Sounding reference signal power control in non-terrestrial networks

Abstract

Certain aspects of the present disclosure provide techniques for wireless communication by a user equipment (UE), generally including receiving signaling, the signaling indicates one or more values of a scheduling offset between a downlink slot for receiving downlink control information (DCI) and an uplink slot for transmitting a physical uplink shared channel (PUSCH) scheduled by the DCI; determining an additional offset to be used with the scheduling offset values to determine a PUSCH transmission timing; determining a power control adjustment for sounding reference signal (SRS) transmission based on a transmit power control (TPC) command received in a time interval determined by one of the scheduling offset values and the additional offset; and transmitting the SRS in the SRS transmission occasion according to the determined power control adjustment.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of and priority to U.S. Application No. 18 / 073,405, filed on December 1, 2022, which claims the benefit of and priority to U.S. Provisional Application No. 63 / 339,501, filed on May 8, 2022, both of which are assigned to the assignee of this application and are hereby expressly incorporated by reference in their entirety as if fully set forth below and for all applicable purposes. Background Art

[0003] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for sounding reference signal (SRS) power control in non-terrestrial networks (NTNs).

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, broadcast, or other similar types of services. These wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or other resources) with these users. Multiple access technologies may rely on any of code division, time division, frequency division, orthogonal frequency division, single carrier frequency division, or time division synchronous code division, to name just a few examples. These and other multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level.

[0005] Although wireless communication systems have made great technological progress over the years, challenges still exist. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and wireless receivers, undermining the various established wireless channel measurement and reporting mechanisms used to manage and optimize the use of limited wireless channel resources. Therefore, there is a need to further improve wireless communication systems to overcome various challenges. Summary of the invention

[0006] In one aspect, a method for wireless communication by a user equipment (UE) includes: receiving signaling indicating one or more values ​​for a scheduling offset between a downlink time slot for receiving downlink control information (DCI) and an uplink time slot for sending a physical uplink shared channel (PUSCH) scheduled by the DCI; determining an additional offset to be used with these scheduling offset values ​​to determine the PUSCH transmission timing; determining a power control adjustment for sounding reference signal (SRS) transmission based on a transmit power control (TPC) command received in a time interval determined by one of the scheduling offset values ​​and the additional offset; and transmitting the SRS in the SRS transmission opportunity according to the determined power control adjustment.

[0007] Other aspects provide: an apparatus operable to, configured to, or otherwise adapted to perform the aforementioned method and those described elsewhere herein; a non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of the apparatus, cause the apparatus to perform the aforementioned method and those described elsewhere herein; a computer program product embodied on a computer-readable storage medium, the computer-readable storage medium comprising code for performing the aforementioned method and those described elsewhere herein; and an apparatus comprising components for performing the aforementioned method and those described elsewhere herein. By way of example, an apparatus may include a processing system, a device having a processing system, or a processing system cooperating through one or more networks.

[0008] For purposes of illustration, the following description and drawings set forth certain features. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings depict certain features of the aspects described herein and should not be considered to limit the scope of the disclosure.

[0010] Figure 1 is a block diagram conceptually illustrating an example wireless communication network.

[0011] Figure 2 is a block diagram conceptually illustrating aspects of example base stations and user equipment.

[0012] Figure 3A , Figure 3B , Figure 3C and Figure 3D Various example aspects of data structures for a wireless communication network are depicted.

[0013] Figure 4 An exemplary non-terrestrial network (NTN) is depicted.

[0014] Figure 5A and Figure 5B Depicted is an example architecture of NTN.

[0015] Figure 6 Depicted is an example timeline from downlink control information (DCI) to physical uplink shared channel (PUSCH) in accordance with aspects of the present disclosure.

[0016] Figure 7 Timing for SRS transmissions in accordance with aspects of the present disclosure is depicted.

[0017] Figure 8 Depicted is a call flow diagram for SRS transmit power control in accordance with aspects of the present disclosure.

[0018] Fig. 9 Example operations for wireless communications by user equipment are illustrated in accordance with aspects of the present disclosure.

[0019] Fig.10 An example of a communication device according to aspects of the present disclosure is shown.

[0020] The appendix includes details of various aspects of the disclosure. DETAILED DESCRIPTION

[0021] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for sounding reference signal (SRS) power control in non-terrestrial networks (NTNs).

[0022] In wireless networks, the scheduling offset (referred to as k2) indicates the time (in number of time slots) that a base station (e.g., gNB) expects to receive a physical uplink shared channel (PUSCH) from a UE after scheduling the PUSCH transmission from the UE. In conventional terrestrial networks (TNs), the scheduling offset can be several time slots. For NTNs, an additional scheduling offset parameter (K offset ) to accommodate larger propagation delays (and ensure causality, meaning the gNB has some guarantee that the PUSCH comes from the UE it schedules). The combined offsets (e.g., k2 and K offset ) is expected to cover the round trip time (RTT) between the serving satellite and the reference point and the RTT of the serving link.

[0023] In a typical system, the sounding reference signal (SRS) transmit power control adjustment may take into account the regular scheduling offset k2, but does not take into account the additional scheduling offset for NTN. Therefore, the prior art may be suboptimal for adjusting SRS transmit power in NTN.

[0024] However, aspects of the present disclosure provide techniques for SRS transmit power control adjustment that take into account both the conventional scheduling offset k2 and the additional scheduling offset for NTN.Thus, the techniques presented herein can improve transmit power control of SRS transmissions in NTN.

[0025] Introduction to Wireless Communication Networks

[0026] Figure 1 An example of a wireless communication system 100 is depicted in which various aspects described herein may be implemented.

[0027] In general, the wireless communication system 100 includes a base station (BS) 102, a user equipment (UE) 104, one or more core networks (such as an evolved packet core (EPC) 160 and a 5G core (5GC) network 190), which interoperate to provide wireless communication services.

[0028] The base station 102 may provide an access point to the EPC 160 and / or 5GC 190 for the user equipment 104, and may perform one or more of the following functions: transmission of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment tracking, RAN information management (RIM), paging, positioning, delivery of warning messages, and other functions. In various contexts, a base station may include and / or be referred to as a gNB, Node B, eNB, ng-eNB (e.g., an eNB that has been enhanced to provide connectivity to both the EPC 160 and 5GC 190), an access point, a transceiver base station, a radio base station, a radio transceiver, or a transceiver functional unit, or a transmitting and receiving point.

[0029] Base stations 102 communicate wirelessly with UEs 104 via communication links 120. Each of base stations 102 may provide communication coverage for a respective geographic coverage area 110, which may overlap in some cases. For example, a small cell 102' (e.g., a low power base station) may have a coverage area 110' that overlaps with the coverage area 110 of one or more macro cells (e.g., a high power base station).

[0030] The communication link 120 between the base station 102 and the UE 104 may include uplink (UL) (also known as reverse link) transmissions from the user equipment 104 to the base station 102 and / or downlink (DL) (also known as forward link) transmissions from the base station 102 to the user equipment 104. In various aspects, the communication link 120 may employ multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity.

