RU2781812C1 - Indicator of overlap of control search spaces - Google Patents

Abstract

FIELD: wireless communication.

SUBSTANCE: stated technical result is achieved by the user equipment (UE) receiving a synchronisation signal block (SSB) from the set of QCL SSBs from the base station, wherein the SSB contains an indicator of the parameter indicating the information associated with the multiple locations of downlink control channels corresponding to the set of QCL SSBs; based on the parameter, the UE determining the multiple locations of downlink control channels corresponding to the set of QCL SSBs; the UE accepting the downlink transmission authorisation for system information based on the monitoring of one or more locations of downlink control channels from the multiple locations of downlink control channels; the UE receiving system information based on the downlink transmission authorisation; the UE establishing a connection with the base station based on the SSB and the received system information.

EFFECT: improved indication of overlapping locations of control channels corresponding to a set of quasi co-located (QCL) synchronisation signal blocks (SSB).

29 cl, 19 dwg

Description

Cross-references to related applications

[0001] This patent application claims priority to U.S. Patent Application No. 16/681554 by SUN et al. entitled "CONTROL SEARCH SPACE OVERLAP INDICATION", filed November 12, 2019, and Provisional Patent Application (India) No. 201841042779 by SUN et al., titled "CONTROL SEARCH SPACE OVERLAP INDICATION", filed November 14, 2018, assigned as assignee of this document.

State of the art

[0002] The following description generally relates to wireless communications, and more specifically to the control search space overlap indicator.

[0003] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, and the like. These systems may be capable of supporting communication with multiple users by sharing available system resources (eg, frequency, time, and power). Examples of such multiple access systems include fourth generation (4G) systems, such as Long Term Evolution (LTE) systems or LTE-Advanced (LTE-A) or LTE-A Pro systems, and fifth generation systems. (5G), which may be referred to as New Radio Standard (NR) systems. These systems may use technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or multiplexing. with orthogonal frequency division with discrete Fourier transform coding (DFT-S-OFDM). A multiple access wireless communication system may include a number of base stations or network access nodes, each of which simultaneously communicates with multiple communication devices, which may be otherwise known as a "subscriber unit (UE)".

[0004] Wireless communication systems typically support a variety of communication technologies in order to support wireless communication between a base station and a UE. For example, the base station may transmit a plurality of synchronization signals (eg, synchronization signal blocks (SSB)) in order to support receipt by the UE. Typically, SSBs may carry or transmit various parameters associated with the base station that the UE uses to align (in time, frequency, etc.) with the base station, at least to some extent, in order to establish a connection. between the base station and the UE. Traditionally, a limited or predetermined number of SSBs are typically transmitted by a base station. In a millimeter wave (mmW) capable network, a base station may transmit SSB in beamformed transmissions that sweep around the coverage area of the base station.

[0005] Traditionally, a limited or predetermined number of SSBs available for transmission supports one-to-one mapping between SSBs and different control signal resources. For example, each SSB may have a corresponding set of control signaling resources (eg, Physical Downlink Control Channel (PDCCH)) associated with it, eg, a numeric index for the SSB may correspond to a particular PDCCH resource. However, legacy technologies do not support a configuration in which additional SSBs can be used for transmission, eg, may not provide a mechanism that supports the PDCCH search space overlap indicator. Accordingly, in a situation in which additional SSBs are available for transmission, conventional wireless networks may not support mapping multiple SSBs to a particular control channel resource.

The essence of the invention

[0006] The technologies described relate to improved methods, systems, devices, and equipment that support an overlap indicator of search control spaces. In general, the described techniques provide various mechanisms that improve the indication of overlapping control channel locations corresponding to a set of quasi-collocated (QCL) synchronization signal blocks (SSBs). For example, the base station may transmit a plurality of SSBs from a QCL SSB set. In some aspects, each of the SSBs in the SSB set carries or otherwise transmits an offset indicator between successive SSBs in the SSB QCL set. Broadly, offset may mean a parameter carried or transmitted in SSB (eg, in the Physical Broadcast Channel (PBCH) portion of SSB) that permits or otherwise maintains overlapping control channel locations for different SSBs. The user equipment (UE) may receive one of the SSBs transmitted from the base station and determine the indicated offset. Based on this offset, the UE may determine a plurality of downlink control channel locations (eg, physical downlink control channel (PDCCH) locations) that correspond to the SSB QCL set. The UE may use the determined downlink control channel locations to receive a downlink grant for a system information signal (eg, Remaining Minimum System Information (RMSI)), eg, by monitoring the downlink control channel locations. The UE may receive system information according to the downlink transmission grant and use the information in the system information (eg, RMSI) as well as SSB to establish a connection with the base station.

[0007] In other aspects, the described technologies may support UE rate negotiation operations. For example, system information (eg, RMSI) may carry or transmit a bitmap that indicates a subset of the SSBs that are actually transmitted from the SSB set, for example, bits in the bitmap may be set to "1" to indicate that SSB is being transmitted in this location, or vice versa. In some aspects, the system information may further carry or convey an indicator of a maximum number of SSBs available for use that is greater than the total number of SSBs in the SSB set. For example, the bitmap may be configured as "10101010" to indicate that SSB positions 0, 2, 4, and 6 are actually transmitted in the SSB set consisting of SSB positions (or indices) 0-7. The maximum SSB number indicator may be set to the number of maximum SSB positions used, eg 12, 16, 18, or some other number of maximum SSB positions that can be used. The UE may configure the rate negotiation, in at least some aspects, based on the subset of SSBs indicated by the bitmap as well as the indicated maximum number of SSBs available for use. In some aspects, this may include a UE having a rule or otherwise repeating the pattern of the actually transmitted SSBs (e.g., a subset of SSBs in the SSB set) and the thinned SSB positions in the SSB set for the SSB positions in use, e.g., the UE may repeat the pattern "10101010" for SSB positions from 8 to the end of the maximum number of SSBs available for use. Accordingly, the UE may receive a data transmission (eg, a physical downlink shared channel (PDSCH) transmission) using the configured rate matching.

[0008] A wireless communication method in a UE is described. The method may include receiving, from a base station, an SSB from a QCL SSB set, the SSB including a parameter indicator indicating information associated with a set of downlink control channel locations corresponding to the SSB QCL set, determining, based on the parameter, the set downlink control channel locations corresponding to the SSB QCL set, receiving a downlink grant for system information based on monitoring one or more downlink control channel locations from the set of downlink control channel locations, receiving system information based on the grant to downlink transmission and connection establishment with the base station based on SSB and received system information.

[0009] Describes the equipment for wireless communication in the UE. The hardware may include a processor, a memory device in electronic communication with the processor, and instructions stored in the memory device. Instructions may be executed by the processor to cause the equipment to receive, from the base station, the SSBs of the SSB QCL set, the SSB including a parameter indicator indicating information associated with the set of downlink control channel locations corresponding to the SSB QCL set, determine , based on the parameter, a set of downlink control channel locations corresponding to the SSB QCL set, receive a downlink transmission grant for system information based on monitoring one or more downlink control channel locations from the set of downlink control channel locations, receive system information based on the downlink transmission grant; and establish a connection with the base station based on the SSB and the received system information.

[0010] Describes other equipment for wireless communication in the UE. The equipment may include means for receiving, from a base station, an SSB from a QCL SSB set, the SSB including a parameter indicator indicating information associated with a set of downlink control channel locations corresponding to the SSB QCL set, determining, based on the parameter , a set of downlink control channel locations corresponding to the SSB QCL set, receiving a downlink transmission grant for system information based on monitoring one or more downlink control channel locations from the set of downlink control channel locations, receiving system information on based on downlink transmission grant and base station connection establishment based on SSB and received system information.

[0011] A non-volatile computer-readable medium storing a code for wireless communication in a UE is described. The code may include instructions executable by a processor to receive, from a base station, SSBs from the SSB QCL set, the SSB including a parameter indicator indicating information associated with the set of downlink control channel locations corresponding to the QCL set. SSB, determine, based on a parameter, a set of downlink control channel locations corresponding to the SSB QCL set, receive a downlink transmission grant for system information based on monitoring one or more downlink control channel locations from the set of downlink control channel locations link, receive system information based on the downlink transmission grant, and establish a connection with the base station based on the SSB and the received system information.

[0012] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, the parameter includes an offset indicator between successive SSBs in a QCL SSB set.

[0013] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, SSB reception may include operations, features, means, or instructions for receiving the SSB PBCH portion, the SSB PBCH portion including a parameter indicator.

[0014] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, receiving the PBCH portion of a sync block may include operations, features, means, or instructions for performing soft combining for a set of SSBs.

[0015] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, a parameter indicator may be common to each SSB in a set of SSBs.

[0016] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, an SSB set includes at least one of a QCL SSB set, a set of different QCL SSB sets, each SSB associated with a base station, or combinations of the above.

[0017] Some examples of the method, equipment, and non-volatile computer-readable medium described herein may further include steps, features, means, or instructions for determining the index of each SSB from the QCL SSB set, and thereby determining the set of downlink control channel locations The link may be based on a specific index for each SSB in the QCL SSB set.

[0018] Some examples of the method, equipment, and non-volatile computer-readable medium described herein may further include, steps, features, means, or instructions for determining a set of downlink control channel locations based on a frame in which SSB can be received, and the parameter specified in the SSB.

[0019] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, receiving a downlink grant may include operations, features, means, or instructions for monitoring each downlink control channel location from a set of locations. downlink control channels.

[0020] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, receiving a downlink grant may include steps, features, means, or instructions for determining that no downlink control information has been detected. during the first instance of the downlink control channel location set, and monitoring, based on the parameter, the second instance of the downlink control channel location set to detect a downlink transmission grant.

[0021] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, downlink control channel locations of a set of downlink control channel locations include common Type 0 PDCCH search spaces.

[0022] A wireless communication method in a base station is described. The method may include transmitting a set of SSBs, the SSB set including a QCL SSB set, each SSB of the SSB set including a parameter indicator indicating information associated with a set of downlink control channel locations corresponding to the SSB QCL set, transmitting , based on the parameter, the downlink transmission grant for system information on the set of downlink control channel locations corresponding to the SSB QCL set, transmitting the system information according to the transmission grant, and establishing a connection with the UE based on the SSB and the system information.

[0023] Describes equipment for wireless communication in a base station. The hardware may include a processor, a memory device in electronic communication with the processor, and instructions stored in the memory device. The instructions may be executed by the processor to cause the equipment to transmit a set of SSBs, the SSB set including a QCL SSB set, each SSB of the SSB set including a parameter indicator indicating information associated with the downlink control channel location set, corresponding to the SSB QCL set, transmit, based on the parameter, a downlink transmission grant for system information on the downlink control channel location set corresponding to the SSB QCL set, transmit system information according to the transmit grant, and establish a connection with the UE based on SSB and system information.

[0024] Describes other equipment for wireless communication in the base station. The equipment may include means for transmitting a set of SSBs, the SSB set including a QCL SSB set, each SSB of the SSB set including a parameter indicator indicating information associated with a set of downlink control channel locations corresponding to the SSB QCL set. , transmitting, based on the parameter, a downlink transmission grant for system information on the set of downlink control channel locations corresponding to the SSB QCL set, transmitting system information according to the transmission grant, and establishing a connection with the UE based on the SSB and the system information.

[0025] A non-volatile computer-readable medium storing a code for wireless communication in a base station is described. The code may include instructions executable by a processor to transmit an SSB set, the SSB set including a QCL SSB set, each SSB of the SSB set including a parameter indicator indicating information associated with the downlink control channel location set. corresponding to the SSB QCL set, transmit, based on the parameter, a downlink transmission grant for system information on the downlink control channel location set corresponding to the SSB QCL set, transmit system information according to the transmission grant, and establish a connection with the UE based on SSB and system information.

[0026] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, the parameter includes an offset indicator between successive SSBs in a QCL SSB set.

[0027] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, the transmission of an SSB set may include operations, features, means, or instructions for transmitting the PBCH portion of the SSB, wherein the physical broadcast portion of the SSB includes a parameter indicator .

[0028] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, a parameter indicator may be common to each SSB in a set of SSBs.

[0029] A wireless communication method in a UE is described. The method may include receiving system information including a bitmap indicating a subset of SSBs transmitted from the set of SSBs, wherein the system information signal further indicates a maximum number of SSBs available for use, wherein the maximum number of SSBs available for use is greater than the total number SSB in the SSB set, configuring rate matching based on the subset of SSBs indicated by the bitmap and the specified maximum number of SSBs available for use, and receiving a PDSCH transmission based on the rate matching.

[0030] Describes the equipment for wireless communication in the UE. The hardware may include a processor, a memory device in electronic communication with the processor, and instructions stored in the memory device. Instructions may be executed by the processor to cause the equipment to receive system information including a bitmap indicating a subset of SSBs transmitted from the SSB set, wherein the system information signal further indicates a maximum number of SSBs available for use, wherein the maximum number of SSBs available to use exceeds the total number of SSBs in the SSB set, configure rate negotiation based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use, and receive a PDSCH transmission based on the rate negotiation.

[0031] Describes other equipment for wireless communication in the UE. The equipment may include means for receiving system information including a bitmap indicating a subset of SSBs transmitted from the set of SSBs, wherein the system information signal further indicates a maximum number of SSBs available for use, wherein the maximum number of SSBs available for use is greater than the total number of SSBs in the SSB set, configuring the rate matching based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use, and receiving the PDSCH transmission based on the rate matching.

[0032] A non-volatile computer-readable medium storing a code for wireless communication in a UE is described. The code may include instructions executable by the processor to receive system information including a bitmap indicating a subset of SSBs transmitted from the SSB set, the system information signal further indicating a maximum number of SSBs available for use, where the maximum number SSBs available for use exceeds the total number of SSBs in the SSB set, configure rate negotiation based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use, and receive a PDSCH transmission based on the rate negotiation.

[0033] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, configuring rate matching may include operations, features, means, or instructions for repeating a pattern in a bitmap for an SSB subset in an SSB set, and for SSBs occurring after the SSB subset and within the maximum number of SSBs available for use.

[0034] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, receiving system information may include operations, features, means, or instructions for receiving a previous PDSCH transmission including system information and decoding the system information. in order to identify the bitmap, where rate matching may not be performed for the previous PDSCH.

[0035] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, a PDSCH transmission may be received during an identical acquisition period in which the maximum number of SSBs available for use may be transmitted.

[0036] A wireless communication method in a base station is described. The method may include transmitting system information including a bitmap indicating a subset of SSBs transmitted from the set of SSBs, wherein the system information further indicates a maximum number of SSBs available for use, wherein the maximum number of SSBs available for use is greater than the total number of SSBs. in the SSB set, configuring rate matching based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use, and performing PDSCH transmission based on the rate matching.

