WO2021120139A1

WO2021120139A1 - Frequency diversity in uplink transmissions with frequency hopping

Info

Publication number: WO2021120139A1
Application number: PCT/CN2019/126845
Authority: WO
Inventors: Jing Dai; Chao Wei; Hao Xu; Yi Huang; Changlong Xu
Original assignee: Qualcomm Incorporated
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-06-24

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a mapping of encoded bits for a communication to one or two frequency hop locations in a slot. The encoded bits for the communication may be cyclic shifted. The UE may transmit the communication according to the mapping of the encoded bits to the one or two frequency hop locations. Numerous other aspects are provided.

Description

FREQUENCY DIVERSITY IN UPLINK TRANSMISSIONS WITH FREQUENCY HOPPING

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for frequency diversity in uplink transmissions with frequency hopping.

BACKGROUND

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and/or the like) . Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) . LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) .

A wireless communication network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs) . A user equipment (UE) may communicate with a base station (BS) via the downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an access point (AP) , a radio head, a transmit receive point (TRP) , a New Radio (NR) BS, a 5G Node B, and/or the like.

The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate on a municipal, national, regional, and even global level. New Radio (NR) , which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP) . NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) , using CP-OFDM and/or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink (UL) , as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to increase, there exists a need for further improvements in LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ these technologies.

SUMMARY

In some aspects, a method of wireless communication, performed by a user equipment (UE) , may include determining a mapping of encoded bits for a communication to one or two frequency hop locations in a slot, wherein the encoded bits for the communication are cyclic shifted; and transmitting the communication according to the mapping of the encoded bits to the one or two frequency hop locations.

In some aspects, a method of wireless communication, performed by a UE, may include determining two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots; and transmitting the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets, wherein the more than two frequency hop locations are different.

In some aspects, a UE for wireless communication may include memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine a mapping of encoded bits for a communication to one or two frequency hop locations in a slot, wherein the encoded bits for the communication are cyclic shifted; and transmit the communication according to the mapping of the encoded bits to the one or two frequency hop locations.

In some aspects, a UE for wireless communication may include memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots; and transmit the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets, wherein the more than two frequency hop locations are different.

In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: determine a mapping of encoded bits for a communication to one or two frequency hop locations in a slot, wherein the encoded bits for the communication are cyclic shifted; and transmit the communication according to the mapping of the encoded bits to the one or two frequency hop locations.

In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: determine two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots; and transmit the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets, wherein the more than two frequency hop locations are different.

In some aspects, an apparatus for wireless communication may include means for determining a mapping of encoded bits for a communication to one or two frequency hop locations in a slot, wherein the encoded bits for the communication are cyclic shifted; and means for transmitting the communication according to the mapping of the encoded bits to the one or two frequency hop locations.

In some aspects, an apparatus for wireless communication may include means for determining two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots; and means for transmitting the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets, wherein the more than two frequency hop locations are different.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the accompanying drawings and specification.

The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. Characteristics of the concepts disclosed herein, both their organization and method of operation, together with associated advantages will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purposes of illustration and description, and not as a definition of the limits of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can be understood in detail, a more particular description, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a block diagram conceptually illustrating an example of a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 2 is a block diagram conceptually illustrating an example of a base station in communication with a UE in a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 3A is a block diagram conceptually illustrating an example of a frame structure in a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 3B is a block diagram conceptually illustrating an example synchronization communication hierarchy in a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 4 is a block diagram conceptually illustrating an example slot format with a normal cyclic prefix, in accordance with various aspects of the present disclosure.

Figs. 5 and 6 are diagrams illustrating examples of frequency diversity in uplink transmissions with frequency hopping, in accordance with various aspects of the present disclosure.

Figs. 7 and 8 are diagrams illustrating example processes performed, for example, by a UE, in accordance with various aspects of the present disclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein one skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method which is practiced using other structure, functionality, or structure and functionality in addition to or other than the various aspects of the 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 a claim.

Several aspects of telecommunication systems will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, and/or the like (collectively referred to as “elements” ) . These elements may be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

It should be noted that while aspects may be described herein using terminology commonly associated with 3G and/or 4G wireless technologies, aspects of the present disclosure can be applied in other generation-based communication systems, such as 5G and later, including NR technologies.

Fig. 1 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include a number of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with user equipment (UEs) and may also be referred to as a base station, a NR BS, a Node B, a gNB, a 5G node B (NB) , an access point, a transmit receive point (TRP) , and/or the like. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to a coverage area of a BS and/or a BS subsystem serving this coverage area, depending on the context in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having association with the femto cell (e.g., UEs in a closed subscriber group (CSG) ) . 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 or a home BS. In the example shown in Fig. 1, a BS 110a may be a macro BS for a macro cell 102a, a BS 110b may be a pico BS for a pico cell 102b, and a BS 110c may be a femto BS for a femto cell 102c. A BS may support one or multiple (e.g., three) cells. The terms “eNB” , “base station” , “NR BS” , “gNB” , “TRP” , “AP” , “node B” , “5G NB” , and “cell” may be used interchangeably herein.

In some aspects, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS. In some aspects, the BSs may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and/or the like using any suitable transport network.

Wireless network 100 may also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS) . A relay station may also be a UE that can relay transmissions for other UEs. In the example shown in Fig. 1, a relay station 110d may communicate with macro BS 110a and a UE 120d in order to facilitate communication between BS 110a and UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, and/or the like.

Wireless network 100 may be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and/or the like. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100. For example, macro BSs may have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 Watts) .

A network controller 130 may couple to a set of BSs and may provide coordination and control for these BSs. Network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with one another, e.g., directly or indirectly via a wireless or wireline backhaul.

UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, and/or the like. A UE may be a cellular phone (e.g., a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart ring, smart bracelet) ) , an entertainment device (e.g., a music or video device, or a satellite radio) , a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.

Some UEs may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, and/or the like, that may communicate with a base station, another device (e.g., remote device) , or some other entity. A wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband internet of things) devices. Some UEs may be considered a Customer Premises Equipment (CPE) . UE 120 may be included inside a housing that houses components of UE 120, such as processor components, memory components, and/or the like.

In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies. A RAT may also be referred to as a radio technology, an air interface, and/or the like. A frequency may also be referred to as a carrier, a frequency channel, and/or the like. Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using a base station 110 as an intermediary to communicate with one another) . For example, the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, and/or the like) , a mesh network, and/or the like. In this case, the UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the base station 110.

As indicated above, Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.

Fig. 2 shows a block diagram of a design 200 of base station 110 and UE 120, which may be one of the base stations and one of the UEs in Fig. 1. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T ≥ 1 and R ≥ 1.

At base station 110, a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS (s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and/or the like) and control information (e.g., CQI requests, grants, upper layer signaling, and/or the like) and provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS) ) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS) ) . A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in more detail below, the synchronization signals can be generated with location encoding to convey additional information.

At UE 120, antennas 252a through 252r may receive the downlink signals from base station 110 and/or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM and/or the like) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller/processor 280. A channel processor may determine reference signal received power (RSRP) , received signal strength indicator (RSSI) , reference signal received quality (RSRQ) , channel quality indicator (CQI) , and/or the like. In some aspects, one or more components of UE 120 may be included in a housing.

On the uplink, at UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) from controller/processor 280. Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, and/or the like) , and transmitted to base station 110. At base station 110, the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller/processor 240. Base station 110 may include communication unit 244 and communicate to network controller 130 via communication unit 244. Network controller 130 may include communication unit 294, controller/processor 290, and memory 292.

Controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform one or more techniques associated with frequency diversity in uplink transmissions with frequency hopping, as described in more detail elsewhere herein. For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform or direct operations of, for example, process 700 of Fig. 7, process 800 of Fig. 8, and/or other processes as described herein.

Memories

242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and/or memory 282 may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of the base station 110 and/or the UE 120, may perform or direct operations of, for example, process 700 of Fig. 7, process 800 of Fig. 8, and/or other processes as described herein. A scheduler 246 may schedule UEs for data transmission on the downlink and/or uplink.

In some aspects, UE 120 may include means for determining a mapping of encoded bits for a communication to one or two frequency hop locations in a slot, means for transmitting the communication according to the mapping of the encoded bits to the one or two frequency hop locations, means for determining two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots, means for transmitting the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets, and/or the like. In some aspects, such means may include one or more components of UE 120 described in connection with Fig. 2, such as controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and/or the like.

As indicated above, Fig. 2 is provided as an example. Other examples may differ from what is described with regard to Fig. 2.

Fig. 3A shows an example frame structure 300 for frequency division duplexing (FDD) in a telecommunications system (e.g., NR) . The transmission timeline for each of the downlink and uplink may be partitioned into units of radio frames (sometimes referred to as frames) . Each radio frame may have a predetermined duration (e.g., 10 milliseconds (ms) ) and may be partitioned into a set of Z (Z ≥ 1) subframes (e.g., with indices of 0 through Z-1) . Each subframe may have a predetermined duration (e.g., 1 ms) and may include a set of slots (e.g., 2 ^m slots per subframe are shown in Fig. 3A, where m is a numerology used for a transmission, such as 0, 1, 2, 3, 4, and/or the like) . Each slot may include a set of L symbol periods. For example, each slot may include fourteen symbol periods (e.g., as shown in Fig. 3A) , seven symbol periods, or another number of symbol periods. In a case where the subframe includes two slots (e.g., when m = 1) , the subframe may include 2L symbol periods, where the 2L symbol periods in each subframe may be assigned indices of 0 through 2L-1. In some aspects, a scheduling unit for the FDD may be frame-based, subframe-based, slot-based, symbol-based, and/or the like.

While some techniques are described herein in connection with frames, subframes, slots, and/or the like, these techniques may equally apply to other types of wireless communication structures, which may be referred to using terms other than “frame, ” “subframe, ” “slot, ” and/or the like in 5G NR. In some aspects, a wireless communication structure may refer to a periodic time-bounded communication unit defined by a wireless communication standard and/or protocol. Additionally, or alternatively, different configurations of wireless communication structures than those shown in Fig. 3A may be used.

In certain telecommunications (e.g., NR) , a base station may transmit synchronization signals. For example, a base station may transmit a primary synchronization signal (PSS) , a secondary synchronization signal (SSS) , and/or the like, on the downlink for each cell supported by the base station. The PSS and SSS may be used by UEs for cell search and acquisition. For example, the PSS may be used by UEs to determine symbol timing, and the SSS may be used by UEs to determine a physical cell identifier, associated with the base station, and frame timing. The base station may also transmit a physical broadcast channel (PBCH) . The PBCH may carry some system information, such as system information that supports initial access by UEs.

In some aspects, the base station may transmit the PSS, the SSS, and/or the PBCH in accordance with a synchronization communication hierarchy (e.g., a synchronization signal (SS) hierarchy) including multiple synchronization communications (e.g., SS blocks) , as described below in connection with Fig. 3B.