[0031] Examples of UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players, cameras, game consoles, tablet devices, smart devices, wearable devices, vehicles, electric meters, gas pumps, large or small kitchen appliances, health care equipment, implants, sensors / actuators, displays, or other similar devices. Some of the UEs 104 may be Internet of Things (IoT) devices (e.g., parking meters, gas pumps, ovens, vehicles, heart monitors, or other IoT devices), always-on (AON) devices, or edge processing devices. UE 104 may also be more generally referred to as stations, mobile stations, subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, mobile phones, user agents, mobile clients, or clients.

[0032] Communications using higher frequency bands may have higher path loss and shorter range than communications at lower frequencies. Figure 1 180) can utilize beamforming 182 with UE 104 to improve path loss and range. For example, base station 180 and UE 104 can each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming.

[0033] In some cases, base station 180 may send beamformed signals in one or more transmit directions 182' to UE 104. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182". UE 104 may also send beamformed signals to base station 180 in one or more transmit directions 182". Base station 180 may also receive beamformed signals from UE 104 in one or more receive directions 182'. Base station 180 and UE 104 may then perform beam training to determine the best receive direction and transmit direction for each of base station 180 and UE 104. It is worth noting that the transmit direction and receive direction of base station 180 may be the same or different. Similarly, the transmit direction and receive direction of UE 104 may be the same or different.

[0034] The wireless communication network 100 includes a scheduling offset component 199, which can be configured to perform various operations described herein for collecting and reporting data for the NTN. The wireless network 100 also includes a scheduling offset component 198, which can be configured to perform various operations described herein for processing data collected and reported for the NTN.

[0035] Figure 2 Aspects of an example base station (BS) 102 and user equipment (UE) 104 are depicted.

[0036] In general, the base station 102 includes various processors (e.g., 220, 230, 238, and 240), antennas 234a-234t (collectively 234), transceivers 232a-232t (collectively 232) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., data source 212) and wireless reception of data (e.g., data sink 239). For example, the base station 102 can transmit and receive data between itself and the user equipment 104.

[0037] Base station 102 includes a controller / processor 240 that can be configured to perform various functions related to wireless communication. In the depicted example, controller / processor 240 includes a scheduling offset component 241, which can represent Figure 1 The scheduling offset component 199. It is worth noting that, although depicted as an aspect of the controller / processor 240, in other specific implementations, the scheduling offset component 241 can be additionally or alternatively implemented in various other aspects of the base station 102.

[0038] In general, the user equipment 104 includes various processors (e.g., 258, 264, 266, and 280), antennas 252a-252r (collectively referred to as 252), transceivers 254a-254r (collectively referred to as 254) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., data source 262) and wireless reception of data (e.g., data sink 260).

[0039] The user equipment 104 includes a controller / processor 280 that can be configured to perform various functions related to wireless communication. In the depicted example, the controller / processor 280 includes a scheduling offset component 281, which can represent Figure 1 The scheduling offset component 198. It is worth noting that, although depicted as an aspect of the controller / processor 280, in other specific implementations, the scheduling offset component 281 can be additionally or alternatively implemented in various other aspects of the user equipment 104.

[0040] FIG. 3A to FIG. 3D Describes a method for use in a wireless communication network such as Figure 1 In particular, Figure 3A is a diagram 300 illustrating an example of a first subframe within a 5G (e.g., 5G NR) frame structure, Figure 3B is a diagram 330 illustrating an example of a DL channel within a 5G subframe, Figure 3Cis a diagram 350 illustrating an example of a second subframe within a 5G frame structure, and Figure 3D FIG380 is a diagram illustrating an example of UL channels within a 5G subframe.

[0041] Later in this disclosure, Figure 1 , Figure 2 and FIG. 3A to FIG. 3D for further discussion.

[0042] Introduction to mmWave Wireless Communications

[0043] In wireless communications, the electromagnetic spectrum is often subdivided into various classes, bands, channels, or other characteristics. The subdivision is usually provided based on wavelength and frequency, where frequency may also be referred to as a carrier, subcarrier, channel, tone, or subband.

[0044] In 5G, two initial operating bands have been identified as frequency ranges designated FR1 (410MHz–7.125GHz) and FR2 (24.25GHz–52.6GHz). Frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Although a portion of FR1 is greater than 6GHz, FR1 is often (interchangeably) referred to as the “below 6GHz” band in various documents and articles. Similar naming issues sometimes arise with respect to FR2, although unlike the extremely high frequency (EHF) band (30GHz–300GHz) identified by the International Telecommunication Union (ITU) as the “millimeter wave” (“mmW” or “mmWave”) band, FR2 is often (interchangeably) referred to as the “millimeter wave” band in various documents and articles because the wavelengths at these frequencies are between 1 mm and 10 mm. Radio waves in this band may be referred to as millimeter waves. Near mmWave can extend down to frequencies of 3GHz with a wavelength of 100 mm. The Super High Frequency (SHF) band extends between 3 GHz and 30 GHz and is also referred to as centimeter waves.

[0045] In view of the above aspects, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, it can broadly represent a frequency that can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, it can broadly represent a frequency that can include mid-band frequencies, can be within FR2, or can be within the EHF band.

[0046] Communications using mmWave / near mmWave radio frequency bands (e.g., 3 GHz–300 GHz) may have higher path loss and shorter range than lower frequency communications. Figure 1In the present invention, the mmWave base station 180 can utilize beamforming 182 with the UE 104 to improve path loss and range. To this end, the base station 180 and the UE 104 can each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming.

[0047] In some cases, base station 180 may send beamformed signals in one or more transmit directions 182' to UE 104. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182". UE 104 may also send beamformed signals to base station 180 in one or more transmit directions 182". Base station 180 may receive beamformed signals from UE 104 in one or more receive directions 182'. Base station 180 and UE 104 may then perform beam training to determine the best receive direction and transmit direction for each of base station 180 and UE 104. Notably, the transmit direction and receive direction of base station 180 may be the same or different. Similarly, the transmit direction and receive direction of UE 104 may be the same or different.

[0048] Aspects related to non-terrestrial networks

[0049] Non-terrestrial networks (NTN) generally refer to networks or network segments that use RF resources onboard satellites. NTN signaling can be regenerative (with onboard NTN processing) or transparent (e.g., so-called bent pipe, where the satellite transmits what it receives back to Earth with only amplification and a shift from uplink to downlink frequency).

[0050] Figure 4 An example of a wireless communication network 400 including a non-terrestrial network (NTN) entity 140 (which may generally be referred to as NTN 140) in which aspects of the present disclosure may be practiced is illustrated. In some examples, the wireless communication network 400 may implement aspects of the wireless communication network 100. For example, the wireless communication network 400 may include a BS 102, a UE 104, and a non-terrestrial network entity 140, such as a satellite. In the case of a terrestrial network, the BS 102 may serve a coverage area or cell 110a, and in the case of a non-terrestrial network (NTN), the non-terrestrial network entity 140 may serve a coverage area 110b. Some NTNs may employ airborne platforms (e.g., drones or balloons) and / or spaceborne platforms (e.g., satellites).

