Prosecution Insights
Last updated: October 22, 2026
Application No. 18/853,216

CARRIER SWITCHING METHOD AND APPARATUS, TERMINAL, AND NETWORK SIDE DEVICE

Final Rejection §103
Filed
Oct 01, 2024
Priority
Apr 01, 2022 — CN 202210348961.6 +1 more
Examiner
NG, CHRISTINE Y
Art Unit
2464
Tech Center
2400 — Computer Networks
Assignee
Datang Mobile Communications Equipment Co., Ltd.
OA Round
2 (Final)
83%
Grant Probability
Favorable
3-4
OA Rounds
1y 0m
Est. Remaining
87%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allowance Rate
612 granted / 738 resolved
+24.9% vs TC avg
Minimal +4% lift
Without
With
+4.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
29 currently pending
Career history
775
Total Applications
across all art units

Statute-Specific Performance

§101
4.0%
-36.0% vs TC avg
§103
56.2%
+16.2% vs TC avg
§102
14.7%
-25.3% vs TC avg
§112
18.1%
-21.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 738 resolved cases

Office Action

§103
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Response to Arguments Applicant’s arguments, see response to 35 U.S.C. 112(b) rejections on page 13 lines 4-21 of arguments, filed 9/21/26, with respect to claims 2 and 15 have been fully considered and are persuasive. The 35 U.S.C. 112(b) rejections of claims 2 and 15 has been withdrawn. Applicant's arguments filed 9/21/26 with respect to the 35 U.S.C. 103 rejections of claims 1-18, 20, and 26 have been fully considered but they are not persuasive. On page 14 lines 6-23: Attorney argues that the rejections of independent claims 1 and 14 are moot in view of the amendments. Attorney argues “In particular, in the rejections of claims 4-7, the Office Action expressly states that the second “or” options of claims 4-7 - i.e., the two-step switched-from/switched-to carrier determinations now incorporated into claim 1 - are “not in reference”. Because the combination of Liu and Rastegardoost fails to teach at least these limitations of amended claim 1 (and of amended claim 14), the rejections of independent claims 1 and 14 cannot be maintained.” However, the amended independent claims 1 and 14 each still include both the first and the second of the “or” options of original claim 6, and both the first and the second of the “or” options of original claim 7. The original claim 6 and original claim 7 were both included into independent claims 1 and 14 without amendment. Refer to the updated rejections of claims 1 and 14. On page 15 lines 1-13: Attorney argues that neither Liu nor Rastegardoost teaches or suggests carrier switching among three or more carriers of different bands configured for one-port transmission. Attorney argues “Neither reference addresses a scenario of carrier switching among three or four carriers of different frequency bands, let alone a scenario in which each such carrier is configured for one-port transmission and the switched-from and switched-to carriers are determined in the claimed one-step or two-step manner.”. However, Liu et al disclose in Figure 7A carrier switching among three or more carriers (carries 1-4) of different bands (bands A-D, respectively) configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission). For example: Liu et al disclose in Figure 7A “when the second carrier set comprises a first carrier of a first band (Figure 7A: carrier 3 on band C) and a second carrier of a second band (Figure 7A: carrier 4 on band D) and the first carrier set comprises a third carrier of a third band (Figure 7A: carrier 1 on band A) and a fourth carrier (Figure 7A: carrier 2 on band B) of a fourth band; and when each of the first carrier, the second carrier, the third carrier and the fourth carrier is configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission)”. In Figure 6: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 1,3 is used for transmitting data after switching, wherein carriers 2 and 3 are involved in the switching since carrier 2 is switched to carrier 3. In Figure 7A: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 3,4 is used for transmitting data after switching, wherein carriers 1 and 3 are involved in the switching since carrier 1 is switched to carrier 3, and carriers 2 and 4 are involved in the switching since carrier 2 is switched to carrier 4. In Figure 7B: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 3,4 is used for transmitting data after switching, wherein carriers 1,2 and 3,4 are involved in the switching since carriers 1,2 are switched to carriers 3,4. On page 15 line 14 to page 16 line 12: Attorney argues that there is no motivation to combine Liu and Rastegardoost to arrive at the claimed invention. Liu et al disclose in Figure 6: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 1,3 is used for transmitting data after switching, wherein carriers 2 and 3 are involved in the switching since carrier 2 is switched to carrier 3. In Figure 7A: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 3,4 is used for transmitting data after switching, wherein carriers 1 and 3 are involved in the switching since carrier 1 is switched to carrier 3, and carriers 2 and 4 are involved in the switching since carrier 2 is switched to carrier 4. In Figure 7B: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 3,4 is used for transmitting data after switching, wherein carriers 1,2 and 3,4 are involved in the switching since carriers 1,2 are switched to carriers 3,4. Liu et al do not disclose … wherein during carrier switching, a terminal does not transmit data on the carrier involved in the switching. Rastegardoost et al disclose in Figures 1-32 and Sections 0291-0374 wherein a carrier pair includes a first carrier on a first band switching to a second carrier on a second band during a switching period. Sections 0135-0137, 0139, 0145-0153, 0158-0160, 0162, 0164, 0165, 0169, 0171, 0172, 0189, 0197-0201, 0204, 0209, 0210, 0238-0240, 0242-0244, and 0300-0305: UE does not transmit data during the switching period on any of the two carriers involved in the switching. So, Rastegardoost et al was used to teach that the UE does not transmit data during the switching period on any of the two carriers involved in the switching to enhance uplink transmission success and performance (Sections 0319 and 0400). By applying Rastegardoost et al to Liu et al, UE of Liu does not transmit data during the switching period between carrier pair during switching to enhance uplink transmission success and performance. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 1-5, 8-18, 20, and 26 are rejected under 35 U.S.C. 103 as being unpatentable over U.S. Publication No. 20240284426 to Liu et al in view of U.S. Publication No. 20240389129 to Rastegardoost et al (support in Provisional Application No. 63307847). Referring to claim 1, Liu et al disclose in Figures 1-14 a carrier switching method, comprising: Determining (Figures 6-7B; Sections 0135-0137) a carrier (Figure 6: carrier 2 is switched to carrier 3; Figure 7A : carrier 1 is switched to carrier 3 and carrier 2 is switched to carrier 4; Figure 7B: carriers 1,2 are switched to carriers 3,4), involved in switching, in a first carrier set (Figure 6: carrier set 1; Figure 7A : carrier set 1; Figure 7B: carrier set 1) for transmitting data before the switching and a second carrier set (Figure 6: carrier set 2; Figure 7A : carrier set 2; Figure 7B: carrier set 2) for transmitting data after the switching, wherein each of the first carrier set and the second carrier set comprises at least one carrier (Figure 6: carrier set 1 has 2 carriers 1,2 and carrier set 2 has 2 carriers 1,3; Figure 7A : carrier set 1 has 2 carriers 1,2 and carrier set 2 has 2 carriers 3,4; Figure 7B: carrier set 1 has 2 carriers 1,2 and carrier set 2 has 2 carriers 3,4), and at least one carrier of carriers contained in the first carrier set is different from carriers contained in the second carrier set (Figure 6: carrier 2 in carrier set 1 of carriers 1,2 is different from carriers 1,3 in carrier set 2; Figure 7A: carriers 1,2 in carrier set 1 are different from carriers 3,4 in carrier set 2; Figure 7B: carriers 1,2 in carrier set 1 are different from carriers 3,4 in carrier set 2). In Figure 6: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 1,3 is used for transmitting data after switching, wherein carriers 2 and 3 are involved in the switching since carrier 2 is switched to carrier 3. In Figure 7A: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 3,4 is used for transmitting data after switching, wherein carriers 1 and 3 are involved in the switching since carrier 1 is switched to carrier 3, and carriers 2 and 4 are involved in the switching since carrier 2 is switched to carrier 4. In Figure 7B: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 3,4 is used for transmitting data after switching, wherein carriers 1,2 and 3,4 are involved in the switching since carriers 1,2 are switched to carriers 3,4. … Wherein determining the carrier, involved in the switching, in the first carrier set for transmitting data before the switching and the second carrier set for transmitting data after the switching comprises: When the second carrier set comprises a first carrier of a first band (Figure 7A: carrier 3 on band C) and a second carrier of a second band (Figure 7A: carrier 4 on band D) and the first carrier set comprises a first carrier of a first band (Figure 7A: carrier 1 on band A) and a third carrier of a third band (Figure 7A: carrier 2 on band B) and when each of the first carrier, the second carrier and the third carrier is configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission), determining the carrier involved in the switching comprises: Using the third carrier as the switched-from carrier (Figure 7A: carrier 2 on band B), and using the second carrier as the switched-to carrier (Figure 7A: carrier 4 on band D). In Figure 7A: carrier 2 on band B is a switched-from carrier and carrier 4 on band D is a switched-to carrier since carrier 2 on band B is switched to carrier 4 on band D. Or, using the first carrier in the first carrier set as a first switched-from carrier, and using the second carrier as a first switched-to carrier, and using the third carrier as a second switched-from carrier and using the first carrier in the second carrier set as the second switched-to carrier (not in reference; claim is in “or” form). Or, When the second carrier set comprises a first carrier of a first band (Figure 7A: carrier 3 on band C) and a second carrier of a second band (Figure 7A: carrier 4 on band D) and the first carrier set comprises a third carrier of a third band (Figure 7A: carrier 1 on band A) and a fourth carrier (Figure 7A: carrier 2 on band B) of a fourth band; and when each of the first carrier, the second carrier, the third carrier and the fourth carrier is configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission), determining the carrier involved in the switching comprises: Using the third carrier as a first switched-from carrier (Figure 7A: carrier 1 on band A), using the first carrier as a first switched-to carrier (Figure 7A: carrier 3 on band C), using the fourth carrier (Figure 7A: carrier 2 on band B) as a second switched-from carrier, and using the second carrier as a second switched-to carrier (Figure 7A: carrier 4 on band D). In Figure 7A: carrier 1 on band A is a switched-from carrier and carrier 3 on band C is a switched-to carrier since carrier 