Synchronization signal block and control resource set multiplexing in wireless communications
By multiplexing SSB and CORESET in the frequency domain to form multiplexing blocks and inserting switching gaps between symbol sets, the efficiency and stability issues during beam switching are solved, thereby improving the efficiency and reliability of wireless communication systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QUALCOMM INC
- Filing Date
- 2022-01-10
- Publication Date
- 2026-05-12
AI Technical Summary
In wireless communication systems, the switching gap during beam switching adds extra overhead and reduces system efficiency. Furthermore, when switching between different synchronization signal blocks (SSBs) and control resource sets (CORESETs) in succession, the CP may not provide enough time, leading to communication instability.
By multiplexing SSB and CORESET in the frequency domain to form multiplexing blocks and inserting switching gaps between symbol sets, RF components are allowed to switch between different beams while using different waveforms (such as OFDM and DFT-s-OFDM) and common or independent reference signals for channel estimation.
It reduces the overhead of switching intervals, improves system efficiency and communication reliability, and provides flexible waveform selection and enhanced channel estimation capabilities.
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Figure CN122027428A_ABST
Abstract
Description
[0001] This application is a divisional application of application filed on August 4, 2023, with application number 202280013431.4 and invention title "Multiplexing of Synchronization Signal Blocks and Control Resource Sets in Wireless Communication". Cross-references
[0002] This patent application claims the benefit of U.S. Patent Application No. 17 / 175,444, filed February 12, 2021, entitled “SYNCHRONIZATION SIGNAL BLOCK AND CONTROL RESOURCE SET MULTIPLEXING INWIRELESS COMMUNICATIONS”, which has been assigned to the assignee of this application. Technical Field
[0003] The following discussion relates to wireless communication, including the multiplexing of synchronization signal blocks and control resource sets in wireless communication. Background Technology
[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasting. These systems are capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems (e.g., Long Term Evolution (LTE) systems, improved LTE (LTE-A) systems, or LTE-A Pro systems) and fifth-generation (5G) systems (which may be referred to as New Radio (NR) systems). These systems can employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM).
[0005] Wireless multiple access communication systems may include one or more base stations or one or more network access nodes, each supporting communication with multiple communication devices (which may also be referred to as user equipment (UE)). In some wireless communication systems, the UE and the base station may support communication using multiple beams. In such systems, beam selection techniques may include the base station transmitting multiple synchronization signal blocks (SSBs) on multiple different beams, which can be monitored at the UE to select one or more beams that provide suitable channel quality for communication. For the selected beam, the UE may also monitor a control resource set (CORESET) that can provide indications of resources containing system information (e.g., CORESET0, which can provide resources that provide system information blocks (SIBs)). Techniques for enhancing the transmission and reception of SSBs and CORESETs may be desirable for improving overall system efficiency and reliability. Summary of the Invention
[0006] The described techniques relate to improved methods, systems, apparatuses, and devices for supporting the multiplexing of Synchronization Signal Blocks (SSBs) and Control Resource Sets (CORESETs) in wireless communications. Various aspects of this disclosure provide techniques for multiplexing SSBs and CORESETs in the frequency domain to form multiplexed blocks that can be transmitted using a set of symbols. A base station can transmit multiple multiplexed blocks using multiple different beams (e.g., in an SSB burst), and a switching gap can be provided between each multiplexed block, allowing components to be switched between different beams. In some cases, the switching gap is longer than the duration of the cyclic prefix (CP) associated with each symbol in the symbol set of each multiplexed block. In some cases, within one or more multiplexed blocks, the associated SSB can use a different waveform than the CORESET (e.g., the SSB can use an Orthogonal Frequency Division Multiplexing (OFDM) waveform, while the CORESET can use a Discrete Fourier Transform Extended OFDM (DFT-s-OFDM) waveform). In some cases, the multiplexed block can use a common reference signal for both the SSB and the CORESET. In other cases, SSB and CORESET can use independent reference signals.
[0007] A method for wireless communication at a user equipment (UE) is described. The method may include: monitoring a first beam for a first multiplexed block, the first multiplexed block including a first synchronization signal block multiplexed with a first control resource set in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix; monitoring a second beam for a second multiplexed block after a handover gap following the first multiplexed block, the second multiplexed block including a second synchronization signal block multiplexed with a second control resource set in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein an initial cyclic prefix of an initial symbol of the second multiplexed block begins after the handover gap; and decoding one or more of the first multiplexed block or the second multiplexed block.
[0008] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: monitor a first beam for a first multiplexed block, the first multiplexed block including a first synchronization signal block multiplexed with a first control resource set in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix; monitor a second beam for a second multiplexed block after a handover gap following the first multiplexed block, the second multiplexed block including a second synchronization signal block multiplexed with a second control resource set in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein an initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap; and decode one or more of the first multiplexed block or the second multiplexed block.
[0009] Another apparatus for wireless communication at a UE is described. The apparatus may include: unit for monitoring a first beam for a first multiplexed block, the first multiplexed block including a first synchronization signal block multiplexed with a first control resource set in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix; unit for monitoring a second beam for a second multiplexed block after a handover gap following the first multiplexed block, the second multiplexed block including a second synchronization signal block multiplexed with a second control resource set in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein an initial cyclic prefix of an initial symbol of the second multiplexed block begins after the handover gap; and unit for decoding one or more of the first multiplexed block or the second multiplexed block.
[0010] A non-transitory computer-readable medium is described, storing code for wireless communication at a UE. The code may include instructions executable by a processor to: monitor a first beam for a first multiplexed block, the first multiplexed block including a first synchronization signal block multiplexed with a first control resource set in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix; monitor a second beam for a second multiplexed block after a handover gap following the first multiplexed block, the second multiplexed block including a second synchronization signal block multiplexed with a second control resource set in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein an initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap; and decode one or more of the first multiplexed block or the second multiplexed block.
[0011] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first synchronization signal block may be transmitted using a first waveform, and the first control resource set may be transmitted using a second waveform, which is different from the first waveform. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first waveform may be an orthogonal frequency division multiplexing (OFDM) waveform or a discrete Fourier transform extended OFDM (DFT-s-OFDM) waveform, and the second waveform may be an OFDM waveform or a DFT-s-OFDM waveform.
[0012] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for determining one or more of the frequency allocation, bandwidth, or duration of the first control resource set based on one or more predetermined values or indications provided in an information block within the first synchronization signal block. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, each of the first synchronization signal block and the first control resource set, as well as each of the second synchronization signal block and the second control resource set, is multiplexed with a continuous frequency domain allocation.
[0013] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: estimating a channel associated with the first synchronization signal block and the first control resource set based on a first reference signal included in the first multiplexing block, wherein the first reference signal spans frequency resources associated with the first synchronization signal block and the first control resource set. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first reference signal spans a fixed frequency bandwidth associated with the first multiplexing block. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing blind decoding of two or more frequency bandwidth candidates within the first multiplexing block to identify the frequency bandwidth of the first reference signal. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: identifying the frequency bandwidth containing the first reference signal based on an indication provided by a synchronization signal within the first synchronization signal block.
[0014] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the estimation may include operations, features, units, or instructions for performing: estimating the channel associated with the first synchronization signal block based on a first portion of the first reference signal spanning a first frequency bandwidth associated with the first synchronization signal block; determining a second frequency bandwidth associated with the first control resource set based at least in part on information from the first synchronization signal block; and estimating the channel associated with the first control resource set based on a second portion of the first reference signal spanning the second frequency bandwidth.
[0015] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing: estimating a first channel associated with the first synchronization signal block based on a first reference signal in a first frequency bandwidth associated with the first synchronization signal block; and estimating a second channel associated with the first control resource set based on a second reference signal in a second frequency bandwidth associated with the first control resource set.
[0016] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for estimating the channel associated with an associated multiplex block based on reference signals in dedicated Discrete Fourier Transmission Extended Orthogonal Frequency Division Multiplexing (DFT-s-ODFM) symbols within each multiplex block. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for estimating the channel associated with an associated multiplex block based on reference signals in a subset of subcarriers located within a symbol of each multiplex block. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for estimating the channel associated with each multiplex block based on reference signals in a subset of time-domain symbols located in a set of time-domain symbols generated after Fast Fourier Transform (FFT) and Inverse Discrete Fourier Transform of one or more received symbols of the associated multiplex block.
[0017] A method for wireless communication at a base station is described. The method may include: multiplexing a first synchronization signal block and a first control resource set into a first multiplexed block in the frequency domain for a first beam, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix; multiplexing a second synchronization signal block and a second control resource set into a second multiplexed block in the frequency domain for a second beam, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix; transmitting the first multiplexed block in the first set of symbols; and transmitting the second multiplexed block in the second set of symbols after a handover gap following the first set of symbols, wherein an initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap.
[0018] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: multiplex a first synchronization signal block and a first control resource set into a first multiplexed block in the frequency domain for a first beam, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix; multiplex a second synchronization signal block and a second control resource set into a second multiplexed block in the frequency domain for a second beam, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix; transmit the first multiplexed block in the first set of symbols; and transmit the second multiplexed block in the second set of symbols after a handover gap following the first set of symbols, wherein the initial cyclic prefix of the initial symbol of the second multiplexed block begins after the handover gap.
[0019] Another apparatus for wireless communication at a base station is described. The apparatus may include: units for multiplexing a first synchronization signal block and a first control resource set into a first multiplexed block in the frequency domain for a first beam, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix; units for multiplexing a second synchronization signal block and a second control resource set into a second multiplexed block in the frequency domain for a second beam, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix; units for transmitting the first multiplexed block in the first set of symbols; and units for transmitting the second multiplexed block in the second set of symbols after a handover gap following the first set of symbols, wherein an initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap.
[0020] A non-transitory computer-readable medium is described, storing code for wireless communication at a base station. The code may include instructions executable by a processor to: multiplex a first synchronization signal block and a first control resource set into a first multiplexed block in the frequency domain for a first beam, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix; multiplex a second synchronization signal block and a second control resource set into a second multiplexed block in the frequency domain for a second beam, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix; transmit the first multiplexed block in the first set of symbols; and transmit the second multiplexed block in the second set of symbols after a handover gap following the first set of symbols, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap.
[0021] In some examples of the methods, apparatuses and non-transitory computer-readable media described herein, the first synchronization signal block may be transmitted using a first waveform, and the first control resource set may be transmitted using a second waveform, which is a waveform different from the first waveform, wherein the first waveform may be an OFDM waveform or a DFT-s-OFDM waveform, and the second waveform may be an OFDM waveform or a DFT-s-OFDM waveform.
[0022] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining one or more of the frequency allocation, bandwidth, or duration of the first control resource set based on one or more predetermined values or indications provided in an information block within the first synchronization signal block, wherein the associated synchronization signal block and control resource set of each associated multiplexed block are multiplexed in a continuous frequency domain allocation.
[0023] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, transmitting the first multiplexed block may include operations, features, units, or instructions for performing the following: transmitting a first reference signal in the first multiplexed block, wherein the first reference signal spans frequency resources associated with the first synchronization signal block and the first control resource set. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first reference signal spans a fixed frequency bandwidth associated with the first multiplexed block. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: selecting a frequency bandwidth for the first reference signal from two or more blind decoding frequency bandwidth candidates within the first multiplexed block. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: selecting a frequency bandwidth for the first reference signal from two or more available frequency bandwidths within the first multiplexed block; and transmitting an indication of the frequency bandwidth for the first reference signal in a synchronization signal within the first synchronization signal block.
[0024] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the transmission of the first multiplex block may include operations, features, units, or instructions for performing the following: transmitting a first reference signal in a first frequency bandwidth associated with the first synchronization signal block; and transmitting a second reference signal in a second frequency bandwidth associated with the first control resource set.
[0025] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for transmitting a reference signal in each multiplexing block, wherein the reference signal may be transmitted as: a dedicated DFT-s-ODFM symbol within the associated multiplexing block, a subset of subcarriers within one or more symbols of the associated multiplexing block, or a subset of time-domain symbols inserted into a set of time-domain symbols prior to the discrete Fourier transform of the associated multiplexing block. Attached Figure Description
[0026] Figure 1 Examples of wireless communication systems supporting the multiplexing of synchronization signal blocks (SSBs) and control resource sets (CORESETs) in wireless communication are shown, according to various aspects of this disclosure.
[0027] Figure 2 Examples of wireless communication systems supporting SSB and CORESET multiplexing in wireless communication are shown, according to various aspects of this disclosure.
[0028] Figures 3 to 5 Examples of radio resources for multiplexing blocks supporting SSB and CORESET multiplexing in wireless communications are shown, according to various aspects of this disclosure.
[0029] Figure 6 and 7 Examples of transmit / receive architectures supporting SSB and CORESET multiplexing in wireless communications are shown in accordance with various aspects of this disclosure.
[0030] Figure 8 An example of a process flow supporting SSB and CORESET multiplexing in wireless communication is shown, according to various aspects of this disclosure.
[0031] Figure 9 and 10 A block diagram of an apparatus supporting SSB and CORESET multiplexing in wireless communication is shown, according to various aspects of this disclosure.
[0032] Figure 11 A block diagram of a communication manager supporting SSB and CORESET multiplexing in wireless communication is shown, according to various aspects of this disclosure.
[0033] Figure 12 A schematic diagram of a system including devices supporting SSB and CORESET multiplexing in wireless communication is shown, according to various aspects of this disclosure.
[0034] Figure 13 and 14 A block diagram of an apparatus supporting SSB and CORESET multiplexing in wireless communication is shown, according to various aspects of this disclosure.
[0035] Figure 15 A block diagram of a communication manager supporting SSB and CORESET multiplexing in wireless communication is shown, according to various aspects of this disclosure.
[0036] Figure 16 A schematic diagram of a system including devices supporting SSB and CORESET multiplexing in wireless communication is shown, according to various aspects of this disclosure.