[0051] As part of wireless communications in the NTN, the non-terrestrial network entity 140 may communicate with the BS 102 and the UE 104. In the case of a terrestrial network, the UE 104 may communicate with the BS 102 via a communication link 414. In the case of NTN wireless communications, the non-terrestrial network entity 140 may be a serving cell for the UE 104 via a communication link 416. In certain aspects, the non-terrestrial network entity 140 may act as a repeater (or remote radio head) for the BS 102 and the UE 104. For example, the BS 102 may communicate with the non-terrestrial network entity 140 via a communication link 418, and the non-terrestrial network entity may relay signaling between the BS 102 and the UE 104 via the communication links 416, 418.

[0052] The typical coverage area size of NTN beams is 100km to 1000km for LEO satellites and 200km to 3500km for geostationary orbit (GEO) satellites. Figure 5A As shown, NG-RAN deployment may include satellites and NTN gateways (GW) acting as cellular Uu links between UE and terrestrial network (TN) gNB (and 5G core network). NG-RAN generally refers to the radio access network for 5G and provides both NR and LTE radio access. The link between UE and satellite is generally referred to as a service link, while the link between satellite and GW is generally referred to as a feeder link.

[0053] like Figure 5B As shown, the satellite communicates with different UEs as it moves in its orbit. In the illustrated example, the satellite communicates with three UEs (UE 1, UE 2, and UE 3) through three different beams (beam 1, beam 2, and beam 3) as the satellite orbits. The uplink signal from the UE experiences a round trip delay (RTD), which is typically the sum of the delay on the service link plus the delay on the feeder link. The maximum RTD is typically about 541.46ms for a GEO satellite, 25.77ms for a LEO satellite at an altitude of 600km, and 41.77ms for a LEO satellite at an altitude of 1200km. Compared to the speed of the LEO satellite, the UE speed is typically negligible.

[0054] Aspects related to SRS power control in non-terrestrial networks

[0055] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for sounding reference signal (SRS) power control in non-terrestrial networks (NTNs).

[0056] As mentioned above, for NTN, an additional scheduling offset K can be used offsetto accommodate larger propagation delays. The combined offset is expected to cover the RTT between the serving satellite and the reference point as well as the RTT of the serving link.

[0057] Figure 6 The following diagram illustrates how the schedule offset K2 can be compared with the NTN schedule offset K offset As shown in the figure, after transmitting the PDCCH scheduling the PUSCH from the UE in time slot n (using DCI), the gNB expects the PUSCH in time slot n+K2+K offset Appears in, among which K offset Greater than the round trip delay (RTD) between the UE and the gNB. The UE can then know when to send the PUSCH based on this RTD so that it arrives at the gNB when expected.

[0058] The scheduling offset may be applied to various types of uplink transmissions, such as physical random access channel (PRACH) transmissions (e.g., Msg1 in 4-step RACH), MsgA (e.g., PRACH sequence and PUSCH as in 2-step RACH), PUSCH or PUCCH transmissions.

[0059] In some cases, a UE-specific additional scheduling offset K offset Can be based on the (RRC configured) cell-specific Koffset K cell，offset and the (UE-specific) difference signaled by the network (called K UE，offset ) to determine as follows:

[0060] K offset =K cell，offset -K UE，offset .

[0061] This difference may be signaled, for example, via a MAC CE. offset Signaling a UE-specific difference value can save signaling overhead by using fewer bits compared to the absolute value of .

[0062] As described above, in typical systems, SRS transmit power control adjustment considers the regular scheduling offset k2, but does not consider the additional scheduling offset for NTN. However, aspects of the present disclosure provide techniques for SRS transmit power control adjustment that consider both the regular scheduling offset k2 and the additional scheduling offset for NTN.

[0063] For reference Figure 7 The call flow diagram 700 of FIG. 7 is used to understand the technique for SRS transmit power control in NTN presented herein.

[0064] As shown, the network may indicate a set of scheduling offset (k2) values ​​to the UE. For semi-persistent or periodic SRS transmissions, the UE may determine a power control adjustment based on a TPC command received in a time interval determined by one of the scheduling offset values ​​and the additional offset transmit power. The UE may then transmit the SRS according to the determined power control adjustment.

[0065] Figure 8 An example of a time interval in which TPC commands can be accumulated is illustrated. As shown in the figure, for an SRS transmission opportunity i, the UE can accumulate a first number k before the previous SRS transmission opportunity i-i0 SRS The symbol starts at (i-i0)-1 and precedes the SRS transmission opportunity i by a second number k. SRS (i) All TPC commands received in the period ending at the symbol of (i).

[0066] In some cases, if the SRS transmission is semi-persistent or periodic, K SRS (i) is the quantity K SRS，min The number of symbols is equal to the number of symbols per time slot. The product of the sum of the minimum of the values ​​provided by k2 in PUSCH-ConfigCommon for the active UL BWP b of carrier f serving cell c and + 2 μ Koffset, where Koffset is cell-specific or UE-specific if a UE-specific value is indicated, and μ is the value corresponding to 2 μ × Subcarrier spacing index for subcarrier spacing of 15 kHz.

[0067] In some cases, if the SRS transmission is semi-persistent or periodic, K SRS (i) is the quantity K SRS，min The number of symbols is equal to the number of symbols per time slot. The product of the sum of the minimum of the values ​​provided by k2 in PUSCH-ConfigCommon for the active UL BWP b of carrier f serving cell c and 2 μ K offset , where K offset =K cell，offset -K UE，offset , where K cell，offset Provided by CellSpecificKoffset, and K UE，offset Provided by the MAC CE command; otherwise, if they are not provided separately, K cell，offset =0 or K UE，offset = 0. μ corresponds to 2 μ× Subcarrier spacing index for subcarrier spacing of 15 kHz.

[0068] Example Operation of User Equipment

[0069] Fig. 9 The method for use by a UE such as Figure 1 and Figure 2 Method 900 for performing wireless communications with a UE 104).

[0070] The method 900 begins at 905 by receiving signaling indicating one or more values ​​for scheduling offsets between a downlink time slot for receiving downlink control information (DCI) and an uplink time slot for transmitting a physical uplink shared channel (PUSCH) scheduled by the DCI. In some cases, the operation of this step refers to the operation of Fig.10 The described circuits for transmitting and / or codes for transmitting may be or may be performed by circuits for transmitting and / or codes for transmitting.

