Dynamic waveform switching

Abstract

A baseband processor of a user equipment (UE) (110) is configured to perform operations including: receiving, using a transceiver of the UE (110), a waveform indication from a base station (120) via layer 1 signaling or layer 2 signaling, the waveform indication indicating a target waveform of a set of waveforms to be used by the UE (110); and transmitting, using the transceiver of the UE (110), an uplink transmission to the base station (120) based on the target waveform. Dynamic waveform switching is achieved and coverage enhancement is provided.

Description

Technical Field

[0001] Embodiments of the present disclosure relate generally to the field of telecommunications, and particularly to dynamic waveform switching. Background Art

[0002] For New Radio (NR) coverage, there are different types of waveforms used for uplink communications, including waveforms such as Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) and Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM). Each type of waveform has its own advantages and disadvantages. Sometimes, it is necessary to switch from one type of uplink waveform to another type of uplink waveform in order to adapt to the location of the user equipment (UE) or the network scenario. Summary of the invention

[0003] Generally speaking, example embodiments of the present disclosure provide a solution for dynamic waveform switching for uplink communications.

[0004] In a first aspect, a baseband processor of a user equipment is provided. The baseband processor is configured to perform operations, the operations including: receiving a waveform indication from a base station via layer 1 signaling or layer 2 signaling using a transceiver of the UE, the waveform indication indicating a target waveform to be used by the UE from a set of waveforms; and sending an uplink transmission to the base station based on the target waveform using the transceiver of the UE.

[0005] In a second aspect, a user equipment is provided. The user equipment includes a transceiver and a baseband processor. The transceiver is configured to communicate with a network. The baseband processor is communicatively coupled to the transceiver and configured to perform operations, the operations comprising: receiving a waveform indication from a base station via layer 1 signaling or layer 2 signaling using the transceiver of the UE, the waveform indication indicating a target waveform to be used by the UE from a set of waveforms; and using the transceiver of the UE, sending an uplink transmission to the base station based on the target waveform.

[0006] In a third aspect, a processor of a base station is provided. The processor is configured to perform operations, the operations including: using a transceiver of the BS to send a signaling indicating enabling / disabling dynamic waveform switching to a UE via layer 1 signaling or layer 2 signaling, a waveform indication indicating a target waveform to be used by the UE from a set of waveforms; and using the transceiver of the BS to receive an uplink transmission from the UE based on the target waveform.

[0007] In a fourth aspect, a base station is provided. The base station includes a transceiver and a baseband processor. The transceiver is configured to communicate with a user equipment. The baseband processor is communicatively coupled to the transceiver and configured to perform operations, the operations including: using the transceiver of the BS to send a waveform indication to a UE via layer 1 signaling or layer 2 signaling, the waveform indication indicating a target waveform to be used by the UE in a set of waveforms; and using the transceiver of the BS to receive an uplink transmission from the UE based on the target waveform.

[0008] It should be understood that the invention summary is not intended to indicate the key or essential features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of some embodiments of the present disclosure in the accompanying drawings, in which:

[0010] Figure 1 An example communication network is shown in which example embodiments of the present disclosure may be implemented;

[0011] Figure 2 illustrates a signaling diagram illustrating a process for waveform indication and waveform switching according to some embodiments of the present disclosure;

[0012] Figure 3 An exemplary PUSCH-Config IE illustrating configuration of a waveform switching function indication for a base station according to some embodiments of the present disclosure is illustrated;

[0013] Figure 4 illustrates an exemplary RACH-ConfigCommon IE for configuration of a waveform switching function indication for a base station according to some other embodiments of the present disclosure;

[0014] Figure 5 illustrates an exemplary ConfiguredGrantConfig IE for configuration of a waveform switching function indication for a base station according to other embodiments of the present disclosure;

[0015] Figure 6 illustrates an exemplary IE for configuration of a waveform indication via a TDRA table according to some embodiments of the present disclosure;

[0016] Figure 7 illustrates an exemplary structure of a random access response grant content field according to some embodiments of the present disclosure;

[0017] Figure 8illustrates an exemplary structure of a medium access control random access response according to some embodiments of the present disclosure;

[0018] Fig. 9 An exemplary structure of a fallback random access response according to some embodiments of the present disclosure is illustrated;

[0019] Fig.10 A flowchart illustrating an example method implemented at a UE according to some embodiments of the present disclosure is illustrated;

[0020] Fig.11 illustrates a flow chart illustrating an example method implemented at a BS according to some embodiments of the present disclosure; and

[0021] Fig.12 A simplified block diagram of a device suitable for implementing embodiments of the present disclosure is illustrated.

[0022] Throughout the drawings, the same or similar reference numerals refer to the same or similar elements. DETAILED DESCRIPTION

[0023] The principle of the present disclosure will now be described with reference to some embodiments. It should be understood that these embodiments are described only for illustrative purposes, and are helpful for those skilled in the art to understand and implement the present disclosure, without indicating any limitation to the scope of the present disclosure. In addition to the methods described below, the disclosure described herein can be implemented in various ways.

[0024] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0025] The terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments. For example, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context otherwise indicates. The terms "include", "have", "include" when used herein specify the presence of stated features, elements, and / or components, etc., but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when describing specific features, structures, or characteristics in conjunction with some embodiments, it is considered that it is within the knowledge of those skilled in the art to implement such features, structures, or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0026] It should also be understood that, although the terms "first", "second", etc. may be used to describe various elements in this article, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first element can be named as the second element and similarly the second element can be named as the first element without departing from the scope of the example embodiments. As used herein, the term "and / or" includes any combination and all combinations of one or more of the listed terms.

[0027] As used herein, the term "communication network" refers to a network that complies with any suitable communication standard, such as long term evolution (LTE), LTE-Advanced (LTE-A), wideband code division multiple access (WCDMA), high speed packet access (HSPA), narrowband Internet of Things (NB-IoT), etc. In addition, the communication between the terminal equipment and the network equipment in the communication network can be performed according to any suitable generation of communication protocols, including but not limited to the first generation (1G) communication protocol, the second generation (2G) communication protocol, the 2.5G communication protocol, the 2.75G communication protocol, the third generation (4C) communication protocol, the fourth generation (4G) communication protocol, the 4.5G communication protocol, the fifth generation (5G) communication protocol, and / or any other protocol currently known or to be developed in the future. The embodiments of the present disclosure can be applied to various communication systems. In view of the rapid development of communication, there will certainly be communication technologies and systems of future types that can embody the present disclosure. It should not be regarded as limiting the scope of the present disclosure to the above-mentioned systems.