[0037] Figures 17 to 20 A flowchart illustrating a method for supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. Detailed Implementation
[0038] In some wireless communication systems, the UE and base station can support communication using multiple beams. In such systems, beam selection techniques may include the base station transmitting multiple synchronization signal blocks (SSBs) on multiple different beams, which can be monitored at the UE to select one or more beams that provide suitable channel quality for communication. Multiple SSBs can be transmitted in SSB bursts, where consecutive SSBs are transmitted, and radio frequency (RF) components (e.g., analog phase shift and gain components associated with different antenna elements of an antenna panel or antenna array) are switched based on specific beams within the different beams. The switching time for changing the RF components for each beam switch can correspond to the time for signaling the switch plus the time for completing tuning at the specific RF component. In some cases, an orthogonal frequency division multiplexing (OFDM) symbol set can be used to transmit SSBs, and each symbol may include a cyclic prefix (CP), where a copy of the last portion of the OFDM symbol is appended before the beginning of the OFDM symbol (e.g., to provide a guard period for inter-symbol interference mitigation). In some cases, the CP can provide sufficient time for beam switching, allowing the RF components to be switched before the CP ends. However, the duration of a symbol (and its corresponding CP) is inversely proportional to the subcarrier spacing (SCS) used for communication, and when the SCS is relatively large, the associated CP may not provide enough time for beam switching.
[0039] When the CP (Content Provider) does not provide sufficient time for beam switching (e.g., due to a relatively large SCS, relatively large switching time for a specific RF component, etc.), additional handover gaps can be provided to allow sufficient time for beam switching. However, such handover gaps add additional overhead and reduce overall system efficiency. Furthermore, in addition to SSB transmissions where beam switching is performed between consecutive different SSBs, the base station can transmit multiple control resource sets (CORESETs) on each of the different beams. These can include system information that the UE can use to communicate with the base station using that specific beam (e.g., CORESET#0 that the UE can use to derive System Information Block 1 (SIB1) information). Therefore, multiple CORESETs can also be transmitted on multiple beams, and additional handover gaps may be required when the CP does not provide sufficient time for beam switching, especially when CORESETs are transmitted using different time resources than SSBs. Therefore, in such cases, adding handover gaps for both SSB and CORESET transmissions on multiple beams may add further overhead. In some cases, SSBs and CORESETs can be multiplexed in the frequency domain and transmitted using the same time resources on the same beam.
[0040] Based on the various aspects discussed herein, SSBs and CORESETs can be multiplexed in the frequency domain to provide multiplexed blocks and transmitted using symbol sets on specific beams. Furthermore, in addition to the initial CP of the initial symbol in the symbol set, switching gaps can be located between consecutive symbol sets to provide sufficient switching time for the RF components to the different beams used for different SSB and CORESET transmissions. In some cases, within one or more multiplexed blocks, the associated SSB can use a different waveform than the CORESET (e.g., the SSB can use an OFDM waveform, while the CORESET can use a Discrete Fourier Transform Extended OFDM (DFT-s-OFDM) waveform). In some cases, the multiplexed block can use a common reference signal for both the SSB and CORESET. In other cases, the SSB and CORESET can use independent reference signals. When using a common reference signal, the channel estimation based on the reference signal for decoding the SSB (e.g., decoding the Physical Broadcast Channel (PBCH) transmitted in the SSB) can use the reference signal bandwidth. This reference signal bandwidth is a predetermined fixed bandwidth, which can be selected from the set of available bandwidths and blindly decoded at the UE. It can be indicated by the synchronization signal in the SSB, or it can be simply a portion of the bandwidth that overlaps with the SSB. In some cases, the common reference signal can be transmitted in dedicated DFT-s-OFDM symbols, can be transmitted in multiple subcarriers within a symbol of an associated multiplexed block, or can be located in a subset of time-domain symbols inserted into the time-domain symbol set before the DFT of the associated multiplexed block.
[0041] Specific aspects of the subject matter described herein can be implemented to achieve one or more advantages. For example, the described techniques can allow a single handover gap between multiplexed blocks comprising both SSB and CORESET, thereby improving system efficiency. Furthermore, the described techniques can provide the flexibility to select different waveforms within multiplexed blocks used for SSB and CORESET transmissions. Alternatively or concurrently, the described techniques can use a common reference signal spanning both SSB and CORESET to provide enhanced channel estimation. Such techniques can thereby reduce the overhead associated with handover gaps and improve the reliability of wireless communication, among other advantages. Therefore, the supported techniques can include improved network operation, and in some examples, can improve network efficiency and overall user experience, among other benefits.
[0042] First, various aspects of this disclosure are described within the context of a wireless communication system. Then, examples of multiplexing blocks including SSB and CORESET, along with the associated process flow, are discussed. These aspects are further illustrated by apparatus diagrams, system diagrams, and flowcharts relating to SSB and CORESET multiplexing in wireless communication, and are described with reference to these diagrams.
[0043] Figure 1 Examples of a wireless communication system 100 supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure are shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an improved LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, or communication with low-cost and low-complexity devices, or any combination thereof.
[0044] Base stations 105 can be distributed throughout a geographical area to form a wireless communication system 100, and can be devices of different forms or with different capabilities. Base stations 105 and UE 115 can communicate wirelessly via one or more communication links 125. Each base station 105 can provide a coverage area 110, and UE 115 and base station 105 can establish one or more communication links 125 on the coverage area 110. Coverage area 110 can be an example of a geographical area where base station 105 and UE 115 can support signal transmission according to one or more radio access technologies.
[0045] UE 115 can be distributed throughout the entire coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary, mobile, or both at different times. UE 115 can be devices of different forms or with different capabilities. Figure 1 Some example UE 115s are shown in the document. The UE 115 described herein is capable of communicating with various types of devices, such as other UE 115s, base station 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices). Figure 1 As shown.
[0046] Base station 105 can communicate with core network 130, communicate with each other, or perform both operations. For example, base station 105 can interface with core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base station 105 can communicate with each other directly (e.g., directly between base stations 105) on backhaul links 120 (e.g., via X2, Xn, or other interfaces), or indirectly (e.g., via core network 130), or perform both operations. In some examples, backhaul link 120 can be or includes one or more radio links.
[0047] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, base station transceiver, radio base station, access point, radio transceiver, node B, evolved node B (eNB), next-generation node B or gigabit node B (any of which may be referred to as gNB), home node B, home evolved node B, or some other suitable term.
[0048] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or some other suitable term, wherein "device" may also be referred to as a unit, station, terminal, or client, and other examples. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, and other examples, which may be implemented in various items such as electrical appliances, vehicles, meters, and other examples.
[0049] The UE 115 described in this document can communicate with various types of devices, such as other UE 115s that can sometimes act as repeaters, as well as base station 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, and other examples, such as... Figure 1 As shown.
[0050] UE 115 and base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating operation for the carrier, user data, or other signaling. Wireless communication system 100 can support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used in conjunction with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers.
[0051] In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition or control signaling that coordinates operation against other carriers. The carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be positioned according to a channel grid for discovery by UE 115. The carrier may operate in standalone mode, where UE 115 performs initial acquisition and connection via the carrier, or the carrier may operate in non-standalone mode, where different carriers (e.g., the same or different radio access technologies) are used to anchor the connection.
[0052] The communication link 125 shown in the wireless communication system 100 may include uplink transmission from UE 115 to base station 105, or downlink transmission from base station 105 to UE 115. The carrier may carry downlink or uplink communication (e.g., in FDD mode) or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).
[0053] A carrier may be associated with a specific bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of defined bandwidths for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication on a specific carrier bandwidth, or may be configurable to support communication on one carrier bandwidth in a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a subband, BWP) or all of the carrier bandwidth.
[0054] The signal waveform transmitted on a carrier can consist of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as Orthogonal Frequency Division Multiplexing (OFDM) or Discrete Fourier Transform Extended OFDM (DFT-S-OFDM). In a system employing MCM, a resource element can consist of one symbol period (e.g., the duration of a modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element can depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements UE 115 receives and the higher the order of the modulation scheme, the higher the data rate can be for UE 115. Wireless communication resources can refer to a combination of radio frequency spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers can further increase the data rate or data integrity used for communication with UE 115.
[0055] It can support one or more digital schemes (numerologies) for the carrier, wherein the digital schemes may include subcarrier spacing ( (and cyclic prefix). A carrier can be divided into one or more BWPs with the same or different digital schemes. In some examples, UE 115 can be configured with multiple BWPs. In some examples, a single BWP for a carrier can be active at a given time, and communication for UE 115 can be restricted to one or more active BWPs.
[0056] It can be in the basic unit of time (which can be, for example, referred to as) The sampling period is seconds, where It can represent the maximum supported subcarrier spacing, and The time interval for base station 105 or UE 115 can be represented as a multiple of the maximum supported Discrete Fourier Transform (DFT) size. The time interval for communication resources can be organized based on radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).
[0057] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., this depends on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple micro-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., (Number) sampling periods. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.
[0058] A subframe, time slot, micro-time slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst form of a shortened TTI (sTTI)).
[0059] Physical channels can be multiplexed on a carrier using various techniques. For example, one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels on a downlink carrier. A control region (e.g., a control resource set (CORESET)) for physical control channels can be defined by multiple symbol periods and can extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) can be configured for a group of UEs 115. For example, one or more of the UEs 115 can monitor or search for control regions against control information based on one or more search space sets, and each search space set can include one or more control channel candidates arranged in a cascaded manner at one or more aggregation levels. The aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set may include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set used to send control information to a specific UE 115.
[0060] In some examples, base station 105 may be mobile, and therefore provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. Wireless communication system 100 may include, for example, a heterogeneous network, in which different types of base stations 105 use the same or different radio access technologies to provide coverage for various geographic coverage areas 110.
[0061] Some UE 115 devices (such as MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated machine-to-machine communication (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with each other or with base station 105 without human intervention. In some examples, M2M communication or MTC can include communication from devices that have integrated sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents it to humans interacting with the application. Some UE 115 devices can be designed to collect information or automate the behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, climate and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based billing.
[0062] Wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private or group communication and can be supported by one or more mission-critical services, such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions can include service prioritization, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency are used interchangeably herein.
[0063] In some examples, UE 115 may also communicate directly with other UE 115s on a device-to-device (D2D) communication link 135 (e.g., using peer-to-peer (P2P) or D2D protocols). One or more UEs 115s utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UEs 115s in such a group may be outside the geographic coverage area 110 of base station 105 or otherwise unable to receive transmissions from base station 105. In some examples, groups of UEs 115s communicating via D2D communication may utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115s without involving base station 105.
[0064] In some systems, the D2D communication link 135 may be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicle may communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these. The vehicle may signal information relating to traffic conditions, signal control, weather, safety, emergencies, or any other information relating to the V2X system. In some examples, a vehicle in a V2X system may communicate with roadside infrastructure (such as a roadside unit), or communicate with the network via one or more network nodes (e.g., base station 105) using vehicle-to-network (V2N) communication, or both.
[0065] Core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC), and can include at least one control plane entity (e.g., a mobility management entity (MME), access and mobility management function unit (AMF)) managing access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), packet data network (PDN) gateway (P-GW), or user plane function unit (UPF)) routing packets to or interconnecting with external networks. The control plane entity can manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by base station 105 associated with core network 130. User IP packets can be transmitted through the user plane entity, which can provide IP address allocation and other functions. The user plane entity can connect to IP service 150 for one or more network operators. IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.
[0066] Some network devices (e.g., base station 105) may include sub-components such as access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with UE 115 through one or more other access network transport entities 145 (which may be referred to as a radio headend, smart radio headend, or transmit / receive point (TRP)). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across individual network devices (e.g., radio headends and ANCs) or incorporated into a single network device (e.g., base station 105).
[0067] Wireless communication system 100 can operate using one or more frequency bands (typically in the range of 300 MHz to 300 GHz). The region from 300 MHz to 3 GHz is often referred to as the Ultra High Frequency (UHF) region or decimeter band because the wavelength range extends from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but the waves can be sufficiently permeable to penetrate structures for use in macrocells to provide service to UE 115 located indoors. Compared to the transmission of smaller frequencies and longer waves in the lower 300 MHz portion of the spectrum in the High Frequency (HF) or Very High Frequency (VHF) regions, UHF wave transmission can be associated with smaller antennas and shorter distances (e.g., less than 100 km).
[0068] The wireless communication system 100 can also operate in the ultra-high frequency (SHF) region using a frequency band from 3 GHz to 30 GHz (also referred to as the centimeter band) or in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also referred to as the millimeter band). In some examples, the wireless communication system 100 can support millimeter-wave (mmW) communication between the UE 115 and the base station 105, and the EHF antennas of the corresponding device can be even smaller and more closely spaced compared to UHF antennas. In some examples, this can facilitate the use of antenna arrays within the device. However, EHF transmissions may suffer from even greater atmospheric attenuation and shorter distances compared to SHF or UHF transmissions. The techniques disclosed herein can be employed across transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may vary depending on the country or regulatory authority.
[0069] Wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, wireless communication system 100 can employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in unlicensed radio frequency spectrum bands, devices (such as base station 105 and UE 115) can employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands can be based on carrier aggregation configurations that combine component carriers operating in licensed frequency bands (e.g., LAA). Operation in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and other examples.
[0070] Base station 105 or UE 115 may be equipped with multiple antennas, which can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels (which may support MIMO operation or transmit or receive beamforming). For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have antenna arrays with multiple rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Alternatively or additionally, antenna panels may support radio frequency beamforming for signals transmitted via antenna ports.
[0071] Base station 105 or UE 115 can use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such a technique can be called spatial multiplexing. For example, a transmitting device can transmit multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device can receive multiple signals via different antennas or different combinations of antennas. Each of the multiple signals can be referred to as a separate spatial stream and can carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers can be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO) (where multiple spatial layers are transmitted to the same receiving device) and multi-user MIMO (MU-MIMO) (where multiple spatial layers are transmitted to multiple devices).
[0072] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105, UE 115) to form or guide an antenna beam (e.g., transmit beam, receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array such that some signals propagating relative to a specific orientation of the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements can include applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with the transmitting or receiving device. The adjustments associated with each antenna element can be defined by a set of beamforming weights associated with a specific orientation (e.g., relative to the antenna array of the transmitting or receiving device, or relative to some other orientation).