[0071] The method 900 then proceeds to step 910, which is to determine an additional offset to be used with these scheduling offset values ​​to determine the PUSCH transmission timing. Figure 6 As shown, the scheduling offset K2 can be compared with the NTN scheduling offset K offset Used together, because the gNB can expect PUSCH in time slot n+K2+K offset Appears in, among which K offset The UE can then know when to send the PUSCH (e.g., PUSCH transmission timing) based on the RTD so that it arrives at the gNB when expected. In some cases, the operation of this step refers to the operation of Fig.10 The described circuits for transmitting and / or codes for transmitting may be or may be performed by circuits for transmitting and / or codes for transmitting.

[0072] Method 900 then proceeds to step 915, where a power control adjustment for sounding reference signal (SRS) transmission is determined based on a transmit power control (TPC) command received in a time interval determined by one of the scheduling offset values ​​and the additional offset. In some cases, the operation of this step refers to as described in reference to Fig.10 The described circuits for transmitting and / or code for transmitting may be or may be performed by the circuits for transmitting and / or code for transmitting.

[0073] The method 900 then proceeds to step 920, which is to transmit the SRS in the SRS transmission opportunity according to the determined power control adjustment. In some cases, the operation of this step refers to the operation of Fig.10The described circuits for transmitting and / or code for transmitting may be or may be performed by the circuits for transmitting and / or code for transmitting.

[0074] In some aspects, the SRS transmissions are semi-persistent or periodic.

[0075] In some aspects, the additional offset is determined based on at least one of: a configured cell-specific additional offset value, or a UE-specific differential offset value.

[0076] In some aspects, the additional offset is determined by subtracting a UE-specific difference offset value from a cell-specific additional offset value.

[0077] In some aspects, the method 900 further includes receiving a medium access control (MAC) control element (CE) indicating a UE-specific differential offset value. In some cases, the operation of this step refers to as described in reference to Fig.10 The described circuits for use and / or codes for use may be or may be executed by circuits for use and / or codes for use.

[0078] In some aspects, the time interval is determined based on a parameter representing a number of symbols and is determined based on a number of symbols per time slot, a minimum value of a scheduling offset value, and an additional offset value.

[0079] In some aspects, the parameter is determined as the product of the number of symbols per slot and the minimum sum of the scheduling offset values, which is 2 μ K offset , where K offset is the additional offset value, and μ is the value corresponding to 2 μ ×15kH z The subcarrier spacing index of the subcarrier spacing.

[0080] In some aspects, the parameter is determined as the product of the number of symbols per slot and the minimum sum of the scheduling offset values, which is 2 μ K offset , where K offset =K cell，offset -K UE，offset , where K cell，offset is the configured cell-specific additional offset value, and K UE，offset is the UE-specific difference offset value, and μ is the value corresponding to 2 μ × Subcarrier spacing index for subcarrier spacing of 15 kHz.

[0081] In some aspects, without configuring a cell-specific additional offset value, it is assumed that K cell，offset is 0, and in the case where no UE-specific difference offset value is signaled, it is assumed that K UE，offsetis 0. μ corresponds to 2 μ × Subcarrier spacing index for subcarrier spacing of 15 kHz.

[0082] In one aspect, method 900 or any aspect related thereto may be performed by an apparatus such as Fig.10 The method 900 is performed by a communication device 1000, which includes various components that are operable, configured, or suitable for performing the method 900. The communication device 1000 is described in more detail below.

[0083] It should be noted that Fig. 9 This is merely one example of a method, and other methods including fewer, additional, or alternative steps are also possible consistent with the present disclosure.

[0084] Example Communication Device

[0085] Fig.10 Depicted are aspects of an example communications device 1000. In some aspects, communications device 1000 is user equipment, such as described above with respect to Figure 1 and Figure 2 UE 104 is described.

[0086] The communication device 1000 includes a processing system 1005 coupled to a transceiver 1065 (e.g., a transmitter and / or a receiver). The transceiver 1065 is configured to transmit and receive signals for the communication device 1000, such as various signals as described herein, via an antenna 1070. The processing system 1005 may be configured to perform processing functions for the communication device 1000, including processing signals received and / or to be transmitted by the communication device 1000.

[0087] The processing system 1005 includes one or more processors 1010. In various aspects, the one or more processors 1010 may represent one or more of the receive processor 258, the transmit processor 264, the TX MIMO processor 266, and / or the controller / processor 280, as shown in FIG. Figure 2 The one or more processors 1010 are coupled to the computer readable medium / memory 1035 via the bus 1060. In some aspects, the computer readable medium / memory 1035 is configured to store instructions (e.g., computer executable code) that, when executed by the one or more processors 1010, cause the one or more processors 1010 to perform operations related to Fig. 9 The method 900 described herein or any aspect related thereto. Note that references to a processor performing a function of the communication device 1000 may include one or more processors 1010 performing that function of the communication device 1000 .

[0088] In the depicted example, computer readable medium / memory 1035 stores code (e.g., executable instructions) such as code for receiving 1040, code for determining 1045, code for determining 1050, and code for sending 1055. Processing of code for receiving 1040, code for determining 1045, code for determining 1050, and code for sending 1055 may cause communication device 1100 to perform operations related to Fig. 9 The described method 900 or any aspect related thereto.

[0089] The one or more processors 1110 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1135, including circuits such as circuits for transmitting 1115, circuits for receiving 1120, circuits for communicating 1125, and circuits for using 1130. Processing using the circuits for transmitting 1115, circuits for receiving 1120, circuits for communicating 1125, and circuits for using 1130 may cause the communication device 1100 to perform operations related to the communication. Fig. 9 The described method 900 or any aspect related thereto.

[0090] The various components of the communication device 1000 may be provided for performing Fig. 9 The components of the method 900 described herein or any aspect thereof. For example, the components for sending, transmitting, or outputting for sending may include Figure 2 The illustrated transceiver 254 and / or antenna 252 of the UE 104, and / or Fig.10 The transceiver 1065 and antenna 1070 of the communication device 1000 in FIG. 1064 may include Figure 2 The illustrated transceiver 254 and / or antenna 252 of the UE 104, and / or Fig.10 The transceiver 1065 and antenna 1070 of the communication device 1000.

[0091] Sample Clauses

[0092] Specific implementation examples are described in the following numbered clauses:

[0093] Clause 1: A method for wireless communication by a user equipment (UE), the method comprising: receiving signaling indicating one or more values ​​for a scheduling offset between a downlink time slot for receiving downlink control information (DCI) and an uplink time slot for sending a physical uplink shared channel (PUSCH) scheduled by the DCI; determining an additional offset to be used with the scheduling offset value to determine the PUSCH transmission timing; determining a power control adjustment for sounding reference signal (SRS) transmission based on a transmit power control (TPC) command received in a time interval determined by one of the scheduling offset values ​​and the additional offset; and transmitting the SRS in the SRS transmission opportunity according to the determined power control adjustment.

[0094] Clause 2: The method of clause 1, wherein the SRS transmission is semi-persistent or periodic.

[0095] Clause 3: A method as described in any of clauses 1 to 2, wherein the additional offset is determined based on at least one of: a configured cell-specific additional offset value; or a UE-specific differential offset value.