Fig. 3B is a block diagram conceptually illustrating an example SS hierarchy, which is an example of a synchronization communication hierarchy. As shown in Fig. 3B, the SS hierarchy may include an SS burst set, which may include a plurality of SS bursts (identified as SS burst 0 through SS burst B-1, where B is a maximum number of repetitions of the SS burst that may be transmitted by the base station) . As further shown, each SS burst may include one or more SS blocks (identified as SS block 0 through SS block (b _{max_SS}-1) , where b _{max_SS}-1 is a maximum number of SS blocks that can be carried by an SS burst) . In some aspects, different SS blocks may be beam-formed differently. An SS burst set may be periodically transmitted by a wireless node, such as every X milliseconds, as shown in Fig. 3B. In some aspects, an SS burst set may have a fixed or dynamic length, shown as Y milliseconds in Fig. 3B.

The SS burst set shown in Fig. 3B is an example of a synchronization communication set, and other synchronization communication sets may be used in connection with the techniques described herein. Furthermore, the SS block shown in Fig. 3B is an example of a synchronization communication, and other synchronization communications may be used in connection with the techniques described herein.

In some aspects, an SS block includes resources that carry the PSS, the SSS, the PBCH, and/or other synchronization signals (e.g., a tertiary synchronization signal (TSS) ) and/or synchronization channels. In some aspects, multiple SS blocks are included in an SS burst, and the PSS, the SSS, and/or the PBCH may be the same across each SS block of the SS burst. In some aspects, a single SS block may be included in an SS burst. In some aspects, the SS block may be at least four symbol periods in length, where each symbol carries one or more of the PSS (e.g., occupying one symbol) , the SSS (e.g., occupying one symbol) , and/or the PBCH (e.g., occupying two symbols) .

In some aspects, the symbols of an SS block are consecutive, as shown in Fig. 3B. In some aspects, the symbols of an SS block are non-consecutive. Similarly, in some aspects, one or more SS blocks of the SS burst may be transmitted in consecutive radio resources (e.g., consecutive symbol periods) during one or more slots. Additionally, or alternatively, one or more SS blocks of the SS burst may be transmitted in non-consecutive radio resources.

In some aspects, the SS bursts may have a burst period, whereby the SS blocks of the SS burst are transmitted by the base station according to the burst period. In other words, the SS blocks may be repeated during each SS burst. In some aspects, the SS burst set may have a burst set periodicity, whereby the SS bursts of the SS burst set are transmitted by the base station according to the fixed burst set periodicity. In other words, the SS bursts may be repeated during each SS burst set.

The base station may transmit system information, such as system information blocks (SIBs) on a physical downlink shared channel (PDSCH) in certain slots. The base station may transmit control information/data on a physical downlink control channel (PDCCH) in C symbol periods of a slot, where B may be configurable for each slot. The base station may transmit traffic data and/or other data on the PDSCH in the remaining symbol periods of each slot.

As indicated above, Figs. 3A and 3B are provided as examples. Other examples may differ from what is described with regard to Figs. 3A and 3B.

Fig. 4 shows an example slot format 410 with a normal cyclic prefix. The available time frequency resources may be partitioned into resource blocks. Each resource block may cover a set of subcarriers (e.g., 12 subcarriers) in one slot and may include a number of resource elements. Each resource element may cover one subcarrier in one symbol period (e.g., in time) and may be used to send one modulation symbol, which may be a real or complex value.

An interlace structure may be used for each of the downlink and uplink for FDD in certain telecommunications systems (e.g., NR) . For example, Q interlaces with indices of 0 through Q -1 may be defined, where Q may be equal to 4, 6, 8, 10, or some other value. Each interlace may include slots that are spaced apart by Q frames. In particular, interlace q may include slots q, q + Q, q + 2Q, etc., where q ∈ {0, ..., Q -1} .

A UE may be located within the coverage of multiple BSs. One of these BSs may be selected to serve the UE. The serving BS may be selected based at least in part on various criteria such as received signal strength, received signal quality, path loss, and/or the like. Received signal quality may be quantified by a signal-to-noise-and-interference ratio (SNIR) , or a reference signal received quality (RSRQ) , or some other metric. The UE may operate in a dominant interference scenario in which the UE may observe high interference from one or more interfering BSs.

While aspects of the examples described herein may be associated with NR or 5G technologies, aspects of the present disclosure may be applicable with other wireless communication systems. New Radio (NR) may refer to radios configured to operate according to a new air interface (e.g., other than Orthogonal Frequency Divisional Multiple Access (OFDMA) -based air interfaces) or fixed transport layer (e.g., other than Internet Protocol (IP) ) . In aspects, NR may utilize OFDM with a CP (herein referred to as cyclic prefix OFDM or CP-OFDM) and/or SC-FDM on the uplink, may utilize CP-OFDM on the downlink and include support for half-duplex operation using time division duplexing (TDD) . In aspects, NR may, for example, utilize OFDM with a CP (herein referred to as CP-OFDM) and/or discrete Fourier transform spread orthogonal frequency-division multiplexing (DFT-s-OFDM) on the uplink, may utilize CP-OFDM on the downlink and include support for half-duplex operation using TDD. NR may include Enhanced Mobile Broadband (eMBB) service targeting wide bandwidth (e.g., 80 megahertz (MHz) and beyond) , millimeter wave (mmW) targeting high carrier frequency (e.g., 60 gigahertz (GHz) ) , massive MTC (mMTC) targeting non-backward compatible MTC techniques, and/or mission critical targeting ultra reliable low latency communications (URLLC) service.

In some aspects, a single component carrier bandwidth of 100 MHz may be supported. NR resource blocks may span 12 sub-carriers with a sub-carrier bandwidth of 60 or 120 kilohertz (kHz) over a 0.1 millisecond (ms) duration. Each radio frame may include 40 slots and may have a length of 10 ms. Consequently, each slot may have a length of 0.25 ms. Each slot may indicate a link direction (e.g., DL or UL) for data transmission and the link direction for each slot may be dynamically switched. Each slot may include DL/UL data as well as DL/UL control data.

