Prosecution Insights
Last updated: April 19, 2026
Application No. 17/129,493

PRE-CODER SELECTION BASED ON RESOURCE BLOCK GROUPING

Non-Final OA §103
Filed
Dec 21, 2020
Examiner
GILES, EBONI N
Art Unit
2622
Tech Center
2600 — Communications
Assignee
Texas Instruments Incorporated
OA Round
7 (Non-Final)
63%
Grant Probability
Moderate
7-8
OA Rounds
3y 7m
To Grant
72%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allow Rate
440 granted / 697 resolved
+1.1% vs TC avg
Moderate +9% lift
Without
With
+8.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
33 currently pending
Career history
730
Total Applications
across all art units

Statute-Specific Performance

§101
2.0%
-38.0% vs TC avg
§103
78.5%
+38.5% vs TC avg
§102
9.1%
-30.9% vs TC avg
§112
6.3%
-33.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 697 resolved cases

Office Action

§103
Notice of Pre-AIA or AIA Status The present application is being examined under the pre-AIA first to invent provisions. DETAILED ACTION This office action is in response to the RCE filed 11/4/2025 in which Claims 1-20 are pending. Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 12/3/2025 has been entered. Response to Arguments Applicant’s arguments, see pages 5-7, filed 11/4/2025, with respect to the rejection(s) of claim(s) 1, 12 under 35 U.S.C. 103 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of Shao. Applicant’s arguments, see page 7, filed 11/4/2025, with respect to the rejection(s) of claim(s) 5, 16 under 35 U.S.C. 103 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of Tong et al. Applicant's arguments filed 11/4/2025 have been fully considered but they are not persuasive. Applicant argues on page 6, with respect to Claims 3, 4, 14, 15, that Dabak fails to disclose “the number of contiguous resource blocks corresponding to each group is varied”. Examiner disagrees and points to Dabak’s teaching that orthogonal frequency division multiplexing (OFDM) to distribute data bits among evenly-spaced carrier frequencies, or "tones". For each of the R data streams, a corresponding bit allocation block 260, 262, 264 apportions bits among the available tones, see ¶ 0025; size of the tone group precoding and distribution matrices may be reduced by reducing the number of tones in each tone group, see ¶ 0042. Examiner construes that the number of streams and bits required to be distributed determine the number of adjacent tones required, e.g. contiguous resource blocks, illustrating various examples where the size of the tone group determines the number of the contiguous resource blocks. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of pre-AIA 35 U.S.C. 103(a) which forms the basis for all obviousness rejections set forth in this Office action: (a) A patent may not be obtained though the invention is not identically disclosed or described as set forth in section 102, if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under pre-AIA 35 U.S.C. 103(a) are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. This application currently names joint inventors. In considering patentability of the claims under pre-AIA 35 U.S.C. 103(a), the examiner presumes that the subject matter of the various claims was commonly owned at the time any inventions covered therein were made absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and invention dates of each claim that was not commonly owned at the time a later invention was made in order for the examiner to consider the applicability of pre-AIA 35 U.S.C. 103(c) and potential pre-AIA 35 U.S.C. 102(e), (f) or (g) prior art under pre-AIA 35 U.S.C. 103(a). Claims 1-4, 6-15, 17-20 are rejected under pre-AIA 35 U.S.C. 103(a) as being unpatentable over U.S. Patent Publication 2006/0029157 to Dabak in view of U.S. Patent 8,639,190 to Gore et al (“Gore”) in further view of U.S. Patent Publication 2005/0058212 to Shao. As to Claim 1, Dabak teaches a receiver, comprising: a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates (P transmit antennas 210-214 send signals that are detected by Q receive antennas 220-224, see ¶ 0021; channel estimation may be determined by the receiver (e.g., in block 252) and communicated to the transmitter by return channel, see ¶ 0024); and a feedback generator portion configured to provide a pre-coder selection for data transmission to the transmitter (The precoding matrix selection is communicated from the receiver to the transmitter by a return channel, e.g. feedback, see ¶ 0023), wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks into a plurality of groups (group adjacent, e.g. contiguous, tones together and apply one antenna preceding matrix 266 to each tone group; divides 256 available tones into 32 groups of eight tones each [group of contiguous resource blocks], and accordingly, only 32 antenna precoding matrices are