[0096] Clause 4: A method as described in clause 3, wherein the additional offset is determined by subtracting the UE-specific difference offset value from the cell-specific additional offset value.

[0097] Clause 5: The method of clause 3, further comprising receiving a medium access control (MAC) control element (CE) indicating the UE-specific differential offset value.

[0098] Clause 6: The method according to clause 3, wherein the time interval is determined based on a parameter representing the number of symbols, and is determined based on the number of symbols per time slot, the minimum value of the scheduling offset value and the additional offset value.

[0099] Clause 7: A method according to clause 6, wherein the parameter is determined as: the product of the number of symbols per time slot and the sum of: the minimum value of the scheduling offset value; and 2 μ K offset , where K offset is the additional offset value, and μ is the value corresponding to 2 μ × Subcarrier spacing index for subcarrier spacing of 15 kHz.

[0100] Clause 8: A method according to clause 6, wherein the parameter is determined as: the product of the number of symbols per time slot and the sum of: the minimum value of the scheduling offset value; and 2 μ K offset , where Koffset =K cell，offset -K UE，offset , where K cell，offset is the configured cell-specific additional offset value, and K UE，offset is the UE-specific difference offset value, and μ is the value corresponding to 2 μ × Subcarrier spacing index for subcarrier spacing of 15 kHz.

[0101] Clause 9: A method according to clause 8, wherein: in the absence of configuring the cell-specific additional offset value, assuming K cell，offset is 0; and in the case where no UE-specific difference offset value is signaled, it is assumed that K UE，offset is 0. μ corresponds to 2 μ × Subcarrier spacing index for subcarrier spacing of 15 kHz.

[0102] Additional Wireless Communications Network Considerations

[0103] The techniques and methods described herein can be used in various wireless communication networks (or wireless wide area networks (WWANs)) and radio access technologies (RATs). Although various aspects may be described herein using terms typically associated with 3G, 4G, and / or 5G (e.g., 5G New Radio (NR)) wireless technologies, various aspects of the present disclosure may be equally applicable to other communication systems and standards not explicitly mentioned herein.

[0104] 5G wireless communication networks may support a variety of advanced wireless communication services, such as enhanced mobile broadband (eMBB), millimeter wave (mmWave), machine type communication (MTC), and / or ultra-reliable, low-latency communication (URLLC) for critical missions. These services and other services may include latency and reliability requirements.

[0105] return Figure 1 , aspects of the present disclosure may be performed within the example wireless communication network 100 .

[0106] In 3GPP, the term "cell" can refer to the coverage area of ​​a Node B and / or a narrowband subsystem serving the coverage area, depending on the context in which the term is used. In NR systems, the term "cell" and BS, next generation Node B (gNB or gNodeB), access point (AP), distributed unit (DU), carrier, or transmission and reception point are used interchangeably. A BS can provide communication coverage for a macro cell, a pico cell, a femto cell, and / or other types of cells.

[0107] A macro cell may generally cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area (e.g., a stadium) and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG) and UEs of users in the home). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS, a home BS, or a home node B.

[0108] Base stations 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interact with EPC 160 via a first backhaul link 132 (e.g., S1 interface). Base stations 102 configured for 5G (e.g., 5G NR or Next Generation RAN (NG-RAN)) can interact with 5GC 190 via a second backhaul link 184. Base stations 102 can communicate with each other directly or indirectly (e.g., through EPC 160 or 5GC 190) over a third backhaul link 134 (e.g., X2 interface). The third backhaul link 134 can generally be wired or wireless.

[0109] The small cell 102' may operate in licensed and / or unlicensed spectrum. When operating in the unlicensed spectrum, the small cell 102' may employ NR and use the same 5 GHz unlicensed spectrum used by the Wi-Fi AP 150. The small cell 102' employing NR in the unlicensed spectrum may improve coverage and / or increase capacity of the access network.

[0110] Some base stations such as gNB 180 may operate in traditional sub-6 GHz spectrum, millimeter wave (mmWave) frequencies, and / or near mmWave frequencies to communicate with UE 104. When gNB 180 operates in mmWave or near mmWave frequencies, gNB 180 may be referred to as a mmWave base station.

[0111] The communication link 120 between the base station 102 and, for example, the UE 104 may be through one or more carriers. For example, for each carrier allocated in a carrier aggregation of up to Yx MHz (x component carriers) for transmission in each direction, the base station 102 and the UE 104 may use a spectrum of up to Y MHz (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, and other MHz) bandwidth. The carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​compared to UL). The component carrier may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0112] The wireless communication system 100 further includes a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 in, for example, a 2.4 GHz and / or 5 GHz unlicensed spectrum. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) to determine whether a channel is available prior to communication.

[0113] Certain UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL / UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be through various wireless D2D communication systems, such as, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE 802.11 standards, 4G (e.g., LTE), or 5G (e.g., NR), to name just a few options.

[0114] The EPC 160 may include a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. In general, the MME 162 provides bearer and connection management.

[0115] Generally speaking, user Internet Protocol (IP) packets are delivered through the Serving Gateway 166, which itself is connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation and other functions. The PDN Gateway 172 and the BM-SC 170 are connected to the IP Services 176, which may include, for example, the Internet, an Intranet, an IP Multimedia Subsystem (IMS), PS streaming services, and / or other IP services.

[0116] The BM-SC 170 may provide functionality for MBMS user service configuration and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS delivery, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and may be used to schedule MBMS delivery. The MBMS gateway 168 may be used to distribute MBMS services to base stations 102 belonging to a multicast broadcast single frequency network (MBSFN) area that broadcasts specific services, and may be responsible for session management (start / stop) and for collecting eMBMS related charging information.

[0117] 5GC 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. AMF 192 may communicate with a unified data management (UDM) 196.

[0118] AMF 192 is typically a control node that handles signaling between UE 104 and 5GC 190. In general, AMF 192 provides QoS flow and session management.

[0119] All user Internet Protocol (IP) packets are delivered through UPF 195, which is connected to IP Services 197 and provides IP address allocation for UEs and other functions for 5GC 190. IP Services 197 may include, for example, the Internet, an intranet, an IP Multimedia Subsystem (IMS), PS streaming services, and / or other IP services.

[0120] return Figure 2 , depicting a BS 102 and a UE 104 (eg, Figure 1 Various example components of a wireless communication network 100).

[0121] At BS 102, transmit processor 220 may receive data from data source 212 and control information from controller / processor 240. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), and others. In some examples, the data may be for a physical downlink shared channel (PDSCH).

[0122] A Medium Access Control (MAC)-Control Element (MAC-CE) is a MAC layer communication structure that can be used for the exchange of control commands between wireless nodes. The MAC-CE can be carried in a shared channel, such as a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), or a physical sidelink shared channel (PSSCH).

[0123] The processor 220 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols (such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH demodulation reference signal (DMRS), and a channel state information reference signal (CSI-RS)).