[0073] As part of beamforming operations, base station 105 or UE 115 may use beam scanning techniques. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Base station 105 may transmit some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) multiple times in different directions. For example, base station 105 may transmit signals according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by a transmitting device (such as base station 105) or by a receiving device (such as UE 115)) to identify the beam direction for subsequent transmissions or receptions performed by base station 105.
[0074] Base station 105 may transmit signals (e.g., data signals associated with a specific receiving device, such as UE 115) in a single beam direction. In some examples, the beam direction associated with transmission along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 with the highest signal quality or otherwise acceptable signal quality.
[0075] In some examples, multiple beam directions can be used to perform transmissions by a device (e.g., base station 105 or UE 115), and the device can use a combination of digital precoding or radio frequency beamforming to generate combined beams for (e.g., from base station 105 to UE 115) transmissions. UE 115 can report feedback indicating precoding weights for one or more beam directions, and this feedback can correspond to a configured number of beams spanning the system bandwidth or one or more subbands. Base station 105 can transmit reference signals that can be precoded or unprecoded (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)). UE 115 can provide feedback on beam selection, which can be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may employ similar techniques to transmit signals multiple times in different directions (e.g., to identify beam directions for subsequent transmissions or receptions by UE 115) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).
[0076] When receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105, the receiving device (e.g., UE 115) can attempt multiple receiving configurations (e.g., directional listening). For example, the receiving device can attempt multiple receiving directions by receiving via different antenna subarrays, by processing the received signals according to different antenna subarrays, by receiving according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different sets of directional listening weights), or by processing the received signals according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array (any of these operations can be referred to as "listening" according to different receiving configurations or receiving directions). In some examples, the receiving device can use a single receiving configuration to receive along a single beam direction (e.g., when receiving data signals). A single receiver configuration can be aligned to a beam direction determined based on listening in different receiver configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening in multiple beam directions).
[0077] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP-based. The Radio Link Control (RLC) layer can perform packet segmentation and reassembly for transmission over logical channels. The Media Access Control (MAC) layer can perform priority handling and multiplexing of logical channels to transport channels. The MAC layer can also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide the establishment, configuration, and maintenance of RRC connections (which support radio bearers for user plane data) between the UE 115 and the base station 105 or core network 130. At the physical layer, transport channels can be mapped to physical channels.
[0078] In some cases, base station 105 can multiplex SSB and CORESET in the frequency domain to form multiplexed blocks transmitted using symbol sets. Base station 105 can transmit multiple multiplexed blocks using multiple different beams (e.g., in an SSB burst) and can provide a handover gap between each multiplexed block, allowing components to be switched between different beams. In some cases, the handover gap is longer than the duration of the CP associated with the initial symbol in the symbol set of each multiplexed block. In some cases, within one or more multiplexed blocks, the associated SSB can use a different waveform than the CORESET (e.g., the SSB can use an OFDM waveform, while the CORESET can use a DFT-s-OFDM waveform). In some cases, the multiplexed block can use a common reference signal for both the SSB and CORESET. In other cases, the SSB and CORESET can use independent reference signals.
[0079] Figure 2 Examples of a wireless communication system 200 supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure are shown. In some examples, the wireless communication system 200 may implement various aspects of the wireless communication system 100. The wireless communication system 200 may include a base station 105-a and a UE 115-a, which may be referenced Figure 1 Example of the corresponding device described. Base station 105-a and UE 115-a can communicate using one or more beams 215, and base station 105-a can participate in beam scanning operations to establish an active beam pair link with UE 115-a that can be used for downlink communication 205 and uplink communication 210.
[0080] In some examples, base station 105-a can participate in beam scanning operations to establish an active beam with UE 115-a. For example, base station 105-a can use multiple beams 215 to transmit SSB bursts, where synchronization signals (e.g., primary synchronization signal (PSS), secondary synchronization signal (SSS)) and PBCH transmissions can be transmitted in the corresponding beam directions. As discussed herein, for each beam 215, the SSB can be frequency-division multiplexed with the corresponding CORESET and transmitted in a multiplexed block, which may be referred to as the SS / PBCH / CORESET block (SSCB). Figure 2 In the example, base station 105-a may use a first beam 215-a to transmit a first SSCB 225 and may use a second beam 215-b to transmit a second SSCB 230. In some cases, the handover gap may be located between the first SSCB 225 and the second SSCB 230 to allow sufficient time for switching RF components between the first beam 215-a and the second beam 215-b. UE 115-a may use one or more receive beams 220 (which may include a first receive beam 220-a and a second receive beam 220-b) to monitor multiplex blocks. In some cases, UE 115-a may transmit an access request message 235 in response to the reception and decoding of SSBs and CORESETs in one or more multiplex blocks within the multiplex block.
[0081] In some cases, base station 105-a can provide SSB bursts for initial cell search performed by UE 115-a and other purposes, and in such cases, access request message 235 can be a random access request message. In some examples, an SSB can span four OFDM symbols, one symbol for PSS, two symbols for PBCH, and one symbol with frequency-division multiplexed SSS and PBCH. Furthermore, a CORESET corresponding to one or more SSBs can provide permission for SIBs (e.g., permission for SIB1 PDSCH) transmitted on search space set 0 on CORESET0 using PDCCH type 0. Multiplexing blocks can use SCS ranging from relatively low values (15 kHz or 30 kHz) to relatively high values (such as close to 1 MHz and higher). For example, some mmW bands (which may be referred to as frequency range 2 (FR2) spanning 24.25 GHz to 52.6 GHz) can use SCS of 120 kHz or 240 kHz. In addition, in some higher frequency bands (e.g., FR4 spanning from 52.6 GHz to 71 GHz), SCS can be increased (e.g., 960 kHz, 1920 kHz, 3840 kHz) to mitigate phase noise and increase the overall channelization bandwidth with a manageable FFT size.
[0082] As discussed in this paper, symbol time and CP decrease proportionally with the increase of SCS. Table 1 shows exemplary CP times (T) for multiple different SCS identified by SCS index (µ). cp ) and symbol time (T) symb ). Table 1 In some cases, the RF components within the transmit and receive circuits may take time to stabilize when switching between beams. For example, the RF components may take approximately 100 ns to perform a switch between different beams. In such cases, the CP time for a higher SCS (e.g., for an SCS at or above 960 kHz in the examples in Table 1) may be insufficient to allow beam switching between consecutive symbols, and may be necessary between consecutive symbols using different beams 215 (e.g., in...). Figure 2 In the example, a switching gap is provided between the first SSCB 225 and the second SSCB 230 to allow sufficient time to switch the RF components.
[0083] In some cases, the insertion of handover gaps can be enabled or disabled based on an SCS threshold value. Furthermore, in some cases, the duration of the handover gap can depend on the SCS to provide a larger handover gap for a larger SCS and a smaller handover gap or no handover gap for a relatively low SCS (e.g., a 90 ns handover gap for a 3840 kHz SCS, a 30 ns handover gap for a 960 kHz SCS, and no handover gap for SCSs below 960 kHz). In some cases, the length of the handover gap can correspond to the duration of an integer number of symbols. In other cases, the length of the handover gap can be a specified duration (e.g., 50 ns), which can correspond to a fractional symbol duration, or it can correspond to the duration of symbols in an SCS different from the SCS used to transmit the first SSCB 225 or the second SSCB 230.
[0084] Figure 3 Examples of radio resources 300 for supporting SSB and CORESET multiplexing in wireless communication are shown according to various aspects of this disclosure. In some examples, radio resources 300 may be used in various aspects of wireless communication systems 100 or 200. In this example, a first SSCB 305 may be transmitted in a first symbol set 310, and a second SSCB 345 may be transmitted in a second symbol set 350.
[0085] The first symbol set 310 may include multiple symbols 315, each having an associated CP 320. As discussed herein, the duration of symbols 315 and CP 320 may be associated with the base station and one or more UEs (e.g., Figure 1 or Figure 2 The SCS of communication between base station 105 and UE 115 is proportional. A first SSCB 305 may include a first SSB 325 and a first CORESET 330 (e.g., a first CORESET0 for communication using a first beam 335), which may be frequency-division multiplexed in a first symbol set 310 and transmitted using the first beam 335. A handover gap 340 may be provided between the first SSCB 305 and the second SSCB 345. As discussed herein, the duration of the handover gap 340 may provide sufficient time for the RF components to switch between different beams. A second symbol set 350 may include multiple symbols 355, each having an associated CP 360, the CP 360 having a duration proportional to the SCS used for the second SSCB 345. The second SSCB 345 may include a second SSB 365 and a second CORESET 370 (e.g., a second CORESET0 for communication using the second beam 375), which may be frequency-division multiplexed in the second symbol set 350 and transmitted using the second beam 375. Additional handover gaps and SSCBs may be transmitted depending on the number of SSBs that can be transmitted in an SSB burst.
[0086] As discussed herein, multiplexing SSBs 325 and 365 with CORESETs 330 and 370 in the frequency domain within the corresponding first symbol set 310 and second symbol set 350 allows for a single switching gap 340 for switching between the first beam 335 and the second beam 375, rather than the multiple switching gaps 340 required when there are one or more symbols of different beams in the SSB and CORESET transmissions for a particular beam. In some cases, OFDM waveforms or DFT-s-OFDM waveforms can be used for the transmission multiplexing block. In some cases, different waveforms can be used within the multiplexing block. For example, the first SSB 325 can use an OFDM waveform, and the first CORESET 330 can use a DFT-s-OFDM waveform. Although the various examples discussed herein may use OFDM, DFT-s-OFDM, or combinations thereof, other waveforms may be used for one or both of the SSB and CORESET transmissions, such as CP-OFDM, SC-FDMA, SC-QAM, etc.
[0087] In some cases, the frequency allocation (if DFT-s-OFDM or OFDM), bandwidth, duration, or any combination thereof for CORESET 330 and 370 can be specified or indicated in the MIB of the associated SSBs 325 and 365. In some cases, DFT-s-OFDM waveforms can be used to transmit both SSBs 325 and 365 and CORESET 330 and 370, and continuous frequency domain allocation can be provided, which can provide an enhanced peak-to-average power ratio (PAPR) for the associated SSBs 305 and 345. In some cases, SSBs and CORESETs can be multiplexed in non-contiguous resources in the frequency domain. When using continuous frequency domain allocation, the MIB may not need to include an indication of the offset used for the associated CORESET. In some cases, the receiving device (e.g., UE or base station) can use one or more reference signals provided with the multiplexed block to demodulate and decode the multiplexed block, referring to... Figure 4 and Figure 5 Examples of it were discussed.
[0088] Figure 4 An example of a radio resource 400 for supporting SSB and CORESET multiplexing in wireless communication is shown according to various aspects of this disclosure. In some examples, radio resource 400 may be used in various aspects of wireless communication systems 100 or 200. In this example, it is similar to that described in reference... Figure 3 The discussion focuses on the possibility of sending the first SSCB 405 and the second SSCB 410 within the corresponding symbol set.
[0089] The first SSCB 405 may include a first SSB 415 and a first CORESET 420, which may be frequency-division multiplexed in a first symbol set and transmitted using the first beam 425. A first handover gap 430 may be provided between the first SSCB 405 and the second SSCB 410, and a second handover gap 450 may be provided between the second SSCB 410 and a subsequent SSCB (if present). As discussed herein, the duration of the first handover gap 430 and the second handover gap 450 may provide sufficient time for the RF components to switch between different beams. The second SSCB 410 may include a second SSB 435 and a second CORESET 440, which may be frequency-division multiplexed in a second symbol set and transmitted using the second beam 445.
[0090] exist Figure 4In the example, the first SSCB 405 may include a first common reference signal 455 spanning frequency resources of both the first SSB 415 and the first CORESET 420. Similarly, the second SSCB 410 may include a second common reference signal 460 spanning frequency resources of both the second SSB 435 and the second CORESET 440. Common reference signals 455 and 460 can be used for channel estimation (e.g., demodulation reference signal (DMRS)) for the associated CORESETs 420 and 440, and for channel estimation (e.g., DMRS for PBCH) for the corresponding SSBs 415 and 435. In some cases, the number of symbols in the first SSB 415 containing the first common reference signal 455 may be zero, one or more, and the corresponding number of symbols in the first CORESET 420 may be zero, one or more. Similarly, the number of symbols in the second SSB 435 containing the second common reference signal 460 may be zero, one or more, and the corresponding number of symbols in the second CORESET 440 may be zero, one or more.
[0091] When using the first common reference signal 455, channel estimation may be required to decode the first SSB 415 to obtain the bandwidth of the associated first CORESET 420 (e.g., channel estimation may be required to decode the PBCH, which provides an indication of the bandwidth of the first CORESET 420). In some cases, the bandwidth of the first CORESET 420 may be determined by the receiving device (e.g., UE), and this bandwidth may be used to measure the first common reference signal 455. Such techniques may also be used for the second common reference signal 460 in the second SSCB 410. In some cases, the bandwidth of the first CORESET 420 may be a fixed bandwidth (e.g., a bandwidth specified for a wireless communication network). In some cases, the bandwidth of the first CORESET 420 may be one of a plurality of available bandwidths (e.g., three available bandwidths), and the receiving device may perform blind decoding of the first common reference signal 455 for each of the plurality of available bandwidths, and determine the bandwidth of the first CORESET 420 based on which blind decoding is successful (e.g., which bandwidth has a high correlation between the received signal and the estimated reference signal symbol). In some cases, the bandwidth of the first CORESET 420 can be indicated by the synchronization signal within the first SSB 415 (e.g., the available synchronization signal sequences, scrambling codes, or combinations thereof can be divided using different partitions associated with different CORESET bandwidths). In some cases, the receiving device can use only the portion of the first common reference signal 455 that overlaps with the first SSB 415 for channel estimation of the PBCH in the first SSB 415, and can determine the bandwidth of the first CORESET 420, and perform channel estimation for the first CORESET 420 based on the portion of the first common reference signal 455 that overlaps with the first CORESET 420 (or based on the entire bandwidth of the first common reference signal 455).
