A collection of common control resources with resources specific to the user device

Abstract

A common control resource set with user equipment-specific resources. User equipment (UE)-specific information may be sent within a control resource set configured to carry resources common to UEs within the system. The UE-specific information may be associated with a search space having an aggregation level different from the aggregation level used for the common control resources and may occupy different modulation symbols within the common control resource set (e.g., to support flexible scheduling for multiple UEs). The base station and the UE may operate in the system using one or more control resource sets within the system bandwidth. The UE may detect the common control resources by monitoring decoding candidates in the control resource set according to a first aggregation level set. The UE may detect UE-specific control resources by monitoring decoding candidates in the control resource set according to other aggregation levels. The UE and the base station may communicate based on the control information obtained from the monitoring.

Description

[0001] This application is a divisional application of a Chinese patent application filed on December 20, 2017, with application number 201780078663.7 (PCT / US2017 / 067698), and invention name “Public control resource set with resources specific to user equipment”.

[0002] Cross-references

[0003] This patent application claims priority to U.S. patent application No. 15 / 694,143, entitled “CommonControl Resource Set With User Equipment-Specific Resources,” filed by John Wilson et al. on September 1, 2017, and U.S. provisional patent application No. 62 / 437,966, entitled “CommonControl Resource Set With User Equipment-Specific Resources,” filed by John Wilson et al. on December 22, 2016, each of which is assigned to the assignee of this application. Background Art

[0004] The following relates generally to wireless communications, and more particularly to a set of common control resources including resources specific to user equipment.

[0005] 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 multiple-access systems capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, and orthogonal frequency division multiple access (OFDMA) systems (e.g., long term evolution (LTE) systems or new radio (NR) systems). A wireless multiple-access communication system may include multiple base stations or access network nodes, each of which simultaneously supports communication for multiple communication devices (which may otherwise be referred to as user equipment (UE)).

[0006] In some wireless communication systems, control information may be transmitted in certain control resource sets within the system bandwidth (e.g., to limit the bandwidth over which wireless devices search for control information). For example, a control resource set may include one or more search spaces (e.g., a common search space and / or a UE-specific search space) for common control information and UE-specific control information, respectively. That is, in some cases, the common search space and the UE-specific search space may be included in the same control resource set. However, the common control resource set may be configured with restrictions on the aggregation level, which limits the flexibility of transmitting UE-specific information within the system. Summary of the Invention

[0007] The described techniques relate to improved methods, systems, devices, or apparatuses that support the design of common control resource sets. In general, the described techniques provide for the transmission of UE-specific information within a common control resource set. That is, UE-specific information may be sent within a common control resource set (which is supposed to be configured to carry resources shared by multiple UEs within the system). The UE-specific information may be associated with a search space having an aggregation level different from the aggregation level used for the common search space, and / or may occupy different modulation symbols within the control resource set (e.g., to support flexible scheduling for multiple UEs). A base station and a UE may communicate in the system using one or more control resource sets within the system bandwidth. The UE may detect common control resources by monitoring decoding candidates in a given control resource set according to a first set of aggregation levels. The UE may detect UE-specific control resources by monitoring decoding candidates in a control resource set according to other first aggregation levels. The UE and the base station may communicate based on control information obtained from the monitoring.

[0008] A method of wireless communication is described. The method may include identifying one or more sets of control resources in a system bandwidth; identifying, for a set of control resources in the one or more sets of control resources, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space; monitoring at least one first decoding candidate of the first search space according to the first aggregation level to detect common control information; monitoring at least one second decoding candidate of the second search space according to the second aggregation level to detect UE-specific control information; and communicating based at least in part on the common control information, the UE-specific control information, or both.

[0009] An apparatus for wireless communication is described. The apparatus may include: means for identifying one or more sets of control resources in a system bandwidth; means for identifying, for a control resource set of the one or more sets of control resources, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space; means for monitoring at least one first decoding candidate of the first search space according to the first aggregation level to detect common control information; means for monitoring at least one second decoding candidate of the second search space according to the second aggregation level to detect UE-specific control information; and means for communicating based at least in part on the common control information, the UE-specific control information, or both.