[0124] The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, and / or reference symbols, where applicable, and may provide an output symbol stream to a modulator (MOD) in a transceiver 232a-232t. Each modulator in the transceiver 232a-232t may process a corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from the modulators in the transceivers 232a-232t may be transmitted via antennas 234a-234t, respectively.

[0125] At the UE 104, antennas 252a-252r may receive downlink signals from the BS 102 and may provide received signals to demodulators (DEMODs) in transceivers 254a-254r, respectively. Each demodulator in the transceivers 254a-254r may condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator may further process the input samples (e.g., for OFDM) to obtain received symbols.

[0126] A MIMO detector 256 may obtain received symbols from all demodulators in transceivers 254a-254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 104 to a data sink 260, and provide decoded control information to a controller / processor 280.

[0127] On the uplink, at the UE 104, the transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH)) and control information from the controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, if applicable, further processed by the modulators in the transceivers 254a-254r (e.g., for SC-FDM), and transmitted to the BS 102.

[0128] At BS 102, uplink signals from UE 104 may be received by antennas 234 a-234 t, processed by demodulators in transceivers 232 a-232 t, detected by MIMO detector 236 if applicable, and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 104. Receive processor 238 may provide decoded data to data sink 239 and decoded control information to controller / processor 240.

[0129] Memories 242 and 282 may store data and program codes for BS 102 and UE 104, respectively.

[0130] Scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0131] 5G can utilize orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) on uplink and downlink. 5G can also support half-duplex operation using time division duplex (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) divide the system bandwidth into multiple orthogonal subcarriers, which are also often referred to as tones and boxes. Each subcarrier can be modulated with data. Modulation symbols can be transmitted in the frequency domain using OFDM, and modulation symbols can be transmitted in the time domain using SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers can depend on the system bandwidth. In some examples, the minimum resource allocation (called resource block (RB)) can be 12 consecutive subcarriers. The system bandwidth can also be divided into multiple subbands. For example, a subband can cover multiple RBs. NR can support a base subcarrier spacing (SCS) of 15KHz, and other SCSs (e.g., 30kHz, 60kHz, 120kHz, 240kHz, and others) can be defined relative to the base SCS.

[0132] In various aspects, a network device, network entity or network node may be implemented as a converged network entity, a disaggregated network entity, a component of a network entity, an integrated access and backhaul (IAB) node, a relay node, a sidelink node, to name a few examples.

[0133] The split network entity architecture may include one or more central units (CUs) that may communicate directly with the core network via a backhaul link, or indirectly with the core network through one or more split network entity units (such as a near real-time (near RT) RAN intelligent controller (RIC) via an E2 link, or a non-real-time (non-RT) RIC associated with a service management and orchestration (SMO) framework, or both. The CU may communicate with one or more distributed units (DUs) via corresponding midhaul links such as an F1 interface. The DU may communicate with one or more radio units (RUs) via corresponding fronthaul links. The RU may communicate with a corresponding UE 104 via one or more radio frequency (RF) access links. In some specific implementations, the UE 104 may be served by multiple RUs simultaneously.

[0134] Each of the units (e.g., CU, DU, RU, and near-RT RIC, non-RT RIC, and SMO framework) may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to the communication interface of the unit may be configured to communicate with one or more of the other units via a transmission medium. For example, the units may include a wired interface configured to receive or send signals to one or more of the other units via a wired transmission medium. Additionally or alternatively, the unit may include a wireless interface that may include a receiver, transmitter, or transceiver (such as a radio frequency (RF) transceiver) configured to receive signals on a wireless transmission medium or send signals to one or more of the other units, or both.

[0135] In some aspects, the CU may be in charge of one or more higher-layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by the CU. The CU may be configured to handle user plane functions (e.g., central unit-user plane (CU-UP)), control plane functions (e.g., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, the CU may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, the CU may be implemented to communicate with the DU for network control and signal notification.

[0136] The DU may correspond to a logical unit that includes one or more network entity functions to control the operation of one or more RUs. In some aspects, the DU may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation, etc.) at least in part according to functional splits such as those defined by the 3rd Generation Partnership Project (3GPP). In some aspects, the DU may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by the DU or with control functions hosted by the CU.

[0137] Lower layer functionality may be implemented by one or more RUs. In some deployments, a RU controlled by a DU may correspond to a logical node that hosts RF processing functions or low PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.) or both based at least in part on functional splitting such as lower layer functional splitting. In this architecture, the RU may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU may be controlled by the corresponding DU. In some scenarios, this configuration may enable the DU and CU to be implemented in a cloud-based RAN architecture such as a vRAN architecture.

[0138] The SMO framework may be configured to support RAN deployment and pre-configuration of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via operation and maintenance interfaces (such as O1 interfaces). For virtualized network elements, the SMO framework may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud)) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU, DU, RU, and near-RT RIC. In some specific implementations, the SMO framework may communicate with hardware aspects of the 4G RAN, such as an open eNB (O-eNB), via the O1 interface. In addition, in some specific implementations, the SMO framework may communicate directly with one or more RUs via the O1 interface. The SMO framework may also include a non-RT RIC configured to support the functionality of the SMO framework.

[0139] The non-RT RIC may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC. The non-RT RIC may be coupled to or communicate with the near-RT RIC (such as via an A1 interface). The near-RT RIC may be configured to include logic functions that enable near real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs, one or more DUs, or both, and the O-eNB with the near-RT RIC.

[0140] In some implementations, in order to generate an AI / ML model to be deployed in a near-RT RIC, a non-RT RIC may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC and may be received from a non-network data source or from a network function at the SMO framework or the non-RT RIC. In some examples, the non-RT RIC or near-RT RIC may be configured to tune RAN behavior or performance. For example, the non-RT RIC may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0141] As mentioned above, FIG. 3A to FIG. 3D Describes a method for use in a wireless communication network such as Figure 1 Various example aspects of data structures of a wireless communication network 100).

[0142] In various aspects, the 5G frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within the subcarrier set are dedicated to either DL or UL. The 5G frame structure may also be time division duplex (TDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within the subcarrier set are dedicated to both DL and UL. Figure 3A and Figure 3C In the example provided, the 5G frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly DL) and subframe 3 is configured with slot format 34 (mostly UL), where D is DL, U is UL, and X is for flexible use between DL / UL. Although subframes 3 and 4 are shown as having slot formats 34 and 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are DL and UL, respectively. Other slot formats 2-61 include a mixture of DL, UL and flexible symbols. The slot format is configured for the UE by a received slot format indicator (SFI) (dynamically configured by DL control information (DCI) or semi-statically / statically configured by radio resource control (RRC) signaling). Note that the following description also applies to a 5G frame structure for TDD.

[0143] Other wireless communication technologies may have different frame structures and / or different channels. A frame (10 ms) may be divided into 10 equally sized subframes (1 ms). Each subframe may include one or more time slots. A subframe may also include a mini-time slot, which may include 7, 4, or 2 symbols. In some examples, each time slot may include 7 or 14 symbols, depending on the time slot configuration.