[0092] In some cases where the DFT-s-OFDM waveform is used for both CORESET and SSB, a common reference signal 455-460 can be inserted into the frequency resources of the dedicated DFT-s-OFDM symbols within the multiplexing block. This technique may incur overhead associated with the DFT-s-OFDM symbols, but it can provide enhanced PAPR and allow the receiving device to perform frequency-domain equalization on the reference signal. In other cases, a frequency-domain reference signal symbol can be inserted at the subcarrier mapping stage and before the inverse FFT (IFFT), such that the reference signal 455-460 shares the same DFT-s-OFDM symbol (or the same OFDM symbol) as the data. In such cases, frequency-domain equalization can be performed, and PAPR can be increased and overhead reduced compared to dedicated symbols used for the reference signal 455-460. (Refer to...) Figure 6 Examples of such reference signal techniques are discussed. In other cases, the time-domain symbols of the reference signal 455-460 can be inserted into the serial samples before the DFT (sharing the same DFT-s-OFDM symbols as the data), which uses less overhead than dedicated symbols and allows for time-domain equalization at the receiver. Figure 7 Examples of such reference signal techniques are discussed.
[0093] Figure 5 An example of a radio resource 500 using a separate reference signal for supporting SSB and CORESET multiplexing in wireless communication is shown according to various aspects of this disclosure. In some examples, radio resource 500 may be used in various aspects of wireless communication systems 100 or 200. In this example, it is similar to the reference signal. Figure 3 The discussion focuses on the possibility of sending the first SSCB 505 and the second SSCB 510 within the corresponding symbol set.
[0094] The first SSCB 505 may include a first SSB 515 and a first CORESET 520, which may be frequency-division multiplexed in a first symbol set and transmitted using a first beam 525. A first handover gap 530 may be provided between the first SSCB 505 and the second SSCB 510, and a second handover gap 550 may be provided between the second SSCB 510 and a subsequent SSCB (if present). As discussed herein, the durations of the first handover gap 530 and the second handover gap 550 may provide sufficient time for the RF components to switch between different beams. The second SSCB 510 may include a second SSB 535 and a second CORESET 540, which may be frequency-division multiplexed in a second symbol set and transmitted using a second beam 545.
[0095] exist Figure 5In the example, the first SSCB 505 may include a first SSB reference signal 555 spanning the frequency resources of the first SSB 515, and may include a first CORESET reference signal 560 spanning the frequency resources of the first CORESET 520. Similarly, the second SSCB 510 may include a second SSB reference signal 565 spanning the frequency resources of the second SSB 535, and may include a second CORESET reference signal 570 spanning the frequency resources of the second CORESET 540. The first SSB reference signal 555 (e.g., DMRS) may be used for channel estimation for the first SSB 515, and the first CORESET reference signal 560 (e.g., DMRS) may be used for channel estimation for the first CORESET 520. In some cases, the number of symbols in the first SSB 515 that include the first SSB reference signal 555 may be zero, one, or more, and the number of the same or different symbols in the first CORESET 520 that include the first CORESET reference signal 560 may be zero, one, or more. Similarly, the number of symbols containing the second SSB reference signal 565 in the second SSB 535 can be zero, one, or more, and the number of identical or different symbols containing the second CORESET reference signal 570 in the second CORESET 540 can be zero, one, or more. Such a separate reference signal allows the receiving UE to perform channel estimation independently, which may be useful in the absence of or without transmitting CORESET0.
[0096] Figure 6 An example of an architecture 600 supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. In some examples, architecture 600 can use, for example, reference... Figure 3 , 4 Or implement the reuse block discussed in 5. Figure 1 Or 2 aspects of wireless communication systems 100 or 200. In some aspects, architecture 600 includes transmitter 605 (e.g., base station 105) and receiver 610 (e.g., UE 115), as described herein.
[0097] In a broad sense, Figure 6 This is a schematic diagram illustrating example components of a wireless device according to certain aspects of this disclosure. The components shown may include those that can be used for transmitting and receiving wireless signals. Multiple architectures exist for wireless transmission and reception, and provide... Figure 6 This is for illustrative and discussion purposes only. The techniques discussed herein can be implemented using any suitable architecture. Figure 6In the example, transmitter 605 (e.g., a base station) can generate CORESET0 612 and PBCH 614 for transmission in a multiplexed block (e.g., for transmission in an SSCB, where the SSB and CORESET are multiplexed in the frequency domain in a symbol set). When transmitting both CORESET0 612 and PBCH 614 using DFT-s-OFDM, CORESET0 612 can be provided to a serial-to-parallel (S / P) component 618 that converts time-domain samples into parallel outputs, and PBCH 614 can be provided to an associated S / P component 620. The output of S / P component 618 can be provided to DFT component 622 (with DFT length M1), and the output of S / P component 620 can be provided to an associated DFT component 624 (with DFT length M2).
[0098] The outputs of DFT components 622-624 can be provided to subcarrier mapping component 626. In some cases, OFDM waveforms can be used to transmit SSB and DFT-s-OFDM waveforms can be used to transmit CORESET0, and in such cases, PBCH 616 of the OFDM SSB is directly provided to subcarrier mapping component 626.
[0099] As discussed in this paper, in some cases, a common reference signal 628 can be provided across the frequency resources of the SSB and CORESET. Figure 6 In the example, the common reference signal 628 can be a DMRS, and the frequency domain symbols of the reference signal 628 can be inserted into a subset of subcarriers in the subcarrier mapping, wherein the output of the reference signal 628 and the subcarrier mapping component 626 is provided to the IFFT component 630 for IFFT using a length N. The output of the IFFT component 630 can be provided to the P / S component 632, and then to the CP component 634, where CP is added. Thus, CORESET0 612 and PBCH 614 are multiplexed in the frequency domain along with the reference signal 628 and can be provided to the RF component for over-the-air transmission 636 to the receiver 610.
[0100] At receiver 610, multiplexed symbols are received at the RF component, and CP component 638 can remove the CP and provide the resulting symbols to S / P component 640 to convert serial samples into parallel outputs. The output of S / P component 640 can be provided to FFT component 642 for FFT to generate samples associated with each subcarrier. Reference signal output 644 can be measured, and subcarrier samples are provided to subcarrier demapping component 646. The output of subcarrier demapping component 646 is provided to IDFT component 648 for subcarriers mapped to CORESET0 656, and to IDFT component 650 for subcarriers mapped to PBCH 658. The output of IDFT component 648 is provided to P / S component 652 (whose output is CORESET0 656), and the output of IDFT component 650 is provided to P / S component 654 (whose output is PBCH 658). In the case of OFDM waveforms used for SSB, PBCH 660 is output directly from subcarrier demapping component 646. When using OFDM instead of DFT-s-OFDM to transmit CORESET, CORESET0 612 can be directly provided to the subcarrier mapping component 626, and the output CORESET0 656 is provided directly from the subcarrier demapping component 646.
[0101] Figure 7 An example of an architecture 700 supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. In some examples, architecture 700 can use, for example, reference... Figure 3 , 4 Or implement the reuse block discussed in 5. Figure 1 Or 2 aspects of a wireless communication system 100 or 200. In some aspects, architecture 700 includes a transmitter 705 (e.g., base station 105) and a receiver 710 (e.g., UE 115), as described herein.
[0102] It is important to note that there are multiple architectures for wireless transmission and reception, and they provide... Figure 7 For illustrative and discussion purposes only, it is understood that the techniques discussed herein can be implemented using any suitable architecture. Figure 7In this example, transmitter 705 (e.g., a base station) can generate CORESET0 712 and PBCH 714 for transmission in a multiplexed block (e.g., for transmission in an SSCB, where the SSB and CORESET are multiplexed in the symbol set in the frequency domain). In this example, a common reference signal 716 (e.g., DMRS) can be provided as a time-domain symbol along with CORESET0 712 and PBCH 714, and both CORESET0 712 and PBCH 714 are transmitted using DFT-s-OFDM. The first portion of the common reference signal 716-a and CORESET0 712 can be provided to S / P component 718, which converts the time-domain samples into a parallel output. The second portion of the common reference signal 716-a and PBCH 714 can be provided to the associated S / P component 720. The output of S / P component 718 can be provided to DFT component 722 (with DFT length M1), and the output of S / P component 720 can be provided to the associated DFT component 724 (with DFT length M2). The outputs of DFT components 722-724 can be provided to subcarrier mapping component 726. The output of subcarrier mapping component 726 is provided to IFFT component 730 for IFFT using length N. The output of IFFT component 730 can be provided to P / S component 732, and then to CP component 734, where CP is added. Thus, CORESET0 712 and PBCH 714 are multiplexed in the frequency domain along with reference signal 716 and can be provided to RF component for over-the-air transmission 736 to receiver 710.
[0103] At receiver 710, multiplexed symbols are received at the RF component, and CP component 738 can remove the CP and provide the resulting symbols to S / P component 740 to convert serial samples into parallel outputs. The output of S / P component 740 can be provided to FFT component 742 for FFT to generate samples associated with each subcarrier. Subcarrier samples can be provided to subcarrier demapping component 746. The output of subcarrier demapping component 746 is provided to IDFT component 748 for subcarriers mapped to CORESET0 756, and to IDFT component 750 for subcarriers mapped to PBCH 758. The output of IDFT component 748 is provided to P / S component 752, which outputs a first portion 760-a of the reference signal and CORESET0 756, and the output of IDFT component 750 is provided to P / S component 754, which outputs a second portion 760-b of the reference signal and PBCH 758. The reference signal 760 in the time-domain sample can be measured and used for channel estimation and decoding of CORESET0 756 and PBCH 758.
[0104] Figure 8 An example of a process flow 800 supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. Process flow 800 illustrates various aspects of the technology performed by UE 115-b, which can be a reference... Figure 1-2 An example of UE 115 is described. Process flow 800 also illustrates aspects of the technology performed by base station 105-b, which may be a reference. Figure 1-2 An example of base station 105 is described. Process flow 800 can implement various aspects of wireless communication system 100 or 200. For example, UE 115-b and base station 105-b in process flow 800 can support efficient techniques for multiplexing CORESET and SSB transmissions in a symbol set.
[0105] In the following description of process flow 800, operations between UE 115-b and base station 105-b may be transmitted in a different order than the example order shown, or operations performed by base station 105-b and UE 115-b may be performed in a different order or at different times. Some operations may also be omitted from process flow 800, and other operations may be added to process flow 800.
[0106] At 805, base station 105-b can determine the resource allocation and bandwidth for SSCB transmission. In some cases, base station 105-b can determine SSB burst parameters, such as the number of beams and SSBs to be transmitted, which beams will carry SSBs, and the associated PBCH parameters for each SSB (e.g., MIB parameters, such as SCS indication, SSB subcarrier offset, DMRS location, CORESET0 information, and system frame number information). Base station 105-b can also determine the CORESET0 information associated with each beam, such as frequency domain resource allocation (FDRA) and time domain resource allocation (TDRA) identifying resources used for SIB1 PDSCH, virtual resource block (VRB) to physical resource block (PRB) mapping indication (e.g., indicating interleaved or non-interleaved), modulation and coding scheme (MCS), redundancy version (RV) indication, and system information (SI) indicator. In some cases, base station 105-b can determine that the SCS of communication using beams exceeds the SCS threshold (e.g., an SCS at or above 960 kHz) and can initiate the multiplexing of SSB and CORESET into SSCB. In some cases, base station 105-b can allocate resources for SSCB based on SSB frequency domain resources and CORESET frequency domain resources, such that SSCB can include frequency domain multiplexing of SSB and CORESET.
[0107] At 810, base station 105-b can multiplex the first SSB and the first CORESET into a first SSCB. In some cases, base station 105-b can multiplex the first SSB and the first CORESET in contiguous frequency domain resources. In other cases, base station 105-b can multiplex the first SSB and the first CORESET in discontinuous frequency domain resources. The first SSB and the first CORESET can use the same waveform (e.g., OFDM waveform or DFT-s-OFDM waveform), or they can use different waveforms (e.g., the first SSB uses an OFDM waveform, and the first CORESET uses a DFT-s-OFDM waveform). In some cases, base station 105-b can use a common reference signal that spans frequency resources across both the first SSB and the second SSB in the SSCB. In some cases, the common reference signal can be provided in a dedicated symbol of the SSCB. In some cases, the common reference signal can be located in a subset of subcarriers within a symbol of the associated SSCB. In some cases, a common reference signal can be inserted into a subset of time-domain symbols in the time-domain symbol set before the DFT and IFFT of the time-domain symbol set. At 815, base station 105-b can multiplex the second SSB and the second CORESET into a second SSCB in a manner similar to the multiplexing of the first SSCB.
[0108] At 820, base station 105-b can transmit a first SSCB, which can be received at UE 115-b (and one or more other UEs). In some cases, the first SSCB is transmitted using a first beam, and the SSB and CORESET of the first SSCB are associated with the first beam. As discussed herein, the SSB in the first SSCB may include PSS and SSS, as well as a PBCH that can provide MIB information associated with the first beam. Furthermore, the first CORESET in the first SSCB can provide an indication of PDSCH resources that provide system information.
[0109] At 825, base station 105-b can wait for the handover gap to pass. In some cases, a handover gap can be provided to allow the RF components of base station 105-b, the RF components of UE 115-b, or both, to switch from the first beam to the second beam. In some cases, the RF components may have associated handover times, and the handover gap can be selected to provide sufficient time to allow for the handover. In some cases, the handover gap, along with the CP duration, can provide handover time for the RF components. In some cases, a handover gap can be inserted between SSCBs if the SCS exceeds a threshold. In some cases, the duration of the handover gap is determined based on the SCS.
[0110] At 830, UE 115-b can monitor the first SSCB. In some cases, UE 115-b can monitor the PSS and SSS of the SSB and determine the PBCH resources of the first SSB based on the location of the PSS and SSS. When the reference signal of the PBCH is a common reference signal spanning the SSB frequency resources and CORESET resources, the UE can identify the resources of the common reference signal in some cases. In some cases, UE 115-b can identify the following, including the common reference signal: dedicated symbols of the SSCB, a subset of subcarriers within the associated symbols of the SSCB, or a subset of time-domain symbols.