employed, e.g. each antenna precoding matrix is associated with a group of eight tones. The set of antenna preceding matrices 266 [precoders] produce a set of frequency coefficients for each transmit signal, see ¶ 0027). Dabak does not explicitly disclose wherein the pre-coder selection is based on channel estimates and wherein providing the pre-coder selection for data transmission to the transmitter includes providing indices of pre-coders for the plurality of groups for transmission to the transmitter. Gore teaches wherein the pre-coder selection is based on channel estimates and wherein providing the pre-coder selection for data transmission to the transmitter includes providing indices of pre-coders for the plurality of groups for transmission to the transmitter (a feedback channel sometimes called a channel quality indication (CQI) channel 406 may be used to provide feedback of preceding, e.g. an index(ces), vector(s), or matrix(ces)…one or more precoding index(ces), vector(s), or matrix(ces) may be reported for multiple segments for a single user, even those on which the user is not scheduled, depending on the structure. That is, if each segment, has its own feedback channel a user may provide feedback, e.g. precoding index(ces), vector(s), or matrix(ces), for each of the segments on its or another segments feedback channel, see Col. 5, lines 25-28, 32-38; At 504, precoding matrix(ces) or vector(s) are determined or calculated. The determination may be based upon a selected CQI-precoding matrix calculation from a look-up table or some other operation. Further, this may be calculated for one or more segment, or only the segment that the terminal is scheduled. This may be determined by the terminal, or part of the assignment or overhead information provide by the access point to the terminal, see Col. ; the selected precoding matrix(ces) or vector(s) are feedback to the access point via one or more feedback channels, see Col. 5, line 62 – Col. 6, line 2; Means 606, which may be in communication with both means 702 and 704, may transmit the selected precoding matrix(ces) or vector(s) as feedback to the access point via one or more feedback channels. As discussed above, the feedback channels used may relate to the segment, or segments, to which the precoding information relate or some other channels, see Col. 6, lines 22-28). Before the effective filing date of the claimed invention, it would have been obvious to one of ordinary skill in the art to modify Dabak with Gore to teach wherein the pre-coder selection is based on channel estimates and wherein providing the pre-coder selection for data transmission to the transmitter includes providing indices of pre-coders for the plurality of groups for transmission to the transmitter. The suggestion/motivation would have been in order for the subscriber selecting a set of candidate subcarriers, providing feedback information on the set of candidate subcarriers to the base station, and receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the subscriber (see ¶ 0008). Dabak and Gore do not expressly disclose wherein at least two indices of the indices of the pre-coders for the plurality of groups are jointly encoded. Shao teaches wherein at least two indices of the indices of the pre-coders for the plurality of groups are jointly encoded (precoder 106 may encode an MxG number of parallel symbol vectors 105 [at least two indices of the indices of the precoders for the plurality of groups are jointly encoded], and each parallel symbol vector 105 may have MxK symbols. In these embodiments, partitioner 108 may group precoded symbol vectors 107 into G groups 109 of the parallel symbol vectors 107. Each of groups 109 may have M of the precoded symbol vectors 107, see ¶ 0020; precoded symbol vectors 207 may be grouped into two or more groups 209, see ¶ 0021). Before the effective filing date of the claimed invention, it would have been obvious to one of ordinary skill in the art to modify Dabak and Gore with Shao to teach wherein at least two indices of the indices of the pre-coders for the plurality of groups are jointly encoded. The suggestion/motivation would have been in order for precoded symbol vectors to be grouped into two or more groups (see ¶ 0021). As to Claim 2, Dabak, Gore and Shao depending on Claim 1, Dabak teaches wherein the pre-coder selection provides a single pre-coder for each group of contiguous resource blocks (group adjacent, e.g. contiguous, tones together and apply one antenna preceding matrix 266 to each tone group; divides 256 available tones into 32 groups of eight tones each [group of contiguous resource blocks], and accordingly, only 32 antenna precoding matrices are employed, e.g. each antenna precoding matrix is associated with a group of eight tones. The set of antenna preceding matrices 266 [precoders] produce a set of frequency coefficients for each transmit signal, see ¶ 0027). As to Claim 3, Dabak, Gore and Shao depending on Claim 2, Dabak teaches wherein a number of contiguous resource blocks corresponding to each group is varied (orthogonal frequency division multiplexing (OFDM) to distribute data bits among evenly-spaced carrier frequencies, or "tones". For each of the R data streams, a corresponding bit allocation block 260, 262, 264 apportions bits among the available tones, see ¶ 0025. Examiner construes that the number of streams and bits required to be distributed determine the number of adjacent tones required, e.g. contiguous resource blocks; size of the tone group precoding and distribution matrices may be reduced by reducing the number of tones in each tone group, see ¶ 0042) and configured by the transmitter employing signaling to the receiver via a broadcast or a common control channel (a separate channel may be used to communicate the matrix selection to the receiver. The separate channel [broadcast channel] can take the form of a narrowband signal broadcast from a single antenna at a frequency that is dedicated to carrying configuration information to the receiver, see ¶ 0024). As to Claim 4, Dabak, Gore and Shao depending on Claim 2, Dabak teaches wherein a number of contiguous resource blocks corresponding to each group is varied (orthogonal frequency division multiplexing (OFDM) to distribute data bits among evenly-spaced carrier frequencies, or "tones". For each of the R data streams, a corresponding bit allocation block 260, 262, 264 apportions bits among the available tones. Further, frequency coefficients from multiple data streams may be partitioned into tone groups, see ¶ 0003, 0025. Examiner construes that the number of streams and bits required to be distributed determine the number of adjacent tones required; size of the tone group precoding and distribution matrices may be reduced by reducing the number of tones in each tone group, see ¶ 0042) and configured by a network employing signaling to the receiver via a higher layer signaling (a separate channel may be used to communicate the matrix selection to the receiver. The separate channel [broadcast channel] can take the form of a narrowband signal broadcast from a single antenna at a frequency that is dedicated to carrying configuration information, e.g. higher layer signaling, to the receiver, see ¶ 0024). As to Claim 6, Dabak, Gore and Shao depending on Claim 1, Dabak teaches wherein the pre- coder selection provides a set of pre-coders corresponding to a combination of groups of contiguous resource blocks (group adjacent, e.g. contiguous, tones together and apply one antenna preceding matrix 266 to each tone group; divides 256 available tones into 32 groups of eight tones each, and accordingly, only 32 antenna precoding matrices are employed, e.g. each antenna precoding matrix is associated with a group of eight tones. The set of antenna preceding matrices 266 [precoders] produce a set of frequency coefficients for each transmit signal, see ¶ 0027. Examiner construes the set of antenna precoding matrices correspond to varied combinations of tones in each tone group). As to Claim 7, Dabak, Gore and Shao depending on Claim 1, Dabak teaches wherein the pre- coder selection is jointly encoded to achieve feedback transmission compression (a MIMO system having closed loop selection of combined antenna and tone group precoding matrices. Block 344 performs channel estimation and selection of the combined precoding and combined distribution matrices based on the channel estimation, see ¶ 0041; Each matrix element may be more coarsely quantized to reduce the number of bits. In those embodiments having tone group preceding, the size of the tone group precoding and distribution matrices (and hence the overall number of matrix elements) may be reduced by reducing the number of tones in each tone group. The tone group precoding and distribution matrices can be entirely eliminated by employing combined tone group and antenna precoding... if the matrices for adjacent tone groups are expected to be similar, the set of matrices may be efficiently compressed [feedback transmission compression] by using a differential encoding technique, in which each matrix is given by its difference from the previous matrix. Alternatively, the same matrix may be used for adjacent tone groups, see ¶ 0042; The precoding matrix selection is communicated from the receiver to the transmitter by a return channel...minimize the bandwidth requirements for the return channel, it is desirable to minimize the number of bits used to communicate the selected precoding matrix to the transmitter [feedback transmission compression], see ¶ 0023). As to Claim 8, Dabak, Gore and Shao depending on Claim 1, Dabak teaches wherein