[0028] As used herein, the term "network device" refers to a node in a communication network via which a terminal device accesses the network and receives services from it. Depending on the terminology and technology applied, a network device may refer to a base station (BS) or an access point (AP), such as a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), a NR NB (also known as a gNB), a remote radio unit (RRU), a radio head (RH), a remote radio head (RRH), a relay, a low-power node (such as a femto, pico, etc.). In the following description, the terms "network device", "base station" and "access point" may be used interchangeably.

[0029] The term "terminal device" refers to any terminal device capable of wireless communication. By way of example and not limitation, a terminal device may also be referred to as a communication device, a user equipment (UE), a subscriber station (SS), a portable subscriber station, a mobile station (MS), or an access terminal (AT). The terminal device may include, but is not limited to, a mobile phone, a cellular phone, a smart phone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet computer, a wearable terminal device, a personal digital assistant (PDA), a portable computer, a desktop computer, an image capture terminal device such as a digital camera, a game terminal device, a music storage and playback appliance, a vehicle-mounted wireless terminal device, a wireless endpoint, a mobile station, a laptop embedded equipment (LEE), a laptop mounted equipment (LME), a USB dongle, a smart device, a wireless customer premises equipment (CPE), an Internet of Things (IoT) device, a watch or other wearable device, a head mounted display (HMD), a vehicle, a drone, medical equipment and applications (e.g., remote surgery), industrial equipment and applications (e.g., robots and / or other wireless devices running in industrial and / or automated processing chain environments), consumer electronic devices, equipment running on commercial and / or industrial wireless networks, etc. In the following description, the terms "terminal device", "communication device", "terminal", "user equipment" and "UE" may be used interchangeably.

[0030] As described above, it is necessary to switch one type of uplink waveform to another type of uplink waveform in order to adapt to the location of the UE or the network scenario. For example, when the UE moves from the cell center to the cell edge, the uplink waveform needs to be switched from CP-OFDM to DFT-S-OFDM, because DFT-S-OFDM has a low peak-to-average power ratio (PAPR) and is beneficial for uplink coverage-limited scenarios. In addition, for coverage enhancement, waveform switching needs to be performed in a fast and dynamic manner to ensure non-continuous coverage.

[0031] In current technology, uplink waveforms are configured via Radio Resource Control (RRC) signaling, which is very slow and is referred to as semi-static waveform switching. This limitation imposes a large barrier to actually switching to a DFT-S-OFDM waveform for cell edge UEs. The current waveform configuration is shown in the text box below.

[0032]

[0033] Release 18 (R18) has included the goal of dynamic switching between DFT-S-OFDM and CP-OFDM. However, no specific configuration is defined for dynamic waveform switching. For dynamic waveform switching, the following issues need to be addressed, including the configuration of dynamic waveform switching, a solution for dynamic waveform switching of the dynamically scheduled physical uplink shared channel (PUSCH), a solution for dynamic waveform switching of Msg3 / MsgA PUSCH initial transmission, and a solution for dynamic waveform switching of retransmissions, and a solution for configured grant PUSCH.

[0034] The embodiments of the present disclosure propose a solution for dynamic waveform switching for the above scenario. In this solution, the BS sends a waveform indication to the UE via layer 1 signaling or layer 2 signaling, and the waveform indication indicates a target waveform to be used by the UE in a set of waveforms. Then, the UE sends an uplink transmission to the base station based on the target waveform.

[0035] According to the embodiments of the present disclosure, by sending the waveform indication via layer 1 signaling or layer 2 signaling, the waveform indication can be received very quickly by the UE. Therefore, the UE can very quickly switch to the target waveform indicated by the waveform indication, thereby realizing dynamic waveform switching and ensuring that the UE is always within the coverage of the BS.

[0036] The following will refer to Figures 1 to 12 The principles and specific implementations of the present disclosure are described in detail. Figure 1 An example communication network 100 is shown in which embodiments of the present disclosure may be implemented. The network 100 includes a user equipment (UE) 110 and a base station (BS) 120 served by the BS 120. The network 100 may provide one or more serving cells to serve the UE 110.

[0037] It should be understood that the number of UEs 110 and BSs 120 is for illustration purposes only and does not imply any limitation. Network 100 may include any suitable number of BSs, UEs, and serving cells suitable for implementing embodiments of the present disclosure.

[0038] In communication network 100, BS 120 may transmit data and control information to UE 110, and UE 110 may also transmit data and control information to BS 120. The link from BS 120 to UE 110 is called a downlink (DL) or forward link, and the link from UE 110 to BS 120 is called an uplink (UL) or reverse link.

[0039] In the communication network 100, the UE 110 may send uplink communications based on a set of waveforms. In some embodiments, the set of waveforms includes a DFT-S-OFDM waveform and a CP-OFDM waveform. Although only two types of waveforms are illustrated, it will be appreciated by those skilled in the art that the set of waveforms may include other types of waveforms, and is not limited to the two types mentioned.

[0040] Figure 2 A signaling diagram illustrating a process for waveform indication and waveform switching according to some embodiments of the present disclosure is illustrated. For the purpose of discussion, reference will be made to Figure 1 Process 200 is described. Process 200 may involve Figure 1 UE 110 and BS 120 in.

[0041] BS 120 sends 201 a waveform indication 230 to UE 110 via layer 1 signaling or layer 2 signaling. Waveform indication 230 indicates a target waveform to be used by UE 110 from a set of waveforms. Thus, UE 110 receives 203 waveform indication 230 from BS 120 via layer 1 signaling or layer 2 signaling. UE 110 then sends 205 an uplink transmission 240 to base station 120 based on the target waveform. On the other side of the communication, BS 120 receives 207 uplink transmission 240 from UE 110.