1 on band A is switched to carrier 3 on band C, and carrier 2 on band B is a switched-from carrier and carrier 4 on band D is a switched-to carrier since carrier 2 on band B is switched to carrier 4 on band D. Or, using the third carrier as a first switched-from carrier, using the second carrier as a first switched-to carrier, using the fourth carrier as a second switched-from carrier, and using the first carrier as a second switched-to carrier (not in reference; claim is in “or” form). Refer to Sections 0030-0342. Liu et al do not disclose … wherein during carrier switching, a terminal does not transmit data on the carrier involved in the switching. Rastegardoost et al disclose in Figures 1-32 and Sections 0291-0374 wherein a carrier pair includes a first carrier on a first band switching to a second carrier on a second band during a switching period. For example: carrier pair#1 is carrier 1 on band 1 switching to carrier 2 on band 2, and carrier pair#2 is carrier 1 on band 1 switching to carrier 3 on band 3. Sections 0135-0137, 0139, 0145-0153, 0158-0160, 0162, 0164, 0165, 0169, 0171, 0172, 0189, 0197-0201, 0204, 0209, 0210, 0238-0240, 0242-0244, and 0300-0305: UE does not transmit data during the switching period on any of the two carriers involved in the switching. Section 0293: “The UE may not transmit during the uplink transmission switching gap/period. The UE may not transmit on any uplink carrier during the uplink transmission switching gap/period. The UE may not transmit during the uplink transmission switching gap/period, on any of two uplink carriers involved in the uplink transmission switching. … The UE may omit (at least a portion, e.g., partially and/or fully) an uplink transmission during the uplink transmission switching gap/period. The UE may omit the uplink transmission on any uplink carrier during the uplink transmission switching gap/period. The UE may omit the uplink transmission on any of the two uplink carriers involved in the uplink transmission switching during the uplink transmission switching gap/period.”. Sections 0319 and 0400: By not transmitting on the uplink carriers involved in the switching during the switching period, successful uplink transmission and enhanced uplink performance, such as throughput and/or reliability of uplink transmissions, is achieved. Refer to Sections 0046-0416. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to include … wherein during carrier switching, a terminal does not transmit data on the carrier involved in the switching. One would have been motivated to do so to achieve successful uplink transmission and enhanced uplink performance, since UE does not transmit on uplink carriers during switching to allow uplink carriers to perform the switching. Referring to claim 2, Liu et al disclose in Figures 1-14 wherein a quantity of carriers that are different between the first carrier set and the second carrier set (Figure 6: carrier set 1 has 2 carriers 1,2 and carrier set 2 has 2 carriers 1,3; Figure 7A : carrier set 1 has 2 carriers 1,2 and carrier set 2 has 2 carriers 3,4; Figure 7B: carrier set 1 has 2 carriers 1,2 and carrier set 2 has 2 carriers 3,4) is greater than or equal to 3. Each of carrier set 1 and carrier set 2 have a quantity of carriers. The number of carriers that are different between carrier set 1 and carrier set 2 can be any number. Figure 6: 1 carrier (carrier 2) in carrier set 1 of carriers 1,2 is different from carriers 1,3 in carrier set 2; Figure 7A: 2 carriers (carriers 1,2) in carrier set 1 are different from carriers 3,4 in carrier set 2; Figure 7B: 2 carriers (carriers 1,2) in carrier set 1 are different from carriers 3,4 in carrier set 2. However, the number of carriers that are different between carrier set 1 and carrier set 2 can be any number, including the claimed “greater than or equal to 3”. Sections 0103-0105, 0146, 0165, 0169, 0171, 0243, 0244, 0276, 0277, and 0304 disclose that carrier set 1 and carrier set 2 comprises any number of carriers, so the number of carriers that are different between carrier set 1 and carrier set 2 can be any number. Refer to Sections 0030-0342. Referring to claim 3, Liu et al disclose in Figures 1-14 wherein determining the carrier, involved in the switching, in the first carrier set for transmitting data before the switching and the second carrier set for transmitting data after the switching further comprises: When each carrier contained in the first carrier set is configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission) and each carrier contained in the second carrier set is also configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission), determining a carrier from the first carrier set as a switched-from carrier (Figure 6: carrier 2; Figure 7A: carrier 1,2) involved in the switching, and determining a carrier from the second carrier set as a switched-to carrier (Figure 6: carrier 3; Figure 7A: carrier 3,4) involved in the switching. Using the determined switched-from carrier and the determined switched-to carrier as carriers involved in the switching. In Figure 6: carrier 2 is a switched-from carrier and carrier 3 is a switched-to carrier since carrier 2 is switched to carrier 3. In Figure 7A: carrier 1 is a switched-from carrier and carrier 3 is a switched-to carrier since carrier 1 is switched to carrier 3, and carrier 2 is a switched-from carrier and carrier 4 is a switched-to carrier since carrier 2 is switched to carrier 4. Refer to Sections 0030-0342. Referring to claim 4, Liu et al disclose in Figures 1-14 wherein determining the carrier, involved in the switching, in the first carrier set for transmitting data before the switching and the second carrier set for transmitting