INTRA-BAND UL Tx SWITCHING IN COMBINATION WITH INTER-BAND UL Tx SWITCHING
Patent Information
- Application Number
- PCT/CN2025/085458
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-10-01
Smart Images

Figure CN2025085458_01102026_PF_FP_ABST
Abstract
Description
Intra-Band UL Tx Switching in Combination with Inter-Band UL Tx SwitchingTechnical Field
[0001] The present disclosure generally relates to wireless communication, and in particular, to intra-band UL Tx switching in combination with inter-band UL Tx switching.Background
[0002] A user equipment (UE) may be equipped with multiple transmission (Tx) / reception (Rx) chains. The Tx / Rx chains may be switched or re-tuned to perform inter-band switching, e.g., tuning a Tx / Rx chain to a first band and switching the Tx / Rx chain to a second band. While this type of inter-band switching is helpful in some scenarios, other types of switching may be more useful in other scenarios. For example, there may be scenarios where intra-band Tx / Rx switching may be useful, e.g., switching from a first carrier to a second carrier in the same band. However, there are currently no procedures for a UE to implement inter-band switching with intra-band switching.Summary
[0003] Some example embodiments are related to an apparatus having memory coupled to processing circuitry, the processing circuitry configured to determine a transmission (Tx) switching configuration comprising information associated with Tx switching operations, wherein the information comprises an indication of a first carrier of a first band, a first carrier of a second band and a second carrier of the second band to which one or more Tx chains are to be tuned during the Tx switching operations and a number of ports on the first carrier of the first band, the first carrier of the second band and the second carrier of the second band that are to be used for transmission, wherein the first carrier of the second band and the second carrier of the second band are non-contiguous carriers in the frequency domain, process, based on signaling from a network, Tx scheduling information comprising an indication of Tx resources and perform the Tx switching operations according to the Tx switching configuration to perform Tx operations using the Tx resources.
[0004] Other example embodiments are related to a method for determining a transmission (Tx) switching configuration comprising information associated with Tx switching operations, wherein the information comprises an indication of a first carrier of a first band, a first carrier of a second band and a second carrier of the second band to which one or more Tx chains are to be tuned during the Tx switching operations and a number of ports on the first carrier of the first band, the first carrier of the second band and the second carrier of the second band that are to be used for transmission, wherein the first carrier of the second band and the second carrier of the second band are non-contiguous carriers in the frequency domain, processing, based on signaling from a network, Tx scheduling information comprising an indication of Tx resources and performing the Tx switching operations according to the Tx switching configuration to perform Tx operations using the Tx resources.Brief Description of the Drawings
[0005] Fig. 1 shows an example network arrangement according to various example embodiments.
[0006] Fig. 2 shows an example user equipment (UE) according to various example embodiments.
[0007] Fig. 3 shows an example base station according to various example embodiments.
[0008] Fig. 4 shows a table illustrating example cases for switched uplink (UL) operation with 1Tx-2Tx according to various example embodiments.
[0009] Fig. 5 shows a table illustrating example cases for dual UL operation with 1Tx-2Tx according to various example embodiments.
[0010] Fig. 6 shows a table illustrating example cases for switched UL operation with 2Tx-2Tx according to various example embodiments.
[0011] Fig. 7 shows a table 700 illustrating example cases for dual UL operation with 2Tx-2Tx according to various example embodiments.
[0012] Fig. 8 shows an example method of Tx switching operations according to various example embodiments.Detailed Description
[0013] The example embodiments may be further understood with re ference to the following description and the related appended drawings, wherein like elements are provided with the same re ference numerals. The example embodiments relate to inter-band Tx switching in combination with intra-band Tx switching where the intra-band Tx switching is on non-contiguous carriers.
[0014] The example embodiments are described with regard to a UE.However, reference to a UE is merely provided for illustrative purposes. The example embodiments may be utilized with any electronic component that may establish a connection to an accessory device and is configured with the hardware, software, and / or firmware to exchange information and data with accessory devices. Therefore, the UE as described herein is used to represent any electronic component.
[0015] The example embodiments are also described with reference to a 5G New Radio (NR) network. However, the example embodiments may also be implemented in other types of networks, including but not limited to LTE networks, future evolutions of the cellular protocol (e.g., 5G-advanced networks, 6G networks, 7G networks, etc. ) , or any other type of network.
[0016] The example embodiments are described with reference to Tx switching, e.g., the UE switching the Tx / Rx chain using inter-band Tx switching and / or intra-band Tx switching to perform Tx operations with the network. However, the principles of the example embodiments described herein for Tx switching may also be applied to inter-band Rx switching and / or intra-band Rx switching.
[0017] The example embodiments are also described with reference to a UE having two (2) Tx / Rx chains. However, the example embodiments may also be extended and be implemented in a UE that includes more than two (2) Tx / Rx chains. Those skilled in the art will understand how to make this extension based on the description of the example embodiments below.
[0018] The example embodiments relate to a UE being configured with inter-band Tx switching in combination with intra-band Tx switching where the intra-band Tx switching is on non-contiguous carriers. The configuration includes information related to tuning Tx chains to a correct carrier / band, a number of ports that are to be used for transmission on each carrier / band and applying switching gaps for the Tx switching. Each of these example embodiments will be described in greater detail below.
[0019] Fig. 1 shows an example network arrangement 100 according to various example embodiments. The example network arrangement 100 includes a UE 110. The UE 110 may be any type of electronic component that is configured to communicate via a network, e.g., mobile phones, tablet computers, desktop computers, smartphones, embedded devices, wearables, Internet of Things (IoT) devices, etc. An actual network arrangement may include any number of UEs being used by any number of users. Thus, the example of one UE 110 is merely provided for illustrative purposes.
[0020] The UE 110 may be configured to communicate with one or more networks. In the example of the network arrangement 100, the network with which the UE 110 may wirelessly communicate is a 5G NR radio access network (RAN) 120. The UE 110 may also communicate with other types of networks (e.g., 5G cloud RAN, a next generation RAN (NG-RAN) , a legacy cellular network, etc. ) and the UE 110 may also communicate with networks over a wired connection. With regard to the example embodiments, the UE 110 may establish a connection with the 5G NR RAN 120. Therefore, the UE 110 may have a 5G NR chipset to communicate with the NR RAN 120.