Beamforming may be supported and beam direction may be dynamically configured. MIMO transmissions with precoding may also be supported. MIMO configurations in the DL may support up to 8 transmit antennas with multi-layer DL transmissions up to 8 streams and up to 2 streams per UE. Multi-layer transmissions with up to 2 streams per UE may be supported. Aggregation of multiple cells may be supported with up to 8 serving cells. Alternatively, NR may support a different air interface, other than an OFDM-based interface. NR networks may include entities such as central units or distributed units.

As indicated above, Fig. 4 is provided as an example. Other examples may differ from what is described with regard to Fig. 4.

In some wireless communication systems, frequency hopping may be used to achieve frequency diversity in uplink transmissions. Such frequency hopping may be intra-slot, whereby a communication is transmitted in multiple frequency hop locations within a single slot, or inter-slot, whereby a communication is transmitted in multiple frequency hop locations across multiple slots. In some cases, multiple repetitions of a communication may be transmitted in multiple slots using either intra-slot or inter-slot frequency hopping.

However, use of frequency hopping for the repetitions may result in transmission of one or more portions (e.g., code blocks) of the communication in the same frequency hop locations across multiple slots, thereby failing to achieve diversity gains for those portions. In some cases, to resolve this, frequency hop locations may be “swapped” in successive slots. For example, according to a swapping technique, a first repetition of a communication may be transmitted sequentially in a first frequency hop location and a second frequency hop location in a first slot, and a second repetition of the communication may be transmitted sequentially in the second frequency hop location and the first frequency hop location in a second slot. However, communications of a UE using frequency hop location swapping may have an increased potential for collision with communications of other UEs (e.g., UEs communicating according to a legacy wireless communication system that does not use frequency hop location swapping) .

Some techniques and apparatuses described herein facilitate frequency hopping with improved frequency diversity, and with a reduced potential for collisions. In some aspects, encoded bits of successive repetitions of a communication may be mapped to frequency hop locations according to different cyclic shifts of the encoded bits. Additionally, or alternatively, a communication may be transmitted in frequency hop locations in multiple slots, and the frequency hop locations may be different in each of the multiple slots. In this way, diversity gains may be achieved for the communications, and a performance of the communications may be improved.

Fig. 5 is a diagram illustrating an example 500 of frequency diversity in uplink transmissions with frequency hopping, in accordance with various aspects of the present disclosure. As shown in Fig. 5, multiple repetitions 505 of an uplink communication may be transmitted in multiple slots 510 using frequency hopping. The uplink communication may include a transport block that includes a plurality (e.g., two or more) of code blocks. In some aspects, the uplink communication may be a physical uplink shared channel (PUSCH) communication. In such a case, the repetitions 505 may be different redundancy versions of the uplink communication. In some aspects, the uplink communication may be a physical uplink control channel (PUCCH) communication. In some aspects, a UE 120 may transmit, and a BS 110 may receive, the repetitions 505 of the uplink communication.

As shown in Fig. 5, in a first slot 510a, the UE 120 may transmit, and the BS 110 may receive, a first repetition 505a of the uplink communication. The UE 120 may transmit the first repetition 505a using frequency hopping. For example, as shown in Fig. 5, the UE 120 may transmit the first repetition 505a in a first frequency hop location 515a (e.g., a first time and frequency position) and a second frequency hop location 520a (e.g., a second time and frequency position that is different from the first time and frequency position in both time and frequency) in the first slot 510a (i.e., the UE 120 may transmit the first repetition 505a using intra-slot frequency hopping) .

The first repetition 505a of the uplink communication may be according to a mapping of encoded bits of the uplink communication to resource elements associated with the first frequency hop location 515a and the second frequency hop location 520a in the first slot 510a. In such a case, the encoded bits may not be cyclic shifted prior to being mapped to the resource elements. Accordingly, the UE 120 may determine the mapping of the encoded bits, which are not cyclic shifted, to the first frequency hop location 515a and the second frequency hop location 520a in the first slot 510a, and transmit the first repetition 505a according to the mapping.

As an example, as shown in Fig. 5, the first frequency hop location 515a and the second frequency hop location 520a may correspond to seven symbols, a first symbol of each of the first frequency hop location 515a and the second frequency hop location 520a may be used for a demodulation reference signal (DMRS) , and a remainder of the symbols may be used for the encoded bits. For example, a first code block (shown as code block 0) and a second code block (shown as code block 1) of the uplink communication may be represented by the encoded bits, and the encoded bits for the first code block may be mapped to resource elements in the first frequency hop location 515a and to resource elements in a portion of the second frequency hop location 520a. The encoded bits for the second code block may be mapped to resource elements in a portion of the second frequency hop location 520a. The encoded bits may be mapped to the resource elements of a symbol after the encoded bits have been mapped to all of the resource elements of a preceding symbol.

As shown in Fig. 5, in a second slot 510b, the UE 120 may transmit, and the BS 110 may receive, a second repetition 505b of the uplink communication. The UE 120 may also transmit the second repetition 505b using frequency hopping. For example, as shown in Fig. 5, the UE 120 may transmit the second repetition 505b in a first frequency hop location 515b and a second frequency hop location 520b in the second slot 510b (i.e., the UE 120 may transmit the second repetition 505b using intra-slot frequency hopping) . In some aspects, the first frequency hop location 515a and the second frequency hop location 520a in the first slot 510a, and the first frequency hop location 515b and the second frequency hop location 520b in the second slot 510b, may have the same frequency hopping pattern.