data after the switching further comprises: When the second carrier set comprises a first carrier of a first band (Figure 7A: carrier 3 on band C), the first carrier set comprises a second carrier of a second band (Figure 7A: carrier 1 on band A) and a third carrier of a third band (Figure 7A: carrier 2 on band B), and when each of the first carrier, the second carrier and the third carrier is configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission), determining the carrier involved in the switching comprises: Using the second carrier as the switched-from carrier (Figure 7A: carrier 1 on band A), and using the first carrier as the switched-to carrier (Figure 7A: carrier 3 on band C). In Figure 7A: carrier 1 on band A is a switched-from carrier and carrier 3 on band C is a switched-to carrier since carrier 1 on band A is switched to carrier 3 on band C. Or, using the third carrier as the switched-from carrier, and using the first carrier as the switched-to carrier (not in reference; claim is in “or” form). Refer to Sections 0030-0342. Referring to claim 5, Liu et al disclose in Figures 1-14 wherein determining the carrier, involved in the switching, in the first carrier set for transmitting data before the switching and the second carrier set for transmitting data after the switching further comprises: When the second carrier set comprises a second carrier of a second band (Figure 7A: carrier 3 on band C) and a third carrier of a third band (Figure 7A: carrier 4 on band D) and the first carrier set comprises a first carrier of a first band (Figure 7A: carrier 1 on band A) and when each of the second carrier, the third carrier and the first carrier is configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission), determining the carrier involved in the switching comprises: Using the first carrier as the switched-from carrier (Figure 7A: carrier 1 on band A), and using the second carrier as the switched-to carrier (Figure 7A: carrier 3 on band C). In Figure 7A: carrier 1 on band A is a switched-from carrier and carrier 3 on band C is a switched-to carrier since carrier 1 on band A is switched to carrier 3 on band C. Or, using the first carrier as the switched-from carrier, and using the third carrier as the switched-to carrier (not in reference; claim is in “or” form). Refer to Sections 0030-0342. Referring to claim 8, Liu et al disclose in Figures 1-14 wherein determining the carrier involved in the switching comprises: Determining carrier switching relationship between carriers in the first carrier set and carriers in the second carrier set. Sections 0092, 0120-0153, 0202, 0203, 0222, 0264, and 0290: BS transmits DCI to UE indicating switching information as shown in Tables 6a-14 for switching from a first carrier of a first carrier set to a second carrier of a carrier set for a duration of carrier switching. The switching information indicates the carriers of each carrier set. For example in Tables 6a-6b and Figure 7A: the switching information indicates switching from first carrier index 1 of carrier set 1 to third carrier index 3 of carrier set 2 for a first duration of carrier switching, and switching from second carrier index 2 of carrier set 1 to fourth carrier index 4 of carrier set 2 for a second duration of carrier switching. Determining the carrier involved in the switching according to the carrier switching relationship. Based on the switching information in DCI as shown in Tables 6a-14 and Figure 7A, UE switches from first carrier index 1 of carrier set 1 to third carrier index 3 of carrier set 2 for a first duration of carrier switching, and switches from second carrier index 2 of carrier set 1 to fourth carrier index 4 of carrier set 2 for a second duration of carrier switching. Refer to Sections 0030-0342. Referring to claim 9, Liu et al disclose in Figures 1-14 wherein the carrier switching relationship comprises at least one of the following information: Correspondence between transmission channels (transmission links) used by different carriers to transmit data. Sections 0069, 0096, 0100, 0101, 0135-0137, 0145-0146, 0148, 0150, 0152, 0158-0160, 0162, 0197, 0198, 0226, 0234, 0238-0240, 0242, 0266, 0274, 0275, 0292, and 0300-0303: BS transmits DCI to UE indicating switching information, wherein the switching information indicates a transmission link corresponding to at least one of the N carriers is switched to transmission links corresponding to the R carriers, and also indicates information such as a total number of transmission links corresponding to the N carriers, the number of transmission links corresponding to each of the N carriers, a total number of transmission links corresponding to the R carriers, and the number of transmission links corresponding to each of the R carriers. Switching information can be, for example: a total of two transmission links corresponding to two carriers are switched to another carrier, or a total of two transmission links corresponding to two carriers are switched to two transmission links corresponding to another two carriers. A determined carrier switching pair comprising two carriers (Tables 6a-14 for switching from a first carrier to a second carrier) for performing the switching. Sections 0092, 0120-0153, 0202, 0203, 0222, 0264, and 0290: BS transmits DCI to UE indicating switching information as shown in Tables 6a-14 for switching from a first carrier to a second carrier for a duration of carrier switching. For example in Tables 6a-6b: the switching information indicates switching from first carrier index 1 to third carrier index 3 for a first duration of carrier switching, and switching from second carrier index 2 to fourth carrier index 4 for a