[0021] The 5G NR RAN 120 may be portions of a cellular network that may be deployed by a network carrier (e.g., Verizon, AT&T, T-Mobile, etc. ) . The RAN 120 may include cells or base stations that are configured to send and receive traffic from UEs that are equipped with the appropriate cellular chip set. In this example, the 5G NR RAN 120 includes the gNB 120A. However, reference to a gNB is merely provided for illustrative purposes, any appropriate base station or cell may be deployed (e.g., Node Bs, eNodeBs, HeNBs, eNBs, gNBs, gNodeBs, macrocells, microcells, small cells, femtocells, etc. ) .
[0022] Any association procedure may be performed for the UE 110 to connect to the 5G NR RAN 120. For example, as discussed above, the 5G NR RAN 120 may be associated with a particular network carrier where the UE 110 and / or the user thereof has a contract and credential information (e.g., stored on a S IM card) . Upon detecting the presence of the 5G NR RAN 120, the UE 110 may transmit the corresponding credential information to associate with the 5G NR RAN 120. More specifically, the UE 110 may associate with a specific cell (e.g., gNB 120A) .
[0023] The network arrangement 100 also includes a cellular core network 130, the Internet 140, an I P Multimedia Subsystem (IMS) 150, and a network services backbone 160. The cellular core network 130 manages the traffic that flows between the cellular network and the Internet 140. The IMS 150 may be generally described as an architecture for delivering multimedia services to the UE 110 using the IP protocol. The IMS 150 may communicate with the cellular core network 130 and the Internet 140 to provide the multimedia services to the UE 110. The network services backbone 160 is in communication either directly or indirectly with the Internet 140 and the cellular core network 130. The network services backbone 160 may be generally described as a set of components (e.g., servers, network storage arrangements, etc. ) that implement a suite of services that may be used to extend the functionalities of the UE 110 in communication with the various networks.
[0024] Fig. 2 shows an example UE 110 according to various example embodiments. The UE 110 will be described with regard to the network arrangement 100 of Fig. 1. The UE 110 may represent any electronic device and may include a processor 205, a memory arrangement 210, a display device 215, an input / output (I / O) device 220, a transceiver 225, and other components 230. The other components 230 may include, for example, an audio input device, an audio output device, a battery that provides a limited power supply, a data acquisition device, ports to electrically connect the UE 110 to other electronic devices, sensors to detect conditions of the UE 110, etc.
[0025] The processor 205 may be configured to execute a plurality of engines for the UE 110. For example, the engines may include a Tx switching engine 235 for performing various operations related to inter-band Tx switching in combination with intra-band Tx switching. The operations include, but are not limited to, determining a Tx switching configuration that includes information related to the carriers / bands for the inter-band and intra-band Tx switching and a number of ports that may be used for transmissions on the carriers / bands, determining scheduling information for UL transmissions and applying the Tx switching to perform the UL transmissions. Each of these example operations will be described in more detail below.
[0026] The above referenced engine being an application (e.g., a program) executed by the processor 205 is only example. The functionality associated with the engines may also be represented as a separate incorporated component of the UE 110 or may be a modular component coupled to the UE 110, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. The engines may also be embodied as one application or separate applications. In addition, in some UEs, the functionality described for the processor 205 is split among two or more processors such as a baseband processor and an applications processor. The example embodiments may be implemented in any of these or other configurations of a UE.
[0027] The memory arrangement 210 may be a hardware component configured to store data related to operations performed by the UE 110. The display device 215 may be a hardware component configured to show data to a user while the I / O device 220 may be a hardware component that enables the user to enter inputs. The display device 215 and the I / O device 220 may be separate components or integrated together such as a touchscreen.
[0028] The transceiver 225 may be a hardware component configured to establish a connection with the 5G NR-RAN 120, an LTE-RAN (not pictured) , a legacy RAN (not pictured) , a WLAN (not pictured) , etc. The transceiver 225 may include a main radio (MR) and a low power wakeup radio (LP-WUR) . Accordingly, the transceiver 225 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The transceiver 225 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 205 may be operably coupled to the transceiver 225 and configured to receive from and / or transmit signals to the transceiver 225. The processor 205 may be configured to encode, decode and / or process signals (e.g., signaling from a base station of a network) for implementing any one of the methods described herein.
[0029] Fig. 3 shows an example base station 300 according to various example embodiments. The base station 300 may represent the gNB 120A or any other access node through which the UE 110 may establish a connection and manage network operations.
[0030] The base station 300 may include a processor 305, a memory arrangement 310, an input / output (I / O) device 315, a transceiver 320, and other components 325. The other components 325 may include, for example, an audio input device, an audio output device, a battery, a data acquisition device, ports to electrically connect the base station 300 to other electronic devices and / or power sources, etc.
[0031] The processor 305 may be configured to execute a plurality of engines for the UE 110. For example, the engines may include a Tx switching configuration engine 330 for performing operations related to inter-band Tx switching in combination with intra-band Tx switching. The operations include, but are not limited to, configuring the UE with a Tx switching configuration related to inter-band and intra-band Tx switching that includes information about the bands / carriers to be used and a number of ports that may be used for UL transmissions and scheduling a UE with UL transmissions. Each of these example operations will be described in more detail below.
[0032] The memory arrangement 310 may be a hardware component configured to store data related to operations performed by the base station 300. The I / O device 315 may be a hardware component or ports that enable a user to interact with the base station 300. The transceiver 320 may be a hardware component configured to exchange data with the UE 110 and any other UE in the network arrangement 100.
[0033] The transceiver 320 may be a hardware component configured to exchange data with the UE 110 and any other UE in the network arrangement 100. The transceiver 320 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The transceiver 320 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 305 may be operably coupled to the transceiver 320 and configured to receive from and / or transmit signals to the transceiver 320. The processor 305 may be configured to encode, decode and / or process signals (e.g., signaling from a UE) for implementing any one of the methods described herein.