the pre- coder selection is jointly encoded with a channel quality indicator (a MIMO system having closed loop selection of combined antenna and tone group precoding matrices. Block 344 performs channel estimation and selection of the combined precoding and combined distribution matrices based on the channel estimation, e.g. jointly encoded with channel quality indicator, see ¶ 0041). As to Claim 9, Dabak, Gore and Shao depending on Claim 1, Dabak teaches wherein the pre- coder selection is based on one selected from the group consisting of: a sum throughput; a worst case throughput; and a specified maximum error rate (The outputs of the tone group precoding blocks are then taken as the frequency coefficients for multiple transmit signals, and precoded across multiple antennas by a set of antenna precoding matrices 266. In this manner, the data bits are distributed across multiple frequencies and multiple antennas (multiple transmission paths) to provide a high degree of resistance to fading while maximizing the communications bandwidth of the system [sum throughput], see ¶ 0036; The precoding matrix selection is communicated from the receiver to the transmitter by a return channel...minimize the bandwidth requirements for the return channel, it is desirable to minimize the number of bits used to communicate the selected precoding matrix to the transmitter, see ¶ 0023. Examiner construes that the pre-coder selection is performed with compressed data in a system where the communications bandwidth is maximized). As to Claim 10, Dabak, Gore and Shao depending on Claim 1, Dabak teaches wherein the grouping of the resource blocks is variable or fixed based on signaling support (orthogonal frequency division multiplexing (OFDM) to distribute data bits among evenly-spaced carrier frequencies, or "tones". For each of the R data streams, a corresponding bit allocation block 260, 262, 264 apportions bits among the available tones, see ¶ 0025; group adjacent, e.g. contiguous, tones together and apply one antenna preceding matrix 266 to each tone group; divides 256 available tones into 32 groups of eight tones each, and accordingly, only 32 antenna precoding matrices are employed, e.g. each antenna precoding matrix is associated with a group of eight tones. The set of antenna preceding matrices 266 [precoders] produce a set of frequency coefficients for each transmit signal, see ¶ 0027; a separate channel may be used to communicate the matrix selection to the receiver. The separate channel [broadcast channel] can take the form of a narrowband signal broadcast from a single antenna at a frequency that is dedicated to carrying configuration information, e.g. higher layer signaling, to the receiver, see ¶ 0024; Examiner construes the set of antenna precoding matrices correspond to varied combinations of tones in each tone group). As to Claim 11, Dabak, Gore and Shao depending on Claim 1, Dabak teaches wherein the receiver operates in an OFDM or OFDMA system (multiple Input, Multiple Output (MIMO) refers to the use of multiple transmitters and receivers (multiple antennas) on wireless devices... Various wireless standards that are based on MIMO orthogonal frequency-division multiplexing (OFDM) technology...closed-loop processing, whereby channel-state information is referred from the receiver to the transmitter to precode the transmitted data for better reception, see ¶ 0002). As to Claim 12, Dabak teaches a method of operating a receiver, comprising: providing channel estimates employing transmission signals from a transmitter having multiple antennas (P transmit antennas 210-214 send signals that are detected by Q receive antennas 220-224, see ¶ 0021; channel estimation may be determined by the receiver (e.g., in block 252) and communicated to the transmitter by return channel, see ¶ 0024); and feeding back a pre-coder selection for data transmission to the transmitter (The precoding matrix selection is communicated from the receiver to the transmitter by a return channel, e.g. feedback, see ¶ 0023), wherein the pre-coder selection corresponds to a grouping of frequency- domain resource blocks into a plurality of groups (group adjacent, e.g. contiguous, tones together and apply one antenna preceding matrix 266 to each tone group; divides 256 available tones into 32 groups of eight tones each [group of contiguous resource blocks], and accordingly, only 32 antenna precoding matrices are employed, e.g. each antenna precoding matrix is associated with a group of eight tones. The set of antenna preceding matrices 266 [precoders] produce a set of frequency coefficients for each transmit signal, see ¶ 0027). Dabak does not explicitly disclose wherein the pre-coder selection is based on channel estimates and wherein providing the pre-coder selection for data transmission to the transmitter