[0042] Through process 200, since the target waveform of the uplink transmission 240 can be indicated to the UE 110 by the BS 120 via layer 1 signaling or layer 2 signaling, the target waveform to be used by the UE 110 to transmit the uplink transmission 240 can be dynamically controlled and switched by the BS 120. In this way, dynamic switching between sets of waveforms for uplink transmissions from the UE 110 to the BS 120 can be achieved, thereby providing coverage enhancement and improving communication performance between the UE 110 and the BS 120.

[0043] In some embodiments, the target waveform is determined and configured by the BS in the waveform indication. In some embodiments, the layer 1 signaling includes physical layer signaling, which includes downlink control information (DCI). In some embodiments, the layer 2 signaling includes medium access control (MAC) signaling, which includes medium access control (MAC) control elements (CE).

[0044] In some embodiments, the waveform indication indicates whether a DFT-S-OFDM waveform or a CP-OFDM waveform is to be used by indicating whether the transform precoder is enabled or disabled. If the waveform indication indicates that the transform precoder is enabled, the DFT-S-OFDM waveform will be used for uplink transmission. Otherwise, if the waveform indication indicates that the transform precoder is disabled, the CP-OFDM waveform will be used for uplink transmission.

[0045] In some embodiments, before the BS 120 sends 201 the waveform indication 230 to the UE 110, the UE 110 may send 209 UE capability information 220 indicating whether the UE 110 supports switching between sets of waveforms to the base station 120, so as to inform the BS 120 whether the UE 110 is capable of waveform switching. On the other side of the communication, the BS 120 receives 209 the UE capability information 220 from the UE 110. In this way, the BS 120 may send waveform indications only to UEs 110 that are capable of waveform switching, and thus may avoid unnecessary waveform indication transmissions to UEs 110 that do not support waveform switching.

[0046] In some embodiments, before BS 120 sends (201) a waveform indication 230 to UE 110, BS 120 may first send (213) layer 3 signaling 210 to UE 110 indicating whether switching between a set of waveform functions of BS 120 is enabled or disabled. On the other side of the communication, BS 120 receives 215 layer 3 signaling 210 from UE 110. In this way, waveform switching may be performed only when the waveform switching function of BS 120 is enabled, further reducing unnecessary operations and transmissions.

[0047] In some embodiments, the layer 3 signaling includes RRC signaling. For example, BS 120 may configure an information element (IE) such as dynamicTransformPrecoder in the layer 3 signaling to indicate whether waveform switching of BS 120 is enabled. If IE dynamicTransformPrecoder is set to "one", it means that waveform switching of BS 120 is enabled. If IE dynamicTransformPrecoder is set to "zero", it means that waveform switching of BS 120 is disabled.

[0048] In the first scenario of dynamically scheduled PUSCH, the layer 3 signaling may be specific to the UE 110. In this scenario, the waveform switching function indication of the BS 120 may be included in the PUSCH-Config information element.

[0049] Figure 3An exemplary PUSCH-Config IE for configuration of a waveform switching function indication for a base station according to some other embodiments of the present disclosure is illustrated.

[0050] It can be seen that IEs such as dynamicTransformPrecoder are introduced into the PUSCH-Config information element. The IE dynamicTransformPrecoder indicates whether the waveform switching function of the BS is enabled. The IE dynamicTransformPrecoder in the PUSCH-Config information element can be applied to PUSCH scheduled by DCI format 0_1 ​​or DCI format 0_2.

[0051] In the second scenario of Msg3 PUSCH initial transmission or retransmission, the layer 3 signaling may be specific to the cell in which the UE is located. In this scenario, the waveform switching function indication of the base station may be included in the RACH-ConfigCommon information element.

[0052] Figure 4 An exemplary RACH-ConfigCommon IE for configuration of a waveform switching function indication for a base station according to some embodiments of the present disclosure is illustrated.

[0053] It can be seen that IEs such as msg3-dynamicTransformPrecoder are introduced into the RACH-ConfigCommon information element. The IE msg3-dynamicTransformPrecoder indicates whether the waveform switching function of the BS is enabled specifically for the cells supported by the BS. If the IE msg3-dynamicTransformPrecoder is set to "one", it means that the waveform switching function of the BS is enabled. If the IE dynamicTransformPrecoder is set to "zero", it means that the waveform switching of the BS is prohibited. The IE msg3-dynamicTransformPrecoder can be applied to DCI format 0_0. The IE msg3-dynamicTransformPrecoder can also be applied to a PUSCH scheduled by a random access response (RAR) uplink grant, or a PUSCH scheduled by a fallback RAR uplink grant, or a PUSCH scheduled by a DCI format 0_0 with a cyclic redundancy check (CRC) scrambled by a temporary cell RadioNetworkTemporaryIdentifier (TC-RNTI).

[0054] In the third scenario of configured PUSCH grant, a waveform switching function indication of the base station may be included in the ConfiguredGrantConfig information element.

[0055] Figure 5 An exemplary IE for configuration of a waveform switching function indication for a base station according to other embodiments of the present disclosure is illustrated.

[0056] It can be seen that IEs such as dynamicTransformPrecoder are introduced into the ConfiguredGrantConfig information element. The IE dynamicTransformPrecoder indicates whether the waveform switching function of the BS is enabled.

[0057] In some embodiments, the UE may send UE capability information to the base station indicating whether the UE supports switching between sets of waveforms. In some embodiments, the UE may send UE capability information for at least one of the scenarios including Msg3 PUSCH initial transmission or retransmission, dynamically scheduled PUSCH, and configured granted PUSCH.

[0058] If the waveform switching function of the BS is enabled by layer 3 signaling and the UE supports waveform switching, the BS may send a waveform indication to the UE via layer 1 signaling or layer 2 signaling.

[0059] In the first scenario, the uplink transmission is a dynamically scheduled PUSCH, and the waveform indication may be sent via the DCI in the layer 1 signaling or the MAC CE in the layer 2 signaling.