[0034] As described above, the example embodiments are related to inter-band Tx switching in combination with intra-band Tx switching. In intra-band Tx switching, the switching may be occurring within the same band because the UE is using two different non-contiguous carriers in the same band, e.g., even though the carrier are in the same band, the Tx / Rx chain may still be re-tuned to operate on a first carrier in a first band to a second carrier in the first band.
[0035] In the example embodiments, there are two types of Tx switching described. A first type is a switched uplink (UL) operation. In switched UL operation, the UE may not simultaneously transmit in both bands. Thus, even though a first Tx chain may be tuned to a first band and a second Tx chain may be tuned to a second band, the UE may not simultaneously transmit on the first band and the second band. A second type is a dual UL operation. In dual UL operation, the UE may simultaneously transmit in both bands. Example embodiments that illustrate each of these types of Tx switching are provided below.
[0036] In addition, the example embodiments also provide an indication when a switching gap may be used for a switching scenario. When a UE performs switching between carriers, there may be a switching gap. A switching gap is the time it takes the UE to re-tune the Tx / Rx chain to the frequencies of the different carriers. There may also be other operations performed by the UE during this switching gap. The UE is not expected to perform any Tx operations during this switching gap.
[0037] Some example embodiments are related to a scenario for switched UL operation with 1Tx-2Tx. In this scenario, a maximum of 1 Tx chain may be tuned to a first band and a maximum of 2 Tx chains may be tuned to a second band. As stated above, the example embodiments are described with reference to a UE that has two Tx chains. In this example, there may be various switching cases that include switching across two non-contiguous carriers within the same band and / or switching across the two bands with a total of up to three carriers, where the second band has two non-contiguous carriers and the first band has one carrier and only the carriers on the second band may have up to two port (2P) transmissions.
[0038] These example embodiments may only have 1-port transmission on the carrier of the first band, e.g., the band that has only up to 1 Tx chain. In addition, while the second band may have 2P transmissions, the 2P transmissions are only allowed on one of the two carriers of the second band at the same time. An illustration of these example embodiments are shown with reference to Fig. 4.
[0039] Fig. 4 shows a table 400 illustrating example cases for switched uplink (UL) operation with 1Tx-2Tx according to various example embodiments. As shown in table 400, a first column identifies the various use case, e.g., case 1 410, a case 2 420, a case 3a 430 and a case 3b 440. In some example embodiments, only one of the case 3a 430 and the case 3b 440 may be supported.
[0040] In the table 400, the second column indicates the number of Tx chains tuned to the band and the third column indicates the possible port transmissions based on the Tx chain configuration. In the example of table 400, the first number indicates the first band and the second number indicates the second band. Thus, in case 1 410, the indication of 1T + (1T +0T) in the second column indicates that one Tx chain is tuned to the carrier of a first band and one Tx chain is tuned to a first carrier of the second band. In this case 1 410, there is no Tx chain tuned to the second carrier of the second band. The indication of 1P + (0P + 0P) indicates that the UE may transmit on a port of the first band but not on any ports of the second band in this case 1 410.
[0041] In case 2 420, the indication of 1T + (0T + 1T) indicates that one Tx chain is tuned to the carrier of a first band and one Tx chain is tuned to the second carrier of the second band. In this case 2 420, there is no Tx chain tuned to the first carrier of the second band. S imilar to the case 1 410, the indication of 1P + (0P + 0P) indicates that the UE may transmit on a port of the first band but not on any ports of the second band in this case 420.
[0042] In case 3a 430, the indication of 0 T + (0T + 2T) indicates that two Tx chains are tuned to the second carrier of the second band. In this case 3a 430, there is no Tx chain tuned to the first band or the first carrier of the second band. The indication of 0P + (0P + 1P) and 0P + (0P + 2P) indicates that the UE may transmit on one port or two ports of the second carrier of the second band in this case 3a 430.
[0043] In case 3b 440, the indication of 0 T + (2T + 0T) indicates that two Tx chains are tuned to the first carrier of the second band. In this case 3b 440, there is no Tx chain tuned to the first band or the second carrier of the second band. The indication of 0P + (1P + 0P) and 0P + (2P + 0P) indicates that the UE may transmit on one port or two ports of the first carrier of the second band in this case 3b 440.
[0044] The table 400 shows the four cases 410-440 for the switched UL operation with 1Tx-2Tx and the UE may switch between any of these cases. For example, the UE may currently be operating in case 1 410. The UE may then switch to case 3a 430. The reverse switch may also be performed, e.g., from case 3a 430 to case 1 410. The UE may perform any combination of switching between the four cases 410-440.
[0045] As described above, a switching gap may be used for some of the switching scenarios of the switched UL operation with 1Tx-2Tx. The following provides examples of the switching scenarios that may use the switching gap. The example switching scenarios also include examples of the cases of Fig. 4 to which the example switching scenarios apply. These are only examples and there may be other cases that result in the same switching scenario.
[0046] A switching gap may be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 1 410 to the case 3b 440 (e.g., 1P + (0P+0P) -> 0P + (1P+0P) .
[0047] A switching gap may also be used when the UE is to transmit a 2-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 1 410 to the case 3b 440 (e.g., 1P + (0P+0P) -> 0P + (2P+0P) ) .
[0048] A switching gap may also be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 2-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 3b 440 to the case 2 420 (e.g., 0P + (2P+0P) -> 1P + (0P+0P) ) .
[0049] Other example embodiments are related to a scenario for dual UL operation with 1Tx-2Tx. In this scenario, a maximum of 1 Tx chain may be tuned to a first band and a maximum of 2 Tx chains may be tuned to a second band. As stated above, the example embodiments are described with reference to a UE that has two Tx chains. In this example, there may be various switching cases that include switching across two non-contiguous carriers within the same band and / or switching across the two bands with a total of up to three carriers, where the second band has two non-contiguous carriers and the first band has one carrier and only the carriers on the second band may have up to two port (2P) transmissions.
[0050] These example embodiments may only have 1-port transmission on the carrier of the first band, e.g., the band that has only up to 1 Tx chain. On the other hand, simultaneous transmission across the two carriers on the second band, e.g., the band that has up to 2 Tx chains, is allowed. An illustration of these example embodiments are shown with reference to Fig. 5.