[0111] At 835, base station 105-b can transmit a second SSCB, which can be received at UE 115-b (and one or more other UEs) after a handover interval. In some cases, a second beam is used to transmit the second SSCB, and the SSB and CORESET of the second SSCB are associated with the second beam. At 840, the UE can monitor the second SSCB in a manner similar to monitoring the first SSB. The UE can successfully decode the SSB of at least one of the first or second SSCB.
[0112] At 845, UE 115-b can determine the resource allocation and bandwidth used for SSCB transmission. In some cases, UE 115-b can determine the CORESET band based on a pre-specified CORESET bandwidth. In some cases, the UE can determine the CORESET bandwidth by blindly decoding the common reference signal according to the set of available CORESET bandwidths to identify which bandwidth in the available bandwidth set is used for CORESET transmission. In some cases, UE 115-b can identify the CORESET bandwidth based on synchronization signals in the SSB (e.g., based on the CORESET bandwidth associated with a set of synchronization signal sequences). In some cases, UE 115-b can identify the CORESET bandwidth based on an indication in the SSB, which may be decoded using a portion of the common reference signal that overlaps with the SSB.
[0113] At 850, UE 115-b can estimate the channel associated with each SSB (e.g., PBCH) and CORESET. In some cases, a reference signal transmitted with the SSCB can be used to estimate the channel for both the SSB and CORESET. When a common reference signal is provided in a dedicated symbol of the SSCB, the channel estimation can be based on a frequency-domain equalized reference signal from the dedicated symbol. When the common reference signal is located within a subset of subcarriers within a symbol of the associated SSCB, the channel estimation can be based on the mapped subcarriers carrying the reference signal. When the common reference signal is inserted into a subset of time-domain symbols before the DFT and IFFT of the time-domain symbol set, UE 115-b can extract the common reference signal after the FFT and IDFT and use the common reference signal to perform channel estimation. In some cases, different reference signals are transmitted for the SSB and CORESET within the SSCB, and in such cases, UE 115-b estimates the channel for the PBCH and CORESET separately.
[0114] At 855, UE 115-b can decode the PBCH and CORESET. In some cases, this decoding can be based on a common reference signal spanning the frequency resources of both the PBCH and CORESET. In some cases, UE 115-b can decode the PBCH to identify MIB information and can decode the CORESET to obtain PDSCH resources providing one or more SIBs. Optionally, at 860, UE 115-b can send an access request (e.g., a Random Access Channel (RACH) request message seeking to initiate connection establishment). In some cases, the resources used for the RACH request message can be selected based on which received SSB has the best or acceptable channel conditions.
[0115] Figure 9 A block diagram 900 of a device 905 supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. Device 905 may be an example of various aspects of UE 115 as described herein. Device 905 may include a receiver 910, a transmitter 915, and a communication manager 920. Device 905 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).
[0116] Receiver 910 may provide a unit for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to SSB and CORESET multiplexing in wireless communication). The information may be transmitted to other components of device 905. Receiver 910 may utilize a single antenna or a collection of multiple antennas.
[0117] Transmitter 915 may provide a unit for transmitting signals generated by other components of device 905. For example, transmitter 915 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to SSB and CORESET multiplexing in wireless communication). In some examples, transmitter 915 may be co-located with receiver 910 in a transceiver module. Transmitter 915 may utilize a single antenna or a collection of multiple antennas.
[0118] The communication manager 920, receiver 910, transmitter 915, or various combinations thereof or various components thereof may be examples of units for performing various aspects of SSB and CORESET multiplexing in wireless communications as described herein. For example, the communication manager 920, receiver 910, transmitter 915, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.
[0119] In some examples, the communication manager 920, receiver 910, transmitter 915, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured to or otherwise support units for performing the functions described herein. In some examples, the processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in memory by the processor).
[0120] Alternatively or concurrently, in some examples, the communication manager 920, receiver 910, transmitter 915, or various combinations or components thereof may be implemented using code executed by a processor (e.g., as communication management software or firmware). If implemented using code executed by a processor, the functionality of the communication manager 920, receiver 910, transmitter 915, or various combinations or components thereof may be performed by a general-purpose processor, DSP, central processing unit (CPU), ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., a unit configured or otherwise supported for performing the functions described in this disclosure).
[0121] In some examples, the communication manager 920 can be configured to use or otherwise cooperate with the receiver 910, transmitter 915, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 920 can receive information from the receiver 910, send information to the transmitter 915, or integrate with the receiver 910, transmitter 915, or both to receive information, send information, or perform various other operations as described herein.
[0122] According to the examples disclosed herein, the communication manager 920 can support wireless communication at the UE. For example, the communication manager 920 can be configured or otherwise support units for monitoring a first beam for a first multiplexed block, the first multiplexed block including a first SSB multiplexed with a first CORESET in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix. The communication manager 920 can be configured or otherwise support units for monitoring a second beam for a second multiplexed block after a handover gap following the first multiplexed block, the second multiplexed block including a second SSB multiplexed with a second CORESET in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap. The communication manager 920 can be configured or otherwise support units for decoding one or more of the first or second multiplexed blocks.
[0123] By including or configuring a communication manager 920 according to the examples described herein, device 905 (e.g., a processor that controls or otherwise couples to receiver 910, transmitter 915, communication manager 920, or combinations thereof) can support techniques for multiplexing SSB and CORESET into multiplexed blocks in the frequency domain. Specifically, the techniques described herein can allow a single switching gap between consecutive multiplexed blocks. Therefore, the number of multiple switching gaps between SSB and CORESET transmissions can be reduced, thereby reducing the overhead in systems that use switching gaps for beam switching processes and thus improving system efficiency. Furthermore, the described techniques can provide the flexibility to select different waveforms within multiplexed blocks used for SSB and CORESET transmissions. Alternatively or concurrently, the described techniques can use a common reference signal spanning both SSB and CORESET to provide enhanced channel estimation.
[0124] Figure 10 A block diagram 1000 of a device 1005 supporting SSB and CORESET multiplexing in wireless communication is shown according to various aspects of this disclosure. Device 1005 may be an example of various aspects of device 505 or UE 115 as described herein. Device 1005 may include a receiver 1010, a transmitter 1015, and a communication manager 1020. Device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).
[0125] Receiver 1010 may provide a unit for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to SSB and CORESET multiplexing in wireless communication). The information may be transmitted to other components of device 1005. Receiver 1010 may utilize a single antenna or a collection of multiple antennas.
[0126] Transmitter 1015 may provide a unit for transmitting signals generated by other components of device 1005. For example, transmitter 1015 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to SSB and CORESET multiplexing in wireless communication). In some examples, transmitter 1015 may be co-located with receiver 1010 in a transceiver module. Transmitter 1015 may utilize a single antenna or a collection of multiple antennas.
[0127] Device 1005 or its various components may be examples of units for performing various aspects of SSB and CORESET multiplexing in wireless communications as described herein. For example, communication manager 1020 may include SSCB monitoring manager 1025, decoder 1030, or any combination thereof. Communication manager 1020 may be examples of various aspects of communication manager 920 as described herein. In some examples, communication manager 1020 or its various components may be configured to use receiver 1010, transmitter 1015, or both, or otherwise cooperate with receiver 1010, transmitter 1015, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, communication manager 1020 may receive information from receiver 1010, transmit information to transmitter 1015, or be integrated with receiver 1010, transmitter 1015, or both to receive information, transmit information, or perform various other operations as described herein.
[0128] According to the examples disclosed herein, the communication manager 1020 can support wireless communication at the UE. The SSCB monitoring manager 1025 can be configured or otherwise supported to support units for monitoring a first beam for a first multiplexed block, the first multiplexed block including a first SSB multiplexed with a first CORESET in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix. The SSCB monitoring manager 1025 can be configured or otherwise supported to support units for monitoring a second beam for a second multiplexed block after a handover gap following the first multiplexed block, the second multiplexed block including a second SSB multiplexed with a second CORESET in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap. The decoder 1030 can be configured or otherwise supported to support units for decoding one or more of the first or second multiplexed blocks.
[0129] Figure 11A block diagram 1100 of a communication manager 1120 supporting SSB and CORESET multiplexing in wireless communication is shown according to various aspects of this disclosure. Communication manager 1120 may be an example of a communication manager 920, communication manager 1020, or aspects of both as described herein. Communication manager 1120 or its various components may be examples of units for performing various aspects of SSB and CORESET multiplexing in wireless communication as described herein. For example, communication manager 1120 may include an SSCB monitoring manager 1125, a decoder 1130, a resource allocation manager 1135, a channel estimation manager 1140, a subcarrier mapping manager 1145, an IDFT manager 1150, a reference signal manager 1155, a bandwidth determination manager 1160, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).
[0130] According to the examples disclosed herein, the communication manager 1120 may support wireless communication at the UE. The SSCB monitoring manager 1125 may be configured or otherwise support units for monitoring a first beam for a first multiplexed block, the first multiplexed block including a first SSB multiplexed with a first CORESET in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix. In some examples, the SSCB monitoring manager 1125 may be configured or otherwise support units for monitoring a second beam for a second multiplexed block after a handover gap following the first multiplexed block, the second multiplexed block including a second SSB multiplexed with a second CORESET in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap. The decoder 1130 may be configured or otherwise support units for decoding one or more of the first or second multiplexed blocks.
[0131] In some examples, the first SSB is transmitted using a first waveform, and the first CORESET is transmitted using a second waveform, which is different from the first waveform. In some examples, the first waveform is an Orthogonal Frequency Division Multiplexing (OFDM) waveform or a Discrete Fourier Transform Extended OFDM (DFT-s-OFDM) waveform, and the second waveform is an OFDM waveform or a DFT-s-OFDM waveform.
[0132] In some examples, the resource allocation manager 1135 may be configured or otherwise supported to determine one or more of the frequency allocation, bandwidth, or duration of the first CORESET based on one or more predetermined values or indications provided in an information block within the first SSB. In some examples, each of the first SSB and the first CORESET, as well as each of the second SSB and the second CORESET, are multiplexed with consecutive frequency domain allocations.
[0133] In some examples, the channel estimation manager 1140 may be configured or otherwise support elements for estimating the channels associated with the first SSB and the first CORESET based on a first reference signal included in the first multiplexing block, wherein the first reference signal spans the frequency resources associated with the first SSB and the first CORESET. In some examples, the first reference signal spans a fixed frequency bandwidth associated with the first multiplexing block.
[0134] In some examples, the reference signal manager 1155 may be configured or otherwise supported for blind decoding of two or more frequency bandwidth candidates within the first multiplexing block to identify the frequency bandwidth of the first reference signal. In some examples, the reference signal manager 1155 may be configured or otherwise supported for identifying the frequency bandwidth containing the first reference signal based on an indication provided by a synchronization signal within the first SSB.
[0135] In some examples, to support estimation, the channel estimation manager 1140 may be configured or otherwise support elements for estimating the channel associated with the first SSB based on a first portion of the first frequency bandwidth associated with the first SSB across the first reference signal. In some examples, to support estimation, the bandwidth determination manager 1160 may be configured or otherwise support elements for determining a second frequency bandwidth associated with the first CORESET based at least in part on information from the first SSB. In some examples, to support estimation, the channel estimation manager 1140 may be configured or otherwise support elements for estimating the channel associated with the first CORESET based on a second portion of the second frequency bandwidth across the first reference signal.
[0136] In some examples, the channel estimation manager 1140 may be configured or otherwise support units for estimating a first channel associated with the first SSB based on a first reference signal in a first frequency bandwidth associated with the first SSB. In some examples, the channel estimation manager 1140 may be configured or otherwise support units for estimating a second channel associated with the first CORESET based on a second reference signal in a second frequency bandwidth associated with the first CORESET. In some examples, the channel estimation manager 1140 may be configured or otherwise support units for estimating a channel associated with each multiplex block based on reference signals in dedicated DFT-s-ODFM symbols within the associated multiplex block.
[0137] In some examples, the subcarrier mapping manager 1145 may be configured or otherwise support the estimation of the channel associated with each multiplex block based on reference signals in a subset of subcarriers located within the symbols of the associated multiplex block.
[0138] In some examples, the IDFT manager 1150 can be configured or otherwise support the estimation of the channel associated with each multiplex block based on a reference signal located in a subset of time-domain symbols in a time-domain symbol set generated after a Fast Fourier Transform (FFT) and an Inverse Discrete Fourier Transform of one or more received symbols of the associated multiplex block.
[0139] Figure 12 A schematic diagram of a system 1200 including device 1205 supporting SSB and CORESET multiplexing in wireless communication is shown according to various aspects of this disclosure. Device 1205 may be an example of device 905, device 1005, or UE 115 as described herein, or include components thereof. Device 1205 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1205 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 1220, an input / output (I / O) controller 1210, a transceiver 1215, an antenna 1225, a memory 1230, a code 1235, and a processor 1240. These components may communicate electronically or be coupled in other ways (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1245).
[0140] I / O controller 1210 can manage input and output signals for device 1205. I / O controller 1210 can also manage peripheral devices not integrated into device 1205. In some cases, I / O controller 1210 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1210 can utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. Alternatively or concurrently, I / O controller 1210 can represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, I / O controller 1210 can be implemented as part of a processor (such as processor 1240). In some cases, a user can interact with device 1205 via I / O controller 1210 or via hardware components controlled by I / O controller 1210.
[0141] In some cases, device 1205 may include a single antenna 1225. However, in other cases, device 1205 may have more than one antenna 1225, which are capable of simultaneously transmitting or receiving multiple wireless transmissions. Transceiver 1215 may communicate bidirectionally via one or more antennas 1225 as described herein, or via a wired or wireless link. For example, transceiver 1215 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 1215 may also include a modem for modulating packets, providing modulated packets to one or more antennas 1225 for transmission, and demodulating packets received from one or more antennas 1225. Transceiver 1215, or transceiver 1215 and one or more antennas 1225, may be an example of transmitter 915, transmitter 1015, receiver 910, receiver 1010, or any combination thereof or components thereof as described herein.