second duration of carrier switching. A switching order among different carrier switching pairs (not in reference; claim only requires “at least one of the following methods”). Refer to Sections 0030-0342. Referring to claim 10, Liu et al disclose in Figures 1-14 wherein the carrier switching relationship is determined by at least one of the following methods: Determination based on preset carrier switching pair information (indicated in Tables 6a-14 for switching from a first carrier to a second carrier). Sections 0092, 0120-0153, 0202, 0203, 0222, 0264, and 0290: BS transmits DCI to UE indicating switching information as shown in Tables 6a-14 for switching from a first carrier to a second carrier for a duration of carrier switching. For example in Tables 6a-6b: the switching information indicates switching from first carrier index 1 to third carrier index 3 for a first duration of carrier switching, and switching from second carrier index 2 to fourth carrier index 4 for a second duration of carrier switching. Determination based on a rule of minimum signal loss (not in reference; claim only requires “at least one of the following methods”). Determination according to a scheduling signaling of DCI (scheduling information of DCI). Sections 0092, 0120-0153, 0202, 0203, 0222, 0264, and 0290: BS transmits DCI to UE indicating switching information as shown in Tables 6a-14 for switching from a first carrier to a second carrier for a duration of carrier switching. For example in Tables 6a-6b: the switching information indicates switching from first carrier index 1 to third carrier index 3 for a first duration of carrier switching, and switching from second carrier index 2 to fourth carrier index 4 for a second duration of carrier switching. Refer to Sections 0030-0342. Referring to claim 11, Liu et al disclose in Figures 1-14 wherein the carrier switching pair information (Tables 6a-14) comprises: Carrier information before the switching (Tables 6a-14: carrier before switching); carrier information after the switching (Tables 6a-14: carrier after switching); carrier switching information involved in the switching (Tables 6a-14: duration of carrier switching). Sections 0092, 0120-0153, 0202, 0203, 0222, 0264, and 0290: BS transmits DCI to UE indicating switching information as shown in Tables 6a-14 for switching from a first carrier to a second carrier for a duration of carrier switching. For example in Tables 6a-6b: the switching information indicates switching from first carrier index 1 to third carrier index 3 for a first duration of carrier switching, and switching from second carrier index 2 to fourth carrier index 4 for a second duration of carrier switching. Refer to Sections 0030-0342. Referring to claim 12, Liu et al do not disclose wherein determination based on the rule of minimum signal loss comprises: determining a carrier switching group according to at least one carrier for transmitting data before the switching and at least one carrier for transmitting data after the switching, wherein the carrier switching group comprises a carrier before the switching and a carrier after the switching; determining a signal interruption duration when performing carrier switching of each carrier switching group; according to a rule that the signal interruption duration is shortest, determining the carrier switching group for involved in the switching. However, this limitation is based on claim 10, wherein the limitation “determination based on a rule of minimum signal loss” is not disclosed by Liu et al, since claim 10 only requires “at least one of the following methods”. Referring to claim 13, Liu et al disclose in Figures 1-14 wherein the scheduling signaling of the DCI carries a switching indicator, wherein the switching indicator comprises: A switched-to carrier (carrier after switching) involved in the switching, and a switched-from carrier (carrier before switching) used before the switching, wherein a transmission channel (transmission link) corresponding to the switched-from carrier is converted into a transmission channel (transmission link) corresponding to the switched-to carrier after the switching. Sections 0092, 0120-0153, 0202, 0203, 0222, 0264, and 0290: BS transmits DCI to UE indicating switching information as shown in Tables 6a-14 for switching from a first carrier to a second carrier for a duration of carrier switching. For example in Tables 6a-6b: the switching information indicates switching from first carrier index 1 to third carrier index 3 for a first duration of carrier switching, and switching from second carrier index 2 to fourth carrier index 4 for a second duration of carrier switching. Sections 0135-0137, 0139, 0145-0153, 0158-0160, 0162, 0164, 0165, 0169, 0171, 0172, 0189, 0197-0201, 0204, 0209, 0210, 0238-0240, 0242-0244, and 0300-0305: transmission links of a carrier before switching is converted into a transmission link of a carrier after switching. For example: one transmission link corresponding to one carrier is switched to another carrier; before switching, the number of transmission links corresponding to carrier 1 is 1, and the number of transmission links corresponding to carrier 2 is 1; after switching, carrier 1 is switched to carrier 3, and the number of transmission links corresponding to carrier 3 is 1. (claimed “wherein a transmission channel corresponding to the switched-from carrier is converted into a transmission channel corresponding to the switched-to carrier after the switching”). For another example: a total of two transmission links corresponding to two carriers are switched to another carrier; before switching, the number of transmission links of carrier 1 is 1, and the number of