The second repetition 505b of the uplink communication may be according to a mapping of the encoded bits of the uplink communication to resource elements associated with the first frequency hop location 515b and the second frequency hop location 520b in the second slot 510b. In such a case, the encoded bits may be cyclic shifted prior to being mapped to the resource elements (e.g., the UE 120 may perform a cyclic shift of the encoded bits prior to mapping the encoded bits) . Accordingly, the UE 120 may determine the mapping of the encoded bits, which are cyclic shifted, to the first frequency hop location 515b and the second frequency hop location 520b in the second slot 510b, and transmit the second repetition 505b according to the mapping. In this way, the mapping for the first repetition 505a and the mapping for the second repetition 505b are different, thereby improving frequency diversity.

As an example, as shown in Fig. 5, the first frequency hop location 515b and the second frequency hop location 520b may correspond to seven symbols, as described above. Moreover, due to the cyclic shift, the encoded bits for the first code block of the uplink communication and the encoded bits for the second code block of the uplink communication may both be mapped to resource elements in portions of the first frequency hop location 515b and portions of the second frequency hop location 520b, thereby providing frequency diversity relative to the first repetition 505a.

In some aspects, the UE 120 may perform a cyclic shift of the encoded bits from a position in the encoded bits that is based at least in part on a length of the encoded bits. For example, the position may be based at least in part on a quantity of code blocks included in the uplink communication. As an example, if the uplink communication includes four code blocks, the position in the encoded bits may be associated with the second code block, the third code block, or the fourth code block.

In some aspects, the uplink communication includes a PUSCH that includes encoded bits of an uplink shared channel (UL-SCH) communication and encoded bits of uplink control information (UCI) . In such cases, the UE 120 may perform separate cyclic shifts of the encoded bits of the UL-SCH communication and the encoded bits of the UCI, and perform concatenation of the resultant cyclic shifted encoded bits. In some aspects, the UCI may include encoded bits of one or more of hybrid automatic repeat request (HARQ) feedback, part 1 channel state information (CSI) , or part 2 CSI, and the UE 120 may perform separate cyclic shifts of the encoded bits of the one or more of the HARQ feedback, part 1 CSI, or part 2 CSI.

In some aspects, the uplink communication includes a PUCCH that includes encoded bits of part 2 CSI and joint encoded bits of one or more of HARQ feedback, a scheduling request, or part 1 CSI. In such cases, the UE 120 may perform a cyclic shift of the joint encoded bits of the one or more of the HARQ feedback, the scheduling request, or the part 1 CSI. Additionally, or alternatively, the UE 120 may perform separate cyclic shifts of the encoded bits of the part 2 CSI and the joint encoded bits of the one or more of the HARQ feedback, the scheduling request, or the part 1 CSI, and perform concatenation of the resultant cyclic shifted encoded bits.

As shown in Fig. 5, in some aspects, in a third slot 510c, the UE 120 may transmit a third repetition 505c of the uplink communication with the encoded bits not cyclic shifted, and in a fourth slot 510d, the UE 120 may transmit a fourth repetition 505d of the uplink communication with the encoded bits cyclic shifted, and so forth. In other words, the encoded bits of the uplink communication may be cyclic shifted using a shifting period of two slots.

In some aspects, the encoded bits of the uplink communication may be cyclic shifted using other shifting patterns. For example, a shifting pattern may include multiple cyclic shifted repetitions of the uplink communication, where each cyclic shifted repetition has a cyclic shift from a different position in the encoded bits. As an example of a shifting pattern, the encoded bits of the first repetition 505a may not be cyclic shifted, the encoded bits of the second repetition 505b may be cyclic shifted from a first position, the encoded bits of the third repetition 505c may be cyclic shifted from a second position, and the encoded bits of the fourth repetition 505d may be cyclic shifted from a third position.

In some aspects, the repetitions 505 may be PUSCH repetitions across eight slots with a redundancy version period of four slots. In such cases, the four redundancy versions may be respectively transmitted in the first four slots without cyclic shifting, and the four redundancy versions may be respectively transmitted in the last four slots with cyclic shifting, as described above.

In some aspects, the UE 120 may transmit an uplink communication in a single slot (e.g., without repetition) using intra-slot frequency hopping. In such cases, the encoded bits of the uplink communication may be cyclic shifted, as described above in connection with the second repetition 505b. That is, in some aspects, the second repetition 505b may represent an uplink communication in a single slot that uses intra-slot frequency hopping.

In some aspects, the UE 120 may transmit repetitions of an uplink communication using inter-slot frequency hopping. For example, in the first slot 510a, the UE 120 may transmit a first repetition of the uplink communication in a single frequency hop location in the first slot 510a. The UE 120 may determine a mapping of the encoded bits, that are not cyclic shifted, of the uplink communication to the single frequency hop location, and transmit the first repetition according to the mapping. Continuing with the previous example, in the second slot 510b, the UE 120 may transmit a second repetition of the uplink communication in a single frequency hop location in the second slot 510b that has a different frequency position than the single frequency hop location in the first slot 510a. The UE 120 may determine a mapping of the encoded bits, that are cyclic shifted, of the uplink communication to the single frequency hop location, and transmit the second repetition according to the mapping, and so forth.

As indicated above, Fig. 5 is provided as an example. Other examples may differ from what is described with respect to Fig. 5.