[0142] Memory 1230 may include random access memory (RAM) and read-only memory (ROM). Memory 1230 may store computer-readable, computer-executable code 1235, which includes instructions that, when executed by processor 1240, cause device 1205 to perform the various functions described herein. Code 1235 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 1235 may not be directly executable by processor 1240, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, in addition, memory 1230 may also include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.
[0143] Processor 1240 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1240 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1240. Processor 1240 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1230) to cause device 1205 to perform various functions (e.g., functions or tasks supporting SSB and CORESET multiplexing in wireless communications). For example, device 1205 or components of device 1205 may include processor 1240 and memory 1230 coupled to processor 1240, processor 1240 and memory 1230 being configured to perform the various functions described herein.
[0144] According to the examples disclosed herein, the communication manager 1220 can support wireless communication at the UE. For example, the communication manager 1220 can be configured or otherwise support units for monitoring a first beam for a first multiplexed block, the first multiplexed block including a first SSB multiplexed with a first CORESET in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix. The communication manager 1220 can be configured or otherwise support units for monitoring a second beam for a second multiplexed block after a handover gap following the first multiplexed block, the second multiplexed block including a second SSB multiplexed with a second CORESET in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap. The communication manager 1220 can be configured or otherwise support units for decoding one or more of the first or second multiplexed blocks.
[0145] By including or configuring the communication manager 1220 according to the examples described herein, device 1205 can support techniques for multiplexing SSB and CORESET into multiplexed blocks in the frequency domain. Specifically, the techniques described herein can allow a single switching gap between consecutive multiplexed blocks, which can reduce the overhead in a system that uses switching gaps for beam switching processes between consecutive SSB and CORESET, and thereby enhance system efficiency. Furthermore, the described techniques can provide the flexibility to select different waveforms within multiplexed blocks used for SSB and CORESET transmissions. Alternatively or concurrently, the described techniques can use a common reference signal spanning both SSB and CORESET to provide enhanced channel estimation.
[0146] In some examples, the communication manager 1220 may be configured to perform various operations (e.g., receive, monitor, transmit) using or in cooperation with transceiver 1215, one or more antennas 1225, or any combination thereof. Although the communication manager 1220 is shown as a separate component, in some examples, one or more functions described with reference to the communication manager 1220 may be supported or performed by processor 1240, memory 1230, code 1235, or any combination thereof. For example, code 1235 may include instructions executable by processor 1240 to cause device 1205 to perform various aspects of SSB and CORESET multiplexing in wireless communications as described herein, or processor 1240 and memory 1230 may be otherwise configured to perform or support such operations.
[0147] Figure 13 A block diagram 1300 of a device 1305 supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. Device 1305 may be an example of various aspects of base station 105 as described herein. Device 1305 may include a receiver 1310, a transmitter 1315, and a communication manager 1320. Device 1305 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).
[0148] Receiver 1310 may provide a unit for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to SSB and CORESET multiplexing in wireless communication). Information may be passed to other components of device 1305. Receiver 1310 may utilize a single antenna or a collection of multiple antennas.
[0149] Transmitter 1315 may provide a unit for transmitting signals generated by other components of device 1305. For example, transmitter 1315 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels associated with SSB and CORESET multiplexing in wireless communication). In some examples, transmitter 1315 may be co-located with receiver 1310 in a transceiver module. Transmitter 1315 may utilize a single antenna or a collection of multiple antennas.
[0150] The communication manager 1320, receiver 1310, transmitter 1315, or various combinations thereof, or various components thereof, may be examples of units for performing various aspects of SSB and CORESET multiplexing in the wireless communications described herein. For example, the communication manager 1320, receiver 1310, transmitter 1315, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.
[0151] In some examples, the communication manager 1320, receiver 1310, transmitter 1315, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured to or otherwise support units for performing the functions described herein. In some examples, the processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in memory by the processor).
[0152] Alternatively or concurrently, in some examples, the communication manager 1320, receiver 1310, transmitter 1315, or various combinations or components thereof, may be implemented using code executed by a processor (e.g., as communication management software or firmware). If implemented using processor-executed code, the functionality of the communication manager 1320, receiver 1310, transmitter 1315, or various combinations or components thereof may be performed by a general-purpose processor, DSP, CPU, ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., a unit configured or otherwise supported for performing the functions described in this disclosure).
[0153] In some examples, the communication manager 1320 may be configured to use or otherwise cooperate with the receiver 1310, transmitter 1315, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 1320 may receive information from the receiver 1310, send information to the transmitter 1315, or integrate with the receiver 1310, transmitter 1315, or both to receive information, send information, or perform various other operations as described herein.
[0154] According to the examples disclosed herein, the communication manager 1320 can support wireless communication at a base station. For example, the communication manager 1320 can be configured or otherwise supported to support elements for multiplexing a first SSB and a first CORESET into a first multiplexed block in the frequency domain for a first beam, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix. The communication manager 1320 can be configured or otherwise supported to support elements for multiplexing a second SSB and a second CORESET into a second multiplexed block in the frequency domain for a second beam, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix. The communication manager 1320 can be configured or otherwise supported to support elements for transmitting the first multiplexed block in the first set of symbols. The communication manager 1320 can be configured or otherwise supported to support elements for transmitting a second multiplexed block in the second set of symbols after a handover gap following the first set of symbols, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap.
[0155] By including or configuring the communication manager 1320 according to the examples described herein, device 1305 (e.g., a processor that controls or otherwise couples to receiver 1310, transmitter 1315, communication manager 1320, or a combination thereof) can support techniques for multiplexing SSB and CORESET into multiplexed blocks in the frequency domain. Specifically, the techniques described herein can allow a single switching gap between consecutive multiplexed blocks, which provides a more efficient use of communication resources compared to situations where multiple switching gaps can exist between SSB and CORESET transmissions. Furthermore, the described techniques can provide the flexibility to select different waveforms within multiplexed blocks used for SSB and CORESET transmissions. Alternatively or concurrently, the described techniques can use a common reference signal spanning both SSB and CORESET to provide enhanced channel estimation.
[0156] Figure 14A block diagram 1400 of a device 1405 supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. Device 1405 may be an example of various aspects of device 1305 or base station 105 as described herein. Device 1405 may include a receiver 1410, a transmitter 1415, and a communication manager 1420. Device 1405 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).
[0157] Receiver 1410 may provide a unit for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to SSB and CORESET multiplexing in wireless communication). Information may be passed to other components of device 1405. Receiver 1410 may utilize a single antenna or a collection of multiple antennas.
[0158] Transmitter 1415 may provide a unit for transmitting signals generated by other components of device 1405. For example, transmitter 1415 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels associated with SSB and CORESET multiplexing in wireless communication). In some examples, transmitter 1415 may be co-located with receiver 1410 in a transceiver module. Transmitter 1415 may utilize a single antenna or a collection of multiple antennas.
[0159] Device 1405 or its various components may be examples of units for performing various aspects of SSB and CORESET multiplexing in wireless communications as described herein. For example, communication manager 1420 may include SSCB multiplexing manager 1425 and SSCB transmission manager 1430 or any combination thereof. Communication manager 1420 may be examples of various aspects of communication manager 1320 as described herein. In some examples, communication manager 1420 or its various components may be configured to use receiver 1410, transmitter 1415 or both, or otherwise cooperate with receiver 1410, transmitter 1415 or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, communication manager 1420 may receive information from receiver 1410, transmit information to transmitter 1415, or be integrated with receiver 1410, transmitter 1415 or both in combination to receive information, transmit information, or perform various other operations as described herein.
[0160] According to the examples disclosed herein, the communication manager 1420 can support wireless communication at a base station. The SSCB multiplexing manager 1425 can be configured or otherwise supported to support units for multiplexing a first SSB and a first CORESET into a first multiplexed block in the frequency domain for a first beam, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix. The SSCB multiplexing manager 1425 can be configured or otherwise supported to support units for multiplexing a second SSB and a second CORESET into a second multiplexed block in the frequency domain for a second beam, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix. The SSCB transmission manager 1430 can be configured or otherwise supported to support units for transmitting the first multiplexed block in the first set of symbols. The SSCB transmission manager 1430 can be configured or otherwise supported to support units for transmitting a second multiplexed block in the second set of symbols after a handover gap following the first set of symbols, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap.
[0161] Figure 15 A block diagram 1500 is shown of a communication manager 1520 supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure. Communication manager 1520 may be an example of aspects of communication manager 1320, communication manager 1420, or both as described herein. Communication manager 1520 or its various components may be examples of units for performing various aspects of SSB and CORESET multiplexing in wireless communication as described herein. For example, communication manager 1520 may include an SSCB multiplexing manager 1525, an SSCB transmission manager 1530, a resource allocation manager 1535, a reference signal manager 1540, a subcarrier mapping manager 1545, a DFT manager 1550, a bandwidth selection manager 1555, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).
[0162] According to the examples disclosed herein, the communication manager 1520 can support wireless communication at a base station. The SSCB multiplexing manager 1525 can be configured or otherwise supported to support units for multiplexing a first SSB and a first CORESET into a first multiplexed block in the frequency domain for a first beam, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix. In some examples, the SSCB multiplexing manager 1525 can be configured or otherwise supported to support units for multiplexing a second SSB and a second CORESET into a second multiplexed block in the frequency domain for a second beam, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix. The SSCB transmission manager 1530 can be configured or otherwise supported to support units for transmitting the first multiplexed block in the first set of symbols. In some examples, the SSCB transmission manager 1530 can be configured or otherwise supported to support units for transmitting a second multiplexed block in the second set of symbols after a handover gap following the first set of symbols, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap.
[0163] In some examples, the first SSB is transmitted using a first waveform, and the first CORESET is transmitted using a second waveform, which is a different waveform from the first waveform. The first waveform is an orthogonal frequency division multiplexing (OFDM) waveform or a DFT-s-OFDM waveform, and the second waveform is an OFDM waveform or a DFT-s-OFDM waveform.
[0164] In some examples, the SSCB multiplexing manager 1525 may be configured or otherwise support units for determining one or more of the frequency allocation, bandwidth, or duration of the first CORESET based on one or more predetermined values or indications provided in an information block within the first SSB, wherein the associated SSB and CORESET in each associated multiplexing block are multiplexed with consecutive frequency domain allocations.
[0165] In some examples, to support the transmission of the first multiplexed block, the resource allocation manager 1535 may be configured or otherwise support units for transmitting a first reference signal in the first multiplexed block, wherein the first reference signal spans frequency resources associated with the first SSB and the first CORESET. In some examples, the first reference signal spans a fixed frequency bandwidth associated with the first multiplexed block.
[0166] In some examples, the bandwidth selection manager 1555 may be configured or otherwise supported to include a unit for selecting a frequency bandwidth for the first reference signal from two or more blind decoding frequency bandwidth candidates within the first multiplexing block. In some examples, the bandwidth selection manager 1555 may be configured or otherwise supported to include a unit for selecting a frequency bandwidth for the first reference signal from two or more available frequency bandwidths within the first multiplexing block. In some examples, the bandwidth selection manager 1555 may be configured or otherwise supported to include a unit for transmitting an indication of the frequency bandwidth for the first reference signal in a synchronization signal within the first SSB.
[0167] In some examples, to support the transmission of the first multiplexed block, the reference signal manager 1540 may be configured or otherwise support units for transmitting a first reference signal in a first frequency bandwidth associated with the first SSB. In some examples, to support the transmission of the first multiplexed block, the reference signal manager 1540 may be configured or otherwise support units for transmitting a second reference signal in a second frequency bandwidth associated with the first CORESET.
[0168] In some examples, the reference signal manager 1540 may be configured or otherwise support units for transmitting reference signals in each multiplex block, wherein the reference signals are transmitted. In some examples, the reference signal manager 1540 may be configured or otherwise support units for dedicated DFT-s-ODFM symbols within an associated multiplex block. In some examples, the subcarrier mapping manager 1545 may be configured or otherwise support units for a subset of subcarriers within one or more symbols of an associated multiplex block. In some examples, the DFT manager 1550 may be configured or otherwise support units for inserting a subset of time-domain symbols into the time-domain symbol set prior to the discrete Fourier transform of the associated multiplex block.
[0169] Figure 16A schematic diagram of a system 1600 including device 1605 supporting SSB and CORESET multiplexing in wireless communication is shown according to various aspects of this disclosure. Device 1605 may be an example of device 1305, device 1405, or base station 105 as described herein, or include components thereof. Device 1605 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1605 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 1620, a network communication manager 1610, a transceiver 1615, an antenna 1625, a memory 1630, a code 1635, a processor 1640, and an inter-station communication manager 1645. These components may communicate electronically or be coupled in other ways (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1650).
[0170] The network communication manager 1610 can manage communication with the core network 130 (e.g., via one or more wired backhaul links). For example, the network communication manager 1610 can manage the transmission of data communication to client devices (e.g., one or more UEs 115).
[0171] In some cases, device 1605 may include a single antenna 1625. However, in other cases, device 1605 may have more than one antenna 1625, which are capable of transmitting or receiving multiple wireless transmissions simultaneously. Transceiver 1615 may communicate bidirectionally via one or more antennas 1625, wired or wireless links as described herein. For example, transceiver 1615 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 1615 may also include a modem for modulating packets, providing modulated packets to one or more antennas 1625 for transmission, and demodulating packets received from one or more antennas 1625. Transceiver 1615, or transceiver 1615 and one or more antennas 1625, may be an example of transmitter 1315, transmitter 1415, receiver 1310, receiver 1410, or any combination thereof or components thereof as described herein.
[0172] Memory 1630 may include RAM and ROM. Memory 1630 may store computer-readable, computer-executable code 1635, which includes instructions that, when executed by processor 1640, cause device 1605 to perform the various functions described herein. Code 1635 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 1635 may not be directly executable by processor 1640, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some additional cases, memory 1630 may also contain a BIOS, which controls basic hardware or software operations, such as interaction with peripheral components or devices.
[0173] Processor 1640 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1640 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1640. Processor 1640 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1630) to cause device 1605 to perform various functions (e.g., functions or tasks supporting SSB and CORESET multiplexing in wireless communications). For example, device 1605 or components of device 1605 may include processor 1640 and memory 1630 coupled to processor 1640, processor 1640 and memory 1630 being configured to perform the various functions described herein.