includes providing indices of pre-coders for the plurality of groups for transmission to the transmitter. Gore teaches wherein the pre-coder selection is based on channel estimates and wherein providing the pre-coder selection for data transmission to the transmitter includes providing indices of pre-coders for the plurality of groups for transmission to the transmitter (a feedback channel sometimes called a channel quality indication (CQI) channel 406 may be used to provide feedback of preceding, e.g. an index(ces), vector(s), or matrix(ces)…one or more precoding index(ces), vector(s), or matrix(ces) may be reported for multiple segments for a single user, even those on which the user is not scheduled, depending on the structure. That is, if each segment, has its own feedback channel a user may provide feedback, e.g. precoding index(ces), vector(s), or matrix(ces), for each of the segments on its or another segments feedback channel, see Col. 5, lines 25-28, 32-38; At 504, precoding matrix(ces) or vector(s) are determined or calculated. The determination may be based upon a selected CQI-precoding matrix calculation from a look-up table or some other operation. Further, this may be calculated for one or more segment, or only the segment that the terminal is scheduled. This may be determined by the terminal, or part of the assignment or overhead information provide by the access point to the terminal, see Col. ; the selected precoding matrix(ces) or vector(s) are feedback to the access point via one or more feedback channels, see Col. 5, line 62 – Col. 6, line 2; Means 606, which may be in communication with both means 702 and 704, may transmit the selected precoding matrix(ces) or vector(s) as feedback to the access point via one or more feedback channels. As discussed above, the feedback channels used may relate to the segment, or segments, to which the precoding information relate or some other channels, see Col. 6, lines 22-28). Before the effective filing date of the claimed invention, it would have been obvious to one of ordinary skill in the art to modify Dabak and Gore with Shao to teach wherein the pre-coder selection is based on channel estimates and wherein providing the pre-coder selection for data transmission to the transmitter includes providing indices of pre-coders for the plurality of groups for transmission to the transmitter. The suggestion/motivation would have been in order for the subscriber selecting a set of candidate subcarriers, providing feedback information on the set of candidate subcarriers to the base station, and receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the subscriber (see ¶ 0008). As to Claim 13, Dabak, Gore and Shao depending on Claim 12, Dabak teaches wherein the pre-coder selection provides a single pre-coder for each group of contiguous resource blocks (group adjacent, e.g. contiguous, tones together and apply one antenna preceding matrix 266 to each tone group; divides 256 available tones into 32 groups of eight tones each [group of contiguous resource blocks], and accordingly, only 32 antenna precoding matrices are employed, e.g. each antenna precoding matrix is associated with a group of eight tones. The set of antenna preceding matrices 266 [precoders] produce a set of frequency coefficients for each transmit signal, see ¶ 0027). As to Claim 14, Dabak, Gore and Shao depending on Claim 13, Dabak teaches wherein a number of contiguous resource blocks corresponding to each group is varied (orthogonal frequency division multiplexing (OFDM) to distribute data bits among evenly-spaced carrier frequencies, or "tones". For each of the R data streams, a corresponding bit allocation block 260, 262, 264 apportions bits among the available tones, see ¶ 0025. Examiner construes that the number of streams and bits required to be distributed determine the number of adjacent tones required, e.g. contiguous resource blocks; size of the tone group precoding and distribution matrices may be reduced by reducing the number of tones in each tone group, see ¶ 0042) and configured by the transmitter employing signaling to the receiver via a broadcast or a common control channel (a separate channel may be used to communicate the matrix selection to the receiver. The separate channel [broadcast channel] can take the form of a narrowband signal broadcast from a single antenna at a frequency that is dedicated to carrying configuration information to the receiver, see ¶ 0024). As to Claim 15, Dabak, Gore and Shao depending on Claim 13, Dabak teaches wherein a number of contiguous resource blocks corresponding to each group is varied (orthogonal frequency division multiplexing (OFDM) to distribute data bits among evenly-spaced carrier frequencies, or "tones". For each of the R data streams, a corresponding bit allocation block 260, 262, 