[0060] In one embodiment, a new field in the DCI may be used to indicate a target waveform, such as DFT-S-OFDM or CP-OFDM. For example, a new field may be an IE transformPrecoder. The IE transformPrecoder indicates whether the transform precoder is enabled. If the IE transformPrecoder has a value of "one", it means that the transform precoder is enabled, i.e., the DFT-S-OFDM waveform is to be used. If the IE transformPrecoder has a value of "zero", it means that the transform precoder is disabled, i.e., the CP-OFDM waveform is to be used.

[0061] Alternatively or in addition, bits in existing fields of the DCI may be reinterpreted to indicate the target waveform. For example, bits in the Redundancy Pattern field of the DCI may be used to indicate the target waveform. Alternatively or in addition, a new information element in the Time Domain Resource Allocation (TDRA) table of the DCI may be used to indicate the target waveform. In this way, the waveform indication field does not have much impact on the structure of the DCI.

[0062] Figure 6 An exemplary IE for configuration of waveform indication via a TDRA table according to some embodiments of the present disclosure is illustrated. It can be seen that a transformPrecoder IE can be introduced as part of the PUSCH-TimeDomainResourceAllocationlist in the PUSCH-Config information element to indicate the target waveform.

[0063] Alternatively or in addition, the MAC CE may be used to indicate a target waveform. A new MAC CE may be introduced to indicate a target waveform. An existing MAC CE may be reinterpreted to indicate a target waveform.

[0064] In the second scenario, the uplink transmission is the initial transmission and retransmission of Msg3 PUSCH, and the waveform indication can be sent via the DCI in the layer 1 signaling or the MAC CE in the layer 2 signaling.

[0065] In this scenario, the UE may trigger a waveform switching process. The UE may select a dedicated PRACH preamble in a shared physical random access channel (PRACH) opportunity or a separately configured PRACH opportunity reserved by the base station. Thereafter, the UE may send the selected dedicated PRACH preamble to the base station. If the reserved dedicated PRACH preamble is detected by the base station, the base station will understand that the UE has the capability of waveform switching. That is, via the dedicated PRACH preamble detected by the base station, the UE capability information indicating whether the UE supports waveform switching in a set of waveforms is implicitly notified to the base station.

[0066] In some embodiments, after the BS learns that the UE supports waveform switching, the BS may determine which waveform in the set of waveforms to be applied, and send a waveform indication indicating the determined waveform to the UE. In some embodiments, the UE may trigger the waveform switching process by sending a request to the BS for switching waveforms. The request to switch waveforms may be sent based on a comparison measurement result between the reference signal received power (RSRP) of the downlink communication and a predetermined threshold. If the RSRP is lower than a predetermined threshold, the UE may be at risk of being covered by a cell supported by the BS. At this time, the UE may send a request to the BS for switching to a waveform (such as a DFT-S-OFDM waveform) that is beneficial for uplink coverage-limited scenarios. When the UE moves to the edge of a cell or there are some problems in the connection with the BS, the UE will be covered by a cell supported by the BS.

[0067] In one embodiment, the waveform indication may be sent via a bit of a random access response (RAR) grant message. The information field from the existing information field in the RAR grant message may be used for the waveform indication. In this way, the overall size of the RAR grant message does not change, and the structure of the MAC RAR does not change.

[0068] In some embodiments, the waveform indication can be sent via a bit associated with the TDRA table of the RAR grant message. In such embodiments, the information element in the new TDRA table can be used for the waveform indication. The new TDRA table can use bits from other information fields of the RAR grant message. The new TDRA table can be configured by a system information block (SIB) (such as SIB1, SIB2, etc.). The new TDRA table includes information fields from the traditional TDRA table and new fields for waveform indication. The information fields from the traditional TDRA table may include K2 fields, mappingType fields, and startSymbolAndLength fields. The new field for waveform indication may be the msg3-transformPrecoder field.

[0069] Alternatively or in addition, the bits in the existing fields of the existing TDRA table of the DCI for the initial and retransmission of the scheduling Msg3 PUSCH can be reinterpreted for waveform indication. Alternatively or in addition, one bit added to the existing TDRA table can be used for waveform indication. The added one bit can be obtained from other information fields outside the TDRA table of the RAR grant message, such as the channel state information (CSI) request field. In this way, since the previously existing information fields in the TDRA table remain unchanged, the flexibility of configuring time domain resources for the UE can be ensured.

[0070] In some other implementations, the waveform indication may be sent via a bit in an existing field that is unrelated to the TDRA table of the RAR grant message. Figure 7 An exemplary structure of the RAR Grant field according to some embodiments of the present disclosure is illustrated. As can be seen, the RAR Grant field includes several information fields that are not related to the TDRA table.

[0071] In such embodiments, bits of the modulation and coding scheme (MCS) information field of the RAR grant may be used for waveform indication. For example, the most significant bit (MSB) bit may be used for waveform indication.

[0072] Alternatively or in addition, a bit of the transmit power control (TPC) information field granted by the RAR may be used for waveform indication. For example, the least significant bit (LSB) bit may be used for waveform indication. For another example, the TPC command table may be redefined and include waveform indication.

[0073] Alternatively or additionally, bits of a channel state information (CSI) request information field may be used for waveform indication.

[0074] Alternatively or in addition, bits of the PUSCH frequency resource allocation information field may be used for waveform indication. Since the size of msg3 PUSCH is not that large, the PUSCH frequency resource allocation information field may have unused bits. Therefore, the PUSCH frequency resource allocation information field may be truncated so that one bit may be used for waveform indication.

[0075] In another embodiment, the waveform indication may be sent via a reinterpretation bit in a hybrid automatic repeat request (HARQ) process number field. For example, for Msg3 retransmission, the information field in DCI format 0_0 with a CRC scrambled by TC-RNTI may be reinterpreted for waveform indication. Specifically, the HARQ process number field in DCI format 0_0 with a CRC scrambled by TC-RNTI may be reinterpreted for waveform indication.

[0076] In yet another embodiment, for Msg3 PUSCH initial transmission and retransmission, the waveform indication may be sent via MAC CE. Figure 8 An exemplary structure of a medium access control random access response according to some embodiments of the present disclosure is illustrated. The reserved R bit of the MAC RAR control element may be used for waveform indication.