[0051] Fig. 5 shows a table 500 illustrating example cases for dual UL operation with 1Tx-2Tx according to various example embodiments. As shown in table 500, a first column identifies the various use case, e.g., case 1 510, a case 2 520, a case 3a 530, case 3b 540 and case 4 550. In some example embodiments, only one of the case 3a 530 and the case 3b 540 may be supported.
[0052] In the table 500, the second column indicates the number of Tx chains tuned to the band and the third column indicates the possible port transmissions based on the Tx chain configuration. In the example of table 500, the first number indicates the first band and the second number indicates the second band. Thus, in case 1 510, the indication of 1T + (1T +0T) in the second column indicates that one Tx chain is tuned to the carrier of a first band and one Tx chain is tuned to a first carrier of the second band. In this case 1 510, there is no Tx chain tuned to the second carrier of the second band. For this case 1 510, the port indications of the third column indicate 1P + (0P + 0P) where the UE may transmit on a port of the first band but not on any ports of the second band, 1P + (1P + 0P) where the UE may transmit on a port of the first band and a port of the first carrier of the second band and 0P + (1P + 0P) where the UE may transmit on a port of the first carrier of the second band but not on any other carriers.
[0053] In case 2 520, the indication of 1T + (0T + 1T) indicates that one Tx chain is tuned to the carrier of a first band and one Tx chain is tuned to the second carrier of the second band. In this case 2 520, there is no Tx chain tuned to the first carrier of the second band. For this case 2 520, the port indications of the third column indicate 1P + (0P + 0P) where the UE may transmit on a port of the first band but not on any ports of the second band, 1P + (0P + 1P) where the UE may transmit on a port of the first band and a port of the second carrier of the second band and 0P + (0P + 1P) where the UE may transmit on a port of the second carrier of the second band but not on any other carriers.
[0054] In case 3a 530, the indication of 0 T + (2T + 0 T) indicates that two Tx chains are tuned to the first carrier of the second band. In this case 3a 530, there is no Tx chain tuned to the first band or the second carrier of the second band. For this case 3a 530, the port indications of the third column indicate 0P + (1P + 0P) where the UE may transmit on a port of the first carrier of the second band but not on any other carriers and 0P + (2P + 0P) where the UE may transmit on two ports of the first carrier of the second band but not on any other carriers.
[0055] In case 3b 540, the indication of 0 T + (0 T + 2T) indicates that two Tx chains are tuned to the second carrier of the second band. In this case 3b 540, there is no Tx chain tuned to the first band or the first carrier of the second band. For this case 3b 540, the port indications of the third column indicate 0P + (0P + 1P) where the UE may transmit on a port of the second carrier of the second band but not on any other carriers and 0P + (0P + 2P) where the UE may transmit on two ports of the second carrier of the second band but not on any other carriers.
[0056] In case 4 550, the indication of 0T + (1T + 1T) indicates that one Tx chain is tuned to the first carrier of the second band and one Tx chain is tuned to the second carrier of the second band. In this case 4 550, there is no Tx chain tuned to the first band. For this case 3b 540, the port indications of the third column indicate 0P + (1P + 1P) where the UE may transmit on a port of the first carrier of the second band and a port of the second carrier of the second band, 0P + (1P + 0P) where the UE may transmit on a port of the first carrier of the second band but not on any other carriers and 0P + (0P + 1P) where the UE may transmit on a port of the second carrier of the second band but not on any other carriers.
[0057] The table 500 shows the five cases 510-540 for the dual UL operation with 1Tx-2Tx and the UE may switch between any of these cases.
[0058] There may also be scenarios of the dual UL operation with 1Tx-2Tx where a switching gap may be used. The following provides examples of the scenarios that may use the switching gap. The example switching scenarios also include examples of the cases of Fig. 5 to which the example switching scenarios apply. These are only examples and there may be other cases that result in the same switching scenario.
[0059] A switching gap may be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 1 510 to the case 3a 530 (e.g., 1P + (0P+0P) -> 0P + (1P+0P) .
[0060] A switching gap may also be used when the UE is to transmit a 2-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 1 510 to the case 3a 530 (e.g., 1P + (0P+0P) -> 0P + (2P+0P) ) .
[0061] A switching gap may also be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 2-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 3a 530 to the case 2 520 (e.g., 0P + (2P+0P) -> 1P + (0P+0P) ) .
[0062] A switching gap may also be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band and 1-port transmission on another uplink carrier on the same band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 4 550 to the case 2 520 (e.g. 0P+ (1P+1P) -> 1P + (0P+0P) ) .
[0063] Further example embodiments are related to a scenario for switched UL operation with 2Tx-2Tx. In this scenario, a maximum of 2 Tx chains may be tuned to a first band and a maximum of 2 Tx chains may be tuned to a second band. As stated above, the example embodiments are described with reference to a UE that has two Tx chains. In this example, there may be various switching cases that include switching across two non-contiguous carriers within the same band and / or switching across the two bands with a total of up to three carriers, where the second band has two non-contiguous carriers and the first band has one carrier and the carriers on the first band or the second band may have up to two port (2P) transmissions.
[0064] In these example embodiments all the Tx chains may be associated with one carrier among the 3 carriers across 2 bands at the same time. Even when a 1-port transmission is scheduled on a given carrier, all Tx chains are associated with that carrier. In addition, only 1 of the two carriers may be transmitted on the second band at the same time. An illustration of these example embodiments are shown with reference to Fig. 6.
[0065] Fig. 6 shows a table 600 illustrating example cases for switched uplink (UL) operation with 2Tx-2Tx according to various example embodiments. As shown in table 600, a first column identifies the various use case, e.g., a case 1 610, a case 2 620, and a case 3 630.
[0066] In the table 600, the second column indicates the number of Tx chains tuned to the band and the third column indicates the possible port transmissions based on the Tx chain configuration. In the example of table 600, the first number indicates the first band and the second number indicates the second band. Thus, in case 1 610, the indication of 0T + (2T +0T) in the second column indicates that the two Tx chains are tuned to the first carrier of the second band. In this case 1 610, there are no Tx chains tuned to the first band or the second carrier of the second band. The indication of 0P + (1P +0P) indicates that the UE may transmit on a port of the first carrier of the second band and the indication of 0P + (2P + 0P) indicates that the UE may transmit on two ports of the first carrier of the second band.