[0010] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. The instructions are operable to cause the processor to: identify one or more sets of control resources in a system bandwidth; identify, for a set of control resources in the one or more sets of control resources, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space; monitor at least one first decoding candidate of the first search space based on the first aggregation level to detect common control information; monitor at least one second decoding candidate of the second search space based on the second aggregation level to detect UE-specific control information; and communicate based at least in part on the common control information, the UE-specific control information, or both.

[0011] A non-transitory computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include instructions operable to cause a processor to: identify one or more sets of control resources in a system bandwidth; identify, for a set of control resources in the one or more sets of control resources, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space; monitor at least one first decoding candidate of the first search space according to the first aggregation level to detect common control information; monitor at least one second decoding candidate of the second search space according to the second aggregation level to detect UE-specific control information; and communicate based at least in part on the common control information, the UE-specific control information, or both.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described above may also include processes, features, units, or instructions for performing the following operations: identifying two or more modulation symbols within the control resource set, wherein a first modulation symbol of the control resource set includes the first search space, and a second modulation symbol of the control resource set includes the second search space.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described above may also include processes, features, units, or instructions for performing the following operations: receiving a reference signal in a modulation symbol of the control resource set, wherein the control resource set includes a broadcast channel perforated by the reference signal.

[0014] In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the frequency resources of the first search space at least partially overlap with the frequency resources of the second search space. Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include a process, feature, unit, or instruction for performing the following operations: receiving a reference signal in the overlapping frequency resources. Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include a process, feature, unit, or instruction for performing the following operations: detecting at least one of the common control information or the UE-specific control information in the overlapping frequency resources based at least in part on the reference signal.

[0015] Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include processes, features, units, or instructions for performing the following operations: receiving a message configuring multiple component carriers in a carrier aggregation configuration, wherein the system bandwidth includes the bandwidth of the first component carrier of the carrier aggregation configuration. Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include processes, features, units, or instructions for performing the following operations: receiving a master information block (MIB), wherein the MIB includes an indication of the location of the control resource set. Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include processes, features, units, or instructions for performing the following operations: identifying the location of the control resource set based at least in part on the received MIB.

[0016] In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the system bandwidth also includes a second component carrier of the carrier aggregation configuration. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the MIB may be received on the second component carrier. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the location of the set of control resources is identified as being within the first component carrier of the carrier aggregation configuration.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the MIB may be received on the first component carrier and may indicate that none of the one or more control resource sets may be present in the first component carrier.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the set of control resources may be associated with control information that is common to the UE and other UEs operating in the system bandwidth.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the first aggregation level may be from a first set of aggregation levels including aggregation level four, aggregation level eight, or both.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the second aggregation level can be from a second set of aggregation levels consisting of: aggregation level one, aggregation level two, aggregation level four, aggregation level eight, or aggregation level sixteen, or any combination thereof.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the set of control resources includes at least one of system information, paging information, a random access response message, group power control, addressing for multiple UEs, or any combination thereof.

[0022] A method of wireless communication is described. The method may include identifying one or more sets of control resources in a system bandwidth; identifying, for a set of control resources in the one or more sets of control resources, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space; mapping common control information to at least one first decoding candidate of the first search space based on the first aggregation level; mapping control information specific to a user equipment (UE) to at least one second decoding candidate of the second search space based on the second aggregation level; and communicating with the UE based at least in part on the common control information, the UE-specific control information, or both.

[0023] An apparatus for wireless communication is described. The apparatus may include: means for identifying one or more sets of control resources in a system bandwidth; means for identifying, for a set of control resources in the one or more sets of control resources, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space; means for mapping common control information to at least one first decoding candidate of the first search space based on the first aggregation level; means for mapping control information specific to a user equipment (UE) to at least one second decoding candidate of the second search space based on the second aggregation level; and means for communicating with the UE based at least in part on the common control information, the UE-specific control information, or both.

[0024] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. The instructions are operable to cause the processor to: identify one or more sets of control resources in a system bandwidth; identify, for a set of control resources in the one or more sets of control resources, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space; map common control information to at least one first decoding candidate of the first search space based on the first aggregation level; map control information specific to a user equipment (UE) to at least one second decoding candidate of the second search space based on the second aggregation level; and communicate with the UE based at least in part on the common control information, the UE-specific control information, or both.