[0037] Describes equipment for wireless communication in a base station. The hardware may include a processor, a memory device in electronic communication with the processor, and instructions stored in the memory device. Instructions may be executed by the processor to cause the equipment to transmit system information including a bitmap indicating a subset of SSBs transmitted from the set of SSBs, the system information further indicating a maximum number of SSBs available for use, wherein the maximum number of SSBs available for usage exceeds the total number of SSBs in the SSB set, configure rate negotiation based on the subset of SSBs indicated by the bitmap and the specified maximum number of SSBs available for use, and perform PDSCH transmission based on the rate negotiation.

[0038] Describes other equipment for wireless communication in the base station. The equipment may include means for transmitting system information including a bitmap indicating a subset of SSBs transmitted from the set of SSBs, wherein the system information further indicates a maximum number of SSBs available for use, where the maximum number of SSBs available for use exceeds the total the number of SSBs in the SSB set, configuring the rate matching based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use, and performing PDSCH transmission based on the rate matching.

[0039] A non-volatile computer-readable medium storing a code for wireless communication in a base station is described. The code may include instructions executable by the processor to transmit system information including a bitmap indicating a subset of SSBs transmitted from the SSB set, wherein the system information further indicates a maximum number of SSBs available for use, wherein the maximum number of SSBs , available for use, exceeds the total number of SSBs in the SSB set, configure rate negotiation based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use, and perform PDSCH transmission based on the rate negotiation.

[0040] Some examples of method, equipment, and non-volatile computer-readable media described herein may further include operations, features, means, or instructions for repeating a pattern in a bitmap for transmitting a subset of SSBs in an SSB set and for a set of additional SSBs transmitted after the SSB subset and within the maximum number of SSBs available for use.

[0041] In some examples of the method, equipment, and non-volatile computer-readable medium described herein, the transmission of system information may include operations, features, means, or instructions for performing a previous PDSCH transmission including system information.

Brief description of the drawings

[0042] FIG. 1 illustrates an example system for wireless communication that supports an overlap indicator of control search spaces in accordance with aspects of the present disclosure.

[0043] FIG. 2 illustrates an example of a wireless communication system that supports a control search space overlap indicator in accordance with aspects of the present disclosure.

[0044] FIG. 3 illustrates an example SSB configuration that supports the control search space overlap indicator in accordance with aspects of the present disclosure.

[0045] FIG. 4A and 4B illustrate examples of an SSB configuration that supports the control search space overlap indicator in accordance with aspects of the present disclosure.

[0046] FIG. 5 illustrates an example process that maintains an overlap indicator for control search spaces, in accordance with aspects of the present disclosure.

[0047] FIG. 6 illustrates an example process that maintains an overlap indicator for control search spaces, in accordance with aspects of the present disclosure.

[0048] FIG. 7 and 8 show block diagrams of devices that support the control search space overlap indicator in accordance with aspects of the present disclosure.

[0049] FIG. 9 shows a block diagram of a communications manager that maintains an overlap indicator of control search spaces in accordance with aspects of the present disclosure.

[0050] FIG. 10 shows a diagram of a system including an apparatus that supports an overlap indicator of control search spaces in accordance with aspects of the present disclosure.

[0051] FIG. 11 and 12 show block diagrams of devices that support the control search space overlap indicator in accordance with aspects of the present disclosure.

[0052] FIG. 13 shows a block diagram of a communications manager that maintains an overlap indicator of control search spaces in accordance with aspects of the present disclosure.

[0053] FIG. 14 shows a diagram of a system including an apparatus that supports a control search space overlap indicator in accordance with aspects of the present disclosure.

[0054] FIG. 15-18 show flowcharts illustrating methods that support the control search space overlap indicator in accordance with aspects of the present disclosure.

Detailed description of the invention

[0055] Wireless communication systems typically support a variety of communication technologies in order to support wireless communication between a base station and a user equipment (UE). For example, the base station may transmit a plurality of synchronization signals (eg, synchronization signal blocks (SSB)) in order to support receipt by the UE. Typically, SSBs may carry or transmit various parameters associated with the base station that the UE uses to align (in time, frequency, etc.) with the base station, at least to some extent, in order to establish a connection. between the base station and the UE. Traditionally, a limited or predetermined number of SSBs are typically transmitted by a base station. In a millimeter wave (mmW) network, a base station may transmit SSB in beamformed transmissions that sweep around the coverage area of the base station.

[0056] Traditionally, a limited or predetermined number of SSBs available for transmission supports one-to-one mapping between SSBs and different control signal resources. For example, each SSB may have a corresponding set of control signaling resources (eg, a physical downlink control channel (PDCCH)) associated with it, eg, an index number for the SSB may correspond to a particular PDCCH resource. However, conventional technologies do not support a configuration in which additional SSBs can be used for transmission, and some SSBs may not be transmitted due to the result of a listen before you speak (LBT) procedure on a carrier that requires LBT- pre-transmission procedure, for example, may not provide a mechanism that supports the PDCCH search space overlap indicator. Accordingly, in a situation in which additional SSBs are available for transmission, conventional wireless networks may not support mapping multiple SSBs to a particular control channel resource.

[0057] Initially, aspects of the disclosure are described in the context of a wireless communication system. The technologies described relate to improved methods, systems, apparatuses, and equipment that support the control search space overlap indicator. In general, the described techniques provide various mechanisms that improve the indication of overlapping control channel locations corresponding to a set of quasi-collocated (QCL) synchronization signal blocks (SSBs). For example, the base station may transmit a plurality of SSBs from a QCL SSB set. The SSBs selected for transmission from the QCL SSB set may be based on the results of the LBT procedure. In some aspects, each of the SSBs in the SSB set carries or otherwise transmits an offset indicator between successive SSBs in the SSB QCL set. Broadly, offset may mean a parameter carried or transmitted in SSB (eg, in the Physical Broadcast Channel (PBCH) portion of SSB) that permits or otherwise maintains overlapping control channel locations for different SSBs. The UE may receive one of the SSBs transmitted from the base station and determine the indicated offset. Based on this offset, the UE may determine a plurality of downlink control channel locations (eg, physical downlink control channel (PDCCH) locations) that correspond to the SSB QCL set. The UE may use the determined downlink control channel locations to receive a downlink grant for a system information signal (eg, Remaining Minimum System Information (RMSI)), eg, by monitoring the downlink control channel locations. The UE may receive system information according to the downlink transmission grant and use the information in the system information (eg, RMSI) as well as SSB to establish a connection with the base station.

[0058] In other aspects, the described technologies may support UE rate matching operations. For example, system information (eg, RMSI) may carry or transmit a bitmap that indicates a subset of the SSBs that are actually transmitted from the SSB set, for example, bits in the bitmap may be set to "1" to indicate that SSB is being transmitted in this location, or vice versa. In some aspects, the system information may further carry or convey an indicator of a maximum number of SSBs available for use that is greater than the total number of SSBs in the SSB set. For example, the bitmap may be configured as "10101010" to indicate that SSB positions 0, 2, 4, and 6 are actually transmitted in the SSB set consisting of SSB positions (or indices) 0-7. The maximum SSB number indicator may be set to the number of maximum SSB positions used, eg 12, 16, 18, or some other number of maximum SSB positions that can be used. The UE may configure the rate negotiation, in at least some aspects, based on the subset of SSBs indicated by the bitmap as well as the indicated maximum number of SSBs available for use. In some aspects, this may include a UE having a rule or otherwise repeating the pattern of the actually transmitted SSBs (e.g., a subset of SSBs in the SSB set) and the thinned SSB positions in the SSB set for the SSB positions in use, e.g., the UE may repeat the pattern "10101010" for SSB positions from 8 to the end of the maximum number of SSBs available for use. Accordingly, the UE may receive a data transmission (eg, a physical downlink shared channel (PDSCH) transmission) using the configured rate matching.

[0059] Aspects of the disclosure are further illustrated by and described with reference to hardware diagrams, system diagrams, and flowcharts that relate to the control search space overlap indicator.

[0060] FIG. 1 illustrates an example of a wireless communication system 100 that supports a control search space overlap indicator in accordance with aspects of the present disclosure. Wireless communication system 100 includes base stations 105, UEs 115, and core network 130. In some examples, wireless communication system 100 may be a Long Term Evolution (LTE) network, LTE-Advanced (LTE-A), LTE -A Pro-network or a network based on a new radio standard (NR). In some cases, wireless communication system 100 may support enhanced broadband, ultra-reliable (eg, mission-critical) communication, low latency communication, or communication with low cost, low complexity devices.

[0061] Base stations 105 may communicate wirelessly with UE 115 via one or more base station antennas. Base stations 105 described herein may include, or may be referred to by those skilled in the art as base transceiver station, radio base station, access point, radio transceiver, Node B, evolved Node B (eNB), node Next Generation B or Giga Node B (either of which may be referred to as gNB), Native Node B, Native Enhanced Node B, or some other appropriate term. The wireless communication system 100 may include various types of base stations 105 (eg, macro cell or small cell base stations). The UEs 115 described herein may be able to communicate with various types of base stations 105 and network equipment, including macro eNBs, small cell eNBs, gNBs, relay base stations, and the like.

[0062] Each base station 105 may be associated with a specific geographic coverage area 110 in which communication is maintained with different UEs 115. Each base station 105 may provide communication coverage for a respective geographic coverage area 110 via links 125, and links 125 between base station 105 and UE 115 may use one or more carriers. Links 125 shown in wireless communication system 100 may include uplink transmissions from UE 115 to base station 105 or downlink transmissions from base station 105 to UE 115. Downlink transmissions may also be referred to as " forward link transmissions", while uplink transmissions may also be referred to as "reverse link transmissions".

[0063] Geographic coverage area 110 for base station 105 may be divided into sectors constituting part of geographic coverage area 110, and each sector may be associated with a cell. For example, each base station 105 may provide communication coverage for a macro cell, small cell, public hotspot, or other types of cells, or various combinations of the foregoing. In some examples, base station 105 may be mobile and therefore provide communication coverage for a moving geographic coverage area 110 . In some examples, different geographic coverage areas 110 associated with different technologies may overlap, and overlapping geographic coverage areas 110 associated with different technologies may be supported by an identical base station 105 or by different base stations 105. Wireless communication system 100 may include including, for example, a heterogeneous LTE/LTE-A or NR network in which different types of base stations 105 provide coverage for different geographic coverage areas 110.

[0064] The term "cell" means a communication entity used to communicate with base station 105 (e.g., by carrier) and may be associated with an identifier to distinguish neighboring cells (e.g., physical cell identifier (PCID), virtual cell identifier (VCID)) operating over the same or different carrier. In some examples, a carrier may support multiple cells, and different cells may be configured according to different types of protocols (e.g., machine communication (MTC), narrowband Internet of Things (NB-IoT), advanced mobile broadband (eMBB), etc.). .p.) that can provide access for different types of devices. In some cases, the term "cell" may mean a portion of the geographic coverage area 110 (eg, sector) in which the logical entity operates.

[0065] UE 115 may be distributed over wireless communication system 100, and each UE 115 may be fixed or mobile. UE 115 may also be referred to as a mobile device, wireless device, remote device, handheld device, or user device, or some other appropriate term, and "device" may also be referred to as a module, station, terminal, or client. UE 115 may also be 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 also mean a wireless subscriber access station (WLL), an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or an MTC device, etc., which may be implemented in various products such as appliances, vehicles, meters, etc.

[0066] Some UEs 115, such as MTC or IoT devices, may be low cost, low complexity devices and may provide automated machine-to-machine communication (eg, via machine-to-machine (M2M)). M2M communication or MTC may refer to communication technologies that allow devices to communicate with each other or with base station 105 without human intervention. In some examples, M2M communications or MTC may include communications from devices that integrate sensors or meters in order to measure or capture information and relay that information to a central server or application that can use the information or present the information to people. A that interacts with a program or application. Some UEs 115 may be designed to collect information or provide automated machine behavior. Application examples for MTC devices include smart metering, stock monitoring, water level monitoring, equipment monitoring, medical monitoring, wildlife monitoring, weather and geological monitoring, fleet management and tracking, remote system data collection security, physical access control, and billing and payment for business services based on transactions.

[0067] Some UEs 115 may be configured to use operating modes that reduce power consumption, such as half-duplex communication (eg, a mode that supports one-way communication via transmit or receive rather than transmit and receive simultaneously). In some examples, half-duplex communications may be performed at a reduced peak rate. Other power saving techniques for UE 115 include switching to a power saving "deep sleep" mode in case of not participating in active communication or operating in limited bandwidth (eg, according to narrowband communication). In some cases, UE 115 may be designed to support mission-critical functions (eg, mission-critical functions), and wireless communication system 100 may be configured to provide ultra-reliable communications for these functions.

[0068] In some cases, UE 115 may also be able to communicate directly with other UEs 115 (eg, using a device-to-device (D2D) or peer-to-peer (P2P) protocol). One or more of a group of UEs 115 using D2D communication may be within the geographic coverage area 110 of base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of base station 105 or otherwise be unable to receive transmissions. from base station 105. In some cases, groups of UEs 115 communicating via D2D communication may use a one-to-many (1:M) system in which each UE 115 transmits to each other UE 115 in the group. In some cases, base station 105 facilitates resource scheduling for D2D communications. In other cases, D2D communication is performed between UEs 115 without the involvement of base station 105.

[0069] Base stations 105 can communicate with core network 130 and with each other. For example, base stations 105 may communicate with core network 130 via backhaul links 132 (eg, via S1, N2, N3, or other interface). Base stations 105 may communicate with each other over backhaul links 134 (eg, via X2, Xn, or other interface) either directly (eg, directly between base stations 105) or indirectly (eg, via core network 130).

[0070] Core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 may be an evolved packet core (EPC), which may include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one one packet data network (PDN) gateway (P-GW). The MME may manage non-access layer functions (eg, control planes), such as mobility, authentication, and bearer management, for UEs 115 served by base stations 105 associated with the EPC. User IP packets may be transmitted through the S-GW, which may directly connect to the P-GW. The P-GW may provide IP address allocation as well as other functions. The P-GW can connect to IP services of network operators. Operator IP services may include access to the Internet, intranet(s), IP Multimedia Subsystem (IMS), or packet switched streaming (PS) service.

[0071] At least some network devices, such as base station 105, may include subcomponents such as an access network entity, which may be an example of an access node controller (ANC). Each access network entity may communicate with UE 115 through a certain number of other transmitting access network entities, which may be referred to as a radio head, smart radio head, or transmit/receive point (TRP). In some configurations, the various functions of each access network entity or base station 105 may be distributed across different network devices (eg, radio heads and access network controllers) or consolidated into a single network device (eg, base station 105).

[0072] Wireless communication system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). In general, the region from 300 MHz to 3 GHz is known as the ultra high frequency (UHF) region or decimeter frequency band, since the wavelengths vary from approximately one decimeter to one meter in length. UHF waves can be blocked or redirected by buildings and surrounding features. However, the waves can penetrate structures sufficiently to provide, via a macro cell, services to UE 115 located in an enclosed space. UHF transmission may be associated with smaller antennas and shorter range (e.g. less than 100 km) compared to transmission using lower frequencies and longer wavelengths of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz .

[0073] The wireless communication system 100 can also operate in the super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter frequency band. The SHF domain includes frequency bands such as the Industrial, Scientific and Medical (ISM) bands at 5 GHz that can be used opportunistically by devices that can tolerate interference from other users.

[0074] The wireless communication system 100 can also operate in the extremely high frequency (EHF) region of the spectrum (eg, 30 GHz to 300 GHz), also known as the millimeter band. In some examples, wireless communication system 100 may support millimeter wave (mmW) communications between UEs 115 and base stations 105, and the EHF antennas of the respective devices may be even smaller and more closely spaced than the UHF antennas. In some cases, this may simplify the use of antenna arrays at UE 115. However, propagation of EHF transmissions may be subject to even more atmospheric attenuation and shorter range than SHF or UHF transmissions. The technologies disclosed in this document may be used for transmissions that use one or more different frequency regions, and the indicated frequency band usage for these frequency regions may differ depending on the country or regulatory authority.

[0075] In some cases, wireless communication system 100 may use licensed and unlicensed radio frequency bands. For example, wireless communication system 100 may use licensed auxiliary band access (LAA), LTE Unlicensed Spectrum Radio Access (LTE-U), or NR technology in an unlicensed frequency band, such as the 5 GHz ISM band. . When operating in unlicensed RF spectrum bands, wireless devices such as base stations 105 and UEs 115 may use listen before you speak (LBT) procedures to make sure that a frequency channel is idle, before transferring data. In some cases, operations in unlicensed bands may be based on a carrier aggregation configuration in combination with component carriers operating in the licensed band (eg, LAA). Unlicensed spectrum operations may include downlink transmissions, uplink transmissions, peer-to-peer transmissions, or a combination thereof. Duplex in unlicensed spectrum can be based on frequency division duplex (FDD), time division duplex (TDD), or a combination of the above.

[0076] In some examples, base station 105 or UE 115 may be equipped with multiple antennas, which may be used to implement technologies such as transmit diversity, receive diversity, multiple input multiple output (MIMO) or shaping. direction diagrams. For example, wireless communication system 100 may use a transmission scheme between a transmitter (eg, base station 105) and a receiver (eg, UE 115) where the transmitter is equipped with multiple antennas and the receiver is equipped with one or more antennas. MIMO communication may use multipath signal propagation to improve spectral efficiency by transmitting or receiving multiple signals through different spatial layers, which may be referred to as spatial multiplexing. Several signals, for example, may be transmitted by the transmitter via different antennas or different combinations of antennas. Likewise, multiple signals may be received by the receiver via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with an identical data stream (eg, identical codeword) or different data streams. Different spatial layers may be associated with different antenna ports used for channel measurement and message generation. MIMO technologies include single user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to an identical receiver, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0077] Beamforming, which may also be referred to as spatial filtering, steered transmission, or steered reception, is a signal processing technique that may be used at a transmitter or receiver (eg, base station 105 or UE 115) to to shape or steer an antenna beam (eg, a transmitted beam or a received beam) along a spatial path between a transmitter and a receiver. Beamforming can be achieved by combining signals transmitted through the antenna elements of an antenna array such that signals propagating with particular orientations relative to the antenna array are subject to constructive interference while others are subject to destructive interference. Adjusting the signals transmitted through the antenna elements may include applying, by the transmitter or receiver, certain amplitude and phase offsets to the signals carried through each of the antenna elements associated with the device. The controls associated with each of the antenna elements may be specified by a set of beamforming weights associated with a particular orientation (eg, relative to the transmitter or receiver antenna array, or relative to some other orientation).

[0078] In one example, base station 105 may use multiple antennas or antenna arrays to perform beamforming operations for directional communication with UE 115. For example, certain signals (eg, synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by the base station 105 repeatedly in different directions, which may include transmitting a signal according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used to identify (eg, by base station 105 or a receiver such as UE 115) a beam direction for subsequent transmission and/or reception by base station 105.

[0079] Some signals, such as data signals associated with a particular receiver, may be transmitted by base station 105 in a single beam direction (eg, in a direction associated with a receiver such as UE 115). In some examples, the beam direction associated with transmissions along one beam direction may be determined at least in part based on a signal that is transmitted in different beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions, and UE 115 may report to base station 105 an indicator regarding the signal it is receiving with the highest signal quality or other acceptable signal quality. Although these technologies are described with reference to signals transmitted in one or more directions by base station 105, UE 115 may use similar technologies to transmit signals repeatedly in different directions (eg, to identify a beam direction for subsequent transmission or reception by UE 115), or to transmit a signal in one direction (for example, to transmit data to a receiving device).

[0080] The receiver (eg, UE 115, which may be an example of an mmW receiver) may try multiple received beams when receiving different signals from base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals . For example, the receiver may try multiple reception directions by receiving through different antenna sub-arrays, by processing received signals according to different antenna sub-arrays, by receiving according to different received beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different received beamforming weight sets applied to signals received at a plurality of antenna elements of an antenna array, any of which may be referred to as "listening" according to different received beams or receiving directions. In some examples, the receiver may use one received beam to receive along one beam direction (eg, when receiving a data signal). A single received beam may be aligned in a beam direction determined at least in part based on listening to different received beam directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio, or otherwise acceptable quality). signal based at least in part on hearing according to multiple beam directions).

[0081] In some cases, the antennas of base station 105 or UE 115 may be located in one or more antenna arrays that may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located in an antenna node, such as an antenna tower. In some cases, the antennas or antenna arrays associated with base station 105 may be located in a variety of geographic locations. Base station 105 may have an antenna array with a number of rows and columns of antenna ports that base station 105 may use to support beamforming when communicating with UE 115. Similarly, UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.

[0082] In some cases, wireless communication system 100 may be a packet-switched network that operates according to a layered protocol stack. In the user plane, communication in a bearer or Packet Data Convergence Protocol (PDCP) layer may be based on IP. The radio link control (RLC) layer can perform packet segmentation and reassembly in order to exchange data over logical channels. The media access control (MAC) layer may perform priority processing and multiplexing of logical channels into transport channels. The MAC layer may also use hybrid automatic repeat request (HARQ) to provide retransmission at the MAC layer to improve link utilization efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer may provide for establishing, configuring and maintaining an RRC connection between UE 115 and base station 105 or core network 130 supporting radio bearers for user plane data. At the physical layer, transport channels may be mapped to physical channels.

[0083] In some cases, UE 115 and base stations 105 may support data retransmissions to increase the likelihood that data is received successfully. HARQ feedback is one technique for increasing the likelihood that data is received correctly over link 125 . HARQ may include a combination of error detection (eg, using cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (eg, automatic retransmission request (ARQ)). HARQ can improve throughput at the MAC layer under poor radio conditions (eg, signal-to-noise ratio conditions). In some cases, a wireless device may support identical-slot HARQ feedback, wherein the device may provide HARQ feedback in a particular time slot for data received in the previous symbol in the time slot. In other cases, the device may provide HARQ feedback in a subsequent timeslot or according to some other timeslot.

[0084] Time slots in LTE or NR may be expressed in multiples of a base unit of time, which may mean, for example, a sampling period T _s =1/30720000 seconds. The communication resource slots may be arranged according to radio frames having a duration of 10 milliseconds (ms), where the frame period may be expressed as T _f =307200*T _s . Radio frames may be identified by a system frame number (SFN) ranging from 0 to 1023. Each frame may include 10 subframes numbered 0 to 9, and each subframe may have a duration of 1 ms. The subframe may further be divided into 2 slots having a duration of 0.5 ms, and each slot may contain 6 or 7 modulation symbol periods (eg, depending on the length of the cyclic prefix added to the beginning of each symbol period). Except for the cyclic prefix, each symbol period may contain 2048 sample periods. In some cases, a subframe may represent the smallest scheduling unit of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In other cases, the smallest scheduling unit of wireless communication system 100 may be less than a subframe, or may be dynamically selected (eg, in Short TTI (sTTI) bursts or in selected component carriers using sTTI).

[0085] In some wireless communication systems, a time slice may be further divided into multiple time minislices containing one or more symbols. In some cases, a time minislice or time minislice symbol may represent the smallest unit of scheduling. Each symbol may vary in duration, for example, depending on the spacing of the subcarriers or the operating frequency band. Additionally, some wireless communication systems may implement slot aggregation, in which multiple slots or minislots are aggregated together and used for communication between UE 115 and base station 105.

[0086] The term "carrier" means a set of radio frequency spectrum resources having a given physical layer structure to support communication over link 125. For example, link carrier 125 may include a portion of the RF spectrum band that operates according to physical layer channels for a given radio access technology. Each physical layer channel may carry user data, control information, or other overhead. The carrier may be associated with a predetermined frequency channel (eg, Evolved Universal System for Mobile Communications (E-UTRA) (EARFCN) Terrestrial Radio Access (EARFCN) absolute RF channel number) and may be positioned according to a channel pattern for discovery by UE 115. The carriers may be downlink or uplink (eg, in FDD mode) or configured to carry communication in the downlink and uplink (eg, in TDD mode). In some examples, waveforms transmitted on a carrier may be composed of multiple subcarriers (for example, using multiple carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or OFDM with spread spectrum coding and discrete Fourier transform (DFT-s-OFDM)).

[0087] The organizational structure of the carriers may differ for different radio access technologies (eg, LTE, LTE-A, LTE-A Pro, NR). For example, carrier communication may be organized according to TTIs or timeslots, each of which may include user data as well as control information or signaling to support decoding of user data. The carrier may also include dedicated transmission of receiving signaling (eg, synchronization signals or system information, etc.) and transmission of control signaling that coordinates the operation for the carrier. In some examples (eg, in a carrier aggregation configuration), the carrier may also have receive signaling or control signaling that coordinates operations for other carriers.

[0088] Physical channels may be multiplexed on a carrier according to various technologies. The physical control channel and the physical data channel may be multiplexed on the downlink carrier, for example, using time division multiplexing (TDM) technologies, frequency division multiplexing (FDM) technologies or hybrid TDM-FDM technologies. In some examples, control information transmitted over a physical control channel may be distributed among different control regions in a cascading manner (eg, between a common control region or a common search space and one or more UE-specific control regions or UE-specific search spaces).

[0089] The carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a certain number of predefined carrier bandwidths according to a particular radio access technology (eg, 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). In some examples, each UE 115 served may be configured to operate in parts or all of the carrier's bandwidth. In other examples, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a predefined portion or range (eg, a set of subcarriers or RBs) in a carrier (eg, in an "in-band" deployment of the narrowband protocol type).

[0090] In a system using MCM technologies, a resource element may consist of one symbol period (eg, the duration of one modulation symbol) and one subcarrier, with the symbol period and subcarrier spacing being inversely related. The number of bits carried by each resource element may depend on the modulation scheme (eg, the order of the modulation scheme). Thus, the more resource elements that UE 115 receives and the higher the modulation scheme order, the higher the data rate can be for UE 115. In MIMO systems, a wireless resource can mean a combination of RF spectrum resource, temporal resource, and spatial resource (eg, spatial layers), and the use of multiple spatial layers may further increase the data rate for communication with UE 115.

[0091] Devices of wireless communication system 100 (eg, base stations 105 or UE 115) may be hardware configured to communicate over a particular carrier bandwidth, or may be configurable to communicate over one of a set of carrier bandwidths. In some examples, wireless communication system 100 may include base stations 105 and/or UEs 115 that support simultaneous communication via carriers associated with more than one other carrier bandwidth.

[0092] Wireless communication system 100 may communicate with UE 115 on multiple cells or carriers, a feature that may be referred to as carrier aggregation mode or multi-carrier mode operation. UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used with FDD and TDD component carriers.

[0093] In some cases, wireless communication system 100 may use enhanced component carriers (eCCs). The ECC may be distinguished by one or more features, including a wider carrier or frequency channel bandwidth, a shorter symbol duration, a shorter TTI duration, or a modified control channel configuration. In some cases, eCC may be associated with a carrier aggregation configuration or a dual connection mode configuration (eg, when multiple serving cells have a sub-optimal or non-ideal backhaul). The ECC may also be configured to be used in unlicensed spectrum or shared spectrum (eg, in which more than one operator is allowed to use the spectrum). An ECC characterized by a wide carrier bandwidth may include one or more segments that can be used by UE 115 that do not allow monitoring of the entire carrier bandwidth or are otherwise configured to use a limited carrier bandwidth (e.g., to save power ).

[0094] In some cases, the eCC may use a symbol duration different from the symbol duration of other component carriers, which may include using a shorter symbol duration compared to the symbol durations of other component carriers. A shorter symbol duration may be associated with increased spacing between adjacent subcarriers. A device such as UE 115 or base station 105 using eCC can transmit wideband signals (eg, according to frequency channel or carrier bandwidths of 20, 40, 60, 80 MHz, etc.) with reduced symbol durations (eg, 16.67 microseconds). The TTI in eCC may consist of one or more symbol periods. In some cases, the TTI duration (ie, the number of symbol periods in a TTI) may be variable.

[0095] Wireless communication system 100 may be an NR system that may use any combination of licensed, shared, and unlicensed spectrum bands, among others. Flexibility in eCC symbol duration and subcarrier spacing may allow for the use of eCC across multiple spectra. In some examples, shared NR spectrum can increase spectrum efficiency and spectral efficiency, particularly through dynamic vertical (eg, frequency domain) and horizontal (eg, time domain) resource sharing.

[0096] In some aspects, UE 115 may receive, from base station 105, an SSB from the SSB QCL set, the SSB comprising a parameter indicator indicating information associated with a plurality of downlink control channel locations corresponding to the SSB QCL set. UE 115 may determine, at least in part based on the parameter, a plurality of downlink control channel locations corresponding to the SSB QCL set. UE 115 may receive a downlink grant for system information based at least in part on monitoring one or more downlink control channel locations from a plurality of downlink control channel locations. UE 115 may receive system information based at least in part on a downlink grant. UE 115 may establish a connection with base station 105 based at least in part on the SSB and the received system information block.

[0097] In some aspects, base station 105 may transmit a plurality of SSBs, wherein the plurality of SSBs comprise a set of QCL SSBs, wherein each SSB of the plurality of SSBs comprises a parameter indicator indicating information associated with the plurality of downlink control channel locations corresponding to the QCL set SSB. Base station 105 may transmit, at least in part based on the parameter, a downlink grant for system information over a plurality of downlink control channel locations corresponding to the SSB QCL set. The base station 105 may transmit system information according to the transmission grant. Base station 105 may establish a connection with UE 115 based at least in part on a block of synchronization signals and system information.

[0098] In some aspects, UE 115 may receive system information comprising a bitmap indicating a subset of SSBs transmitted from the SSB set, wherein the system information signal further indicates the maximum number of SSBs available for use, wherein the maximum number of SSBs available for use , exceeds the total number of SSBs in the SSB set. UE 115 may configure the rate negotiation based at least in part on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use. UE 115 may receive the PDSCH transmission based at least in part on the rate negotiation.