[0067] In case 2 620, the indication of 0 T + (0 T + 2T) indicates that two Tx chains are tuned to the second carrier of the second band. In this case 2 620, there are no Tx chains tuned to the first band or the first carrier of the second band. The indication of 0P + (0P + 1P) indicates that the UE may transmit on a port of the second carrier of the second band and the indication of 0P + (0P + 2P) indicates that the UE may transmit on two ports of the second carrier of the second band.
[0068] In case 3 630, the indication of 2T + (0 T + 0T) indicates that two Tx chains are tuned to the carrier of the first band. In this case 3 630, there are no Tx chains tuned to the second band. The indication of 1P + (0P + 0P) indicates that the UE may transmit on a port of the carrier of the first band and the indication of 2P + (0P + 0P) indicates that the UE may transmit on two ports of the carrier of the first band.
[0069] The table 600 shows the three cases 610-630 for the switched UL operation with 2Tx-2Tx and the UE may switch between any of these cases.
[0070] As described above, a switching gap may be used for some of the switching scenarios of the switched UL operation with 2Tx-2Tx. The following provides examples of the switching scenarios that may use the switching gap. The example switching scenarios also include examples of the cases of Fig. 6 to which the example switching scenarios apply. These are only examples and there may be other cases that result in the same switching scenario.
[0071] A switching gap may be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band or the same band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 2 620 to the case 1 610 (e.g., 0P + (0P+1P) -> 0P + (1P+0P) ) .
[0072] A switching gap may be used when the UE is to transmit a 2-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band or the same band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 2 620 to the case 1 610 (e.g., 0P + (0P+1P) -> 0P + (2P+0P) ) .
[0073] A switching gap may be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 2-port transmission on another uplink carrier on another band or the same band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 3 630 to the case 1 610 (e.g., 2P + (0P+0P) -> 0P + (1P+0P) ) .
[0074] A switching gap may be used when the UE is to transmit a 2-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 2-port transmission on another uplink carrier on another band or the same band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 2 620 to the case 1 610 (e.g., 0P + (0P+2P) -> 0P + (2P+0P) ) .
[0075] Additional example embodiments are related to a scenario for dual UL operation with 2Tx-2Tx. In this scenario, a maximum of 2 Tx chains may be tuned to a first band and a maximum of 2 Tx chains may be tuned to a second band. As stated above, the example embodiments are described with reference to a UE that has two Tx chains. In this example, there may be various switching cases that include switching across two non-contiguous carriers within the same band and / or switching across the two bands with a total of up to three carriers, where the second band has two non-contiguous carriers and the first band has one carrier and the carriers on the first band or the second band may have up to two port (2P) transmissions. An illustration of these example embodiments are shown with reference to Fig. 7.
[0076] Fig. 7 shows a table 700 illustrating example cases for dual UL operation with 2Tx-2Tx according to various example embodiments. As shown in the table 700, a first column identifies the various use case, e.g., a case 1 710, a case 2 720, a case 3 730, a case 4 740, a case 5 750 and a case 6 760.
[0077] In the table 700, the second column indicates the number of Tx chains tuned to the band and the third column indicates the possible port transmissions based on the Tx chain configuration. In the example of the table 500, the first number indicates the first band and the second number indicates the second band. Thus, in case 1 710, the indication of 0T + (2T +0T) in the second column indicates that the two Tx chains are tuned to the first carrier of the second band. In this case 1 710, there are no Tx chains tuned to the first band or the second carrier of the second band. The indication of 0P + (1P +0P) indicates that the UE may transmit on a port of the first carrier of the second band and the indication of 0P + (2P + 0P) indicates that the UE may transmit on two ports of the first carrier of the second band.
[0078] In case 2 720, the indication of 0T + (0T + 2T) indicates that two Tx chains are tuned to the second carrier of the second band. In this case 2 720, there are no Tx chains tuned to the first band or the first carrier of the second band. The indication of 0P + (0P + 1P) indicates that the UE may transmit on a port of the second carrier of the second band and the indication of 0P + (0P + 2P) indicates that the UE may transmit on two ports of the second carrier of the second band.
[0079] In case 3 730, the indication of 2T + (0T + 0T) indicates that two Tx chains are tuned to the carrier of the first band. In this case 3 730, there are no Tx chains tuned to the second band. The indication of 1P + (0P + 0P) indicates that the UE may transmit on a port of the carrier of the first band and the indication of 2P + (0P + 0P) indicates that the UE may transmit on two ports of the carrier of the first band.
[0080] In case 4 740, the indication of 1T + (1T + 0T) indicates that one Tx chain is tuned to the carrier of the first band and one Tx chain is tuned to the first carrier of the second band. In this case 4 740, there is no Tx chain tuned to the second carrier of the second band. For this case 4 740, the port indications of the third column indicate 1P + (0P + 0P) where the UE may transmit on a port of the carrier of the first band but not on any other carriers, 1P + (1P + 0P) where the UE may transmit on one port of the carrier of the first band and one port of the first carrier of the second band but not on the second carrier of the second band, and 0P + (1P + 0P) where the UE may transmit on one port of the first carrier of the second band but not on any other carriers.
[0081] In case 5 750, the indication of 1T + (0T + 1T) indicates that one Tx chain is tuned to the carrier of the first band and one Tx chain is tuned to the second carrier of the second band. In this case 5 750, there is no Tx chain tuned to the first carrier of the second band. For this case 5 750, the port indications of the third column indicate 1P + (0P + 0P) where the UE may transmit on a port of the carrier of the first band but not on any other carriers, 1P + (0P + 1P) where the UE may transmit on one port of the carrier of the first band and one port of the second carrier of the second band but not on the first carrier of the second band, and 0P + (0P + 1P) where the UE may transmit on one port of the second carrier of the second band but not on any other carriers.