Fig. 6 is a diagram illustrating an example 600 of frequency diversity in uplink transmissions with frequency hopping, in accordance with various aspects of the present disclosure. As shown in Fig. 6, multiple repetitions 605 of an uplink communication may be transmitted in multiple slots 610 using frequency hopping. The uplink communication may include a transport block that includes a plurality (e.g., two or more) of code blocks. In some aspects, the uplink communication may be a PUSCH communication. In such a case, the repetitions 605 may be different redundancy versions of the uplink communication. In some aspects, the uplink communication may be a PUCCH communication. In some aspects, a UE 120 may transmit, and a BS 110 may receive, the repetitions 605 of the uplink communication.

As shown in Fig. 6, in a first slot 610a, the UE 120 may transmit, and the BS 110 may receive, a first repetition 605a of the uplink communication. The UE 120 may transmit the first repetition 605a using frequency hopping. For example, as shown in Fig. 6, the UE 120 may transmit the first repetition 605a in a first frequency hop location 615a (e.g., a first time and frequency position) and a second frequency hop location 620a (e.g., a second time and frequency position that is different from the first time and frequency position in both time and frequency) in the first slot 610a (i.e., the UE 120 may transmit the first repetition 605a using intra-slot frequency hopping) .

As shown in Fig. 6, in a second slot 610b, the UE 120 may transmit, and the BS 110 may receive, a second repetition 605b of the uplink communication. The UE 120 may also transmit the second repetition 605b using frequency hopping. For example, as shown in Fig. 6, the UE 120 may transmit the second repetition 605b in a first frequency hop location 615b and a second frequency hop location 620b in the second slot 610b (i.e., the UE 120 may transmit the second repetition 605b using intra-slot frequency hopping) . In some aspects, the first frequency hop location 615a and the second frequency hop location 620a in the first slot 610a, and the first frequency hop location 615b and the second frequency hop location 620b in the second slot 610b, may have different frequency hopping patterns.

In some aspects, the encoded bits for the repetitions 605 of the uplink communication may be mapped to frequency hop locations 620 without cyclic shifting, as described above in connection with Fig. 5. In some aspects, the encoded bits for the repetitions 605 of the uplink communication may be mapped to frequency hop locations 620 with cyclic shifting according to a shifting period or a shifting pattern, as described above in connection with Fig. 5.

In some aspects, the UE 120 may determine frequency offsets for transmitting the first repetition 605a and the second repetition 605b. A frequency offset may represent a frequency difference between a baseline frequency and a lowest frequency of a frequency hop location, or a frequency difference between respective lowest frequencies of successive frequency hop locations.

The UE 120 may determine the frequency offsets based at least in part on an indication of the frequency offsets that is received by the UE 120 in downlink control information (DCI) . For example, the BS 110 may transmit, and the UE 120 may receive, DCI that provides the indication in a frequency domain resource allocation (FDRA) field of the DCI. In some aspects, one or more values of particular bits of the FDRA field may indicate frequency offsets for frequency hopping that uses more than two frequency hop locations (e.g., four frequency hop locations as described in connection with Fig. 6) , and one or more other values of particular bits of the FDRA field may indicate a frequency offset for frequency hopping that uses two frequency hop locations (e.g., as described in connection with Fig. 5) . In some aspects, the indication of the DCI may indicate two or more frequency offsets for frequency hopping that uses more than two frequency hop locations. That is, the indication of the DCI may indicate frequency offsets for two or more frequency hop locations.

The UE 120 may transmit the first repetition 605a and the second repetition 605b according to the frequency offsets. As shown in Fig. 6, the UE 120 may transmit a portion of the first repetition 605a in the first frequency hop location 615a in the first slot 610a using no frequency offset (e.g., a frequency offset of zero) from a baseline frequency. The UE 120 may transmit another portion of the first repetition 605a in the second frequency hop location 620a in the first slot 610a using a first frequency offset 625a from the baseline frequency (and from the first frequency hop location 615a) . In some aspects, the UE 120 may transmit the portion of the first repetition 605a in the first frequency hop location 615a using a frequency offset from the baseline frequency, and the frequency offset and the first frequency offset 625a may be different.

The UE 120 may transmit a portion of the second repetition 605b in the first frequency hop location 615b in the second slot 610b using a second frequency offset 625b from the baseline frequency. In some aspects, the first frequency offset 625a and the second frequency offset 625b may be different. The UE 120 may transmit another portion of the second repetition 605b in the second frequency hop location 620b in the second slot 610b using a third frequency offset 625c from the first frequency hop location 615b. In some aspects, the first frequency offset 625a and the third frequency offset 625c are opposite values. In this way, the DCI may indicate two frequency offsets, and the UE 120 may use the two frequency offsets to determine four different frequency hop locations. In some aspects, the third frequency offset 625c may be from the baseline frequency, and the second frequency offset 625b and the third frequency offset 625c may be different.

In this way, according to the frequency offsets, the first frequency hop location 615a in the first slot 610a, the second frequency hop location 620a in the first slot 610a, the first frequency hop location 615b in the second slot 610b, and the second frequency hop location 620b in the second slot 610b may have different frequency positions (e.g., may encompass different frequencies) , thereby providing frequency diversity. Accordingly, the UE 120 may transmit the uplink communication (e.g., the repetitions 605) in a bandwidth part of a bandwidth that is sufficient to permit four different frequency hop locations. For example, the bandwidth part may have a bandwidth that satisfies a threshold value, such as 50 physical resource blocks.

As shown in Fig. 6, in some aspects, in a third slot 610c, the UE 120 may transmit a third repetition 605c of the uplink communication in frequency hop locations corresponding to the first slot 610a, and in a fourth slot 610d, the UE 120 may transmit a fourth repetition 605d of the uplink communication in frequency hop locations corresponding to the second slot 610b, and so forth.