[0099] In some aspects, base station 105 may transmit system information comprising a bitmap indicating a subset of SSBs transmitted from the set of SSBs, wherein the control signal further indicates a maximum number of SSBs available for use, wherein the maximum number of SSBs available for use , exceeds the total number of SSBs in the SSB set. Base station 105 may configure the rate negotiation based at least in part on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs to use. Base station 105 may perform PDSCH transmission based at least in part on rate matching.

[0100] FIG. 2 illustrates an example of a wireless communication system 200 that supports a control search space overlap indicator in accordance with aspects of the present disclosure. In some examples, wireless communication system 200 may implement aspects of wireless communication system 100. Typically, wireless communication system 200 may include a base station 205 and UE 210, which may be examples of the respective devices described herein. In some aspects, base station 205 may be considered a potential or current serving base station from the perspective of UE 210.

[0101] In some aspects, the wireless communication system 200 may be configured to support various aspects of the described technologies for the search control space overlap indicator. In general, legacy networks typically define a one-to-one mapping between SSB and downlink control channel location (eg, PDCCH location). For example, each SSB may have an associated index, and this index may correspond to or otherwise be associated with a particular downlink control channel location (eg, such as the location of a control channel carrying a grant for additional system information). A UE (such as UE 210) attempting to establish a connection with base station 205 would typically monitor and detect an SSB having an associated index and, based on the SSB index, identify the corresponding downlink control channel location. As one non-limiting example, an initial access based UE (e.g., UE 210) may detect an SSB having index 5. An initial access based UE may know that SSB index 5 corresponds to a particular downlink control channel location, e.g., based on a lookup table or some other configured information. Based on the initial access, the UE may monitor the location of the downlink control channel corresponding to SSB index 5 to receive a downlink grant for resources carrying system side information (e.g., resources for PDSCH that carries RMSI, which can also referred to as RMSI PDSCH). Conventionally, the location of the downlink control channel may be carried or transmitted in a bit or field of a broadcast channel (such as a Physical Broadcast Channel (PBCH)) of the base station 205.

[0102] However, such conventional technologies may not be applicable in some configurations. For example, in some aspects, the number of SSBs that are available or otherwise usable by base station 205 may exceed the number of available downlink control channel locations, eg, accordingly, the one-to-one mapping technique may not be applicable. In addition, in a mmW network, base station 205 may transmit its SSB using beamformed transmissions that are transmitted over the coverage area of base station 205. In some aspects, this may include transmitting, by base station 205, a plurality SSB QCLs in its coverage area that exceed the available corresponding downlink control channel locations. However, it should be understood that QCL SSB is not limited to mmW network and may instead mean non-mmW networks.

[0103] In addition, some wireless networks may operate in the frequency band of the shared or unlicensed radio frequency spectrum, in which a listen before you speak (LBT) procedure must be performed on the channel before transmissions can occur. In this example, the LBT procedure performed by the base station 205 may fail for some instances of the configured SSB transmission, which may further confuse the network.

[0104] In some aspects, SSBs may be transmitted within a particular acquisition period (eg, such as a discovery reference signal (DRS) period). On the other hand, in some cases, the LBT procedure may succeed for some SSB transmissions within a DRS period, but fail for other instances of an SSB transmission within a DRS period. Accordingly, the configured pattern of SSB transmissions may be aborted in the DRS depending on the results of the LBT procedure, eg, based on the success or failure of the LBT procedure. Accordingly, aspects of the described technologies provide a mechanism in which an overlapping (e.g., many-to-one) relationship between multiple SSB indices corresponding to downlink control channel locations can be maintained by base station 205 and/or UE 210.

[0105] For example, base station 205 may support multiple SSBs 215 available for transmission. In some aspects, this may include a set of QCL SSBs transmitted in beamformed transmissions swept around the coverage area of base station 205. For example, the first SSB 215-a may be transmitted in the first beamformed direction, the second SSB 215-b may be transmitted in the second beamformed direction, third SSB 215-c may be transmitted in the third beamformed direction, fourth SSB 215-d may be transmitted in the fourth beamformed direction, fifth SSB 215-e may be transmitted in the fifth beamformed direction , etc. Broadly, each SSB 215 may carry or transmit an indication of specific timing information applicable by UEs based on initial access (eg, UE 210) that are looking for a base station to connect. For example, each SSB 215 may carry or transmit timing information (eg, timing information, frequency information, spatial information, and the like). The initial access based UE may use this information to discover or otherwise receive additional system information from the base station 205 to establish a connection between the base station 205 and the initial access based UE. Accordingly, base station 205 may transmit multiple SSBs 215, wherein at least one of SSBs 215 (eg, SSB 215-d) may be detected or otherwise received by UE 210.

[0106] In accordance with aspects of the described technologies, SSBs 215 transmitted by base station 205 may comprise or otherwise form a set of SSB QCLs. For example, base station 205 may transmit multiple instances of SSB 215 within a given period, such as a DRS period, within a certain number of slots/frames, and the like. In some aspects, a set of QCL SSBs may consist of SSBs 215 having an identical (or substantially similar) QCL configuration. For example, and when base station 205 transmits SSB 215 at two times within a period, two instances of SSB 215-d may be considered a QCL SSB set. In an example in which base station 205 transmits SSB 215 three times within a period, three instances of SSB 215-d may be considered a QCL SSB set. Accordingly, the base station 205 may transmit a plurality of SSBs 215 (eg, SSBs 215-a, 215-b, 215-c, 215-d, and 215-e) in a repetitive manner such that the QCL SSB 215 may include multiple instances of an identical SSB 215 transmission (eg, multiple instances of SSB 215-d). However, it should be understood that each instance of the SSB 215 in the QCL SSB set must have its own numerical index. For example, the first instance of SSB 215-d might have index 0, while the next instance of SSB 215-d might have index 4 (or some other pattern). In some aspects, the transmission of SSB 215 may also have a broadcast channel, such as part of the Physical Broadcast Channel (PBCH) of SSB 215.

[0107] In some aspects, each SSB 215 transmitted by base station 205 may also carry or transmit a parameter indicator that indicates or otherwise conveys information associated with a plurality of downlink control channel locations corresponding to the SSB QCL set. In some aspects, a parameter (eg, parameter X) may allow overlapping downlink control channel location (eg, downlink control channel location may correspond to SSB indices from the SSB QCL set). In some aspects, the downlink control channel may mean a Type 0 PDCCH, such as a common search space PDCCH. In some aspects, the parameter X may be an integer that is not greater than a certain value (eg, not greater than 8, which may be the agreed maximum number of SSBs 215 available for transmission). The X parameter may use three bits to carry or transmit information. In some aspects, the parameter X may be a subset of integers, and the set of values that X may take may be of size 1/2/4/8, etc. (e.g., a power of two) to reduce the number bits required to convey information. In some aspects, the X parameter may be common to all SSBs 215 transmitted by base station 205. For example, the X parameter may be common to the entire PBCH and all SSBs 215 actually transmitted. broadcast parameter channel. In an example in which base station 205 transmits SSB 215 in beamformed transmissions, the X parameter may not necessarily be identical to the number of beams, e.g., may be large depending on the choice of base station 205.

[0108] Accordingly, UE 210 (eg, UE based on initial access in this case) may receive SSB 215 (eg, SSB 215-d) from the SSB QCL set (eg, multiple instances of SSB 215-d and/or multiple SSBs 215 having the same or similar QCL configuration). UE 210 may recover the X parameter after the received SSB and use the parameter to determine the set of downlink control channel locations corresponding to the SSB QCL set. As explained, each SSB 215 instance may have its own associated index value (eg, index x SSB 215). As one example, UE 210 may receive SSB 215-d having an SSB index of one (eg x=1) and the parameter may indicate a value corresponding to the SSB QCL set (eg X=4). For discovery on a downlink control channel (eg, a PDCCH carrying a grant for the RMSI PDSCH), UE 210 may search or monitor each downlink control channel location that corresponds to SSB z, where z mod X=x mod X In the example where x=1 and X=4, UE 210 receives or otherwise keeps track of downlink control channel (PDCCH) locations that correspond to SSB indices 1, 5, 9, and so on. In some aspects, the PDCCH monitoring period z may only occur in timeslots and radio frames in which SSB can potentially be transmitted, so that UE 210 can ascertain whether or not the PDCCH monitoring period is a potential SSB time slot, in addition to the condition modulo z mod X=x mod X to determine whether or not to monitor the PDCCH for control channel information during this monitoring period. In some aspects, the location of the downlink control channel may be a function of the radio frame number, which may be determined via the PBCH, and the maximum number of SSB transmission opportunities.

[0109] Accordingly, UE 210 may detect or otherwise receive SSB 215 having indices of 1 and, based on parameter X, determine that SSB indices of 5, 9, etc. are also associated with certain channel locations. downlink control. In some aspects, the downlink control channel (eg, RMSI PDCCH) may be transmitted in the next frame, the LBT procedure may be independent, and the starting point may be later than x=1, and therefore UE 210 may continue searching. This allows the UE 210 to be able to identify locations to be monitored for a downlink control channel that correspond to the SSB QCL set.

[0110] Accordingly, UE 210 may receive a downlink grant for system information (eg, PDSCH RMSI) based on monitoring and receiving a downlink control channel (eg, PDCCH) that carries or transmits a downlink grant. communication lines. Based on the downlink grant, UE 210 may receive system information (eg, RMSI) and establish a connection with base station 205 according to the received SSB 215-d (in this example) and system information.

[0111] Another complexity associated with legacy networks may relate to SSB 215 rate negotiation. indicates which SSBs 215 in the set of available SSBs 215 are being transmitted. For example, base station 205 may have a set of SSBs 215 that may be transmitted (eg, each of SSBs 215-a through 215-e) but may actually only transmit a subset of SSBs 215 (eg, such as SSBs 215-a, 215-c , 215-e, etc.). Conventionally, UE 210 may receive system information in one PDSCH transmission and use the information indicated in the bitmap to configure or otherwise perform rate matching between resource blocks/symbols used by the indicated SSBs in subsequent PDSCH transmissions. However, such conventional techniques rely on the fact that the set of and/or actually transmitted SSBs 215 are identical in all frames. Such conventional technologies do not support a configuration in which the available and/or actually transmitted SSBs 215 change (eg, within a discovery period, between different frames or sets of frames, etc.). Accordingly, UE 210 may not be able to configure or otherwise perform rate negotiation in a situation in which the available and/or actually transmitted SSBs 215 change.

[0112] Additionally, conventional technologies set a bitmap size corresponding to the maximum size of available SSB transmission opportunities for a licensed carrier on which SSB can always be transmitted. On an unlicensed carrier on which transmissions must undergo an LBT procedure prior to transmission, conventional technologies do not configure a much larger number of available SSB transmission opportunities despite the fact that a plurality of SSB transmission opportunities may not be applicable in any particular instance due to LBT. - failure. Accordingly, the size of the bitmap may increase for the largest size that is expected to be used in an unlicensed system, which entails a high amount of overhead. Therefore, alternative solutions are required.

[0113] Accordingly, aspects of the described technologies provide a mechanism (eg, a rule) that supports the ability of the UE 210 to configure or otherwise perform rate negotiation for the situation where the available and/or actually transmitted SSBs 215 change. In some aspects, a bitmap specified in the system information (eg, an 8-bit bitmap) may be used. However, the system information may also carry or convey an indication of the maximum number of SSBs 215 available for use. In some aspects, the maximum number of SSBs 215 available for use may exceed the total number of SSBs 215 indicated by the bitmap (eg, due to the size of the bitmap).

[0114] For example, system information (eg, RMSI) may carry or transmit a bitmap that indicates a subset of SSBs 215 transmitted from SSB 215. As one example, the bitmap may be set to 10101010 to indicate that SSB 215 indexes 0, 2, 4 and 6 are actually transmitted, and SSB 215 indexes 1, 3, 5 and 7 are not transmitted. Thus, the set of SSBs 215 may include SSBs 215 having indices 0-7, while the subset of actually transmitted SSBs 215 includes only SSBs 215 having indices 0, 2, 4, and 6.

[0115] In some aspects, the maximum number of SSBs 215 available for use may exceed the set of SSBs 215 indicated by the bitmap (eg, due to the size of the bitmap). For example, system information (eg, RMSI) may indicate (eg, in a parameter) the maximum number of SSB 215 positions available for use. As one non-limiting example, the maximum number of SSBs 215 available for use may be 2, 16, 24, 32, or some other number of SSBs 215. In some aspects, the maximum number of SSBs 215 available for use may indicate potential SSB locations. 215 occurring within a particular time window, such as within a DRS, within a particular set of time slices or frames, and the like.

[0116] Based on the reception of system information, UE 210 may determine or otherwise detect that there is a maximum of 16 (in one example) SSB 215 available for use, and that the bitmap indicates the pattern of SSB 215 actually transmitted in a set of SSBs 215 indicated by a bitmap (eg, on, off, on, off, etc., in the above example for the first eight SSBs, where the bitmap size is eight). According to aspects of the described technologies, UE 210 may repeat the pattern in the bitmap for SSBs 215 transmitted after the set of SSBs 215 indicated by the bitmap. For example, for the first eight positions of SSB 215, UE 210 may determine that SSBs 215 having indices of 0, 2, 4, and 6 are actually transmitted, and SSBs 215 having indices of 1, 3, 5, and 7 are not transmitted. . Repeating the pattern may include determining, by UE 210, that SSBs 215 having indices of 8, 10, 12, 14, etc. are being transmitted and SSBs 215 having indices of 9, 11, 13, 15 etc. are not transmitted, for the purposes of rate matching for the subsequent PDSCH. Accordingly, based on the bitmap and the parameter indicated in the system information, the UE 210 may use the rule that SSBs 215 occurring after a subset of SSBs 215 (or instead after a set of SSBs 215) and within the maximum number of SSBs 215 are repeated according to the pattern specified in the bitmap.

[0117] Accordingly, UE 210 may receive a bitmap and indicator of the maximum number of SSBs 215 available for use (eg, in the first RMSI PDSCH) and use this information to configure rate negotiation for receiving PDSCH transmissions. In some aspects, UE 210 may use a bitmap and indicator of the maximum number of SSBs 215 available for use in order to configure or otherwise perform rate negotiation in subsequent PDSCH transmissions from base station 205. For example, UE 210 may use configured rate negotiation. for subsequent PDSCH transmissions by rate negotiation for SSB 215 indicated as being transmitted in (or simultaneously with) subsequent PDSCH transmissions. This allows rate matching, by UE 210, for all potential SSB 215 transmissions, as indicated by the repetition bitmap, up to the maximum number of SSB 215 available for use. In some aspects, UE 210 may further configure rate matching resource sets to negotiate rate with non-transmitted SSBs (eg, SSBs 215 having indices of 1, 3, 5, etc., up to a maximum number of SSBs 215, available for use). Accordingly, the UE 210 may receive the PDSCH transmission according to the rate negotiation configured based on the bitmap and the indication of the maximum number of SSBs 215 available for use.