264 apportions bits among the available tones. Further, frequency coefficients from multiple data streams may be partitioned into tone groups, see ¶ 0003, 0025. Examiner construes that the number of streams and bits required to be distributed determine the number of adjacent tones required; size of the tone group precoding and distribution matrices may be reduced by reducing the number of tones in each tone group, see ¶ 0042) and configured by a network employing signaling to the receiver via a higher layer signaling (a separate channel may be used to communicate the matrix selection to the receiver. The separate channel [broadcast channel] can take the form of a narrowband signal broadcast from a single antenna at a frequency that is dedicated to carrying configuration information, e.g. higher layer signaling, to the receiver, see ¶ 0024). As to Claim 17, Dabak, Gore and Shao depending on Claim 12, Dabak teaches wherein the pre- coder selection provides a set of pre-coders corresponding to a combination of groups of contiguous resource blocks (group adjacent, e.g. contiguous, tones together and apply one antenna preceding matrix 266 to each tone group; divides 256 available tones into 32 groups of eight tones each, and accordingly, only 32 antenna precoding matrices are employed, e.g. each antenna precoding matrix is associated with a group of eight tones. The set of antenna preceding matrices 266 [precoders] produce a set of frequency coefficients for each transmit signal, see ¶ 0027. Examiner construes the set of antenna precoding matrices correspond to varied combinations of tones in each tone group). As to Claim 18, Dabak, Gore and Shao depending on Claim 12, Dabak teaches wherein the pre- coder selection is jointly encoded to achieve feedback transmission compression (a MIMO system having closed loop selection of combined antenna and tone group precoding matrices. Block 344 performs channel estimation and selection of the combined precoding and combined distribution matrices based on the channel estimation, see ¶ 0041; Each matrix element may be more coarsely quantized to reduce the number of bits. In those embodiments having tone group preceding, the size of the tone group precoding and distribution matrices (and hence the overall number of matrix elements) may be reduced by reducing the number of tones in each tone group. The tone group precoding and distribution matrices can be entirely eliminated by employing combined tone group and antenna precoding... if the matrices for adjacent tone groups are expected to be similar, the set of matrices may be efficiently compressed [feedback transmission compression] by using a differential encoding technique, in which each matrix is given by its difference from the previous matrix. Alternatively, the same matrix may be used for adjacent tone groups, see ¶ 0042; The precoding matrix selection is communicated from the receiver to the transmitter by a return channel...minimize the bandwidth requirements for the return channel, it is desirable to minimize the number of bits used to communicate the selected precoding matrix to the transmitter [feedback transmission compression], see ¶ 0023). As to Claim 19, Dabak, Gore and Shao depending on Claim 12, Dabak teaches wherein the pre- coder selection is jointly encoded with a channel quality indicator (a MIMO system having closed loop selection of combined antenna and tone group precoding matrices. Block 344 performs channel estimation and selection of the combined precoding and combined distribution matrices based on the channel estimation, e.g. jointly encoded with channel quality indicator, see ¶ 0041). As to Claim 20, Dabak, Gore and Shao depending on Claim 12, Dabak teaches wherein the pre- coder selection is based on one selected from the group consisting of: a sum throughput; a worst case throughput; and a specified maximum error rate (The outputs of the tone group precoding blocks are then taken as the frequency coefficients for multiple transmit signals, and precoded across multiple antennas by a set of antenna precoding matrices 266. In this manner, the data bits are distributed across multiple frequencies and multiple antennas (multiple transmission paths) to provide a high degree of resistance to fading while maximizing the communications bandwidth of the system [sum throughput], see ¶ 0036; The precoding matrix selection is communicated from the receiver to the transmitter by a return channel...minimize the bandwidth requirements for the return channel, it is desirable to minimize the number of bits used to communicate the selected precoding matrix to the transmitter, see ¶ 0023. Examiner construes that the pre-coder selection is performed with compressed data in a system where the communications bandwidth is maximized). Claims 5, 16 are rejected under pre-AIA 