[0077] In the scenario of initial transmission or retransmission of the MsgA physical uplink shared channel (PUSCH), a waveform indication may be sent similar to the disclosure of the above-mentioned scenario of initial transmission or retransmission of the Msg3 physical uplink shared channel (PUSCH). For example, an information element in a new TDRA table may be used for waveform indication. Alternatively or in addition thereto, a bit in an existing field of an existing TDRA table for initial transmission and retransmission of MsgAPUSCH may be reinterpreted for waveform indication. Still alternatively or in addition thereto, a bit added to an existing TDRA table may be used for waveform indication.

[0078] In this scenario, for MsgA PUSCH retransmission, the waveform indication may be sent via MAC CE. Fig. 9 An exemplary structure of a fallback random access response according to some embodiments of the present disclosure is illustrated.The reserved R bit of the fallback MAC RAR control element may be used for waveform indication.

[0079] In the third scenario, the uplink transmission is a configured grant PUSCH, and the waveform indication may be sent via DCI in layer 1 signaling.

[0080] In this scenario, the waveform indication may be sent via a one-bit field in the TDRA table field of the DCI for the scheduled configured PUSCH grant, such as a type 1 configured PUSCH grant. Alternatively or in addition, the waveform indication may be sent via a reinterpreted bit in an existing field of the DCI for the scheduled configured PUSCH grant. Alternatively or in addition, the waveform indication may be sent via a new field introduced in the timeDomainResourceAllocation IE of the ConfiguredGrantConfigIE for the configured PUSCH grant, such as a type 1 and type 2 configured PUSCH grant.

[0081] In some embodiments, the target waveform indicated by the waveform indication for retransmission of Msg3 or MsgA may be the same as the target waveform indicated by the waveform indication for initial transmission of Msg3 or MsgA. For example, if the waveform indication for initial transmission of Msg3 or MsgA indicates that a DFT-S-OFDM waveform is to be used, the waveform indication for retransmission of Msg3 or MsgA may also indicate that DFT-S-OFDM is to be used. Alternatively or in addition, the target waveform indicated by the waveform indication for retransmission of Msg3 or MsgA may be different from the target waveform indicated by the waveform indication for initial transmission of Msg3 or MsgA.

[0082] In some embodiments, the uplink transmission is a small data transmission (SDT), and the above-mentioned waveform indication device is also applicable to SDT. Specifically, for SDT based on random access, the waveform indication device for initial transmission and retransmission of Msg3 and MsgA can be used for waveform switching. For SDT based on configuration grant, the waveform indication device for the configured grant PUSCH can be used for waveform switching.

[0083] Fig.10 A flowchart illustrating an example method 1000 for waveform indication implemented at a UE according to some embodiments of the present disclosure is illustrated. The method 1000 may be implemented at a device such as Figure 1 The method 1000 is implemented at the UE 110 shown. It should be understood that the method 1000 may include additional blocks not shown and / or some of the blocks shown may be omitted, and the scope of the present disclosure is not limited in this regard.

[0084] At block 1010, UE 110 receives a waveform indication from base station 120 via layer 1 signaling or layer 2 signaling using a transceiver of UE 110, the waveform indication indicating a target waveform from a set of waveforms to be used by UE 110. At block 1020, UE 110 sends an uplink transmission to base station 120 using the transceiver of UE 110 based on the target waveform.

[0085] In some embodiments, prior to receiving the layer 1 signaling or the layer 2 signaling, the UE 110 receives layer 3 signaling indicating whether switching between sets of waveforms is enabled or disabled from the base station 120 using a transceiver of the UE 110. In some embodiments, the layer 3 signaling is specific to the cell in which the UE 110 is located. In some embodiments, the layer 3 signaling is used for Msg3 physical uplink shared channel (PUSCH) initial transmission or retransmission.

[0086] In some embodiments, layer 3 signaling is specific to UE 110. In some embodiments, layer 3 signaling is used for dynamically scheduled PUSCH. In some embodiments, layer 3 signaling is used for configured grant PUSCH.

[0087] In some embodiments, at least one of the following is satisfied: the layer 1 signaling includes downlink control information (DCI); and the layer 2 signaling includes a medium access control (MAC) control element (CE). In some embodiments, the UE 110 uses a transceiver of the UE 110 to send UE capability information to the base station indicating whether the UE 110 supports switching between sets of waveforms.

[0088] In some embodiments, the set of waveforms includes a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) waveform and a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform. In some embodiments, the waveform indication indicates whether a DFT-S-OFDM waveform or a CP-OFDM waveform is to be used by indicating whether a transform precoder is enabled or disabled.

[0089] In some embodiments, the uplink transmission is a dynamically scheduled PUSCH. In some embodiments, the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: a bit field in the DCI that schedules the dynamically scheduled PUSCH; a reinterpretation bit in an existing field of the DCI; an information element in a time domain resource allocation (TDRA) table of the DCI; and a MAC CE.

[0090] In some embodiments, the uplink transmission is a Msg3 PUSCH initial transmission and retransmission. In some embodiments, UE 110 selects a dedicated PRACH preamble in a shared physical random access channel (PRACH) opportunity reserved by base station 120 or a separately configured PRACH opportunity, and transmits the selected dedicated PRACH preamble to base station 120 using a transceiver of UE 110, wherein UE capability information indicating whether UE 110 supports switching between waveform sets is implicitly notified to base station 120 via the dedicated PRACH preamble detected by base station 120.

[0091] In some embodiments, UE 110 sends a request to base station 120 to switch waveforms using a transceiver of UE 110 based on a comparison measurement between a reference signal received power (RSRP) of downlink communications and a predetermined threshold.

[0092] In some embodiments, the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: a bit of a random access response (RAR) grant message; a reinterpretation bit in a hybrid automatic repeat request (HARQ) process number field; and a reserved bit in a MAC random access response (RAR) control element.

[0093] In some embodiments, the bits of the RAR grant message are at least one of: bits associated with a time domain resource allocation (TDRA) table; bits of a modulation and coding scheme (MCS) information field; bits of a transmit power control (TPC) information field; bits of a channel state information (CSI) request information field; and bits of a PUSCH frequency resource allocation information field.