[0118] In some aspects, the described techniques for configuration rate negotiation may be associated with a particular acquisition period (eg, such as DRS). For example, various aspects of the transmission of SSB 215 may change periodically, as needed, according to a schedule, and the like. Accordingly, base station 205 may update SSB 215 in response to changes in the configuration of SSB 215 transmissions and associated time period or window. In one example, the configuration for transmitting SSB 215 may change for each or some or all of the DRS periods.

[0119] FIG. 3 illustrates an example SSB configuration 300 that supports the control search space overlap indicator in accordance with aspects of the present disclosure. In some examples, SSB configuration 300 may implement aspects of wireless communication systems 100 and/or 200. Aspects of SSB configuration 300 may be implemented by a base station and/or UE, which may be examples of the respective devices described herein.

[0120] Broadly, SSB configuration 300 illustrates one example of how SSB 305 can be transmitted in accordance with aspects of the described technologies. In some aspects, a base station may be configured to transmit multiple SSBs 305 (with only one SSB 305 tagged for ease of reference) to one or more UEs operating in its coverage area. For example, SSBs 305 having indices of 0-7 may be considered the first set of SSBs that are capable of being transmitted during a specified time period or window, such as DRS window 215. Accordingly, a base station may transmit a plurality of SSBs 305 having indices 0-7 during the first DRS window 310-a, transmit a plurality of SSBs 305 having indices 0-7 during a second DRS window 310-b, and transmit a plurality of SSBs 305 having indices 0-7 during third DRS window 310-c. In some aspects, the number and/or configuration for SSB 305 may change between DRS windows 310.

[0121] Broadly, SSBs 305 may be used by the UE on an initial access basis to detect synchronization information (at least to some extent) for a transmitting base station. For example, each SSB 305 may carry or transmit a different frequency, time sync, spatial, and the like. information usable by the UE in order to establish a connection with the base station. In some aspects, multiple SSBs may be transmitted within a given window or time period, such as DRS window 315.

[0122] In some aspects, the SSB set 305 may include the SSB QCL set. In some aspects, the number of SSBs 305 in the SSB QCL set may be consistent for a given DRS window 310, but may be identical or may vary between DRS windows 310. In some aspects, the SSB set 305 may include multiple SSB QCL sets. As one non-limiting example, SSBs 305 having indices of 0 and 4 may form a first SSB QCL set (indicated by a forward skew hash pattern), SSBs 305 having indices of 1 and 5 may form a second SSB QCL set (indicated by cross hash pattern), SSBs 305 having indices of 2 and 6 may form a third set of SSB QCLs (indicated by a backsloping hash pattern), and SSBs 305 having indices of 3 and 7 may form a fourth SSB QCL set (indicated by using the horizontal line hash pattern).

[0123] Conventionally, the UE may receive SSB 305 based on the initial access, and based on the received SSB index 305, the UE may know that the index is associated with the corresponding downlink control channel location (e.g., time, frequency, space, or other location). for the UE to use for monitoring for PDCCH signals). However, aspects of the described technologies support a mechanism in which additional candidate positions of SSBs 305 can be configured. Thus, multiple SSBs 305 may include more than the illustrated eight SSBs 305 shown in FIG. 3, for example, may include 12, 16, or some other number of potential SSB 305 positions. In some aspects, the number of SSBs actually transmitted may be less than the number of possible SSB 305 positions. In this situation, each SSB QCL set may include more two SSB 305, explained in the above example. For example, the first set of QCL SSBs may include SSBs 305 with indices of 0, 4, 8 (not shown), 12 (also not shown), and so on.

[0124] In addition, some wireless networks may operate in an mmW network in which the base station must perform an LBT procedure prior to transmitting each (or some or all) SSB 305. It may be appreciated that not every LBT procedure may be successful, and therefore the base station may not be able to transmit SSB 305 until the LBT procedure is successfully completed. As a first example, and during DRS window 310-a, the LBT procedure may be successful such that the base station is able to start transmitting SSB 305 starting at SSB index 0. However, in the second example and during DRS windows 310-b, the LBT procedure may not pass initially, but instead pass or succeed in time for the base station to start transmission of SSBs 305 starting at SSB index 2. In the third example, and during the DRS window 310-c, the LBT procedure may not proceed until the time when the SSB 305 having index 4 is scheduled for transmission. Accordingly, the number of SSBs 305 transmitted may vary depending on whether or not the LBT procedure is successful. In some examples, the base station may choose to transmit only four SSBs out of a configured eight to minimize the number of SSBs actually transmitted, while ensuring that the SSBs from each of the four QCL SSB sets are transmitted at least once.

[0125] All of these complexities can create problems for an initial access based UE wishing to establish a connection with a base station. For example, the UE may detect or otherwise receive an SSB 305 having an index of 1. Traditionally, the UE would use the received SSB index 305 to identify a location for monitoring a downlink control channel (eg, PDCCH), since conventional technologies use the "one -to-one" between the SSB index 305 and the corresponding downlink control channel location. However, this approach can be problematic when multiple SSB indices overlap with the same (or nearly identical) downlink control channel location, such as when the SSB QCL set is used, or when some SSB locations are not transmitted due to LBT failures. For example, upon detecting an SSB at location 1, in legacy systems, the UE may search for a PDCCH corresponding to an identical QCL near SSB location 1 in subsequent DRS periods. However, in subsequent DRC periods, SSB and system information may not be sent at location 1 due to an LBT failure, but may be sent at location 5. Since location 5 and location 1 have the same QCL, if the UE searches for PDSCH/system information near location 5, it must be able to receive system information.

[0126] Accordingly, aspects of the described technologies provide a mechanism where each SSB 305 has a corresponding index, but a set of SSB QCLs can be associated with an identical (or substantially similar) downlink control channel location. In some aspects, this may include configuring, by the base station, the SSB to include or otherwise transmit a parameter indicator indicating information associated with downlink control channel locations corresponding to the SSB QCL set. For example, a parameter (eg, parameter X) may be an integer or a subset of integers, depending on the number of bits used to convey the parameter indicator in each SSB 305. Typically, each SSB 305 in an SSB QCL set may have identical or almost similar to QCL-configuration. In some examples, the parameter may not necessarily be tied to the number of beams used to transmit SSB 305.

[0127] The UE may receive SSB 305 (eg, SSB index 1 or x=1) and determine the parameter indicated in SSB 305. The UE may use this information to determine the location(s) of downlink control channels that correspond to the QCL SSB set. Typically, the location(s) of the downlink control channels may mean the time, frequency, space, or some other resource used by the base station to transmit the downlink control channel. The UE may receive (eg, by monitoring) certain downlink control channel locations that correspond to the SSB QCL set in order to receive a downlink grant for system information (eg, RMSI PDSCH) in at least one from downlink control channel locations. The UE may receive system information according to the transmission grant and establish a connection with the base station based on the received SSB 305, the system information, and the like.

[0128] As explained, in some aspects, a parameter may carry or transmit an offset indicator between successive SSBs 305 in a QCL SSB set. In the example explained above, SSBs 305 having indexes 0 and 4 may be considered the first set of SSB QCLs, wherein, in this example, the parameter may indicate a value of "4" to inform the UE that every fourth SSB 305 may have or otherwise use an identical or similar QCL configuration and/or may be associated with an identical or similar PDCCH location. Accordingly, a UE receiving SSB 305 with index 1 may know that SSB 305 with index 5 may use the same or substantially the same QCL configuration.

[0129] In some aspects, some or all of the SSB 305 may be carried or transmitted on the PBCH. Because the same parameter may be duplicated in each SSB 305, the UE may perform soft combining for multiple SSBs 305 to determine which parameter to indicate.

[0130] FIG. 4A and 4B illustrate examples of an SSB configuration 400 that supports the control search space overlap indicator in accordance with aspects of the present disclosure. In some examples, SSB configuration 400 may implement aspects of wireless communication systems 100 and/or 200 and/or SSB configuration 300. Aspects of SSB configuration 400 may be implemented by a base station and/or UE, which may be examples of appropriate devices, described in this document.

[0131] As explained, conventional technologies typically include carrying or transmitting, via the RMSI PDSCH, an 8-bit bitmap indicator indicating which set of the maximum 8 SSBs that are actually being transmitted. The PDSCH transmissions negotiate the rate for the resource blocks/symbols used by the indicated SSBs. However, this design decision is based on the fact that the set of SSBs actually transmitted in all frames is identical. Accordingly, conventional technologies do not support a scenario in which the actual number of SSBs transmitted and/or available may vary between frames, between DRS periods, and so on. Additionally, conventional technologies set a bitmap size corresponding to the maximum size of available SSB transmission opportunities for a licensed carrier on which SSB can always be transmitted. On an unlicensed carrier, on which transmissions must undergo an LBT procedure before transmission, one may want to configure a much larger number of available SSB transmission capabilities, since many SSB transmission capabilities may not be applicable in any particular instance due to LBT failure. Therefore, it is possible to increase the size of the bitmap to the largest size that is supposed to be used on an unlicensed system, which entails a high amount of overhead. Therefore, alternative solutions are required. Accordingly, aspects of the described technologies support improved rate negotiation behavior in such a scenario.

[0132] For example, the base station may transmit the maximum number of SSB 405 available for use. Typically, the maximum number of SSBs 405 available for use may indicate the possible positions at which SSB transmissions may occur. In the example illustrated in FIG. 4A, the maximum number of SSBs 405 available for use may include 16 SSB positions, while the maximum number of SSBs 405 available for use illustrated in FIG. 4B may include 12 SSB positions. Other configurations for the maximum number of SSB 405 available for use may also be used.

[0133] In some aspects, the bitmap used in traditional networks can be applied, at least in some aspects, in accordance with the described technologies. For example, the base station may transmit (and the UE may receive) system information (eg, RMSI PDSCH) that carries or transmits a bitmap indicator indicating a subset of the SSBs transmitted from the SSB set. With reference to the SSB configurations 400-a and 400-b, the bitmap may be set to "10101010" to indicate that the SSB set includes SSBs having indices 0-7. In this context, the SSB set may mean each of the SSBs having indices 0-7, wherein the subset of SSBs actually transmitted from the SSB set may include the SSBs having indices 0, 2, 4, and 6 (as illustrated by the hash pattern) . The information or pattern indicated in the bitmap may mean SSB 410 per bitmap.

[0134] However, the maximum number of SSBs 405 available for use in this scenario may exceed a set of SSBs (e.g., the maximum number of SSBs 405 available for use may be 16, as illustrated in FIG. 4A, or 12, as illustrated in Fig. 4B). Accordingly, the base station may also configure system information to carry or transmit an indicator of the maximum number of SSBs 405 available for use (eg, maximum used SSB positions). For example, the system information may include a bit or field configured to convey an indicator of the maximum number of SSBs available for use (eg, a fixed count of SSBs in use, a target location for the last SSB in use, and the like).

[0135] In some aspects, the UE may receive system information and recover the bitmap and indicator of the maximum number of SSBs available for use. The UE may use this information to configure rate matching for PDSCH transmissions. In some aspects, this may include repeating, by the UE, the pattern indicated in the bitmap for SSBs that occur after SSBs in the SSB set (eg, that occur after a subset of SSBs actually transmitted). In the example explained above, the pattern can generally mean a first SSB transmission (SSB-index 0), a second SSB not transmitted (SSB-index 1), a third SSB transmission (SSB-index 2), a fourth SSB not transmitting (SSB-index 3) etc. The UE may use this pattern for the remaining SSBs up to the maximum number of SSBs 405 available for use. For example, the UE may know that SSB Index 8 is to be transmitted, that SSB Index 9 is not to be transmitted, that SSB Index 10 is to be transmitted, and so on. (this is illustrated as "bitmap indicates repeated SSB 415"). Accordingly, the UE may use this information based on the bitmap and the maximum number of SSBs 405 available for use for PDSCH rate matching. References to the SSB corresponding to the SSB index to be transmitted may also indicate the UE's assumption of the SSB transmission regarding the PDSCH rate negotiation, the base station may not actually transmit that particular SSB. In some aspects, the UE may receive a bitmap and indicator of the maximum number of SSBs 405 available for use on the first PDSCH (eg, RMSI PDSCH) and use the configured rate negotiation in subsequent PDSCH transmissions (eg, and non-RMSI PDSCH transmissions). ). For example, the UE may negotiate the rate for SSB transmission during subsequent PDSCH transmissions.

[0136] In the example illustrated in FIG. 4B, the UE may use a bitmap (or a pattern indicated in the bitmap) and an indicator of the maximum number of used SSBs to determine that SSB index 8 is transmitted, that SSB index 9 is not transmitted, that SSB index 10 is transmitted. , and that SSB index 11 is not transmitted (again, this is illustrated as "bitmap indicates repeated SSB 415"). Accordingly, for subsequent PDSCH transmissions, the UE may use this information to negotiate the rate for the SSB actually transmitted.

[0137] FIG. 5 illustrates an example process 500 that maintains a control search space overlap indicator in accordance with aspects of the present disclosure. In some examples, process 500 may implement aspects of wireless communication systems 100, 200 and/or SSB configurations 300, 400. Aspects of process 500 may be performed by base station 505 and/or UE 510, which may be examples of the respective devices described in this document.

[0138] At 515, base station 505 may transmit (and UE 510 may receive) SSBs from the QCL SSB set. In some aspects, the SSB may carry or transmit a parameter indicator indicating information associated with a plurality of downlink control channel locations that correspond to the SSB QCL set. In some aspects, the parameter may carry or transmit an offset indicator between successive SSBs in the SSB QCL set. In some aspects, this may include transmitting by base station 505 (and receiving by UE 510) the PBCH portion of the SSB, eg, the PBCH portion may carry or transmit a parameter indicator. In some aspects, UE 510 may receive multiple instances of the SSB (or PBCH portions of the SSB) and use soft combining for the multiple SSBs in order to recover the parameter.

[0139] In some aspects, base station 505 may transmit multiple SSBs to one or more UEs located in its coverage area. In some aspects, each SSB may further transmit or indicate different synchronization information applicable by such UEs in order to synchronize, at least to some extent, with the base station 505.

[0140] At 520, UE 510 may determine, at least in part based on a parameter, a plurality of downlink control channel locations corresponding to the SSB QCL set. In some aspects, this may include determining, by UE 510, an index of each SSB from the SSB QCL set. UE 510 may use the index to determine a plurality of downlink control channel locations. In some aspects, this may be based on the frame in which the SSB is received and the parameter specified in the SSB. In some aspects, the plurality of downlink control channel locations may mean a common type 0 PDCCH search space.

[0141] At 525, base station 505 may transmit (and UE 510 may receive) a downlink grant for system information based at least in part on monitoring, by UE 510, of one or more downlink control channel locations. connections. In some aspects, this may include monitoring, by UE 510, each downlink control channel location from a plurality of downlink control channel locations in order to accept a downlink transmission grant. For example, UE 510 may determine that no downlink control information is detected during the first instance of a plurality of downlink control channel locations (eg, at the first downlink control channel location). Accordingly, UE 510 may monitor a second instance of a plurality of downlink control channel locations (e.g., at the second, third, fourth, etc. downlink control channel location, as needed) to detect a downlink transmission grant. connections.