[0025] A non-transitory computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include instructions operable to cause a processor to: identify one or more sets of control resources in a system bandwidth; identify, for a set of control resources in the one or more sets of control resources, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space; map common control information to at least one first decoding candidate of the first search space based on the first aggregation level; map control information specific to a user equipment (UE) to at least one second decoding candidate of the second search space based on the second aggregation level; and communicate with the UE based at least in part on the common control information, the UE-specific control information, or both.

[0026] Some examples of the methods, apparatus, and non-transitory computer-readable media described above may also include processes, features, units, or instructions for configuring two or more modulation symbols within the control resource set, wherein the first modulation symbol of the control resource set includes the first search space, and the second modulation symbol of the control resource set includes the second search space.

[0027] Some examples of the methods, apparatus, and non-transitory computer-readable media described above may also include processes, features, units, or instructions for performing the following operations: sending a reference signal in a modulation symbol of the control resource set, wherein the control resource set includes a broadcast channel perforated by the reference signal.

[0028] In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the frequency resources of the first search space at least partially overlap with the frequency resources of the second search space. Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include a process, feature, unit, or instruction for performing the following operations: sending a reference signal in the overlapping frequency resources. Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include a process, feature, unit, or instruction for performing the following operations: mapping control information in the overlapping frequency resources based at least in part on the reference signal.

[0029] Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include a process, feature, unit, or instruction for performing the following operations: sending a message configuring multiple component carriers in a carrier aggregation configuration, wherein the system bandwidth includes the bandwidth of a first component carrier of the carrier aggregation configuration. Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include a process, feature, unit, or instruction for performing the following operations: sending a MIB, wherein the MIB includes an indication of the location of the control resource set.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the set of control resources may be associated with control information that is common to the UE and other UEs operating in the system bandwidth.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the first aggregation level may be from a first set of aggregation levels including aggregation level four, aggregation level eight, or both.

[0032] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the second aggregation level can be from a second set of aggregation levels consisting of: aggregation level one, aggregation level two, aggregation level four, aggregation level eight, or aggregation level sixteen, or any combination thereof.

[0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the set of control resources includes at least one of system information, paging information, a random access response message, group power control, addressing for multiple UEs, or any combination thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 According to aspects of the present disclosure, an example of a wireless communication system supporting a common set of control resources with UE-specific resources is shown;

[0035] Figure 2 According to aspects of the present disclosure, an example of a wireless communication system supporting communications using a common set of control resources with UE-specific resources is shown;

[0036] Figure 3 According to aspects of the present disclosure, an example of a search space configuration for a common set of control resources with UE-specific resources is shown;

[0037] Figure 4 According to aspects of the present disclosure, an example of a process flow in a system supporting communications using a common set of control resources with UE-specific resources is shown;

[0038] Figures 5 to 7 According to aspects of the present disclosure, a block diagram of one or more devices supporting communications using a common set of control resources with UE-specific resources is shown;

[0039] Figure 8 According to aspects of the present disclosure, a block diagram of a system (including a mobile device or UE) that supports communications using a common set of control resources with UE-specific resources is shown;

[0040] Figures 9 to 11 According to aspects of the present disclosure, a block diagram of one or more devices supporting communications using a common control resource set design is shown;

[0041] Figure 12 According to aspects of the present disclosure, a block diagram of a system (including a network device or base station) that supports communications using a common set of control resources with UE-specific resources is shown; and

[0042] Figures 13 to 18 According to aspects of the present disclosure, a method for communicating based on a common set of control resources with UE-specific resources is shown. DETAILED DESCRIPTION

[0043] Some wireless communication systems may use a set of control resources within the system bandwidth to send control information to a UE. In some examples, the control information may not span the entire system bandwidth and may instead be sent in certain sets of control resources that include common control information or UE-specific control information. Thus, a UE within the system may monitor decoding candidates of a common search space for control information intended for multiple UEs, and may monitor decoding candidates of a UE-specific search space for control information designated for a UE. As described herein, a base station may map UE-specific control information to a set of control resources that is otherwise associated with the common control information (i.e., a common control resource set). Such mapping may improve scheduling flexibility on systems that employ separate sets of common and UE-specific control resources.