[0094] In some embodiments, the bit associated with the TDRA table is at least one of: an information element in a new TDRA table; and a reinterpreted bit in an existing field of an existing TDRA table for scheduling Msg3 PUSCH initial transmission and retransmission of DCI; and a bit added to the existing TDRA table from CSI request field information.

[0095] In some embodiments, the uplink transmission is a MsgA PUSCH initial transmission and a retransmission. In some embodiments, the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: an information element in a new TDRA table; and a reinterpretation bit in an existing field of an existing TDRA table for MsgA PUSCH initial transmission and retransmission; a bit added to the existing TDRA table from CSI request field information; and a reserved bit of a fallback MAC RAR control element.

[0096] In some embodiments, the uplink transmission is a configured grant PUSCH. In some embodiments, the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: a one-bit field in the TDRA table of the DCI scheduling the configured grant PUSCH; a reinterpretation bit in an existing field of the DCI. In some embodiments, the uplink transmission is a small data transmission (SDT); and a new field in the timeDomainResourceAllocation IE of the ConfiguredGrantConfig IE.

[0097] Fig.11 A flowchart illustrating an example method 1100 for waveform indication implemented at a BS according to some embodiments of the present disclosure is illustrated. The method 1100 may be implemented in a device, such as Figure 1 The method 1100 is implemented at the illustrated BS 120. It should be appreciated that the method 1100 may include additional blocks not shown and / or some of the illustrated blocks may be omitted, and the scope of the present disclosure is not limited in this regard.

[0098] At block 1110, BS 120 sends a waveform indication to UE 110 via layer 1 signaling or layer 2 signaling using a transceiver of BS 120, the waveform indication indicating a target waveform from a set of waveforms to be used by UE 110. At block 1120, BS 120 receives an uplink transmission from UE 110 based on the target waveform using a transceiver of BS 120.

[0099] In some embodiments, before sending layer 1 signaling or layer 2 signaling, BS 120 sends layer 3 signaling to UE 110 using a transceiver of BS 120, indicating whether switching between sets of waveforms is enabled or disabled. In some embodiments, layer 3 signaling is specific to the cell in which UE 110 is located.

[0100] In some embodiments, layer 3 signaling is used for Msg3 physical uplink shared channel (PUSCH) initial transmission or retransmission. In some embodiments, layer 3 signaling is specific to UE 110. In some embodiments, layer 3 signaling is used for dynamically scheduled PUSCH. In some embodiments, layer 3 signaling is used for configured grant PUSCH.

[0101] In some embodiments, at least one of the following is satisfied: the layer 1 signaling includes downlink control information (DCI); and the layer 2 signaling includes a medium access control (MAC) control element (CE). In some embodiments, BS 120 receives UE capability information from UE 110 using a transceiver of BS 120 indicating whether UE 110 supports switching between sets of waveforms.

[0102] In some embodiments, the set of waveforms includes a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) waveform and a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform. In some embodiments, the waveform indication indicates whether a DFT-S-OFDM waveform or a CP-OFDM waveform is to be used by indicating whether a transform precoder is enabled or disabled.

[0103] In some embodiments, the uplink transmission is a dynamically scheduled PUSCH. In some embodiments, the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: a bit field in the DCI that schedules the dynamically scheduled PUSCH; a reinterpretation bit in an existing field of the DCI; an information element in a time domain resource allocation (TDRA) table of the DCI; and a MAC CE.

[0104] In some embodiments, the uplink transmission is a Msg3 PUSCH initial transmission and retransmission. In some embodiments, BS 120 receives a dedicated PRACH preamble in a shared PRACH opportunity or a separately configured PRACH opportunity selected by UE 110 from UE 110 using a transceiver of BS 120, wherein UE capability information indicating whether UE 110 supports switching between sets of waveforms is implicitly notified to the base station via the dedicated PRACH preamble detected by BS 120.

[0105] In some embodiments, BS 120 receives a request to switch waveforms from UE 110 using a transceiver of BS 120 based on a comparison measurement between a reference signal received power (RSRP) of downlink communications and a predetermined threshold.

[0106] In some embodiments, the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: a bit of a random access response (RAR) grant message; a reinterpretation bit in a hybrid automatic repeat request (HARQ) process number field; and a reserved bit in a MAC random access response (RAR) control element.

[0107] In some embodiments, the bits of the RAR grant message are at least one of: bits associated with a time domain resource allocation (TDRA) table; bits of a modulation and coding scheme (MCS) information field; bits of a transmit power control (TPC) information field; bits of a channel state information (CSI) request information field; and bits of a PUSCH frequency resource allocation information field.

[0108] In some embodiments, the bit associated with the TDRA table is at least one of: an information element in a new TDRA table; and a reinterpreted bit in an existing field of an existing TDRA table for scheduling Msg3 PUSCH initial transmission and retransmission of DCI; and a bit added to the existing TDRA table from CSI request field information.

[0109] In some embodiments, the uplink transmission is a MsgA PUSCH initial transmission and a retransmission. In some embodiments, the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: an information element in a new TDRA table; and a reinterpretation bit in an existing field of an existing TDRA table for MsgA PUSCH initial transmission and retransmission; a bit added to the existing TDRA table from CSI request field information; and a reserved bit of a fallback MAC RAR control element.

[0110] In some embodiments, the uplink transmission is a configured grant PUSCH. In some embodiments, the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: a one-bit field in the TDRA table of the DCI scheduling the configured grant PUSCH; a reinterpretation bit in an existing field of the DCI. In some embodiments, the uplink transmission is a small data transmission (SDT); and a new field in the timeDomainResourceAllocation IE of the ConfiguredGrantConfig IE.

[0111] Fig.121 is a simplified block diagram of a device 1200 suitable for implementing embodiments of the present disclosure. For example, UE 110 and BS 120 may be implemented by device 1200. As shown, device 1200 includes a processor 1210, a memory 1220 coupled to processor 1210, and a transceiver 1240 coupled to processor 1210.