transmission links of carrier 2 is 1; after switching, carrier 1 is switched to carrier 3, and the number of transmission links of carrier 3 is 2 (claimed “wherein a transmission channel corresponding to the switched-from carrier is converted into a transmission channel corresponding to the switched-to carrier after the switching”). Or, a switched-from carrier (carrier before switching) used before the switching, wherein the transmission channel corresponding to the switched-from carrier is converted into the transmission channel corresponding to the switched-to carrier after the switching. Sections 0135-0137, 0139, 0145-0153, 0158-0160, 0162, 0164, 0165, 0169, 0171, 0172, 0189, 0197-0201, 0204, 0209, 0210, 0238-0240, 0242-0244, and 0300-0305: transmission links of a carrier before switching is converted into a transmission link of a carrier after switching. For example: one transmission link corresponding to one carrier is switched to another carrier; before switching, the number of transmission links corresponding to carrier 1 is 1, and the number of transmission links corresponding to carrier 2 is 1; after switching, carrier 1 is switched to carrier 3, and the number of transmission links corresponding to carrier 3 is 1. (claimed “wherein a transmission channel corresponding to the switched-from carrier is converted into a transmission channel corresponding to the switched-to carrier after the switching”). For another example: a total of two transmission links corresponding to two carriers are switched to another carrier; before switching, the number of transmission links of carrier 1 is 1, and the number of transmission links of carrier 2 is 1; after switching, carrier 1 is switched to carrier 3, and the number of transmission links of carrier 3 is 2 (claimed “wherein a transmission channel corresponding to the switched-from carrier is converted into a transmission channel corresponding to the switched-to carrier after the switching”). Refer to Sections 0030-0342. Referring to claim 14, Liu et al disclose in Figures 1-14 a carrier switching method, comprising: Determining (Figures 6-7B; Sections 0135-0137) by a network-side device (BS) a carrier (Figure 6: carrier 2 is switched to carrier 3; Figure 7A : carrier 1 is switched to carrier 3 and carrier 2 is switched to carrier 4; Figure 7B: carriers 1,2 are switched to carriers 3,4), involved in switching, in a scheduled first carrier set (Figure 6: carrier set 1; Figure 7A : carrier set 1; Figure 7B: carrier set 1) for transmitting data before the switching and a scheduled second carrier set (Figure 6: carrier set 2; Figure 7A : carrier set 2; Figure 7B: carrier set 2) for transmitting data after the switching, wherein each of the first carrier set and the second carrier set comprises at least one carrier (Figure 6: carrier set 1 has 2 carriers 1,2 and carrier set 2 has 2 carriers 1,3; Figure 7A : carrier set 1 has 2 carriers 1,2 and carrier set 2 has 2 carriers 3,4; Figure 7B: carrier set 1 has 2 carriers 1,2 and carrier set 2 has 2 carriers 3,4), and at least one carrier of carriers contained in the first carrier set is different from carriers contained in the second carrier set (Figure 6: carrier 2 in carrier set 1 of carriers 1,2 is different from carriers 1,3 in carrier set 2; Figure 7A: carriers 1,2 in carrier set 1 are different from carriers 3,4 in carrier set 2; Figure 7B: carriers 1,2 in carrier set 1 are different from carriers 3,4 in carrier set 2). In Figure 6: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 1,3 is used for transmitting data after switching, wherein carriers 2 and 3 are involved in the switching since carrier 2 is switched to carrier 3. In Figure 7A: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 3,4 is used for transmitting data after switching, wherein carriers 1 and 3 are involved in the switching since carrier 1 is switched to carrier 3, and carriers 2 and 4 are involved in the switching since carrier 2 is switched to carrier 4. In Figure 7B: carrier set 1 comprising carriers 1,2 is used for transmitting data before switching and carrier set 2 comprising carriers 3,4 is used for transmitting data after switching, wherein carriers 1,2 and 3,4 are involved in the switching since carriers 1,2 are switched to carriers 3,4. Refer to Sections 0030-0342. … Wherein determining the carrier, involved in the switching, in the scheduled first carrier set for transmitting data before the switching and the scheduled second carrier set for transmitting data after the switching comprises: When the second carrier set comprises a first carrier of a first band (Figure 7A: carrier 3 on band C) and a second carrier of a second band (Figure 7A: carrier 4 on band D) and the first carrier set comprises a first carrier of a first band (Figure 7A: carrier 1 on band A) and a third carrier of a third band (Figure 7A: carrier 2 on band B) and when each of the first carrier, the second carrier and the third carrier is configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission), determining the carrier involved in the switching comprises: Using the third carrier as the switched-from carrier (Figure 7A: carrier 2 on band B), and using the second carrier as the switched-to carrier (Figure 7A: carrier 4 on band D). In Figure 7A: carrier 2 on band B is a switched-from carrier and carrier 4 on band D is a switched-to carrier since carrier 2 on band B is switched to carrier 4 on band D. Or, using the first carrier in the first carrier set as a first switched-from carrier, and using the second carrier as a first switched-to carrier, and using the third carrier as a second switched-from carrier and using the first carrier in the second carrier set as the second