[0044] A common control resource set may be used to carry broadcast information (e.g., system information, paging information, random access responses, etc.), and a common search space within the common control resource set may be associated with a set of aggregation levels (including, for example, aggregation level 4 and aggregation level 8). In some cases, UE-specific information may also be sent in the common control resource set, but the number of UEs multiplexed on the resources of the common control resource set may be limited by the lack of more aggregation level options (e.g., because aggregation level 4 or aggregation level 8 may be the only options). However, as described herein, a resource-efficient design for control resource sets may be used to achieve greater flexibility when sending UE-specific control information on the common control resource set, when multiplexing with synchronization signals, and when used in carrier aggregation configurations.

[0045] For example, resources in a control resource set may include different decoding candidates for obtaining control information, where the decoding candidates may be associated with a broadcast-based control channel or a UE-specific control channel (e.g., may belong to a common search space or a UE-specific search space, respectively). For example, a first set of candidate resources may correspond to a broadcast-based control channel, which may be defined by a search space having a certain set of aggregation levels (e.g., including aggregation level 4 and aggregation level 8). A second set of candidate resources for UE-specific control information may correspond to a UE-specific control channel and may be defined by a search space having another set of aggregation levels (e.g., aggregation levels 1, 2, 4, 8, and 16). Because the second set of candidate resources may have a search space that provides greater flexibility in terms of aggregation levels than the first set of candidate resources, the base station may use common control resources to send UE-specific information to a larger number of UEs than would otherwise be possible using only the first set of aggregation levels.

[0046] The aspects of the present disclosure described above are described below in the context of a wireless communication system. Subsequently, additional examples of common control resource configurations including UE-specific search spaces are provided. Aspects of the present disclosure are also illustrated and described with reference to apparatus diagrams, system diagrams, and flow charts related to common resource control set design.

[0047] Figure 1 In accordance with various aspects of the present disclosure, an example of a wireless communication system 100 is shown. The wireless communication system 100 includes a base station 105, a UE 115, and a core network 130. In some examples, the wireless communication system 100 can be a Long Term Evolution (LTE) (or LTE-Advanced (LTE-A)) network, or a New Radio (NR) network. In some cases, the wireless communication system 100 can support enhanced broadband communication, ultra-reliable (i.e., mission-critical) communication, low-latency communication, and communication with low-cost and low-complexity devices. The wireless communication system 100 can support efficient use of resources within a common set of control resources, which enables transmission of UE-specific control information to multiple UEs 115.

[0048] The base station 105 can communicate wirelessly with the UE 115 via one or more base station antennas. Each base station 105 provides communication coverage for a corresponding geographic coverage area 110. The communication link 125 shown in the wireless communication system 100 can include an uplink (UL) transmission from the UE 115 to the base station 105, or a downlink (DL) transmission from the base station 105 to the UE 115. Control information and data can be multiplexed on the uplink channel or downlink according to various techniques. For example, time division multiplexing (TDM) technology, frequency division multiplexing (FDM) technology, or hybrid TDM-FDM technology can be used to multiplex control information and data on the downlink channel. In some examples, the control information sent during a transmission time interval (TTI) of the downlink channel can be distributed in a cascaded manner between different control regions (e.g., between a common control region and one or more UE-specific control regions).

[0049] UEs 115 may be dispersed throughout the wireless communication system 100, and each UE 115 may be fixed or mobile. UEs 115 may also be referred to as mobile stations, subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, handsets, user agents, mobile clients, clients, or some other appropriate terminology. UEs 115 may be cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, tablet computers, laptop computers, cordless phones, personal electronic devices, handheld devices, personal computers, wireless local loop (WLL) stations, Internet of Things (IoT) devices, Internet of Everything (IoE) devices, machine type communication (MTC) devices, appliances, cars, etc. UEs 115 may identify control resource sets of the system bandwidth, and they may identify different aggregation levels associated with common control resources and UE-specific control resources within the same control resource set, and communicate based on these different aggregation levels.

[0050] The base stations 105 can communicate with the core network 130 and with each other. For example, the base stations 105 can interface with the core network 130 via a backhaul link 132 (e.g., S1, etc.). The base stations 105 can communicate with each other directly or indirectly (e.g., through the core network 130) via a backhaul link 134 (e.g., X2, etc.). The base stations 105 can perform radio configuration and scheduling for communication with the UE 115, or can operate under the control of a base station controller (not shown). In some examples, the base stations 105 can be macro cells, small cells, hot spots, etc. The base stations 105 can also be referred to as evolved Node Bs (eNBs) 105. The base stations 105 can identify control resource sets of the system bandwidth, and they can identify different aggregation levels associated with common control resources and UE-specific control resources within the same control resource set, and communicate based on these different aggregation levels.