[0112] The transceiver 1240 is used for bidirectional communication. The transceiver 1240 is coupled to at least one antenna to facilitate communication. The transceiver 1240 may include a transmitter circuit (e.g., associated with one or more transmit chains) and / or a receiver circuit (e.g., associated with one or more receive chains). The transmitter circuit and the receiver circuit may use common circuit elements, different circuit elements, or a combination thereof.

[0113] Processor 1210 may be of any type suitable for the local technology network and may include one or more of the following: as non-limiting examples, a baseband processor, a general purpose computer, a special purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. Device 1200 may have multiple processors, such as application specific integrated circuit chips, which are time-constrained by a clock that synchronizes a main processor.

[0114] The memory 1220 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memories include, but are not limited to, read-only memory (ROM) 1224, electrically programmable read-only memory (EPROM), flash memory, hard disk, compact disk (CD), digital video disk (DVD), and other magnetic storage devices and / or optical storage devices. Examples of volatile memories include, but are not limited to, random access memory (RAM) 1222 and other volatile memories that do not persist during power-off time.

[0115] Computer program 1230 includes computer executable instructions executed by associated processor 1210. Program 1230 may be stored in ROM 1224. Processor 1210 may perform any suitable actions and processes by loading program 1230 into RAM 1222.

[0116] The embodiments of the present disclosure can be implemented with the aid of program 1230, so that the device 1200 can execute the following steps: Figures 2 to 11 Any process of the present disclosure discussed. The embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.

[0117] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions (such as those included in a program module) that are executed in a device on a target real or virtual processor to perform the above-referenced Fig.10 The method 1000 and / or as described above with reference to Fig.11 The method 1100 is described.

[0118] Further, although the operations are shown in a particular order, this should not be understood as requiring such operations to be performed in a sequential order or in the particular order shown, or requiring the execution of all the operations shown to achieve the desired result. In some cases, multitasking and parallel processing may be advantageous. Although the above discussion includes several specific implementation details, these details should not be understood as limitations on the scope of the present disclosure, but should be considered as descriptions of features that may be peculiar to a particular embodiment. Certain features described in the context of different embodiments may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented in multiple embodiments individually or in the form of any suitable sub-combination.

[0119] Although the disclosure has been described in language specific to structural features and / or methodological acts, it should be understood that the disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A baseband processor of a user equipment (UE), the baseband processor being configured to perform operations, the operations comprising: receiving, using a transceiver of the UE, a waveform indication from a base station via layer 1 signaling or layer 2 signaling, the waveform indication indicating a target waveform to be used by the UE from a set of waveforms; as well as An uplink transmission is sent to the base station based on the target waveform using the transceiver of the UE.

2. The baseband processor of claim 1, wherein the operations further comprise: Prior to receiving the layer 1 signaling or the layer 2 signaling, layer 3 signaling indicating whether switching between the sets of waveforms is enabled or disabled is received from the base station using the transceiver of the UE.

3. The baseband processor of claim 2, wherein the layer 3 signaling is specific to the cell in which the UE is located.

4. The baseband processor according to claim 3, wherein the layer 3 signaling is used for Msg3 physical uplink shared channel (PUSCH) initial transmission or retransmission.

5. The baseband processor of claim 2, wherein the layer 3 signaling is specific to the UE.

6. The baseband processor of claim 5, wherein the layer 3 signaling is for dynamically scheduled PUSCH.

7. The baseband processor of claim 2, wherein the layer 3 signaling is for a configured grant PUSCH.

8. The baseband processor of claim 1, wherein at least one of the following: The layer 1 signaling comprises downlink control information (DCI); and The layer 2 signaling includes a medium access control (MAC) control element (CE).

9. The baseband processor of claim 1, wherein the operations further comprise: UE capability information indicating whether the UE supports switching between the sets of waveforms is sent to the base station using the transceiver of the UE.

10. The baseband processor of claim 1, wherein the set of waveforms includes a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) waveform and a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform.

11. The baseband processor of claim 8, wherein the waveform indication indicates whether the DFT-S-OFDM waveform or the CP-OFDM waveform is to be used by indicating whether a transform precoder is enabled or disabled.

12. The baseband processor of claim 1, wherein the uplink transmission is a dynamically scheduled PUSCH.

13. The baseband processor of claim 12, wherein the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: A bit field in the DCI for scheduling the dynamically scheduled PUSCH; a reinterpretation bit in an existing field of the DCI; Information elements in a time domain resource allocation (TDRA) table of the DCI; and MAC CE.

14. The baseband processor according to claim 1, wherein the uplink transmission is Msg3PUSCH initial transmission and retransmission.

15. The baseband processor of claim 14, wherein the operations further comprise: selecting a dedicated physical random access channel (PRACH) preamble in a shared PRACH opportunity or an individually configured PRACH opportunity reserved by the base station, and sending the selected dedicated PRACH preamble to the base station using the transceiver of the UE, Wherein UE capability information indicating whether the UE supports switching between the sets of waveforms is implicitly notified to the base station via the dedicated PRACH preamble detected by the BS.

16. The baseband processor of claim 14, wherein the operations further comprise: A request for switching waveforms is sent to the base station using the transceiver of the UE based on a comparison measurement between a reference signal received power (RSRP) of downlink communications and a predetermined threshold.

17. The baseband processor of claim 14, wherein the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: bits of the Random Access Response (RAR) grant message; Reinterpretation bit in the Hybrid Automatic Repeat Request (HARQ) Process Number field; and Reserved bit in the MAC Random Access Response (RAR) control element.

18. The baseband processor of claim 17, wherein the bits of the RAR grant message are at least one of: bits associated with the Time Domain Resource Allocation (TDRA) table; bits of the Modulation and Coding Scheme (MCS) information field; bits of the transmit power control (TPC) information field; bits of the Channel State Information (CSI) Request Information field; and Bits of the PUSCH frequency resource allocation information field.

19. The baseband processor of claim 18, wherein the bit associated with the TDRA table is at least one of: Information elements in the new TDRA table; and reinterpret bits in existing fields of the existing TDRA table of DCI scheduling the initial transmission and retransmission of the Msg3 PUSCH; and A bit is added to the existing TDRA table from the CSI request field information.