35 U.S.C. 103(a) as being unpatentable over U.S. Patent Publication 2006/0029157 to Dabak in view of U.S. Patent 8,639,190 to Gore et al (“Gore”) in further view of U.S. Patent Publication 2005/0058212 to Shao and in further view of U.S. Patent Publication 2007/0263735 to Tong et al (“Tong”). As to Claim 5, Dabak, Gore and Shao depending on Claim 1, Dabak, Gore and Shao do not expressly disclose wherein the pre-coder selection provides a set of pre-coders corresponding to a subgroup of resource blocks contained in each group of contiguous resource blocks. Tong teaches wherein the pre-coder selection provides a set of pre-coders corresponding to a subgroup of resource blocks contained in each group of contiguous resource blocks (Nused used sub-carriers are preferably first partitioned into bands, each having 4 bins, Each bin is constructed by 3 contiguous sub-bins (tile) [subgroup of resource blocks contained in each group of contiguous resource blocks], see ¶ 0240; a space-time coding operation on a per sub-carrier basis using a pre-coding vector or matrix, see ¶ 0047). Before the effective filing date of the claimed invention, it would have been obvious to one of ordinary skill in the art to modify Dabak, Gore and Shao to teach wherein the pre-coder selection provides a set of pre-coders corresponding to a subgroup of resource blocks contained in each group of contiguous resource blocks. The suggestion/motivation would have been in order to assign different sub-block patterns to different users (see ¶ 0033). As to Claim 16, Dabak, Gore and Shao depending on Claim 12, Dabak, Gore and Shao do not expressly disclose wherein the pre-coder selection provides a set of pre-coders corresponding to a subgroup of resource blocks contained in each group of contiguous resource blocks. Tong teaches wherein the pre-coder selection provides a set of pre-coders corresponding to a subgroup of resource blocks contained in each group of contiguous resource blocks (Nused used sub-carriers are preferably first partitioned into bands, each having 4 bins, Each bin is constructed by 3 contiguous sub-bins (tile) [subgroup of resource blocks contained in each group of contiguous resource blocks], see ¶ 0240; a space-time coding operation on a per sub-carrier basis using a pre-coding vector or matrix, see ¶ 0047). Before the effective filing date of the claimed invention, it would have been obvious to one of ordinary skill in the art to modify Dabak, Gore and Shao to teach wherein the pre-coder selection provides a set of pre-coders corresponding to a subgroup of resource blocks contained in each group of contiguous resource blocks. The suggestion/motivation would have been in order to assign different sub-block patterns to different users (see ¶ 0033). Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to EBONI N GILES whose telephone number is (571)270-7453. The examiner can normally be reached Monday - Friday 9 am - 6 pm EST. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Patrick Edouard can be reached on (571)272-7603. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /EBONI N GILES/ Examiner, Art Unit 2622 /PATRICK N EDOUARD/ Supervisory Patent Examiner, Art Unit 2622
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Prosecution Timeline

Dec 21, 2020
Application Filed
Feb 22, 2022
Non-Final Rejection — §103
Sep 02, 2022
Response Filed
Dec 03, 2022
Final Rejection — §103
Jun 13, 2023
Request for Continued Examination
Jun 14, 2023
Response after Non-Final Action
Jun 17, 2023
Non-Final Rejection — §103
Dec 28, 2023
Response Filed
Apr 06, 2024
Final Rejection — §103
Oct 11, 2024
Notice of Allowance
May 12, 2025
Request for Continued Examination
May 13, 2025
Response after Non-Final Action
May 14, 2025
Non-Final Rejection — §103
Aug 19, 2025
Response Filed
Aug 30, 2025
Final Rejection — §103
Nov 04, 2025
Response after Non-Final Action
Dec 03, 2025
Request for Continued Examination
Dec 12, 2025
Response after Non-Final Action
Dec 13, 2025
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12602962
CONTACTLESS OPTICAL INTERNET OF THINGS USER IDENTIFICATION DEVICE AND SYSTEM
2y 5m to grant Granted Apr 14, 2026
Patent 12599835
WEARABLE CONTROLLER
2y 5m to grant Granted Apr 14, 2026
Patent 12596895
LOW POWER BEACON SCHEDULING
2y 5m to grant Granted Apr 07, 2026
Patent 12575179
DISPLAY DEVICE AND METHOD FOR DRIVING DISPLAY DEVICE
2y 5m to grant Granted Mar 10, 2026
Patent 12573294
SYSTEMS AND METHODS FOR ALERTING PERSONS OF APPROACHING VEHICLES
2y 5m to grant Granted Mar 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

7-8
Expected OA Rounds
63%
Grant Probability
72%
With Interview (+8.6%)
3y 7m
Median Time to Grant
High
PTA Risk
Based on 697 resolved cases by this examiner. Grant probability derived from career allow rate.

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