[0174] Inter-site communication manager 1645 can manage communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with UE 115. For example, inter-site communication manager 1645 can coordinate the scheduling of transmissions to UE 115 to implement various interference mitigation techniques such as beamforming or joint transmission. In some examples, inter-site communication manager 1645 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between base stations 105.
[0175] According to the examples disclosed herein, the communication manager 1620 can support wireless communication at a base station. For example, the communication manager 1620 can be configured or otherwise supported to support units for multiplexing a first SSB and a first CORESET into a first multiplexed block for a first beam in the frequency domain, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix. The communication manager 1620 can be configured or otherwise supported to support units for multiplexing a second SSB and a second CORESET into a second multiplexed block for a second beam in the frequency domain, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix. The communication manager 1620 can be configured or otherwise supported to support units for transmitting the first multiplexed block in the first set of symbols. The communication manager 1620 can be configured or otherwise supported to support units for transmitting a second multiplexed block in the second set of symbols after a handover gap following the first set of symbols, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the handover gap.
[0176] By including or configuring the communication manager 1620 according to the examples described herein, device 1605 can support techniques for multiplexing SSB and CORESET into multiplexed blocks in the frequency domain. Specifically, the techniques described herein can allow a single switching gap between consecutive multiplexed blocks. Therefore, multiple switching gaps between SSB and CORESET transmissions can be reduced, thereby reducing overhead in systems that use switching gaps for beam switching processes and thus improving system efficiency. Furthermore, the described techniques can provide the flexibility to select different waveforms within multiplexed blocks used for SSB and CORESET transmissions. Alternatively or concurrently, the described techniques can use a common reference signal spanning both SSB and CORESET to provide enhanced channel estimation.
[0177] In some examples, the communication manager 1620 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or in cooperation with transceiver 1615, one or more antennas 1625, or any combination thereof. Although the communication manager 1620 is shown as a separate component, in some examples, one or more functions described with reference to the communication manager 1620 may be supported or performed by processor 1640, memory 1630, code 1635, or any combination thereof. For example, code 1635 may include instructions executable by processor 1640 to cause device 1605 to perform various aspects of SSB and CORESET multiplexing in wireless communications as described herein, or processor 1640 and memory 1630 may be otherwise configured to perform or support such operations.
[0178] Figure 17A flowchart illustrating method 1700 for supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. Operation of method 1700 can be implemented by a UE or its components as described herein. For example, operation of method 1700 can be implemented by, as referenced... Figures 1 to 12 The UE 115 described is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional units of the UE to perform the described function. Alternatively, the UE can use dedicated hardware to perform aspects of the described function.
[0179] At 1705, the method may include: monitoring a first beam for a first multiplexed block, the first multiplexed block including a first SSB multiplexed with a first CORESET in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix. The operation of 1705 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1705 may be derived from references... Figure 11 The SSCB monitoring manager 1125 described is used to perform this.
[0180] At 1710, the method may include: monitoring a second beam for a second multiplexed block following a switching gap after the first multiplexed block, the second multiplexed block including a second SSB multiplexed with a second CORESET in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein the initial cyclic prefix of the initial symbols of the second multiplexed block begins after the switching gap. The operation of 1710 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1710 may be derived from references... Figure 11 The SSCB monitoring manager 1125 described is used to perform this.
[0181] Optionally, at 1715, the method may include: determining one or more of the frequency allocation, bandwidth, or duration of at least the first CORESET based on one or more predetermined values or indications provided in an information block within the first SSB. The operation of 1715 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1715 may be determined by reference to... Figure 11 The resource allocation manager 1135 described is used to execute this.
[0182] At 1720, the method may include decoding one or more of the first multiplexed block or the second multiplexed block. The operation at 1720 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1720 may be derived from, as referenced... Figure 11 The decoder 1130 described is used for execution.
[0183] Figure 18A flowchart illustrating method 1800 for supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. Operation of method 1800 can be implemented by a UE or its components as described herein. For example, operation of method 1800 can be implemented by, as referred to... Figures 1 to 12 The UE 115 described is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional units of the UE to perform the described function. Alternatively, the UE can use dedicated hardware to perform aspects of the described function.
[0184] At 1805, the method may include: monitoring a first beam for a first multiplexed block, the first multiplexed block including a first SSB multiplexed with a first CORESET in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix. The operation at 1805 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1805 may be derived from references... Figure 11 The SSCB monitoring manager 1125 described is used to perform this.
[0185] At 1810, the method may include: monitoring a second beam for a second multiplexed block, following a switching gap after the first multiplexed block, the second multiplexed block including a second SSB multiplexed with a second CORESET in the frequency domain. The operation of 1810 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1810 may be provided by reference to... Figure 11 The SSCB monitoring manager 1125 described herein is used for execution. In some cases, the second multiplex block comprises a second set of symbols, each having an associated cyclic prefix, and the initial cyclic prefix of the initial symbol of the second multiplex block begins after the switching gap.
[0186] Optionally, at 1815, the method may include: identifying a frequency bandwidth containing a reference signal associated with each multiplexing block. The operation at 1815 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1815 may be determined by, as referenced... Figure 11 The decoder 1130 described herein performs this function. In some cases, the frequency bandwidth may be identified at least in part based on an indication provided by a synchronization signal within the first SSB or the second SSB. In some cases, the frequency bandwidth may be a predetermined frequency bandwidth.
[0187] Alternatively, at 1820, the method may include: blindly decoding two or more frequency bandwidth candidates within each multiplexing block to identify the frequency bandwidth of the associated reference signal. The operation at 1820 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1820 may be determined by reference to... Figure 11The reference signal manager 1155 described herein performs the operation. In some cases, two or more frequency bandwidth candidates may be a predetermined set of frequency bandwidth candidates associated with a first CORESET and a second CORESET. In some cases, blind decoding may include decoding the expected reference signal based on the frequency bandwidth candidates and which of the frequency bandwidth candidates provides the expected reference signal sequence.
[0188] At 1825, the method may include: estimating the channel associated with each SSB and CORESET based on the associated reference signal. The operation at 1830 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1830 may be determined by reference... Figure 11 The channel estimation manager 1140 described herein performs this function. In some cases, the reference signal associated with each multiplex block spans the frequency resources associated with the associated SSB and CORESET. In some cases, the channel associated with each multiplex block may be estimated based on the reference signal in a dedicated DFT-s-ODFM symbol within the associated multiplex block. In some cases, the channel associated with each multiplex block may be estimated based on the reference signal in a subset of subcarriers located within the symbols of the associated multiplex block. In some cases, the channel associated with each multiplex block may be estimated based on the reference signal in a subset of time-domain symbols located in a time-domain symbol set generated after the FFT and IDFT of one or more received symbols of the associated multiplex block.
[0189] At 1830, the method may include: decoding the multiplexed block at least in part based on the estimated channel. The operation at 1830 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1830 may be derived from, as referenced... Figure 11 The decoder 1130 described is used for execution.
[0190] Figure 19 A flowchart illustrating method 1900 for supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. Operation of method 1900 can be implemented by a base station or its components as described herein. For example, operation of method 1900 can be implemented by, as referred to... Figures 1 to 8 And the base station 105 described in 13 to 16 performs this function. In some examples, the base station may execute a set of instructions to control the functional units of the base station to perform the described functions. Alternatively, the base station may use dedicated hardware to perform aspects of the described functions.
[0191] Optionally, at 1905, the method may include: determining one or more of the frequency allocation, bandwidth, or duration of a plurality of CORESETs associated with a plurality of beams and SSBs. The operation at 1905 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1905 may be determined by reference to... Figure 15 The SSCB multiplexing manager 1525 described herein performs this action. In some cases, such determination may be based on one or more predetermined values or indications provided in an information block within the first SSB. In some cases, multiple SSBs and CORESETs may each be associated with a multiplexing block, wherein the multiple multiplexing blocks are multiplexed in a continuous frequency domain allocation.
[0192] At 1910, the method may include: multiplexing a first SSB and a first CORESET into a first multiplexed block for a first beam in a continuous frequency domain allocation, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix. The operation of 1910 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1910 may be derived from references... Figure 15 The SSCB multiplexing manager 1525 is described and executed.
[0193] At 1915, the method may include: multiplexing the second SSB and the second CORESET into a second multiplexed block for the second beam in a continuous frequency domain allocation, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix. The operation of 1915 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1915 may be derived from references... Figure 15 The SSCB multiplexing manager 1525 is described and executed.
[0194] At 1920, the method may include: transmitting a first multiplexed block in a first symbol set. The operation of 1920 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1920 may be derived from, as referenced... Figure 15 The SSCB Transfer Manager 1530 described is used for execution.
[0195] At 1925, the method may include: transmitting a second multiplexed block in a second symbol set after a switching gap following the first symbol set, wherein the initial cyclic prefix of the initial symbol of the second multiplexed block begins after the switching gap. The operation of 1925 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1925 may be derived from references... Figure 15 The SSCB Transfer Manager 1530 described is used for execution.
[0196] Figure 20A flowchart illustrating a method 2000 for supporting SSB and CORESET multiplexing in wireless communication according to various aspects of this disclosure is shown. Operation of method 2000 can be implemented by a base station or its components as described herein. For example, operation of method 2000 can be implemented by, as referred to... Figures 1 to 8 And the base station 105 described in 13 to 16 performs this function. In some examples, the base station may execute a set of instructions to control the functional units of the base station to perform the described functions. Alternatively, the base station may use dedicated hardware to perform aspects of the described functions.
[0197] At 2005, the method may include: multiplexing a first SSB and a first CORESET into a first multiplexed block in the frequency domain for a first beam, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix. The operation of 2005 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2005 may be derived from references... Figure 15 The described SSCB multiplexing manager 1525 performs this function. In some cases, a first reference signal may be transmitted within a first multiplexing block. In some cases, the first reference signal spans frequency resources associated with a first SSB and a first CORESET. In some cases, a frequency bandwidth for the first reference signal may be selected from two or more available frequency bandwidths within the first multiplexing block. In some cases, an indication of the frequency bandwidth for the first reference signal may be provided in a synchronization signal within the first SSB. In some cases, the reference signal may be transmitted as: a dedicated DFT-s-ODFM symbol within the associated multiplexing block, a subset of subcarriers within one or more symbols of the associated multiplexing block, or a subset of time-domain symbols inserted into the time-domain symbol set before the DFT of the associated multiplexing block.
[0198] At 2010, the method may include: transmitting a first multiplexed block in a first symbol set. The operation of 2010 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2010 may be determined by reference to... Figure 15 The SSCB Transfer Manager 1530 described is used for execution.
[0199] At 2015, the method may include: multiplexing a second SSB and a second CORESET into a second multiplexed block in the frequency domain for a second beam, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix. The operation of 2025 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2025 may be provided as referenced. Figure 15 The SSCB multiplexing manager 1525 is described and executed.
[0200] At 2020, the method may include: transmitting a second multiplexed block in a second symbol set after a switching gap following a first symbol set, wherein the initial cyclic prefix of the initial symbol of the second multiplexed block begins after the switching gap. The operation of 2035 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2035 may be derived from references to... Figure 15 The SSCB Transfer Manager 1530 described is used for execution.
[0201] The following provides an overview of various aspects of this disclosure:
[0202] Aspect 1: A method for wireless communication at a UE, comprising: monitoring a first beam for a first multiplexed block, the first multiplexed block including a first synchronization signal block multiplexed with a first control resource set in the frequency domain, the first multiplexed block including a first set of symbols each having an associated cyclic prefix; monitoring a second beam for a second multiplexed block after a handover gap following the first multiplexed block, the second multiplexed block including a second synchronization signal block multiplexed with a second control resource set in the frequency domain, the second multiplexed block including a second set of symbols each having an associated cyclic prefix, wherein an initial cyclic prefix of an initial symbol of the second multiplexed block begins after the handover gap; and decoding one or more of the first multiplexed block or the second multiplexed block.
[0203] Aspect 2: According to the method of aspect 1, wherein the first synchronization signal block is transmitted using a first waveform, and the first control resource set is transmitted using a second waveform, the second waveform being a waveform different from the first waveform.
[0204] Aspect 3: According to the method of aspect 2, wherein the first waveform is an OFDM waveform or a DFT-s-OFDM waveform, and the second waveform is an OFDM waveform or a DFT-s-OFDM waveform.
[0205] Aspect 4: The method according to any one of Aspects 1 to 3 further includes: determining one or more of the frequency allocation, bandwidth, or duration of the first control resource set based at least in part on one or more predetermined values or indications provided in an information block within the first synchronization signal block.
[0206] Aspect 5: The method according to any one of Aspects 1 to 4, wherein each of the first synchronization signal block and the first control resource set, and each of the second synchronization signal block and the second control resource set, is multiplexed by continuous frequency domain allocation.
[0207] Aspect 6: The method according to any one of Aspects 1 to 5 further includes: estimating a channel associated with the first synchronization signal block and the first control resource set based at least in part on a first reference signal included in the first multiplexing block, wherein the first reference signal spans frequency resources associated with the first synchronization signal block and the first control resource set.
[0208] Aspect 7: According to the method of aspect 6, wherein the first reference signal spans a fixed frequency bandwidth associated with the first multiplexing block.
[0209] Aspect 8: The method according to aspect 6 further includes: blindly decoding two or more frequency bandwidth candidates within the first multiplexing block to identify the frequency bandwidth of the first reference signal.
[0210] Aspect 9: The method according to aspect 6 further includes: identifying the frequency bandwidth containing the first reference signal based at least in part on an indication provided by a synchronization signal within the first synchronization signal block.
[0211] Aspect 10: The method according to aspect 6, wherein the estimation comprises: estimating the channel associated with the first synchronization signal block based on a first portion of the first reference signal spanning a first frequency bandwidth associated with the first synchronization signal block; determining a second frequency bandwidth associated with the first control resource set based at least in part on information from the first synchronization signal block; and estimating the channel associated with the first control resource set based at least in part on a second portion of the first reference signal spanning the second frequency bandwidth.
