution unit (SDU) for receiving recovered data frames from the frame type determinator as well as appended frame type indicators indicating one of good, erased and non-transmitted frame type determinations, for extracting radio link protocol (RLP) sequence numbers from the recovered data frames appended with good frame type indicators, for verifying that the frame type determinations are correct, and for providing subscriber device power control information based on frame type determination verifications.
Claim 14
Dependent Claim
141 words
A wireless communications system, comprising: a base transceiver station (BTS) including a transceiver for facilitating communications with wireless subscriber devices over a communications channel, a decoder for recovering data frames transmitted frame one or more of the wireless subscriber devices, and a frame type determinator for determining whether each of the recovered data frames are one of a good, an erased, and a non-transmitted data frames; and a selector distribution unit (SDU) for receiving recovered data frames from the frame type determinator as well as appended frame type indicators indicating one of good, erased and non-transmitted frame type determinations, for extracting radio link protocol (RLP) sequence numbers from the recovered data frames appended with good frame type indicators, for verifying that the frame type determinations are correct, and for providing subscriber device power control information based on frame type determination verifications.
Claim 15
Dependent Claim
43 words
The wireless communications system of claim 12 , further including a frame type verification block for verifying that the frame type determinations are correct, the verifying based on the RLP sequence numbers from the recovered data frames appended with good frame type indicators.
Claim 16
Dependent Claim
29 words
The wireless communications system of claim 12 , wherein the SDU is further for passing the recovered data frames appended with good frame type indicators to a user application.
Claim 17
Dependent Claim
33 words
The wireless communications system of claim 12 , wherein the transceiver in the BTS is for facilitating communication over at least one of a dedicated control channel (DCCH) and a supplemental channel (SCH).
Claim 18
Independent Claim
79 words
A method of controlling power on a communications channel comprising: determining a first frame type of a first received frame as being one of an erased frame type and a non-transmitted frame type; receiving a second received frame that is received after the first received frame; verifying the first frame type based at least in part on the second received frame; and increasing a transmission power if the first frame type is verified to be an erased frame type.
Claim 19
Independent Claim
79 words
A method of controlling power on a communications channel comprising: determining a first frame type of a first received frame as being one of an erased frame type and a non-transmitted frame type; receiving a second received frame that is received after the first received frame; verifying the first frame type based at least in part on the second received frame; and increasing a transmission power if the first frame type is verified to be an erased frame type.
Claim 20
Dependent Claim
24 words
The method of claim 16 further comprising maintaining a transmission power if the first frame type is verified to be a non-transmitted frame type.
Claim 21
Dependent Claim
34 words
The method of claim 16 wherein the verifying the first frame type further comprises: comparing a sequence number associated with the second received frame to a sequence number associated with a previously received frame.
Claim 22
Dependent Claim
32 words
The method of claim 18 wherein the verifying the first frame type further comprises: verifying the first frame type is the erased frame type when the comparing identifies a missing sequence number.
Claim 23
Dependent Claim
21 words
The method of claim 19 further comprising verifying a number of erased frames corresponding to a number of missing sequence numbers.
Claim 24
Dependent Claim
40 words
The method of claim 16 wherein the verifying the first frame type further comprises: determining a second frame type of the second received frame; and comparing the second frame type of the second received frame with the first frame type.
Claim 25
Dependent Claim
30 words
The method of claim 21 wherein the verifying the first frame type further comprises: comparing the first frame type with the frame type of a plurality of previously received frames.
Claim 26
Dependent Claim
46 words
The method of claim 21 wherein the verifying the first frame type further comprises verifying the first frame type as a non-transmitted frame when the frame type of the second received frame and a frame type of one or more previously received frames indicates non-transmitted frames.
Claim 27
Dependent Claim
46 words
The method of claim 21 wherein the verifying the first frame type further comprises verifying the first frame type as an erased frame when the frame type of the second received frame and a frame type of one or more previously received frames indicates erased frames.
References Cited (Backward Citations)
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