[0142] At 530, base station 505 may transmit (and UE 510 may receive) system information according to a downlink grant. In some aspects, the system information may mean the RMSI indicated in the PDSCH transmission from base station 505. At 535, base station 505 and UE 510 may establish a connection based at least in part on the SSB received at 515 and system information.

[0143] FIG. 6 illustrates an example process 600 that maintains an overlap indicator of control search spaces in accordance with aspects of the present disclosure. In some examples, process 600 may implement aspects of wireless communication systems 100, 200 and/or SSB configurations 300, 400. Aspects of process 600 may be implemented by base station 605 and/or UE 610, which may be examples of the respective devices described in this document.

[0144] At 615, base station 605 may transmit (and UE 610 may receive) system information that carries or transmits a bitmap indicator indicating a subset of SSBs transmitted from the SSB set. In some aspects, the system information may also carry or convey an indicator of the maximum number of SSBs available for use. In some aspects, the maximum number of SSBs available for use may exceed the total number of SSBs in the SSB set. In some aspects, the system information is transmitted in the previous PDSCH transmission. In some aspects, the system information may mean the RMSI indicated in the previous PDSCH transmission.

[0145] At 620, UE 610 may configure rate negotiation based at least in part on a subset of SSBs indicated by the bitmap and an indicated maximum number of SSBs available for use. In some aspects, this may include repeating, by UE 610, the pattern in the bitmap for the SSB subset in the SSB set, as well as for SSBs occurring after the SSB subset and within the maximum number of SSBs available for use.

[0146] At 625, base station 605 may transmit (and UE 610 may receive) a PDSCH transmission based at least in part on rate matching. As explained, this may include transmitting system information in a previous PDSCH transmission while UE 610 performs PDSCH transmission with base station 605 through rate matching for SSBs transmitted in subsequent PDSCH transmissions. In some aspects, the PDSCH transmission may be received during an identical acquisition period (eg, DRS period) in which the maximum number of SSBs available for use may be transmitted.

[0147] FIG. 7 shows a block diagram 700 of an apparatus 705 that supports a control search space overlap indicator in accordance with aspects of the present disclosure. Device 705 may exemplify aspects of UE 115 as described herein. Device 705 may include a receiver 710, a communication manager 715, and a transmitter 720. Device 705 may also include a processor. Each of these components may communicate with each other (eg, via one or more buses).

[0148] The receiver 710 may receive information such as packets, user data, or control information associated with various traffic channels (e.g., control channels, data channels, and information associated with an overlap indicator of control search spaces, etc.) . Information may be communicated to other components of device 705. Receiver 710 may be an example of aspects of transceiver 1020 described with reference to FIG. 10. Receiver 710 may use a single antenna or a set of antennas.

[0149] The communication scheduler 715 may receive, from the base station, an SSB from the SSB QCL set, the SSB including a parameter indicator indicating information associated with the downlink control channel location set corresponding to the SSB QCL set, determine, based on the parameter , a set of downlink control channel locations corresponding to the SSB QCL set, receive a downlink transmission grant for system information based on monitoring one or more downlink control channel locations from the set of downlink control channel locations, receive system information on based on the downlink grant and establish a connection with the base station based on the SSB and received system information. The communication manager 715 may also receive system information including a bitmap indicating a subset of SSBs transmitted from the set of SSBs, wherein the system information signal further indicates the maximum number of SSBs available for use, where the maximum number of SSBs available for use exceeds the total number SSB in the SSB set, configure rate negotiation based on the subset of SSBs indicated by the bitmap and the specified maximum number of SSBs available for use, and receive transmission on the downlink physical shared channel based on the rate negotiation. Communication manager 715 may be an example of aspects of communication manager 1010 described herein.

[0150] The communication manager 715 or subcomponents thereof may be implemented in hardware, code (eg, software or firmware) executed by a processor, or any combination of the foregoing. When implemented in code executing by a processor, the functions of the communication manager 715 or subcomponents thereof may be performed by a general purpose processor, DSP, application specific integrated circuit (ASIC), FPGA or other programmable logic device, discrete logic element or transistor logic, discrete hardware components, or any combination of the foregoing intended to perform the functions described in this disclosure.

[0151] The communication manager 715 or its subcomponents may be physically located in different locations, which includes distributing such that portions of functions are implemented in different physical locations by one or more physical components. In some examples, the communication manager 715 or subcomponents thereof may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the communication manager 715 or subcomponents thereof may be combined with one or more other hardware components including, but not limited to, an I/O component, a transceiver, a network server, another computing device, one or more other components. described in this disclosure, or a combination of the above in accordance with various aspects of this disclosure.

[0152] Transmitter 720 may transmit signals generated by other components of device 705. In some examples, transmitter 720 may be co-located with receiver 710 in a transceiver module. For example, transmitter 720 may be an example of aspects of transmitter/receiver 1020 described with reference to FIG. 10. Transmitter 720 may use a single antenna or a set of antennas.

[0153] FIG. 8 shows a block diagram 800 of an apparatus 805 that supports a control search space overlap indicator in accordance with aspects of the present disclosure. Device 805 may exemplify aspects of device 705 or UE 115 as described herein. Device 805 may include a receiver 810, a communication manager 815, and a transmitter 850. Device 805 may also include a processor. Each of these components may communicate with each other (eg, via one or more buses).

[0154] The receiver 810 may receive information such as packets, user data, or control information associated with various traffic channels (e.g., control channels, data channels, and information associated with an overlap indicator of control search spaces, etc.) . Information may be communicated to other components of device 805. Receiver 810 may be an example of aspects of transceiver 1020 described with reference to FIG. 10. The receiver 810 may use a single antenna or a set of antennas.

[0155] The communication manager 815 may be an example of aspects of the communication manager 715 as described herein. The communication manager 815 may include a QCL SSB manager 820, a PDCCH location manager 825, an RMSI manager 830, a connection manager 835, an SSB parameter manager 840, and a rate negotiation manager 845. The communication manager 815 may be an example of aspects of the communication manager 1010 described herein.

[0156] The QCL SSB scheduler 820 may receive, from the base station, SSBs from the QCL SSB set, the SSB including a parameter indicator indicating information associated with the set of downlink control channel locations corresponding to the SSB QCL set.

[0157] The PDCCH location manager 825 may determine, based on the parameter, a set of downlink control channel locations corresponding to the SSB QCL set, and receive a downlink transmission grant for system information based on monitoring one or more downlink control channel locations. links from the set of downlink control channel locations.

[0158] The RMSI scheduler 830 may receive system information based on a downlink grant.

[0159] The connection manager 835 may establish a connection with a base station based on SSB and received system information.

[0160] The SSB parameter manager 840 may receive system information including a bitmap indicating a subset of SSBs transmitted from the SSB set, the system information signal further indicating the maximum number of SSBs available for use, wherein the maximum number of SSBs available for use , exceeds the total number of SSBs in the SSB set.

[0161] The rate negotiation manager 845 may configure the rate negotiation based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use, and receive a downlink physical shared channel transmission based on the rate negotiation.

[0162] Transmitter 850 may transmit signals received from other components of wireless device 805. In some examples, transmitter 850 may co-locate with receiver 810 in a transceiver module. For example, transmitter 850 may be an example of aspects of transmitter/receiver 1020 described with reference to FIG. 10. Transmitter 850 may use a single antenna or a set of antennas.

[0163] FIG. 9 shows a block diagram 900 of a communication manager 905 that maintains an overlap indicator of control search spaces in accordance with aspects of the present disclosure. Communication manager 905 may be an example of aspects of communication manager 715, communication manager 815, or communication manager 1010 described herein. The communication manager 905 may include a QCL SSB manager 910, a PDCCH location manager 915, an RMSI manager 920, a connection manager 925, a PBCH manager 930, an SSB index manager 935, an SSB parameters manager 940, a rate negotiation manager 945, an SSB template manager 950; and a PDSCH location manager 955. Each of these modules can communicate directly or indirectly with each other (for example, via one or more buses).

[0164] The QCL SSB scheduler 910 may receive, from the base station, SSBs from the QCL SSB set, the SSB including a parameter indicator indicating information associated with the set of downlink control channel locations corresponding to the SSB QCL set. In some cases, the parameter includes an offset indicator between successive SSBs in a QCL SSB set.

[0165] The PDCCH location manager 915 may determine, based on the parameter, a set of downlink control channel locations corresponding to the SSB QCL set. In some examples, PDCCH location manager 915 may receive a downlink grant for system information based on monitoring one or more downlink control channel locations from a set of downlink control channel locations. In some examples, the PDCCH location manager 915 may determine that the set of downlink control channel locations is based on the frame in which the SSB is received and the parameter specified in the SSB.

[0166] In some examples, the PDCCH location manager 915 may track each downlink control channel location from the set of downlink control channel locations. In some examples, PDCCH location manager 915 may determine that no downlink control information has been detected during the first instance of a set of downlink control channel locations. In some examples, the PDCCH location manager 915 may monitor, based on a parameter, a second instance of a set of downlink control channel locations in order to detect a downlink grant. In some cases, the downlink control channel locations of a set of downlink control channel locations include common search spaces of a Type 0 physical downlink control channel.

[0167] The RMSI scheduler 920 may receive system information based on a downlink grant.

[0168] The connection manager 925 may establish a connection with a base station based on SSB and received system information.

[0169] The SSB parameter manager 940 may receive system information including a bitmap indicating a subset of SSBs transmitted from the SSB set, wherein the system information signal further indicates a maximum number of SSBs available for use, wherein the maximum number of SSBs available for use , exceeds the total number of SSBs in the SSB set.

[0170] The rate negotiation manager 945 may configure rate negotiation based on a subset of SSBs indicated by the bitmap and an indicated maximum number of SSBs available for use.

[0171] In some examples, rate negotiation manager 945 may receive a transmission on a downlink physical shared channel based on rate negotiation.

[0172] The PBCH scheduler 930 may receive an SSB physical broadcast channel portion, the SSB physical broadcast channel portion including a parameter indicator. In some examples, PBCH scheduler 930 may perform soft combining for the SSB set. In some cases, the parameter indicator is common to each SSB in a set of SSBs.

[0173] The SSB index manager 935 may determine the indexes of each SSB in the SSB QCL set. In some examples, the SSB index manager 935 may, wherein determining the set of downlink control channel locations is based on a specific index of each SSB in the SSB QCL set.

[0174] The SSB pattern manager 950 may repeat the pattern in the bitmap for the SSB subset in the SSB set and for SSBs occurring after the SSB subset and within the maximum number of SSBs available for use.

[0175] The PDSCH location manager 955 may receive a previous physical downlink shared channel transmission including system information.

[0176] In some examples, the PDSCH location manager 955 may decode the system information to identify the bitmap, with no rate matching performed for the previous physical downlink shared channel. In some cases, a transmission on a physical downlink shared channel is received during an identical discovery period in which the maximum number of SSBs available for use can be transmitted.

[0177] FIG. 10 shows a diagram of a system 1000 including an apparatus 1005 that supports an overlap indicator of control search spaces in accordance with aspects of the present disclosure. Device 1005 may be an example of or include components of device 705, device 805, or UE 115 as described herein. Device 1005 may include components for bi-directional voice and data communications, including components for transmitting and receiving communications, including a communications manager 1010, an I/O controller 1015, a transceiver 1020, an antenna 1025, a memory 1030, and processor 1040. These components may communicate electronically via one or more buses (eg, via bus 1045).

[0178] The communication scheduler 1010 may receive, from the base station, an SSB from the SSB QCL set, the SSB including a parameter indicator indicating information associated with the downlink control channel location set corresponding to the SSB QCL set, determine, based on the parameter , a set of downlink control channel locations corresponding to the SSB QCL set, receive a downlink transmission grant for system information based on monitoring one or more downlink control channel locations from the set of downlink control channel locations, receive system information on based on the downlink grant and establish a connection with the base station based on the SSB and received system information. The communication manager 1010 may also receive system information including a bitmap indicating a subset of the SSBs transmitted from the set of SSBs, the system information signal further indicating the maximum number of SSBs available for use, wherein the maximum number of SSBs available for use exceeds the total number SSB in the SSB set, configure rate negotiation based on the subset of SSBs indicated by the bitmap and the specified maximum number of SSBs available for use, and receive transmission on the downlink physical shared channel based on the rate negotiation.

[0179] The I/O controller 1015 may control the input and output signals for the device 1005. The I/O controller 1015 may also control peripheral devices not integrated into the device 1005. In some cases, the I/O controller 1015 may represent a physical connection or port for an external peripheral. In some cases, the I/O controller 1015 may use an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or other known operating system. In other cases, the I/O controller 1015 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I/O controller 1015 may be implemented as part of the processor. In some cases, the user may interact with the device 1005 through the I/O controller 1015 or through hardware components controlled by the I/O controller 1015.

[0180] The transceiver 1020 may communicate bidirectionally, via one or more antennas, wired or wireless links, as described above. For example, transceiver 1020 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1020 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission and demodulate the packets received from the antennas.

[0181] In some cases, the wireless device may include a single antenna 1025. However, in some cases, the device may have more than one antenna 1025, which may be capable of transmitting or receiving multiple wireless transmissions in parallel.

[0182] The storage device 1030 may include RAM and ROM. The memory device 1030 may store a computer-readable computer-executable code 1035 including instructions that, when executed, instruct the processor to perform the various functions described herein. In some cases, the storage device 1030 may include, among other things, a BIOS that may control the basic operation of the hardware or software, such as interaction with peripheral components or devices.

[0183] The processor 1040 may include an intelligent hardware device (e.g., a general purpose processor, DSP, CPU, microcontroller, ASIC, FPGA, programmable logic device, discrete logic element or transistorized logic component, discrete hardware component, or any combination of the above). In some cases, processor 1040 may be configured to control the storage array using a storage controller. In other cases, a memory controller may be integrated into the processor 1040. The processor 1040 may be configured to execute machine-readable instructions stored in the memory device (eg, memory 1030) to cause the device 1005 to perform various functions (eg, functions or tasks that support the control search space overlap indicator).

[0184] Code 1035 may include instructions for implementing aspects of the present disclosure including instructions for supporting wireless communication. Code 1035 may be stored on a non-volatile computer-readable medium such as system storage or other type of storage device. In some cases, code 1035 may not be directly executable by processor 1040, but may instruct the computer (eg, at compilation and execution) to perform the functions described herein.

[0185] FIG. 11 shows a block diagram 1100 of an apparatus 1105 that supports an overlap indicator of control search spaces in accordance with aspects of the present disclosure. Device 1105 may exemplify aspects of base station 105 as described herein. Device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1120. Device 1105 may also include a processor. Each of these components may communicate with each other (eg, via one or more buses).

[0186] The receiver 1110 may receive information such as packets, user data, or control information associated with various traffic channels (e.g., control channels, data channels, and information associated with an overlap indicator of control search spaces, etc.) . Information may be communicated to other components of device 1105. Receiver 1110 may be an example of aspects of transceiver 1420 described with reference to FIG. 14. The receiver 1110 may use a single antenna or a set of antennas.