[0212] Aspect 11: The method according to aspect 1 further includes: estimating a first channel associated with the first synchronization signal block based at least in part on a first reference signal in a first frequency bandwidth associated with the first synchronization signal block; and estimating a second channel associated with the first control resource set based at least in part on a second reference signal in a second frequency bandwidth associated with the first control resource set.
[0213] Aspect 12: The method according to any one of aspects 1 to 11 further includes: estimating the channel associated with each multiplex block based at least in part on the reference signal in the dedicated DFT-s-ODFM symbol within the associated multiplex block.
[0214] Aspect 13: The method according to any one of aspects 1 to 11 further includes: estimating the channel associated with each multiplex block based at least in part on a reference signal in a subset of subcarriers located within the symbols of the associated multiplex block.
[0215] Aspect 14: The method according to any one of Aspects 1 to 11 further comprises: estimating the channel associated with each multiplex block based at least in part on reference signals located in a subset of time-domain symbols of a time-domain symbol set, said time-domain symbol set being generated after FFT and IDFT of one or more received symbols of the associated multiplex block.
[0216] Aspect 15: A method for wireless communication at a base station, comprising: multiplexing a first synchronization signal block and a first control resource set into a first multiplexed block in the frequency domain for a first beam, the first multiplexed block comprising a first set of symbols each having an associated cyclic prefix; multiplexing a second synchronization signal block and a second control resource set into a second multiplexed block in the frequency domain for a second beam, the second multiplexed block comprising a second set of symbols each having an associated cyclic prefix; transmitting the first multiplexed block in the first set of symbols; and transmitting the second multiplexed block in the second set of symbols after a handover gap following the first set of symbols, wherein an initial cyclic prefix of an initial symbol of the second multiplexed block begins after the handover gap.
[0217] Aspect 16: The method according to aspect 15, wherein the first synchronization signal block is transmitted using a first waveform, and the first control resource set is transmitted using a second waveform, the second waveform being a waveform different from the first waveform, and wherein the first waveform is an OFDM waveform or a DFT-s-OFDM waveform, and the second waveform is an OFDM waveform or a DFT-s-OFDM waveform.
[0218] Aspect 17: The method according to any one of Aspects 15 to 16 further comprises: determining one or more of the frequency allocation, bandwidth, or duration of the first control resource set based at least in part on one or more predetermined values or indications provided in an information block within the first synchronization signal block, wherein the associated synchronization signal block and control resource set in each associated multiplexed block are multiplexed in a continuous frequency domain allocation.
[0219] Aspect 18: The method according to any one of Aspects 15 to 17, wherein transmitting the first multiplex block further comprises: transmitting a first reference signal in the first multiplex block, wherein the first reference signal spans frequency resources associated with the first synchronization signal block and the first control resource set.
[0220] Aspect 19: According to the method of aspect 18, wherein the first reference signal spans a fixed frequency bandwidth associated with the first multiplexing block.
[0221] Aspect 20: The method according to aspect 18 further includes: selecting a frequency bandwidth for the first reference signal from two or more blind decoding frequency bandwidth candidates within the first multiplexing block.
[0222] Aspect 21: The method according to aspect 18 further includes: selecting a frequency bandwidth for the first reference signal from two or more available frequency bandwidths within the first multiplexing block; and transmitting an indication of the frequency bandwidth for the first reference signal in a synchronization signal within the first synchronization signal block.
[0223] Aspect 22: According to the method of aspect 15, the transmission of the first multiplexing block further includes: transmitting a first reference signal in a first frequency bandwidth associated with the first synchronization signal block; and transmitting a second reference signal in a second frequency bandwidth associated with the first control resource set.
[0224] Aspect 23: The method according to any one of aspects 15 to 22 further includes: transmitting a reference signal in each multiplexing block, wherein the reference signal is transmitted as: a dedicated DFT-s-ODFM symbol within the associated multiplexing block, a subset of subcarriers within one or more symbols of the associated multiplexing block, or a subset of time-domain symbols inserted into the time-domain symbol set prior to the discrete Fourier transform of the associated multiplexing block.
[0225] Aspect 24: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to any one of aspects 1 to 14.
[0226] Aspect 25: An apparatus for wireless communication at a UE, comprising at least one unit for performing the method according to any one of aspects 1 to 14.
[0227] Aspect 26: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 14.
[0228] Aspect 27: An apparatus for wireless communication at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to any one of aspects 15 to 23.
[0229] Aspect 28: An apparatus for wireless communication at a base station, comprising at least one unit for performing the method according to any one of aspects 15 to 23.
[0230] Aspect 29: A non-transitory computer-readable medium storing code for wireless communication at a base station, said code including instructions executable by a processor to perform the method according to any one of aspects 15 to 23.
[0231] It should be noted that the methods described in this paper describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods can be combined.
[0232] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in much of the description, the techniques described herein apply beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described can be applied to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.
[0233] The information and signals described herein can be represented using any of a variety of different techniques and methods. For example, the data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.
[0234] The various illustrative blocks and components described herein can be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but alternatively, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).
[0235] The functions described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions can be stored as one or more instructions or code on or transmitted through a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing the functions can also be physically located in various locations, including being distributed such that different parts of the functions are implemented in different physical locations.
[0236] Computer-readable media includes both non-transitory computer storage media and communication media, with communication media encompassing any medium that facilitates the transfer of computer programs from one place to another. Non-transitory storage media can be any available medium accessible by a general-purpose computer or a special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compressed optical disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired units of program code in the form of instructions or data structures, and accessible by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs, wherein disks typically copy data magnetically, while optical discs use lasers to copy data optically. The combinations described above are also included within the scope of computer-readable media.
[0237] As used herein (including in the claims), the word "or" in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such that a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "at least partially based on" should be interpreted in the same manner as the phrase "based on".
[0238] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by a dash and a second reference numeral following the reference numeral, used to differentiate between similar components. If only the first reference numeral is used in the specification, the description applies to any one of the similar components having the same first reference numeral, without regard to the second reference numeral or other subsequent reference numerals.
[0239] This document describes exemplary configurations in conjunction with the accompanying drawings, and does not represent all examples that can be implemented or that are within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," and not "preferred" or "advantageous over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.
[0240] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is to be given the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1. An apparatus for wireless communication at a user equipment (UE), comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, cause the device to perform the following operations: The first beam is monitored for a first multiplexed block, the first multiplexed block including a first synchronization signal block multiplexed with a first control resource set in the frequency domain; The channel associated with the first synchronization signal block and the first control resource set is estimated at least in part based on a first reference signal included in the reference signal resource set, wherein the reference signal resource set spans the first synchronization signal block and the first control resource set; as well as At least a portion of one or more of the first synchronization signal block or the first control resource set is decoded, at least in part based on the estimation of the channel.
2. The apparatus according to claim 1, wherein, The first reference signal spans the frequency domain resources associated with each of the first synchronization signal block and the first control resource set in the reference signal resource set.
3. The apparatus according to claim 1, wherein, The first reference signal spans a fixed frequency bandwidth of the reference signal resource set.
4. The apparatus according to claim 1, wherein, The instructions can also be executed by the processor to cause the device to perform the following operations: Blind decoding is performed on two or more frequency bandwidth candidates within the reference signal resource set to identify the frequency bandwidth of the first reference signal.
5. The apparatus according to claim 1, wherein, The instructions can also be executed by the processor to cause the device to perform the following operations: The frequency bandwidth containing the first reference signal is identified at least in part based on the indication provided by the synchronization signal within the first synchronization signal block.
6. The apparatus according to claim 5, wherein, The indication provided by the synchronization signal is at least in part based on the sequence of the synchronization signal, the scrambling code applied to the synchronization signal, or a combination thereof.
7. The apparatus according to claim 1, wherein, The instructions can also be executed by the processor to cause the device to perform the following operations: The channel associated with the first synchronization signal block is estimated at least in part based on a first portion of the set of reference signal resources spanning a first frequency bandwidth associated with the first synchronization signal block; The second frequency bandwidth associated with the first control resource set is determined at least in part based on information from the first synchronization signal block; as well as The channel associated with the first control resource set is estimated at least in part based on a second portion of the reference signal resource set spanning the second frequency bandwidth.
8. The apparatus according to claim 1, wherein, The instructions can also be executed by the processor to cause the device to perform the following operations: The first channel associated with the first synchronization signal block is estimated at least in part based on the first reference signal within a first frequency bandwidth of the reference signal resource set, wherein the first frequency bandwidth corresponds to the frequency bandwidth of the first synchronization signal block; and The second channel associated with the first control resource set is estimated at least in part based on a second reference signal in a second frequency bandwidth of the reference signal resource set, wherein the second frequency bandwidth corresponds to the frequency bandwidth of the first control resource set.
9. An apparatus for wireless communication at an access network entity, comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, cause the device to perform the following operations: For the first beam, the first synchronization signal block and the first control resource set are multiplexed into a first multiplexed block in the frequency domain; The first synchronization signal block and the first control resource set are transmitted in the first multiplexing block; as well as At least a first reference signal is transmitted in the reference signal resource set spanning the first synchronization signal block and the first control resource set.
10. The apparatus according to claim 9, wherein, The first reference signal spans the frequency domain resources associated with each of the first synchronization signal block and the first control resource set in the reference signal resource set.
11. The apparatus according to claim 9, wherein, The first reference signal spans a fixed frequency bandwidth of the reference signal resource set.
12. The apparatus according to claim 11, wherein, The fixed frequency bandwidth is selected from a set of two or more frequency bandwidth candidates that can be used to transmit the first reference signal.
13. The apparatus according to claim 9, wherein, The instructions can also be executed by the processor to cause the device to perform the following operations: Using the synchronization signal within the first synchronization signal block, an indication of the frequency bandwidth containing the first reference signal is sent.
14. The apparatus according to claim 13, wherein, The indication provided by the synchronization signal is at least in part based on the sequence of the synchronization signal, the scrambling code applied to the synchronization signal, or a combination thereof.
15. The apparatus according to claim 9, wherein, The instructions can also be executed by the processor to cause the device to perform the following operations: A second reference signal is transmitted in the reference signal resource set, wherein the first reference signal is transmitted within a first frequency bandwidth of the reference signal resource set, the first frequency bandwidth corresponding to the frequency bandwidth of the first synchronization signal block, and the second reference signal is transmitted within a second frequency bandwidth of the reference signal resource set, the second frequency bandwidth corresponding to the frequency bandwidth of the first control resource set.
16. A method for wireless communication at a user equipment (UE), comprising: The first beam is monitored for a first multiplexed block, the first multiplexed block including a first synchronization signal block multiplexed with a first control resource set in the frequency domain; The channel associated with the first synchronization signal block and the first control resource set is estimated at least in part based on a first reference signal included in the reference signal resource set, wherein the reference signal resource set spans the first synchronization signal block and the first control resource set; as well as At least a portion of one or more of the first synchronization signal block or the first control resource set is decoded, at least in part based on the estimation.
17. The method according to claim 16, wherein, The first reference signal spans the frequency domain resources associated with each of the first synchronization signal block and the first control resource set in the reference signal resource set.
18. The method according to claim 16, wherein, The first reference signal spans a fixed frequency bandwidth of the reference signal resource set.
19. The method of claim 16, further comprising: Blind decoding is performed on two or more frequency bandwidth candidates within the reference signal resource set to identify the frequency bandwidth of the first reference signal.
20. The method of claim 16, further comprising: The frequency bandwidth containing the first reference signal is identified at least in part based on the indication provided by the synchronization signal within the first synchronization signal block.
21. The method according to claim 20, wherein, The indication provided by the synchronization signal is at least in part based on the sequence of the synchronization signal, the scrambling code applied to the synchronization signal, or a combination thereof.
22. The method according to claim 16, wherein, The estimation includes: The channel associated with the first synchronization signal block is estimated at least in part based on a first portion of the set of reference signal resources spanning a first frequency bandwidth associated with the first synchronization signal block; The second frequency bandwidth associated with the first control resource set is determined at least in part based on information from the first synchronization signal block; and The channel associated with the first control resource set is estimated at least in part based on a second portion of the reference signal resource set spanning the second frequency bandwidth.
23. The method according to claim 16, wherein, The estimation includes: The first channel associated with the first synchronization signal block is estimated at least in part based on the first reference signal within a first frequency bandwidth of the reference signal resource set, wherein the first frequency bandwidth corresponds to the frequency bandwidth of the first synchronization signal block; and The second channel associated with the first control resource set is estimated at least in part based on a second reference signal in a second frequency bandwidth of the reference signal resource set, wherein the second frequency bandwidth corresponds to the frequency bandwidth of the first control resource set.
24. A method for wireless communication at an access network entity, comprising: For the first beam, the first synchronization signal block and the first control resource set are multiplexed into a first multiplexed block in the frequency domain; The first synchronization signal block and the first control resource set are transmitted in the first multiplexing block; as well as At least a first reference signal is transmitted in the reference signal resource set spanning the first synchronization signal block and the first control resource set.
25. The method according to claim 24, wherein, The first reference signal spans the frequency domain resources associated with each of the first synchronization signal block and the first control resource set in the reference signal resource set.
26. The method of claim 24, wherein, The first reference signal spans a fixed frequency bandwidth of the reference signal resource set.
27. The method according to claim 26, wherein, The fixed frequency bandwidth is selected from a set of two or more frequency bandwidth candidates that can be used to transmit the first reference signal.
28. The method of claim 24, further comprising: Using the synchronization signal within the first synchronization signal block, an indication of the frequency bandwidth containing the first reference signal is sent.
29. The method according to claim 28, wherein, The indication provided by the synchronization signal is at least in part based on the sequence of the synchronization signal, the scrambling code applied to the synchronization signal, or a combination thereof.
30. The method of claim 24, further comprising: A second reference signal is transmitted in the reference signal resource set, wherein the first reference signal is transmitted within a first frequency bandwidth of the reference signal resource set, the first frequency bandwidth corresponding to the frequency bandwidth of the first synchronization signal block, and the second reference signal is transmitted within a second frequency bandwidth of the reference signal resource set, the second frequency bandwidth corresponding to the frequency bandwidth of the first control resource set.