[0082] In case 6 760, the indication of 0T + (1T + 1T) indicates that one Tx chain is tuned to the first carrier of the second band and one Tx chain is tuned to the second carrier of the second band. In this case 6 760, there is no Tx chain tuned to the first band. For this case 6 760, the port indications of the third column indicate 0P + (1P + 0P) where the UE may transmit on a port of the first carrier of the second band but not an any other carriers, 0P + (1P + 1P) where the UE may transmit on a port of the first carrier of the second band and the a port of the second carrier of the second band but not on the first band, and 0P + (0P + 1P) where the UE may transmit on a port of the second carrier of the second band but not on any other carriers.
[0083] The table 700 shows the six cases 710-760 for the dual UL operation with 2Tx-2Tx and the UE may switch between any of these cases.
[0084] There may also be scenarios of the dual UL operation with 2Tx-2Tx where a switching gap may be used. The following provides examples of the scenarios that may use the switching gap. The example switching scenarios also include examples of the cases of Fig. 7 to which the example switching scenarios apply. These are only examples and there may be other cases that result in the same switching scenario.
[0085] A switching gap may be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 3 730 to the case 1 710 (e.g., 1P + (0P+0P) -> 0P + (1P+0P) .
[0086] A switching gap may also be used when the UE is to transmit a 2-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 3 730 to the case 1 710 (e.g., 1P + (0P+0P) -> 0P + (2P+0P) ) .
[0087] A switching gap may also be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 2-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 1 710 to the case 3 730 (e.g., 0P + (2P+0P) -> 1P + (0P+0P) ) .
[0088] A switching gap may also be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band and 1-port transmission on another uplink carrier on the same band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 5 750 to the case 1 710 (e.g., 1P + (0P+1P) -> 0P + (1P+0P) ) .
[0089] A switching gap may also be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and if the preceding uplink transmission is a 2-port transmission on another uplink carrier on another band or the same band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 1 710 to the case 3 730 (e.g., 0P + (2P+0P) -> 1P + (0P+0P) ) .
[0090] A switching gap may also be used when the UE is to transmit a 1-port transmission on one uplink carrier on one band and 1-port transmission on another uplink carrier on the same band and if the preceding uplink transmission is a 1-port transmission on another uplink carrier on another band, then the UE is not expected to transmit for the switching gap duration on any of the carriers. An example of this switching scenario where the switching gap may be used is where the UE is switching from the case 3 730 to the case 6 760 or from the case 5 750 to the case 6 760 (e.g., 1P + (0P+0P) -> 0P + (1P+1P) ) or 1P + (0P+1P) -> 0P + (1P+1P) .
[0091] Fig. 8 shows an example method 800 of Tx switching operations according to various example embodiments. The example method 800 is described from the viewpoint of the UE 110.
[0092] In 810, the UE 110 may receive a Tx switching configuration from the network. Some example Tx switching configurations were described above with reference to Figs. 4-7. The information included in the Tx switching configuration may include a number of Tx chains to tune to particular bands and / or carriers, an identification of the bands and / or carriers, a number of ports on which the UE 110 may transmit in the band or carrier, etc. The UE 110 may receive the Tx switching configuration in any type of signaling from the network, e.g., Radio Resource Control (RRC) signaling, Medium Access Control Control Element (MAC CE) signaling, Downlink Control Information (DCI) signaling, etc. In some example embodiments, some of the information associated with the Tx switching configuration may be hard encoded in standards, e.g., 3GPP Technical Specifications (TS) ) .
[0093] In 820, the UE 110 may receive Tx scheduling information from the network, e.g., the gNB 120A may send the UE scheduling DCI that includes Tx occasions where the UE 110 is to transmit data to the network.
[0094] In 830, the UE 110 may perform any Tx switching operations to tune its Tx chains to the correct carriers and / or bands and then perform the Tx operations according to the Tx scheduling information.Examples
[0095] In a first example, a method, comprising determining a transmission (Tx) switching configuration comprising information associated with Tx switching operations, wherein the information comprises an indication of a first carrier of a first band, a first carrier of a second band and a second carrier of the second band to which one or more Tx chains are to be tuned during the Tx switching operations and a number of ports on the first carrier of the first band, the first carrier of the second band and the second carrier of the second band that are to be used for transmission, wherein the first carrier of the second band and the second carrier of the second band are non-contiguous carriers in the frequency domain, processing, based on signaling from a network, Tx scheduling information comprising an indication of Tx resources and performing the Tx switching operations according to the Tx switching configuration to perform Tx operations using the Tx resources.
[0096] In a second example, the method of the first example, wherein the Tx switching configuration indicates that a maximum of one Tx chain is to be tuned to the first carrier of the first band, only 1-port transmission is used on the first carrier of the first band, a maximum of two Tx chains are to be tuned to the first carrier and the second carrier of the second band, a maximum of 2-port transmission is used on the first carrier and the second carrier of the second band and only one of the first carrier and the second carrier of the second band are used for transmission at a same time.
[0097] In a third example, the method of the second example, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the first carrier of the second band, wherein 1-port transmission is configured for the first carrier of the first band.
[0098] In a fourth example, the method of the second example, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the second carrier of the second band, wherein 1-port transmission is configured for the first carrier of the first band.
[0099] In a fifth example, the method of the second example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the second carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the second carrier of the second band.
[0100] In a sixth example, the method of the second example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the second band.
[0101] In a seventh example, the method of the second example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 1-port transmission on an other one of the first band or the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0102] In an eighth example, the method of the second example, wherein, when Tx switching operations are based on performing Tx operations of a 2-port transmission on the first carrier or the second carrier of the second band and the Tx switching operations comprise a switch from a 1-port transmission on the first band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0103] In a ninth example, the method of the second example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on the first band and the Tx switching operations comprise a switch from a 2-port transmission on the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0104] In a tenth example, the method of the first example, wherein the Tx switching configuration indicates that a maximum of one Tx chain is to be tuned to the first carrier of the first band, only 1-port transmission is used on the first carrier of the first band, a maximum of two Tx chains are to be tuned to the first carrier and the second carrier of the second band, a maximum of 2-port transmission is used on the first carrier and the second carrier of the second band and the first carrier and the second carrier of the second band are allowed to be used for transmission at a same time.
[0105] In an eleventh example, the method of the tenth example, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the first carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the first band, 1-port transmission is configured for the first carrier of the first band and 1-port transmission is configured for the first carrier of the second band, or 1-port transmission is configured for the first carrier of the second band.