[0187] The communication scheduler 1115 may transmit a set of SSBs, the SSB set including the SSB QCL set, each SSB of the SSB set including a parameter indicator indicating information associated with the set of downlink control channel locations corresponding to the SSB QCL set , transmit, based on the parameter, a downlink transmission grant for system information on the set of downlink control channel locations corresponding to the SSB QCL set, transmit system information according to the transmission grant, and establish a connection with the UE based on the SSB and the system information. The communication manager 1115 may also transmit system information including a bitmap indicating a subset of SSBs transmitted from the set of SSBs, wherein the system information further indicates the maximum number of SSBs available for use, wherein the maximum number of SSBs available for use exceeds the total number of SSBs. in the SSB set, configure rate negotiation based on the subset of SSBs specified by the bitmap and the specified maximum number of SSBs available for use, and perform downlink physical shared channel transmission based on the rate negotiation. The communication manager 1115 may be an example of aspects of the communication manager 1410 described herein.

[0188] The communication manager 1115 or subcomponents thereof may be implemented in hardware, code (eg, software or firmware) executed by a processor, or any combination of the foregoing. When implemented in code executing by a processor, the functions of the communication manager 1115 or its subcomponents may be performed by a general purpose processor, DSP, application specific integrated circuit (ASIC), FPGA or other programmable logic device, discrete logic element or transistor logic, discrete hardware components, or any combination of the foregoing intended to perform the functions described in this disclosure.

[0189] The communication manager 1115 or its subcomponents may be physically located in different locations, which includes distributing such that portions of functions are implemented in different physical locations by one or more physical components. In some examples, the communication manager 1115 or subcomponents thereof may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the communication manager 1115 or subcomponents thereof may be combined with one or more other hardware components including, but not limited to, an I/O component, a transceiver, a network server, another computing device, one or more other components. described in this disclosure, or a combination of the above in accordance with various aspects of this disclosure.

[0190] Transmitter 1120 may transmit signals generated by other components of device 1105. In some examples, transmitter 1120 may be co-located with receiver 1110 in a transceiver module. For example, transmitter 1120 may be an example of aspects of transmitter/receiver 1420 described with reference to FIG. 14. Transmitter 1120 may use a single antenna or a set of antennas.

[0191] FIG. 12 shows a block diagram 1200 of an apparatus 1205 that supports a control search space overlap indicator in accordance with aspects of the present disclosure. Device 1205 may exemplify aspects of device 1105 or base station 105 as described herein. Device 1205 may include a receiver 1210, a communication manager 1215, and a transmitter 1250. Device 1205 may also include a processor. Each of these components may communicate with each other (eg, via one or more buses).

[0192] The receiver 1210 may receive information such as packets, user data, or control information associated with various traffic channels (e.g., control channels, data channels, and information associated with control search space overlap indicator, etc.) . Information may be communicated to other components of device 1205. Receiver 1210 may be an example of aspects of transceiver 1420 described with reference to FIG. 14. The receiver 1210 may use a single antenna or a set of antennas.

[0193] The communication manager 1215 may be an example of aspects of the communication manager 1115 as described herein. The communication manager 1215 may include a QCL SSB manager 1220, a PDCCH location manager 1225, an RMSI manager 1230, a connection manager 1235, an SSB parameter manager 1240, and a rate negotiation manager 1245. The communication manager 1215 may be an example of aspects of the communication manager 1410 described herein.

[0194] The QCL SSB scheduler 1220 may transmit a set of SSBs, the SSB set including the QCL SSB set, each SSB of the SSB set including a parameter indicator indicating information associated with the set of downlink control channel locations corresponding to the set QCL SSB.

[0195] The PDCCH location manager 1225 may transmit, based on the parameter, a downlink grant for system information on the downlink control channel location set corresponding to the SSB QCL set.

[0196] The RMSI manager 1230 may transmit system information according to the transmission grant.

[0197] The connection manager 1235 may establish a connection with the UE based on SSB and system information.

[0198] The SSB parameter manager 1240 may transmit system information including a bitmap indicating a subset of SSBs transmitted from the SSB set, the system information further indicating a maximum number of SSBs available for use, wherein the maximum number of SSBs available for use, exceeds the total number of SSBs in the SSB set.

[0199] The rate negotiation manager 1245 may configure the rate negotiation based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use, and perform downlink physical shared channel transmission based on the rate negotiation.

[0200] Transmitter 1250 may transmit signals received from other components of wireless device 1205. In some examples, transmitter 1250 may co-locate with receiver 1210 in a transceiver module. For example, transmitter 1250 may be an example of aspects of transmitter/receiver 1420 described with reference to FIG. 14. Transmitter 1250 may use a single antenna or a set of antennas.

[0201] FIG. 13 shows a block diagram 1300 of a communication manager 1305 that maintains an overlap indicator of control search spaces in accordance with aspects of the present disclosure. Communication manager 1305 may be an example of aspects of communication manager 1115, communication manager 1215, or communication manager 1410 described herein. The communication manager 1305 may include a QCL SSB manager 1310, a PDCCH location manager 1315, an RMSI manager 1320, a connection manager 1325, a PBCH manager 1330, an SSB parameter manager 1335, a rate negotiation manager 1340, an SSB template manager 1345, and dispatcher 1350 PDSCH locations. Each of these modules can communicate directly or indirectly with each other (for example, via one or more buses).

[0202] The QCL SSB scheduler 1310 may transmit a set of SSBs, the SSB set including the QCL SSB set, each SSB of the SSB set including a parameter indicator indicating information associated with the set of downlink control channel locations corresponding to the set QCL SSB. In some cases, the parameter includes an offset indicator between successive SSBs in a QCL SSB set.

[0203] The PDCCH location manager 1315 may transmit, based on the parameter, a downlink grant for system information on the downlink control channel location set corresponding to the SSB QCL set.

[0204] The RMSI manager 1320 may transmit system information according to the transmission grant.

[0205] The connection manager 1325 may establish a connection with the UE based on SSB and system information.

[0206] The SSB parameter manager 1335 may transmit system information including a bitmap indicating a subset of SSBs transmitted from the SSB set, the system information further indicating a maximum number of SSBs available for use, wherein the maximum number of SSBs available for use, exceeds the total number of SSBs in the SSB set.

[0207] Rate negotiation manager 1340 may configure rate negotiation based on a subset of SSBs indicated by the bitmap and an indicated maximum number of SSBs available for use. In some examples, rate negotiation manager 1340 may perform downlink physical shared channel transmission based on rate negotiation.

[0208] The PBCH scheduler 1330 may transmit an SSB physical broadcast channel portion, the SSB physical broadcast portion including a parameter indicator. In some cases, the parameter indicator is common to each SSB in a set of SSBs.

[0209] The SSB template manager 1345 may repeat the pattern in the bitmap for transmitting the SSB subset in the SSB set and for the set of additional SSBs transmitted after the SSB subset and within the maximum number of SSBs available for use.

[0210] The PDSCH location manager 1350 may perform a previous transmission on a downlink physical shared channel including system information.

[0211] FIG. 14 shows a diagram of a system 1400 including an apparatus 1405 that supports an overlap indicator of control search spaces in accordance with aspects of the present disclosure. Device 1405 may be an example of or include components of device 1105, device 1205, or base station 105 as described herein. Device 1405 may include components for bi-directional voice and data communications, including components for transmitting and receiving communications, including a communications manager 1410, a network communications manager 1415, a transceiver 1420, an antenna 1425, a memory 1430, a processor 1440 and dispatcher 1445 communication between stations. These components may communicate electronically via one or more buses (eg, via a 1450 bus).

[0212] The communication scheduler 1410 may transmit a set of SSBs, the SSB set including the SSB QCL set, each SSB of the SSB set including a parameter indicator indicating information associated with the set of downlink control channel locations corresponding to the SSB QCL set , transmit, based on the parameter, a downlink transmission grant for system information on the set of downlink control channel locations corresponding to the SSB QCL set, transmit system information according to the transmission grant, and establish a connection with the UE based on the SSB and the system information. The communication manager 1410 may also transmit system information including a bitmap indicating a subset of SSBs transmitted from the set of SSBs, wherein the system information further indicates the maximum number of SSBs available for use, wherein the maximum number of SSBs available for use exceeds the total number of SSBs. in the SSB set, configure rate negotiation based on the subset of SSBs specified by the bitmap and the specified maximum number of SSBs available for use, and perform downlink physical shared channel transmission based on the rate negotiation.

[0213] The network communications manager 1415 may manage communications with the core network (eg, through one or more wired backhauls). For example, the network communication manager 1415 may manage data transmission for client devices, such as one or more UEs 115.

[0214] The transceiver 1420 may communicate bidirectionally, via one or more antennas, wired or wireless links, as described above. For example, transceiver 1420 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1420 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission and demodulate the packets received from the antennas.

[0215] In some cases, the wireless device may include a single antenna 1425. However, in some cases, the device may have more than one antenna 1425, which may be capable of transmitting or receiving multiple wireless transmissions in parallel.

[0216] The storage device 1430 may include RAM, ROM, or a combination of the above. Memory 1430 may store computer readable code 1435 including instructions that, when executed by a processor (eg, processor 1440), instruct the device to perform the various functions described herein. In some cases, the storage device 1430 may include, among other things, a BIOS that may control the basic operation of the hardware or software, such as interaction with peripheral components or devices.

[0217] The processor 1440 may include an intelligent hardware device (e.g., a general purpose processor, DSP, CPU, microcontroller, ASIC, FPGA, programmable logic device, discrete logic element or transistorized logic component, discrete hardware component, or any combination of the above). In some cases, processor 1440 may be configured to control the storage array using a storage controller. In some cases, a memory controller may be integrated into the processor 1440. The processor 1440 may be configured to execute machine-readable instructions stored in the memory (eg, memory 1430) to cause the device 1405 to perform various functions (eg, functions or tasks that support the control search space overlap indicator).

[0218] The interstation communications scheduler 1445 may manage communications with another base station 105 and may include a controller or scheduler for managing communications with the UE 115 in conjunction with other base stations 105. For example, the interstation communications manager 1445 may coordinate scheduling for transmissions in UE 115 for various interference mitigation technologies such as beamforming or combined transmission. In some examples, the interstation manager 1445 may provide an X2 interface within a technology based on LTE/LTE-A wireless networks in order to provide communication between base stations 105.

[0219] Code 1435 may include instructions for implementing aspects of the present disclosure including instructions for supporting wireless communications. Code 1435 may be stored on a non-volatile computer-readable medium such as system storage or other type of storage device. In some cases, code 1435 may not be directly executable by processor 1440, but may instruct the computer (eg, at compilation and execution) to perform the functions described herein.

[0220] FIG. 15 shows a flowchart illustrating a method 1500 that maintains a control search space overlap indicator in accordance with aspects of the present disclosure. The operations of method 1500 may be implemented by UE 115 or components thereof, as described herein. For example, the operations of method 1500 may be performed by a communication manager, as described with reference to FIG. 7-10. In some examples, the UE may execute a set of instructions in order to control functional elements of the UE in order to perform the functions described below. Additionally or alternatively, the UE may perform aspects of the functions described below using dedicated hardware.

[0221] At 1505, the UE may receive, from the base station, SSBs from the SSB QCL set, the SSB including a parameter indicator indicating information associated with the downlink control channel location set corresponding to the SSB QCL set. Operations 1505 may be performed according to the methods described herein. In some examples, aspects of operations 1505 may be performed by the QCL of the SSB manager, as described with reference to FIG. 7-10.

[0222] At 1510, the UE may determine, based on the parameter, a set of downlink control channel locations corresponding to the SSB QCL set. Operations 1510 may be performed according to the methods described herein. In some examples, aspects of operations 1510 may be performed by a PDCCH location scheduler, as described with reference to FIG. 7-10.

[0223] At 1515, the UE may receive a downlink grant for system information based on monitoring one or more downlink control channel locations from the set of downlink control channel locations. Operations 1515 may be performed according to the methods described herein. In some examples, aspects of operations 1515 may be performed by a PDCCH location scheduler, as described with reference to FIG. 7-10.

[0224] At 1520, the UE may receive system information based on a downlink grant. Operations 1520 may be performed in accordance with the methods described herein. In some examples, aspects of operations 1520 may be performed by an RMSI manager, as described with reference to FIG. 7-10.

[0225] At 1525, the UE may establish a connection with a base station based on the SSB and received system information. Operations 1525 may be performed according to the methods described herein. In some examples, aspects of operations 1525 may be performed by a connection manager, as described with reference to FIG. 7-10.

[0226] FIG. 16 shows a flowchart illustrating a method 1600 that maintains a control search space overlap indicator in accordance with aspects of the present disclosure. The operations of method 1600 may be implemented by base station 105 or components thereof, as described herein. For example, the operations of method 1600 may be performed by a communication manager, as described with reference to FIG. 11-14. In some examples, the base station may execute a set of instructions to control functional elements of the base station so as to perform the functions described below. Additionally or alternatively, the base station may perform aspects of the functions described below using special purpose hardware.

[0227] At 1605, the base station may transmit a set of SSBs, the SSB set including the QCL SSB set, each SSB of the SSB set including a parameter indicator indicating information associated with the set of downlink control channel locations corresponding to the set QCL SSB. Operations 1605 may be performed in accordance with the methods described herein. In some examples, aspects of operations 1605 may be performed by the QCL of the SSB manager, as described with reference to FIG. 11-14.

[0228] At 1610, the base station may transmit, based on the parameter, a downlink grant for system information on a set of downlink control channel locations corresponding to the SSB QCL set. Operations 1610 may be performed in accordance with the methods described herein. In some examples, aspects of operations 1610 may be performed by a PDCCH location scheduler, as described with reference to FIG. 11-14.

[0229] At 1615, the base station may transmit system information according to the transmission grant. Operations 1615 may be performed according to the methods described herein. In some examples, aspects of operations 1615 may be performed by an RMSI manager, as described with reference to FIG. 11-14.

[0230] At 1620, the base station may establish a connection with the UE based on SSB and system information. Operations 1620 may be performed according to the methods described herein. In some examples, aspects of operations 1620 may be performed by a connection manager, as described with reference to FIG. 11-14.

[0231] FIG. 17 shows a flowchart illustrating a method 1700 that maintains an overlap indicator of control search spaces in accordance with aspects of the present disclosure. The operations of method 1700 may be implemented by UE 115 or components thereof, as described herein. For example, the operations of method 1700 may be performed by a communication manager, as described with reference to FIG. 7-10. In some examples, the UE may execute a set of instructions in order to control functional elements of the UE in order to perform the functions described below. Additionally or alternatively, the UE may perform aspects of the functions described below using dedicated hardware.

[0232] At 1705, the UE may receive system information including a bitmap indicating a subset of SSBs transmitted from the SSB set, the system information signal further indicating the maximum number of SSBs available for use, wherein the maximum number of SSBs available for use, exceeds the total number of SSBs in the SSB set. Operations 1705 may be performed in accordance with the methods described herein. In some examples, aspects of operations 1705 may be performed by an SSB parameter manager, as described with reference to FIG. 7-10.