[0144] For example, for slot configuration 0, each slot may include 14 symbols, while for slot configuration 1, each slot may include 7 symbols. The symbols on the DL may be cyclic prefix (CP) OFDM (CP-OFDM) symbols. The symbols on the UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also known as single carrier frequency division multiple access (SC-FDMA) symbols) (for power-limited scenarios; limited to single stream transmission).

[0145] The number of slots within a subframe is based on the slot configuration and parameter set. For slot configuration 0, different parameter sets (μ) 0 to 5 allow 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different parameter sets 0 to 2 allow 2, 4, and 8 slots per subframe, respectively. Therefore, for slot configuration 0 and parameter set μ, there are 14 symbols / slot and 2μ slots / subframe. The subcarrier spacing and symbol length / duration are a function of the parameter set. The subcarrier spacing can be equal to 2 μ × 15kHz, where μ is parameter set 0 to 5. Thus, parameter set μ=0 has a subcarrier spacing of 15kHz, and parameter set μ=5 has a subcarrier spacing of 480kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIG. 3A to FIG. 3D An example is provided for slot configuration 0 with 14 symbols per slot and parameter set μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs.

[0146] A resource grid may be used to represent a frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending over 12 consecutive subcarriers. The resource grid is divided into a plurality of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0147] like Figure 3A As shown, some REs carry data for UEs (e.g. Figure 1 and Figure 2 The RS may include a demodulation RS (DM-RS) (denoted as Rx for one particular configuration, where 100x is the port number, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0148] Figure 3BExamples of various DL channels within a subframe of a frame are illustrated.The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs), each CCE comprising nine RE Groups (REGs), each REG comprising four consecutive REs in an OFDM symbol.

[0149] The primary synchronization signal (PSS) may be in symbol 2 of a particular subframe of a frame. The PSS is transmitted by a UE (e.g., Figure 1 and Figure 2 104) is used to determine subframe / symbol timing and physical layer identity.

[0150] The Secondary Synchronization Signal (SSS) may be in symbol 4 of a specific subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing.

[0151] Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block. The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information (such as system information blocks (SIBs)) that is not sent through the PBCH, and paging messages.

[0152] like Figure 3C As shown in , some REs carry DM-RS for channel estimation at the base station (indicated as R for one specific configuration, but other DM-RS configurations are possible). The UE may send DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS may be sent in the first or first two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS may be sent in different configurations. The UE may send a sounding reference signal (SRS). The SRS may be sent in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the comb structures in the comb structure. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0153] Figure 3DExamples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), and HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0154] Additional considerations

[0155] The foregoing description provides an example of a data collection report for an NTN network. The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. The examples discussed herein do not limit the scope, applicability, or aspects set forth in the claims. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. For example, without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Various examples may omit, replace, or add various processes or components as appropriate. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, the features described with respect to some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice a method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionality, or structures and functionality other than the various aspects of the present disclosure set forth herein or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0156] The techniques described herein can be used for various wireless communication technologies, such as 5G (e.g., 5GNR), 3GPP Long Term Evolution (LTE), Advanced LTE (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, and other radio technologies. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95, and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA networks may implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, and the like. UTRA and E-UTRA are parts of Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). NR is an emerging wireless communication technology under development.

[0157] The various illustrative logic blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed using a general purpose processor, a DSP, an ASIC, a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. Although a general purpose processor may be a microprocessor, in an alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC), or any other such configuration.

[0158] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. Depending on the specific application and overall design constraints of the processing system, the bus may include any number of interconnecting buses and bridges. The bus may link various circuits together, including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In user equipment (see Figure 1 ), a user interface (e.g., a keypad, display, mouse, joystick, touch screen, biometric sensor, proximity sensor, light emitting element, etc.) may also be connected to the bus. The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be described further. The processor may be implemented using one or more general purpose processors and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize how best to implement the described functionality of the processing system depending on the specific application and the overall design constraints imposed on the entire system.

[0159] If implemented in software, the function may be stored as one or more instructions or codes on a computer-readable medium or sent via a computer-readable medium. Software should be broadly interpreted as meaning instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or other. Computer-readable media include both computer storage media and communication media, including any media that facilitates the transfer of a computer program from one place to another. The processor may be responsible for managing the bus and general processing, including executing software modules stored on a machine-readable storage medium. A computer-readable storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative, the storage medium may be integral with the processor. By way of example, a machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium having instructions stored thereon that is separated from a wireless node, all of which may be accessed by a processor through a bus interface. Alternatively or in addition thereto, a machine-readable medium or any part thereof may be integrated into a processor, such as in the case of having a cache and / or a general register stack. By way of example, examples of machine-readable storage media may include RAM (random access memory), flash memory, ROM (read only memory), PROM (programmable read only memory), EPROM (erasable programmable read only memory), EEPROM (electrically erasable programmable read only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media, or any combination thereof. The machine-readable medium may be embodied in a computer program product.

[0160] A software module may include a single instruction, perhaps multiple instructions, and may be distributed over several different code segments, between different programs, and across multiple storage media. A computer-readable medium may include multiple software modules. A software module includes instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. A software module may include a sending module and a receiving module. Each software module may reside in a single storage device or may be distributed across multiple storage devices. By way of example, when a triggering event occurs, a software module may be loaded from a hard drive into a RAM. During the execution of a software module, a processor may load some of the instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register stack for execution by the processor. When the functionality of a software module is mentioned below, it will be understood that such functionality is implemented by the processor when executing instructions from the software module.

[0161] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items (including single members). For example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0162] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Additionally, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. Additionally, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0163] The method disclosed herein includes one or more steps or actions for implementing the method. The steps and / or actions of the method can be interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions can be modified without departing from the scope of the claims. In addition, the various operations of the method described above can be performed by any suitable component capable of performing the corresponding function. The component may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors. In general, in the case of the operations illustrated in the accompanying drawings, these operations may have corresponding corresponding components with similar numbers plus functional components.

[0164] The following claims are not intended to be limited to the various aspects shown herein, but should be given the full scope consistent with the language of the claims. Within the claims, unless explicitly stated, reference to an element in the singular form is not intended to mean "one and only one", but "one or more". Unless otherwise specified, the term "some" refers to one or more. No claim element should be interpreted according to the provisions of 35 U.S.C. § 112 (f), unless the phrase "member for..." is used to expressly record the element, or in the case of a method claim, the phrase "step for..." is used to record the element. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will be known later to a person of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recorded in the claims.