20. The baseband processor of claim 1, wherein the uplink transmission is MsgAPUSCH initial transmission and retransmission.

21. The baseband processor of claim 20, wherein the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: Information elements in the new TDRA table; and The reinterpretation bit in the existing field of the existing TDRA table for the MsgA PUSCH initial transmission and retransmission; Adding one bit from the CSI request field information to the existing TDRA table; and A reserved bit in the Fallback MAC RAR control element.

22. The baseband processor of claim 1, wherein the uplink transmission is a configured grant PUSCH.

23. The baseband processor of claim 22, wherein the set of waveforms includes two waveforms, and the waveform indication is received via at least one of: a bit field in the TDRA table that schedules the configured DCI granting PUSCH; reinterpretation bits in existing fields of the DCI; and field in the timeDomainResourceAllocation IE of the ConfiguredGrantConfig IE.

24. The baseband processor of claim 1, wherein the uplink transmission is a small data transmission (SDT).

25. A baseband processor of a base station (BS), the baseband processor being configured to perform operations, the operations comprising: sending, using a transceiver of the BS, a waveform indication to a UE via layer 1 signaling or layer 2 signaling, the waveform indication indicating a target waveform to be used by the UE from among a set of waveforms; as well as An uplink transmission is received from the UE based on the target waveform using a transceiver of the BS.

26. The baseband processor of claim 25, wherein the operations further comprise: Prior to sending the layer 1 signaling or the layer 2 signaling, layer 3 signaling indicating whether switching between the sets of waveforms is enabled or disabled is sent to the UE using the transceiver of the BS.

27. The baseband processor of claim 26, wherein the layer 3 signaling is specific to the cell in which the UE is located.

28. The baseband processor of claim 27, wherein the layer 3 signaling is used for Msg3 physical uplink shared channel (PUSCH) initial transmission or retransmission.

29. The baseband processor of claim 28, wherein the layer 3 signaling is specific to the UE.

30. The baseband processor of claim 29, wherein the layer 3 signaling is for a dynamically scheduled PUSCH.

31. The baseband processor of claim 26, wherein the layer 3 signaling is for a configured grant PUSCH.

32. The baseband processor of claim 25, wherein at least one of the following: The layer 1 signaling comprises downlink control information (DCI); and The layer 2 signaling includes a medium access control (MAC) control element (CE).

33. The baseband processor of claim 25, wherein the operations further comprise: UE capability information is received from the UE using the transceiver of the BS, the UE capability information indicating whether the UE supports switching between the sets of waveforms.

34. The baseband processor of claim 25, wherein the set of waveforms includes a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) waveform and a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform.

35. The baseband processor of claim 32, wherein the waveform indication indicates whether the DFT-S-OFDM waveform or the CP-OFDM waveform is to be used by indicating whether a transform precoder is enabled or disabled.

36. The baseband processor of claim 25, wherein the uplink transmission is a dynamically scheduled PUSCH.

37. The baseband processor of claim 36, wherein the set of waveforms includes two waveforms, and the waveform indication is transmitted via at least one of: A bit field in the DCI for scheduling the dynamically scheduled PUSCH; a reinterpretation bit in an existing field of the DCI; Information elements in a time domain resource allocation (TDRA) table of the DCI; and MAC CE.

38. The baseband processor of claim 25, wherein the uplink transmission is Msg3PUSCH initial transmission and retransmission.

39. The baseband processor of claim 38, wherein the operations further comprise: receiving, using the transceiver of the BS, from the UE a dedicated PRACH preamble in a shared PRACH opportunity or a separately configured PRACH opportunity selected by the UE, Wherein UE capability information indicating whether the UE supports switching between the sets of waveforms is implicitly notified to the base station via the dedicated PRACH preamble detected by the BS.

40. The baseband processor of claim 38, wherein the operations further comprise: A request for switching waveforms is received from the UE using the transceiver of the BS based on a comparison measurement between a reference signal received power (RSRP) of downlink communications and a predetermined threshold.

41. The baseband processor of claim 38, wherein the set of waveforms includes two waveforms, and the waveform indication is transmitted via at least one of: bits of the Random Access Response (RAR) grant message; The reinterpretation bit in the Hybrid Automatic Repeat Request (HARQ) Process Number field; and Reserved bit in the MAC Random Access Response (RAR) control element.

42. The baseband processor of claim 41, wherein the bits of the RAR grant message are at least one of: bits associated with the Time Domain Resource Allocation (TDRA) table; bits of the Modulation and Coding Scheme (MCS) information field; bits of the transmit power control (TPC) information field; bits of the Channel State Information (CSI) Request Information field; and Bits of the PUSCH frequency resource allocation information field.

43. The baseband processor of claim 42, wherein the bit associated with the TDRA table is at least one of: Information elements in the new TDRA table; and reinterpret bits in existing fields of the existing TDRA table of DCI scheduling the initial transmission and retransmission of the Msg3 PUSCH; and A bit is added to the existing TDRA table from the CSI request field information.

44. The baseband processor of claim 26, wherein the uplink transmission is MsgAPUSCH initial transmission and retransmission.

45. The baseband processor of claim 43, wherein the set of waveforms includes two waveforms, and the waveform indication is transmitted via at least one of: Information elements in the TDRA table; and The reinterpretation bit in the existing field of the existing TDRA table for the MsgA PUSCH initial transmission and retransmission; Adding one bit from the CSI request field information to the existing TDRA table; and A reserved bit in the Fallback MAC RAR control element.

46. ​​The baseband processor of claim 26, wherein the uplink transmission is a configured grant PUSCH.

47. The baseband processor of claim 46, wherein the set of waveforms includes two waveforms, and the waveform indication is transmitted via at least one of: a one-bit field in the TDRA table that schedules the configured DCI granting PUSCH; and reinterpretation bits in existing fields of the DCI; and field in the timeDomainResourceAllocation IE of the ConfiguredGrantConfig IE.

48. The baseband processor of claim 26, wherein the uplink transmission is a small data transmission (SDT).

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