switched-to carrier (not in reference; claim is in “or” form). Or, When the second carrier set comprises a first carrier of a first band (Figure 7A: carrier 3 on band C) and a second carrier of a second band (Figure 7A: carrier 4 on band D) and the first carrier set comprises a third carrier of a third band (Figure 7A: carrier 1 on band A) and a fourth carrier (Figure 7A: carrier 2 on band B) of a fourth band; and when each of the first carrier, the second carrier, the third carrier and the fourth carrier is configured for one-port transmission (Sections 0036 and 0073: each carrier can use one port for transmission), determining the carrier involved in the switching comprises: Using the third carrier as a first switched-from carrier (Figure 7A: carrier 1 on band A), using the first carrier as a first switched-to carrier (Figure 7A: carrier 3 on band C), using the fourth carrier (Figure 7A: carrier 2 on band B) as a second switched-from carrier, and using the second carrier as a second switched-to carrier (Figure 7A: carrier 4 on band D). In Figure 7A: carrier 1 on band A is a switched-from carrier and carrier 3 on band C is a switched-to carrier since carrier 1 on band A is switched to carrier 3 on band C, and carrier 2 on band B is a switched-from carrier and carrier 4 on band D is a switched-to carrier since carrier 2 on band B is switched to carrier 4 on band D. Or, using the third carrier as a first switched-from carrier, using the second carrier as a first switched-to carrier, using the fourth carrier as a second switched-from carrier, and using the first carrier as a second switched-to carrier (not in reference; claim is in “or” form). Refer to Sections 0030-0342. Liu et al do not disclose … wherein during carrier switching, the network-side device does not receive data on the carrier involved in the switching. Rastegardoost et al disclose in Figures 1-32 and Sections 0291-0374 wherein a carrier pair includes a first carrier on a first band switching to a second carrier on a second band during a switching period. For example: carrier pair#1 is carrier 1 on band 1 switching to carrier 2 on band 2, and carrier pair#2 is carrier 1 on band 1 switching to carrier 3 on band 3. Sections 0135-0137, 0139, 0145-0153, 0158-0160, 0162, 0164, 0165, 0169, 0171, 0172, 0189, 0197-0201, 0204, 0209, 0210, 0238-0240, 0242-0244, and 0300-0305: UE does not transmit data during the switching period on any of the two carriers involved in the switching. Section 0293: “The UE may not transmit during the uplink transmission switching gap/period. The UE may not transmit on any uplink carrier during the uplink transmission switching gap/period. The UE may not transmit during the uplink transmission switching gap/period, on any of two uplink carriers involved in the uplink transmission switching. … The UE may omit (at least a portion, e.g., partially and/or fully) an uplink transmission during the uplink transmission switching gap/period. The UE may omit the uplink transmission on any uplink carrier during the uplink transmission switching gap/period. The UE may omit the uplink transmission on any of the two uplink carriers involved in the uplink transmission switching during the uplink transmission switching gap/period.”. Sections 0319 and 0400: By not transmitting on the uplink carriers involved in the switching during the switching period, successful uplink transmission and enhanced uplink performance, such as throughput and/or reliability of uplink transmissions, is achieved. Refer to Sections 0046-0416. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to include … wherein during carrier switching, the network-side device does not receive data on the carrier involved in the switching. One would have been motivated to do so to achieve successful uplink transmission and enhanced uplink performance, since UE does not transmit on uplink carriers during switching to allow uplink carriers to perform the switching. Referring to claim 15, refer to the rejection of claim 2. Referring to claim 16, refer to the rejection of claim 3. Referring to claim 17, refer to the rejection of claim 8. Referring to claim 18, Liu et al disclose in Figures 1-14 wherein the carrier switching relationship comprises at least one of the following information: Correspondence between transmission channels (transmission links) used by different carriers to transmit data. Sections 0069, 0096, 0100, 0101, 0135-0137, 0145-0146, 0148, 0150, 0152, 0158-0160, 0162, 0197, 0198, 0226, 0234, 0238-0240, 0242, 0266, 0274, 0275, 0292, and 0300-0303: BS transmits DCI to UE indicating switching information, wherein the switching information indicates a transmission link corresponding to at least one of the N carriers is switched to transmission links corresponding to the R carriers, and also indicates information such as a total number of transmission links corresponding to the N carriers, the number of transmission links corresponding to each of the N carriers, a total number of transmission links corresponding to the R carriers, and the number of transmission links corresponding to each of the R carriers. Switching information can be, for example: a total of two transmission links corresponding to two carriers are switched to another carrier, or a total of two transmission links corresponding to two carriers are switched to two transmission links corresponding to another two carriers. A determined carrier switching pair comprising two carriers (Tables 6a-14 for switching from a first carrier to a second carrier) for performing the switching. Sections 0092, 0120-0153, 0202, 0203, 0222, 0264, and 0290: BS transmits DCI to UE indicating switching information as shown in Tables 6a-14 for