In some aspects, the UE 120 may transmit repetitions of an uplink communication using inter-slot frequency hopping. For example, the UE 120 may transmit a first repetition of the uplink communication in a single frequency hop location of the first slot 610a, a second repetition of the uplink communication in a single frequency hop location of the second slot 610b, a third repetition of the uplink communication in a single frequency hop location of the third slot 610c, and a fourth repetition of the uplink communication in a single frequency hop location of the fourth slot 610d. In such cases, the four single frequency hop locations may have different frequency positions (e.g., according to two or more frequency offsets) , in a manner similar to that described above for intra-slot frequency hopping.

As indicated above, Fig. 6 is provided as an example. Other examples may differ from what is described with respect to Fig. 6.

Fig. 7 is a diagram illustrating an example process 700 performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 700 is an example where the UE (e.g., UE 120, and/or the like) performs operations associated with frequency diversity in uplink transmissions with frequency hopping.

As shown in Fig. 7, in some aspects, process 700 may include determining a mapping of encoded bits for a communication to one or two frequency hop locations in a slot, wherein the encoded bits for the communication are cyclic shifted (block 710) . For example, the UE (e.g., using controller/processor 280, and/or the like) may determine a mapping of encoded bits for a communication to one or two frequency hop locations in a slot, as described above. In some aspects, the encoded bits for the communication are cyclic shifted.

As further shown in Fig. 7, in some aspects, process 700 may include transmitting the communication according to the mapping of the encoded bits to the one or two frequency hop locations (block 720) . For example, the UE (e.g., using controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, and/or the like) may transmit the communication according to the mapping of the encoded bits to the one or two frequency hop locations, as described above.

Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In a first aspect, the communication is a first repetition of the communication that is transmitted in a first slot, and process 700 includes transmitting a second repetition of the communication in a second slot, where the second repetition is according to a mapping of the encoded bits, that are not cyclic shifted, to one or two frequency hop locations in the second slot.

In a second aspect, alone or in combination with the first aspect, the first repetition is transmitted in two frequency hop locations in the first slot and the second repetition is transmitted in two frequency hop locations in the second slot. In a third aspect, alone or in combination with one or more of the first and second aspects, the two frequency hop locations in the first slot and the two frequency hop locations in the second slot have a same frequency hopping pattern.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process 700 includes transmitting a third repetition of the communication in a third slot, where the third repetition is according to a mapping of the encoded bits, that are cyclic shifted, to one or two frequency hop locations in the third slot, and where the encoded bits of the third repetition and the encoded bits of the first repetition are cyclic shifted from different positions in the encoded bits.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the encoded bits for the communication are cyclic shifted from a position in the encoded bits that is based at least in part on a length of one or more code blocks represented by the encoded bits.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the communication includes a PUSCH that includes encoded bits of a UL-SCH communication and encoded bits of UCI that includes one or more of HARQ feedback, part 1 CSI, or part 2 CSI. In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the communication includes a PUCCH communication that includes encoded bits of part 2 CSI and encoded bits of one or more of HARQ feedback, a scheduling request, or part 1 CSI. In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the encoded bits of the part 2 CSI and the encoded bits of the one or more of the HARQ feedback, the scheduling request, or the part 1 CSI are cyclic shifted separately. In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the encoded bits of the one or more of the HARQ feedback, the scheduling request, or the part 1 CSI are cyclic shifted jointly.

Although Fig. 7 shows example blocks of process 700, in some aspects, process 700 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 7. Additionally, or alternatively, two or more of the blocks of process 700 may be performed in parallel.

Fig. 8 is a diagram illustrating an example process 800 performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 800 is an example where the UE (e.g., UE 120, and/or the like) performs operations associated with frequency diversity in uplink transmissions with frequency hopping.

As shown in Fig. 8, in some aspects, process 800 may include determining two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots (block 810) . For example, the UE (e.g., using controller/processor 280, and/or the like) may determine two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots, as described above.

As further shown in Fig. 8, in some aspects, process 800 may include transmitting the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets, wherein the more than two frequency hop locations are different (block 820) . For example, the UE (e.g., using controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, and/or the like) may transmit the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets, as described above. In some aspects, the more than two frequency hop locations are different.

Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In a first aspect, a first repetition of the communication is transmitted in a first frequency hop location and a second frequency hop location in a first slot and a second repetition of the communication is transmitted in a third frequency hop location and a fourth frequency hop location in a second slot. In a second aspect, alone or in combination with the first aspect, a frequency offset from the first frequency hop location to the second frequency hop location is opposite to a frequency offset from the third frequency hop location to the fourth frequency hop location.

In a third aspect, alone or in combination with one or more of the first and second aspects, a first repetition of the communication is transmitted in a single frequency hop location of a first slot, a second repetition of the communication is transmitted in a single frequency hop location of a second slot, a third repetition of the communication is transmitted in a single frequency hop location of a third slot, and a fourth repetition of the communication is transmitted in a single frequency hop location of a fourth slot.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, the two or more frequency offsets are determined based at least in part on an indication of the two more frequency offsets received in DCI.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the communication is transmitted in a bandwidth part of a bandwidth that satisfies a threshold value.

Although Fig. 8 shows example blocks of process 800, in some aspects, process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 8. Additionally, or alternatively, two or more of the blocks of process 800 may be performed in parallel.

The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the aspects.

As used herein, the term “component” is intended to be broadly construed as hardware, firmware, and/or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and/or a combination of hardware and software.

As used herein, satisfying a threshold may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, and/or the like.

It will be apparent that systems and/or methods described herein may be implemented in different forms of hardware, firmware, and/or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and/or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and/or methods were described herein without reference to specific software code-it being understood that software and hardware can be designed to implement the systems and/or methods based, at least in part, on the description herein.

Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of various aspects includes each dependent claim in combination with every other claim in the claim set. A phrase referring to “at least one of” a list of items refers to any combination of those items, including single members. As an example, “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .

No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles “a” and “an” are intended to include one or more items, and may be used interchangeably with “one or more. ” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, a combination of related and unrelated items, and/or the like) , and may be used interchangeably with “one or more. ” Where only one item is intended, the phrase “only one” or similar language is used. Also, as used herein, the terms “has, ” “have, ” “having, ” and/or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.

Claims

A method of wireless communication performed by a user equipment (UE) , comprising:

determining a mapping of encoded bits for a communication to one or two frequency hop locations in a slot,

wherein the encoded bits for the communication are cyclic shifted; and

transmitting the communication according to the mapping of the encoded bits to the one or two frequency hop locations.
The method of claim 1, wherein the communication is a first repetition of the communication that is transmitted in a first slot, and

wherein the method further comprises:

transmitting a second repetition of the communication in a second slot,

wherein the second repetition is according to a mapping of the encoded bits, that are not cyclic shifted, to one or two frequency hop locations in the second slot.
The method of claim 2, wherein the first repetition is transmitted in two frequency hop locations in the first slot and the second repetition is transmitted in two frequency hop locations in the second slot.
The method of claim 3, wherein the two frequency hop locations in the first slot and the two frequency hop locations in the second slot have a same frequency hopping pattern.
The method of claim 2, further comprising:

transmitting a third repetition of the communication in a third slot,

wherein the third repetition is according to a mapping of the encoded bits, that are cyclic shifted, to one or two frequency hop locations in the third slot, and

wherein the encoded bits of the third repetition and the encoded bits of the first repetition are cyclic shifted from different positions in the encoded bits.
The method of claim 1, wherein the encoded bits for the communication are cyclic shifted from a position in the encoded bits that is based at least in part on a length of one or more code blocks represented by the encoded bits.
The method of claim 1, wherein the communication includes a physical uplink shared channel that includes encoded bits of an uplink shared channel (UL-SCH) communication and encoded bits of uplink control information (UCI) that includes one or more of hybrid automatic repeat request (HARQ) feedback, part 1 channel state information (CSI) , or part 2 CSI, and

wherein the encoded bits of the UL-SCH communication and the encoded bits of the one or more of the HARQ feedback, the part 1 CSI, or the part 2 CSI are cyclic shifted separately.
The method of claim 1, wherein the communication includes a physical uplink control channel communication that includes encoded bits of part 2 channel state information (CSI) and encoded bits of one or more of hybrid automatic repeat request (HARQ) feedback, a scheduling request, or part 1 channel state information (CSI) .
The method of claim 8, wherein the encoded bits of the part 2 CSI and the encoded bits of the one or more of the HARQ feedback, the scheduling request, or the part 1 CSI are cyclic shifted separately.
The method of claim 9, wherein the encoded bits of the one or more of the HARQ feedback, the scheduling request, or the part 1 CSI are cyclic shifted jointly.
A method of wireless communication performed by a user equipment (UE) , comprising:

determining two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots; and

transmitting the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets,

wherein the more than two frequency hop locations are different.
The method of claim 11, wherein a first repetition of the communication is transmitted in a first frequency hop location and a second frequency hop location in a first slot and a second repetition of the communication is transmitted in a third frequency hop location and a fourth frequency hop location in a second slot.
The method of claim 12, where a frequency offset from the first frequency hop location to the second frequency hop location is opposite to a frequency offset from the third frequency hop location to the fourth frequency hop location.
The method of claim 11, wherein a first repetition of the communication is transmitted in a single frequency hop location of a first slot, a second repetition of the communication is transmitted in a single frequency hop location of a second slot, a third repetition of the communication is transmitted in a single frequency hop location of a third slot, and a fourth repetition of the communication is transmitted in a single frequency hop location of a fourth slot.
The method of claim 11, wherein the two or more frequency offsets are determined based at least in part on an indication of the two more frequency offsets received in downlink control information.
The method of claim 11, wherein the communication is transmitted in a bandwidth part of a bandwidth that satisfies a threshold value.
A user equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:

determine a mapping of encoded bits for a communication to one or two frequency hop locations in a slot,

wherein the encoded bits for the communication are cyclic shifted; and

transmit the communication according to the mapping of the encoded bits to the one or two frequency hop locations.
A user equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:

determine two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots; and

transmit the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets,

wherein the more than two frequency hop locations are different.
A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:

one or more instructions that, when executed by one or more processors of a user equipment (UE) , cause the one or more processors to:

determine a mapping of encoded bits for a communication to one or two frequency hop locations in a slot,

wherein the encoded bits for the communication are cyclic shifted; and

transmit the communication according to the mapping of the encoded bits to the one or two frequency hop locations.
A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:

one or more instructions that, when executed by one or more processors of a user equipment (UE) , cause the one or more processors to:

determine two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots; and

transmit the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets,

wherein the more than two frequency hop locations are different.
An apparatus for wireless communication, comprising:

means for determining a mapping of encoded bits for a communication to one or two frequency hop locations in a slot,

wherein the encoded bits for the communication are cyclic shifted; and

means for transmitting the communication according to the mapping of the encoded bits to the one or two frequency hop locations.
An apparatus for wireless communication, comprising:

means for determining two or more frequency offsets for transmitting a communication in more than two frequency hop locations in multiple slots; and

means for transmitting the communication in the more than two frequency hop locations in the multiple slots according to the two or more frequency offsets,

wherein the more than two frequency hop locations are different.