[0233] At 1710, the UE may configure rate negotiation based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use. Operations 1710 may be performed according to the methods described herein. In some examples, aspects of operations 1710 may be performed by a rate matching manager, as described with reference to FIG. 7-10.

[0234] At 1715, the UE may receive a transmission on a physical downlink shared channel based on rate negotiation. Operations 1715 may be performed in accordance with the methods described herein. In some examples, aspects of operations 1715 may be performed by a rate matching manager, as described with reference to FIG. 7-10.

[0235] FIG. 18 shows a flowchart illustrating a method 1800 that maintains a control search space overlap indicator in accordance with aspects of the present disclosure. The operations of method 1800 may be implemented by base station 105 or components thereof, as described herein. For example, the operations of method 1800 may be performed by a communication manager, as described with reference to FIG. 11-14. In some examples, the base station may execute a set of instructions to control functional elements of the base station so as to perform the functions described below. Additionally or alternatively, the base station may perform aspects of the functions described below using special purpose hardware.

[0236] At 1805, the base station may transmit system information including a bitmap indicating a subset of SSBs transmitted from the set of SSBs, the system information further indicating a maximum number of SSBs available for use, wherein the maximum number of SSBs available for use, exceeds the total number of SSBs in the SSB set. Operations 1805 may be performed in accordance with the methods described herein. In some examples, aspects of operations 1805 may be performed by an SSB parameter manager, as described with reference to FIG. 11-14.

[0237] At 1810, the base station may configure rate negotiation based on the subset of SSBs indicated by the bitmap and the indicated maximum number of SSBs available for use. Operations 1810 may be performed according to the methods described herein. In some examples, aspects of operations 1810 may be performed by a rate matching manager, as described with reference to FIG. 11-14.

[0238] At 1815, the base station may perform transmission on the physical downlink shared channel based on rate matching. Operations 1815 may be performed according to the methods described herein. In some examples, aspects of operations 1815 may be performed by a rate matching manager, as described with reference to FIG. 11-14.

[0239] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Additionally, aspects from two or more of the methods may be combined.

[0240] The technologies described herein can be used for various wireless communication systems such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access ( FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and other systems. A CDMA system may implement a radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. CDMA2000 covers the IS-2000, IS-95 and IS-856 standards. Versions of IS-2000 may be commonly referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes wideband CDMA (WCDMA) and other varieties of CDMA. A TDMA system may implement a radio technology such as Global System for Mobile Communications (GSM).

[0241] An OFDMA system may implement a radio technology such as Ultra Wide Band for Mobile (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE, LTE-A and LTE-A Pro are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR, and GSM are described in documents from an organization called "3rd Generation Partnership Project (3GPP)". CDMA2000 and UMB are described in documents from an organization called "3rd Generation Partnership Project 2 (3GPP2)". The technologies described in this document may be used for the radio systems and technologies mentioned in this document, as well as for other radio systems and technologies. While aspects of the LTE-, LTE-A-, LTE-A Pro-, or NR system may be described for exemplary purposes, and LTE-, LTE-A-, LTE-A Pro-, or NR terminology may be used in much of the description, the technologies described in this document are applicable outside of LTE-, LTE-A-, LTE-A Pro- or NR-applications.

[0242] A macro cell generally covers a relatively large geographic area (eg, within a radius of several kilometers) and may allow unrestricted access by a UE with a subscription to a network service provider. A small cell may be associated with a base station with less power than a macro cell, and the small cell may operate in the same or different (eg, licensed, unlicensed, etc.) frequency bands relative to the macro cells. Small cells may include pico cells, femto cells, and micro cells according to various examples. A pico cell, for example, may cover a small geographic area and may provide unrestricted access by UEs with network service provider subscriptions. A femtocell may also cover a small geographic area (eg, home) and may provide limited access by UEs associated with the femtocell (eg, UEs in a Closed Dialogue Group (CSG), UEs for home users, etc.). An ENB for a macro cell may be referred to as a macro eNB. An ENB for a small cell may be referred to as a small cell eNB, a pico eNB, a femto eNB, or a native eNB. An ENB may support one or more (eg, two, three, four, etc.) cells and may also support communication using one or more component carriers.

[0243] The wireless communication systems described herein may support synchronous or asynchronous mode of operation. For the synchronous mode of operation, base stations may have similar frame timing, and transmissions from different base stations may approximately coincide in time. For the asynchronous mode of operation, the base stations may have different frame time synchronization, and transmissions from different base stations may not coincide in time. The techniques described in this document may be used for synchronous or asynchronous operation.

[0244] The information and signals described herein may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, and elementary signals that may be exemplified in the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination. of the above.

[0245] Various illustrative blocks and modules described in connection with the disclosure herein may be implemented or executed by a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete logic element or transistor logic, discrete hardware components or any combination of the above, designed to perform the functions described in this document. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (eg, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors together with a DSP core, or any other similar configuration).

[0246] The functions described herein may be implemented in hardware, software running on a processor, firmware, or any combination of the foregoing. When implemented in software executing by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and the accompanying claims. For example, due to the nature of the software, the functions described herein may be implemented using software running on a processor, hardware, firmware, fixed wiring, or combinations of any of the above. Features that implement functions may also be physically located in different positions, including according to such a distribution that parts of the functions are implemented in different physical locations.

[0247] Computer-readable media includes both non-volatile computer storage media and communication media, including any medium that facilitates movement of a computer program from one place to another. Non-volatile storage media can be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-volatile computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM, or other optical disk storage device, magnetic disk storage device, or other magnetic storage devices, or any other non-volatile medium that can be used to carry or store the required program code in the form of instructions or data structures, and to which can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor. In addition, any connection is properly referred to as a computer-readable medium. For example, if software is transmitted from a Web site, 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 media, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave media are included in the definition of media. Disc (disk) and disc (disc) as used herein include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, while discs (disk) usually play back data magnetically, while disks (disc) usually reproduce data optically using lasers. Combinations of the above are also included in computer readable media.

[0248] When used herein, including in the claims, "or" when used in a list of elements (for example, in a list of elements preceded by a phrase such as "at least one of" or "one or more of") specifies an enclosing list such that, for example, the list "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 both B and C). Also, as used herein, the phrase "based on" should not be construed as referring to a closed set of conditions. For example, an exemplary step that is described "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" is to be construed identically to the phrase "at least partially based on".

[0249] In the accompanying drawings, like components and features may have identical reference numerals. In addition, different components of the same type can be distinguished by adding a dash after the reference symbol and a second symbol that differs between like components. If only the first reference symbol is used in the detailed description, the description applies to any of the like components having the identical first reference symbol, regardless of the second reference symbol or other subsequent reference symbol.

[0250] The description set forth herein in connection with the accompanying drawings describes exemplary configurations and does not represent all examples that may be implemented or that fall within the scope of the claims. The term "exemplary" as used herein means "serving as an example or illustration" and not "preferred" or "preferential over other examples." The detailed description includes specific details for the purposes of providing an understanding of the technologies described. However, these technologies may be practiced without these specific details. In some instances, common structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

[0251] The description in this document is provided to enable those skilled in the art to create or use the entity disclosure. Various modifications to the disclosure should be apparent to those skilled in the art, and the general principles described herein may apply to other variations without departing from the scope of the disclosure. Thus, the disclosure of the essence is not limited to the examples and design solutions described in this document, but should satisfy the widest scope in accordance with the principles and new features disclosed in this document.

Claims (64)

1. A method for wireless communication in a user equipment (UE), comprising the steps of: - receiving, from the base station, a synchronization signal block (SSB) from a set of quasi-stacked synchronization signal blocks, wherein the synchronization signal block is transmitted during a discovery reference signal (DRS) period and contains a parameter indicator indicating information associated with a plurality of downlink control channel locations communication lines corresponding to a set of quasi-jointly placed blocks of synchronization signals; determining, at least in part based on the parameter, a plurality of downlink control channel locations corresponding to the set of quasi-stacked synchronization signal blocks; receiving a downlink permission for system information based at least in part on monitoring one or more downlink control channel locations from a plurality of downlink control channel locations; receiving system information based at least in part on a downlink grant; and - establish a connection with the base station, at least in part based on the block of synchronization signals and the received system information. 2. The method of claim 1, wherein the parameter comprises an offset indicator between successive sync blocks in the set of quasi-stacked sync blocks. 3. The method of claim 1, wherein receiving the block of synchronization signals comprises the step of: receiving a physical broadcast channel part of the synchronization signal block, wherein the physical broadcast channel part of the synchronization signal block contains a parameter indicator. 4. The method of claim 3, wherein receiving the physical broadcast channel portion of the sync block comprises: - perform software combination for multiple blocks of synchronization signals. 5. The method of claim 4, wherein the parameter indicator is common to each sync block of the plurality of sync blocks. 6. The method of claim 5, wherein the plurality of synchronization signal blocks comprise at least one of a set of quasi-jointly placed synchronization signal blocks, a plurality of different sets of quasi-jointly placed synchronization signal blocks, each synchronization signal block associated with the base station, or a combination of of the above. 7. The method according to claim 1, further comprising the step of: - determine the indices of each block of synchronization signals from the set of quasi-jointly placed blocks of synchronization signals, wherein the determination of the plurality of downlink control channel locations is based at least in part on a determined index of each block of synchronization signals from the set of quasi-collocated blocks of synchronization signals. 8. The method according to claim 1, in which: - the determination of the set of downlink control channel locations is based at least in part on the frame in which the block of synchronization signals is received, and the parameter indicated in the block of synchronization signals. 9. The method of claim 1, wherein receiving the downlink grant comprises: tracking each downlink control channel location from the plurality of downlink control channel locations. 10. The method of claim 1, wherein receiving the downlink grant comprises the steps of: - determining that the downlink control information is not detected during the first instance of the plurality of downlink control channel locations; and tracking, at least in part based on the parameter, a second instance of the plurality of downlink control channel locations in order to detect permission to transmit on the downlink. 11. The method of claim 1, wherein the downlink control channel locations of the plurality of downlink control channel locations comprise common type 0 physical downlink control channel search spaces. 12. A method for wireless communication in a base station, comprising the steps of: - a plurality of synchronization signal blocks (SSB) are transmitted, the plurality of synchronization signal blocks comprising a set of quasi-collocated synchronization signal blocks, each synchronization signal block of the plurality of synchronization signal blocks being transmitted during a discovery reference signal (DRS) period and containing a parameter indicator indicating information associated with a plurality of downlink control channel locations corresponding to the set of quasi-collocated synchronization signal blocks; transmitting, at least in part based on the parameter, a downlink permission for system information over a plurality of downlink control channel locations corresponding to the set of quasi-collocated blocks of synchronization signals; - transmit system information according to the permission to transmit; and - establish a connection with the subscriber device, at least in part on the basis of the block of synchronization signals and system information. 13. The method of claim 12, wherein the parameter comprises an offset indicator between successive sync blocks in the set of quasi-stacked sync blocks. 14. The method of claim 12, wherein transmitting the plurality of synchronization signal blocks comprises: - a part of the physical broadcast channel of the synchronization signal block is transmitted, and the physical broadcast part of the synchronization signal block contains a parameter indicator. 15. The method of claim 14, wherein the parameter indicator is common to each sync block of the plurality of sync blocks. 16. Equipment for wireless communication in the user equipment (UE), containing: - means for receiving, from the base station, a synchronization signal block (SSB) from a set of quasi-stacked synchronization signal blocks, wherein the synchronization signal block is transmitted during a discovery reference signal (DRS) period and contains a parameter indicator indicating information associated with the plurality of channel locations downlink controls corresponding to the set of quasi-stacked synchronization signal blocks; means for determining, at least in part based on the parameter, a plurality of downlink control channel locations corresponding to the set of quasi-stacked synchronization signal blocks; means for receiving a downlink grant for system information based at least in part on monitoring one or more downlink control channel locations from a plurality of downlink control channel locations; means for receiving system information based at least in part on a downlink grant; and means for establishing a connection with a base station based at least in part on a block of synchronization signals and received system information. 17. The equipment of claim 16, wherein the parameter comprises an offset indicator between successive sync blocks in the set of quasi-stacked sync blocks. 18. The equipment of claim 16, wherein the means for receiving the block of synchronization signals further comprises: means for receiving a physical broadcast channel portion of the synchronization signal block, wherein the physical broadcast channel portion of the synchronization signal block comprises a parameter indicator. 19. The equipment of claim 18, wherein the means for receiving a portion of the synchronization unit's physical broadcast channel further comprises: means for performing software combining for a plurality of blocks of synchronization signals. 20. The equipment of claim 19, wherein the parameter indicator is common to each sync block of the plurality of sync blocks. 21. Equipment according to claim 16, additionally containing: means for determining the indices of each block of synchronization signals from a set of quasi-stacked blocks of synchronization signals, wherein the determination of the plurality of downlink control channel locations is based at least in part on a determined index of each block of synchronization signals from the set of quasi-collocated blocks of synchronization signals. 22. The equipment of claim 16, wherein the determination of the plurality of downlink control channel locations is based at least in part on the frame in which the sync block is received and a parameter specified in the sync block. 23. The equipment of claim 16, wherein the means for receiving a downlink transmission grant further comprises: means for monitoring each downlink control channel location from a plurality of downlink control channel locations. 24. The equipment of claim 16, wherein the means for receiving a downlink transmission grant further comprises: means for determining that no downlink control information has been detected during a first instance of a plurality of downlink control channel locations; and means for monitoring, at least in part based on a parameter, a second instance of a plurality of downlink control channel locations in order to detect permission to transmit on the downlink. 25. The equipment of claim 16, wherein the downlink control channel locations of the plurality of downlink control channel locations comprise common type 0 physical downlink control channel search spaces. 26. Equipment for wireless communication in a base station, comprising: means for transmitting a plurality of synchronization signal blocks (SSBs), wherein the plurality of synchronization signal blocks comprise a set of quasi-stacked synchronization signal blocks, wherein each synchronization signal block of the plurality of synchronization signal blocks is transmitted during a discovery reference signal (DRS) period and contains a parameter indicator indicating information associated with a plurality of downlink control channel locations corresponding to the set of quasi-collocated blocks of synchronization signals; means for transmitting, at least in part based on a parameter, a downlink permission for system information over a plurality of downlink control channel locations corresponding to the set of quasi-collocated blocks of synchronization signals; - a means for transmitting system information according to the permission to transmit; and means for establishing a connection with a subscriber unit based at least in part on a block of synchronization signals and system information. 27. The equipment of claim 26, wherein the parameter comprises an offset indicator between successive sync blocks in the set of quasi-stacked sync blocks. 28. The equipment of claim 26, wherein the means for transmitting a plurality of blocks of synchronization signals further comprises: means for transmitting a physical broadcast channel portion of the synchronization signal block, the physical broadcast portion of the synchronization signal block comprising a parameter indicator. 29. The equipment of claim 28, wherein the parameter indicator is common to each sync block of the plurality of sync blocks.

Images