switching from a first carrier to a second carrier for a duration of carrier switching. For example in Tables 6a-6b: the switching information indicates switching from first carrier index 1 to third carrier index 3 for a first duration of carrier switching, and switching from second carrier index 2 to fourth carrier index 4 for a second duration of carrier switching. A switching order among different carrier switching pairs (not in reference; claim only requires “at least one of the following methods”). And/or wherein the carrier switching pair information comprises: carrier information before the switching (Tables 6a-14: carrier before switching); carrier information after the switching (Tables 6a-14: carrier after switching); carrier switching information involved in the switching (Tables 6a-14: duration of carrier switching). Sections 0092, 0120-0153, 0202, 0203, 0222, 0264, and 0290: BS transmits DCI to UE indicating switching information as shown in Tables 6a-14 for switching from a first carrier to a second carrier for a duration of carrier switching. For example in Tables 6a-6b: the switching information indicates switching from first carrier index 1 to third carrier index 3 for a first duration of carrier switching, and switching from second carrier index 2 to fourth carrier index 4 for a second duration of carrier switching. Refer to Sections 0030-0342. Referring to claim 20, Liu et al disclose in Figures 1-14 a terminal (UE) comprising: A memory (memory 1320, 1420), a transceiver (transceiver 1101, 1330), a processor (processor 1310, 1410), wherein the memory is configured to store a computer program (memory 1320, 1420 stores a computer program with instructions); the transceiver is configured to transmit and receive data under control of the processor (transceiver 1101, 1330 transmits and receives data controlled by processor 1310, 1410); the processor is configured to read a computer program in the memory and perform steps of the carrier switching method according to claim 1. Refer to the rejection of claim 1. Referring to claim 26, Liu et al disclose in Figures 1-14 a network-side device (BS), comprising: A memory (memory 1320, 1420), a transceiver (transceiver 1201, 1330), a processor (processor 1310, 1410), wherein the memory is configured to store a computer program (memory 1320, 1420 stores a computer program with instructions); the transceiver is configured to transmit and receive data under control of the processor (transceiver 1201, 1330 transmits and receives data controlled by processor 1310, 1410); the processor is configured to read a computer program in the memory and perform the following operations (memory 1320, 1420 stores a computer program with instructions executed by processor 1310, 1410 to perform BS functions). Refer to the rejection of claim 14. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. U.S. Publication No. 20230232420 to Babaei et al disclose in Figures 1-32 and Sections 0232, 0246-0248, 0260-0262, 0278, 0299, 0311-0312, and 0323 disclose wherein a wireless device receives a DCI comprising scheduling information for transmission of a first uplink transmission via a first cell/carrier and a second uplink transmission via a second cell/carrier; the wireless device determines the location of a switching gap/period for switching from the first uplink transmission to the second uplink transmission; uplink transmission on any of the first cell/carrier and the second cell/carrier may not be performed during the switching gap/period based on the determined location of the switching gap/period. Refer to Sections 0037-0381. U.S. Publication No. 20200092045 to Wang et al disclose in Figures 1-14 and Sections 0032, 0053, 0075, and 0139 wherein the network uses RRC Reconfiguration to switch UE between two ULs; the old carrier that the UE is using before the switch and the new carrier that the UE switches to, may have different numerologies, transmission durations or carrier bandwidth. Refer to Sections 0067-0177. U.S. Publication No. 20230164802 to Hu et al disclose in Figures 1-9 and Sections 0026, 0114, 0147, and 0149 wherein UE does not send the uplink transmission on two uplink carriers before and after switching within a predetermined time interval when the uplink carrier is switched. Refer to Sections 0072-0220. 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 CHRISTINE Y NG whose telephone number is (571)272-3124. The examiner can normally be reached M-F 12pm-9pm. 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, Ricky Ngo can be reached at 5712723139. 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. /Christine Ng/ Examiner, AU 2464 September 30, 2026
Read full office action

Prosecution Timeline

Oct 01, 2024
Application Filed
Aug 05, 2026
Non-Final Rejection mailed — §103
Sep 21, 2026
Response Filed
Oct 05, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12772070
AUTOMATED WIRELESS ROUTER POSITIONING SYSTEM
2y 5m to grant Granted Oct 20, 2026
Patent 12764821
METHOD AND APPARATUS FOR RECOVERY FROM FALLBACK FOR CELLULAR INTERNET OF THINGS DEVICE
4y 2m to grant Granted Oct 13, 2026
Patent 12757092
SYSTEMS AND METHODS FOR PERFORMING ROAMING AND HANDOVER LOAD BALANCING IN A MULTICELL NETWORK
2y 9m to grant Granted Oct 06, 2026
Patent 12739769
INFORMATION INDICATION METHOD AND APPARATUS
3y 9m to grant Granted Sep 15, 2026
Patent 12726258
FLIGHT VEHICLE, COMMUNICATION MANAGEMENT SYSTEM, CONTROL SYSTEM, AND CONTROL METHOD
3y 3m to grant Granted Sep 01, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
83%
Grant Probability
87%
With Interview (+4.3%)
3y 1m (~1y 0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 738 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month