[0106] In a twelfth example, the method of the tenth example, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the second carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the first band, 1-port transmission is configured for the first carrier of the first band and 1-port transmission is configured for the second carrier of the second band, or 1-port transmission is configured for the second carrier of the second band.
[0107] In a thirteenth example, the method of the tenth example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the second band or 2-port transmission is configured for the first carrier of the second band.
[0108] In a fourteenth example, the method of the tenth example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the second carrier of the second band, wherein one of 1-port transmission is configured for the second carrier of the second band or 2-port transmission is configured for the second carrier of the second band.
[0109] In a fifteenth example, the method of the tenth example, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the second band and one Tx chain is tuned to the second carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the second band and 1-port transmission is configured for the second carrier of the second band, 1-port transmission is configured for the first carrier of the second band, or 1-port transmission is configured for the second carrier of the second band.
[0110] In a sixteenth example, the method of the tenth example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 1-port transmission on an other one of the first band or the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0111] In a seventeenth example, the method of the tenth example, wherein, when Tx switching operations are based on performing Tx operations of a 2-port transmission on the first carrier or the second carrier of the second band and the Tx switching operations comprise a switch from a 1-port transmission on the first band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0112] In an eighteenth example, the method of the tenth example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on the first band and the Tx switching operations comprise a switch from a 2-port transmission on the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0113] In a nineteenth example, the method of the tenth example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on the first band and the Tx switching operations comprise a switch from a 1-port transmission on the first carrier and the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0114] In a twentieth example, the method of the first example, wherein the Tx switching configuration indicates that a maximum of two Tx chains are to be tuned to the first carrier of the first band, a maximum of 2-port transmission is used on the first carrier of the first band, a maximum of two Tx chains are to be tuned to the first carrier and the second carrier of the second band, a maximum of 2-port transmission is used on the first carrier and the second carrier of the second band and only one of the first carrier and the second carrier of the second band are used for transmission at a same time.
[0115] In a twenty first example, the method of the twentieth example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the second band.
[0116] In a twenty second example, the method of the twentieth example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the second carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the second carrier of the second band.
[0117] In a twenty third example, the method of the twentieth example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the first band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the first band.
[0118] In a twenty fourth example, the method of the twentieth example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 1-port transmission on an other one of the first band or the second band or a 1-port transmission on an other one of the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0119] In a twenty fifth example, the method of the twentieth example, wherein, when Tx switching operations are based on performing Tx operations of a 2-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 1-port transmission on an other one of the first band or the second band or a 1-port transmission on an other one of the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0120] In a twenty sixth example, the method of the twentieth example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 2-port transmission on an other one of the first band or the second band or a 2-port transmission on an other one of the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0121] In a twenty seventh example, the method of the twentieth example, wherein, when Tx switching operations are based on performing Tx operations of a 2-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 2-port transmission on an other one of the first band or the second band or a 2-port transmission on an other one of the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0122] In a twenty eighth example, the method of the first example, wherein the Tx switching configuration indicates that a maximum of two Tx chains are to be tuned to the first carrier of the first band, a maximum of 2-port transmission is used on the first carrier of the first band, a maximum of two Tx chains are to be tuned to the first carrier and the second carrier of the second band, a maximum of 2-port transmission is used on the first carrier and the second carrier of the second band and the first carrier and the second carrier of the second band are allowed to be used for transmission at a same time.
[0123] In a twenty ninth example, the method of the twenty eighth example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the second band.
[0124] In a thirtieth example, the method of the twenty eighth example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the second carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the second carrier of the second band.
[0125] In a thirty first example, the method of the twenty eighth example, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the first band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the first band.
[0126] In a thirty second example, the method of the twenty eighth example, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the first carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the first band, 1-port transmission is configured for the first carrier of the first band and 1-port transmission is configured for the first carrier of the second band, or 1-port transmission is configured for the first carrier of the second band.
[0127] In a thirty third example, the method of the twenty eighth example, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the second carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the first band, 1-port transmission is configured for the first carrier of the first band and 1-port transmission is configured for the second carrier of the second band, or 1-port transmission is configured for the second carrier of the second band.
[0128] In a thirty fourth example, the method of the twenty eighth example, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the second band and one Tx chain is tuned to the second carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the second band, 1-port transmission is configured for the first carrier of the second band and 1-port transmission is configured for the second carrier of the second band, or 1-port transmission is configured for the second carrier of the second band.
[0129] In a thirty fifth example, the method of the twenty eighth example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 1-port transmission on an other one of the first band or the second band or a 1-port transmission on an other one of the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0130] In a thirty sixth example, the method of the twenty eighth example, wherein, when Tx switching operations are based on performing Tx operations of a 2-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 1-port transmission on an other one of the first band or the second band or a 1-port transmission on an other one of the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0131] In a thirty seventh example, the method of the twenty eighth example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 2-port transmission on an other one of the first band or the second band or a 2-port transmission on an other one of the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0132] In a thirty eighth example, the method of the twenty eighth example, wherein, when Tx switching operations are based on performing Tx operations of a 2-port transmission on one of the first band or the second band and the Tx switching operations comprise a switch from a 2-port transmission on an other one of the first band or the second band or a 2-port transmission on an other one of the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0133] In a thirty ninth example, the method of the twenty eighth example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on one of the first carrier or second carrier of the second band and the Tx switching operations comprise a switch from a 1-port transmission on the first band and a 1-port transmission on an other one of the first carrier or the second carrier of the second band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0134] In a fortieth example, the method of the twenty eighth example, wherein, when Tx switching operations are based on performing Tx operations of a 1-port transmission on the first carrier of the second band and a 1-port transmission on the second carrier of the second band and the Tx switching operations comprise a switch from a 1-port transmission on the first band, no transmissions are expected to be performed during a switching gap associated with the Tx switching operations.
[0135] In a forty first example, a processor configured to perform any of the methods of the first through fortieth examples.
[0136] In a forty second example, a user equipment (UE) configured to perform any of the methods of the first through fortieth examples.