Claims

1. A method for wireless communication by a user equipment (UE), the method comprising: receiving signaling indicating one or more values ​​for a scheduling offset between a downlink time slot for receiving downlink control information (DCI) and an uplink time slot for transmitting a physical uplink shared channel (PUSCH) scheduled by the DCI; determining an additional offset to be used with the scheduling offset value to determine PUSCH transmission timing; determining a power control adjustment for sounding reference signal (SRS) transmission based on a transmit power control (TPC) command received in a time interval determined by one of the scheduling offset values ​​and the additional offset; and The SRS is transmitted in the SRS transmission opportunity according to the determined power control adjustment. 2 . The method of claim 1 , wherein the time interval starts a first number of symbols before a previous SRS transmission opportunity and ends a second number of symbols before the SRS transmission opportunity. 3 . The method of claim 1 , wherein the power control adjustment is determined based on one or more TPC commands accumulated in the time interval. The method according to claim 1 , wherein the SRS transmission is semi-persistent or periodic.

5. The method of claim 1 , wherein the additional offset is determined based on at least one of: A configured cell-specific additional offset value; or UE specific differential offset value.

6. The method of claim 5, wherein the additional offset is determined by subtracting the UE-specific difference offset value from the configured cell-specific additional offset value.

7. The method of claim 5, further comprising receiving a medium access control (MAC) control element (CE) indicating the UE-specific differential offset value.

8. The method according to claim 5, wherein the time interval is determined based on a parameter indicating the number of symbols, and is determined based on the number of symbols per time slot, a minimum value of the scheduling offset value, and the additional offset value.

9. The method according to claim 8, wherein the parameter is determined as: The product of the number of symbols per time slot and the sum of: The minimum value of the scheduling offset value; and 2μKoffset, where Koffset is the additional offset value and μ is the subcarrier spacing index corresponding to the subcarrier spacing of 2μ×15 kHz.

10. The method of claim 8, wherein the parameter is determined as: The product of the number of symbols per time slot and the sum of: The minimum value of the scheduling offset value; and 2 μ K offset , where K offset =K cell，offset -K UE，offset , where K cell，offset is the configured cell-specific additional offset value, and K UE,offset is the UE-specific difference offset value, and μ is the value corresponding to 2 μ × Subcarrier spacing index for subcarrier spacing of 15 kHz.

11. The method according to claim 10, wherein: In the case where no cell-specific additional offset value is configured, it is assumed that K cell，offset is 0; and In the case where no UE-specific difference offset value is signaled, it is assumed that K UE,offset is 0, and μ is the subcarrier spacing index corresponding to the subcarrier spacing of 2μ×15 kHz.

12. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: a memory including computer executable instructions; and one or more processors configured to execute the computer-executable instructions and cause the apparatus to: receiving signaling that configures the UE with one or more values ​​for a scheduling offset between a downlink time slot for receiving downlink control information (DCI) and an uplink time slot for transmitting a physical uplink shared channel (PUSCH) scheduled by the DCI; determining an additional offset to be used with the scheduling offset value to determine PUSCH transmission timing; determining a power control adjustment for sounding reference signal (SRS) transmission based on a transmit power control (TPC) command received in a time interval determined by one of the scheduling offset values ​​and the additional offset; and The SRS is transmitted in the SRS transmission opportunity according to the determined power control adjustment. 13 . The apparatus of claim 12 , wherein the time interval starts a first number of symbols before a previous SRS transmission opportunity and ends a second number of symbols before the SRS transmission opportunity.

14. The apparatus of claim 12, wherein the power control adjustment is determined based on one or more TPC commands accumulated in the time interval. The apparatus of claim 12 , wherein the SRS transmission is semi-persistent or periodic.

16. The apparatus of claim 12, wherein the additional offset is determined based on at least one of: A configured cell-specific additional offset value; or UE specific differential offset value.

17. The apparatus of claim 16, wherein the additional offset is determined by subtracting the UE-specific difference offset value from the configured cell-specific additional offset value.

18. The apparatus of claim 16, wherein the one or more processors are further configured to execute the computer executable instructions and cause the apparatus to: A medium access control (MAC) control element (CE) is received indicating the UE-specific differential offset value.

19. The apparatus according to claim 16, wherein the time interval is determined based on a parameter indicating the number of symbols, and is determined based on the number of symbols per time slot, a minimum value of the scheduling offset value, and the additional offset value.

20. The apparatus of claim 19, wherein the parameter is determined as: The product of the number of symbols per time slot and the sum of: The minimum value of the scheduling offset value; and 2μKoffset, where Koffset is the additional offset value and μ is the subcarrier spacing index corresponding to the subcarrier spacing of 2μ×15 kHz.

21. The apparatus of claim 19, wherein the parameter is determined as: The product of the number of symbols per time slot and the sum of: The minimum value of the scheduling offset value; and 2 μ K offset , where K offset =K cell，offset -K UE，offset , where K cell，offset is the configured cell-specific additional offset value, and K UE,offset is the UE-specific difference offset value, and μ is the value corresponding to 2 μ × Subcarrier spacing index for subcarrier spacing of 15 kHz.

22. The apparatus of claim 21, wherein: In the case where no cell-specific additional offset value is configured, it is assumed that K cell,offset is 0; and In the case where no UE-specific difference offset value is signaled, it is assumed that K UE,offset is 0, μ corresponds to 2 μ × Subcarrier spacing index for subcarrier spacing of 15 kHz.

23. A computer readable medium storing instructions for: receiving signaling indicating one or more values ​​for a scheduling offset between a downlink time slot for receiving downlink control information (DCI) and an uplink time slot for transmitting a physical uplink shared channel (PUSCH) scheduled by the DCI; determining an additional offset to be used with the scheduling offset value to determine PUSCH transmission timing; determining a power control adjustment for sounding reference signal (SRS) transmission based on a transmit power control (TPC) command received in a time interval determined by one of the scheduling offset values ​​and the additional offset; and The SRS is transmitted in the SRS transmission opportunity according to the determined power control adjustment.

24. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: means for receiving signaling indicating one or more values ​​for a scheduling offset between a downlink time slot for receiving downlink control information (DCI) and an uplink time slot for transmitting a physical uplink shared channel (PUSCH) scheduled by the DCI; means for determining an additional offset to be used with the scheduling offset value to determine PUSCH transmission timing; means for determining a power control adjustment for sounding reference signal (SRS) transmission based on a transmit power control (TPC) command received in a time interval determined by one of the scheduling offset values ​​and the additional offset; and Means for transmitting an SRS in an SRS transmission opportunity based on the determined power control adjustment.

25. The apparatus of claim 24, wherein the time interval starts a first number of symbols before a previous SRS transmission opportunity and ends a second number of symbols before the SRS transmission opportunity.

26. The apparatus of claim 24, wherein the power control adjustment is determined based on one or more TPC commands accumulated in the time interval.

27. The apparatus of claim 24, wherein the SRS transmission is semi-persistent or periodic.

28. The apparatus of claim 24, wherein the additional offset is determined based on at least one of: A configured cell-specific additional offset value; or UE specific differential offset value.

29. The apparatus of claim 28, wherein the additional offset is determined by subtracting the UE-specific difference offset value from the configured cell-specific additional offset value.

30. The apparatus of claim 28, further comprising means for receiving a medium access control (MAC) control element (CE) indicating the UE-specific differential offset value.

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