[0137] Those skilled in the art will understand that the above-described example embodiments may be implemented in any suitable software or hardware configuration or combination thereof. An example hardware platform for implementing the example embodiments may include, for example, an Intel x86 based platform with compatible operating system, a Windows OS, a Mac platform and MAC OS, a mobile device having an operating system such as iOS, Android, etc. The example embodiments of the above described method may be embodied as a program containing lines of code stored on a non-transitory computer readable storage medium that, when compiled, may be executed on a processor or microprocessor.
[0138] Although this application described various embodiments each having different features in various combinations, those skilled in the art will understand that any of the features of one embodiment may be combined with the features of the other embodiments in any manner not specifically disclaimed or which is not functionally or logically inconsistent with the operation of the device or the stated functions of the disclosed embodiments.
[0139] It is well understood that the use of personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users. In particular, personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users.
[0140] It will be apparent to those skilled in the art that various modifications may be made in the present disclosure, without departing from the spirit or the scope of the disclosure. Thus, it is intended that the present disclosure cover modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalent.
Claims
1.An apparatus comprising memory coupled to processing circuitry, the processing circuitry configured to:determine a transmission (Tx) switching configuration comprising information associated with Tx switching operations, wherein the information comprises an indication of a first carrier of a first band, a first carrier of a second band and a second carrier of the second band to which one or more Tx chains are to be tuned during the Tx switching operations and a number of ports on the first carrier of the first band, the first carrier of the second band and the second carrier of the second band that are to be used for transmission, wherein the first carrier of the second band and the second carrier of the second band are non-contiguous carriers in the frequency domain;process, based on signaling from a network, Tx scheduling information comprising an indication of Tx resources; andperform the Tx switching operations according to the Tx switching configuration to perform Tx operations using the Tx resources.2.The apparatus of claim 1, wherein the Tx switching configuration indicates that a maximum of one Tx chain is to be tuned to the first carrier of the first band, only 1-port transmission is used on the first carrier of the first band, a maximum of two Tx chains are to be tuned to the first carrier and the second carrier of the second band, a maximum of 2-port transmission is used on the first carrier and the second carrier of the second band and only one of the first carrier and the second carrier of the second band are used for transmission at a same time.3.The apparatus of claim 2, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the first carrier of the second band, wherein 1-port transmission is configured for the first carrier of the first band.4.The apparatus of claim 2, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the second carrier of the second band, wherein 1-port transmission is configured for the first carrier of the first band.5.The apparatus of claim 2, wherein the Tx switching configuration indicates one of:two Tx chains are tuned to the second carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the second carrier of the second band; ortwo Tx chains are tuned to the first carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the second band.6.The apparatus of claim 1, wherein the Tx switching configuration indicates that a maximum of one Tx chain is to be tuned to the first carrier of the first band, only 1-port transmission is used on the first carrier of the first band, a maximum of two Tx chains are to be tuned to the first carrier and the second carrier of the second band, a maximum of 2-port transmission is used on the first carrier and the second carrier of the second band and the first carrier and the second carrier of the second band are allowed to be used for transmission at a same time.7.The apparatus of claim 6, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the first carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the first band, 1-port transmission is configured for the first carrier of the first band and 1-port transmission is configured for the first carrier of the second band, or 1-port transmission is configured for the first carrier of the second band.8.The apparatus of claim 6, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the second carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the first band, 1-port transmission is configured for the first carrier of the first band and 1-port transmission is configured for the second carrier of the second band, or 1-port transmission is configured for the second carrier of the second band.9.The apparatus of claim 6, wherein the Tx switching configuration indicates one of:two Tx chains are tuned to the first carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the second band or 2-port transmission is configured for the first carrier of the second band; ortwo Tx chains are tuned to the second carrier of the second band, wherein one of 1-port transmission is configured for the second carrier of the second band or 2-port transmission is configured for the second carrier of the second band.10.The apparatus of claim 6, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the second band and one Tx chain is tuned to the second carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the second band and 1-port transmission is configured for the second carrier of the second band, 1-port transmission is configured for the first carrier of the second band, or 1-port transmission is configured for the second carrier of the second band.11.The apparatus of claim 1, wherein the Tx switching configuration indicates that a maximum of two Tx chains are to be tuned to the first carrier of the first band, a maximum of 2-port transmission is used on the first carrier of the first band, a maximum of two Tx chains are to be tuned to the first carrier and the second carrier of the second band, a maximum of 2-port transmission is used on the first carrier and the second carrier of the second band and only one of the first carrier and the second carrier of the second band are used for transmission at a same time.12.The apparatus of claim 11, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the second band.13.The apparatus of claim 11, wherein the Tx switching configuration indicates that two Tx chains are tuned to the second carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the second carrier of the second band.14.The apparatus of claim 11, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the first band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the first band.15.The apparatus of claim 1, wherein the Tx switching configuration indicates that a maximum of two Tx chains are to be tuned to the first carrier of the first band, a maximum of 2-port transmission is used on the first carrier of the first band, a maximum of two Tx chains are to be tuned to the first carrier and the second carrier of the second band, a maximum of 2-port transmission is used on the first carrier and the second carrier of the second band and the first carrier and the second carrier of the second band are al lowed to be used for transmission at a same time.16.The apparatus of claim 15, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the second band.17.The apparatus of claim 15, wherein the Tx switching configuration indicates that two Tx chains are tuned to the second carrier of the second band, wherein 1-port transmission or 2-port transmission is configured for the second carrier of the second band.18.The apparatus of claim 15, wherein the Tx switching configuration indicates that two Tx chains are tuned to the first carrier of the first band, wherein 1-port transmission or 2-port transmission is configured for the first carrier of the first band.19.The apparatus of claim 15, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the first carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the first band, 1-port transmission is configured for the first carrier of the first band and 1-port transmission is configured for the first carrier of the second band, or 1-port transmission is configured for the first carrier of the second band.20.The apparatus of claim 15, wherein the Tx switching configuration indicates that one Tx chain is tuned to the first carrier of the first band and one Tx chain is tuned to the second carrier of the second band, wherein one of 1-port transmission is configured for the first carrier of the first band, 1-port transmission is configured for the first carrier of the first band and 1-port transmission is configured for the second carrier of the second band, or 1-port transmission is configured for the second carrier of the second band.