[0051] The base station 105 can be connected to the core network 130 via an S1 interface. The core network can be an evolved packet core (EPC), which can include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one packet data network (PDN) gateway P-GW. The MME can be a control node that handles signaling between the UE 115 and the EPC. All user Internet Protocol (IP) packets can be transmitted through the S-GW, which itself can be connected to the P-GW. The P-GW can provide IP address allocation and other functions. The P-GW can be connected to network operator IP services. Operator IP services can include the Internet, intranet, IP multimedia subsystem (IMS), and packet switched (PS) streaming services.

[0052] A multiple-input, multiple-output (MIMO) wireless system uses a transmission scheme between a transmitter (e.g., base station 105) and a receiver (e.g., UE 115) where both the transmitter and the receiver are equipped with multiple antennas. Some portions of the wireless communication system 100 may use beamforming. For example, the base station 105 may have an antenna array comprising multiple rows and columns of antenna ports, which the base station 105 may use for beamforming in its communications with the UE 115. A signal may be sent multiple times in different directions (e.g., each transmission may be beamformed differently).

[0053] The wireless communication system 100 may support operation on multiple cells or carriers (a feature that may be referred to as carrier aggregation or multi-carrier operation). A carrier may also be referred to as a component carrier, layer, channel, bandwidth portion, etc. The term "component carrier" may refer to each carrier of the multiple carriers used by the UE 115 in carrier aggregation operation and may be distinct from other portions of the system bandwidth. A component carrier may be a relatively narrow bandwidth carrier that is readily used independently or in combination with other component carriers. A component carrier may include several subbands, which in turn may include several subcarriers. A component carrier may be configured with various control resource sets as described herein.

[0054] Each component carrier can provide the same capabilities as an isolated carrier based on Release 8 or Release 9 or later versions of the LTE standard. Multiple component carriers can be aggregated or used simultaneously to provide greater bandwidth and, for example, higher data rates to some UEs 115. Thus, individual component carriers can be backward compatible with legacy UEs 115 (e.g., UEs 115 implementing LTE Release 8 or Release 9), while other UEs 115 (e.g., UEs 115 implementing LTE versions after Release 8 / 9) can be configured with multiple component carriers in multi-carrier mode.

[0055] A carrier used for the downlink may be referred to as a downlink component carrier, and a carrier used for the uplink may be referred to as an uplink component carrier. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers for carrier aggregation. Each carrier may be used to transmit control information (e.g., reference signals, control channels, etc.), overhead information, data, etc. A UE 115 may utilize multiple carriers to communicate with a single base station 105, and may also communicate with multiple base stations simultaneously on different carriers.

[0056] Each cell of the base station 105 may include an uplink component carrier and a downlink component carrier. The coverage area 110 of each serving cell of the base station 105 may be different (e.g., component carriers on different frequency bands may experience different path losses). In some examples, for a UE 115 (which may be served by a primary cell (PCell)), one carrier is designated as a primary carrier or primary component carrier (PCC). The primary cell may be semi-statically configured on a per-UE basis by higher layers (e.g., radio resource control (RRC), etc.). The primary cell may carry certain uplink control information (UCI) (e.g., acknowledgement / negative acknowledgement (ACK / NACK), channel quality indicator (CQI)) and scheduling information sent on a physical uplink control channel (PUCCH). Additional carriers may be designated as secondary carriers or secondary component carriers (SCCs), which may be served by a secondary cell (SCell). Similarly, the secondary cell may be semi-statically configured on a per-UE basis. In some cases, the secondary cell may not include or be configured to send the same control information as the primary cell.

[0057] The wireless communication system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication at the bearer or packet data convergence protocol (PDCP) layer can be based on the Internet Protocol (IP). In some cases, the radio link control (RLC) layer can perform packet segmentation and reassembly to communicate through logical channels. The medium access control (MAC) layer can perform priority processing and multiplex logical channels into transport channels. The MAC layer can also use hybrid automatic repeat request (HARQ) to provide retransmission at the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration and maintenance of the RRC connection between the UE 115 and the network device or the core network 130 to support the radio bearer for user plane data. At the physical (PHY) layer, the transport channel can be mapped to the physical channel.

[0058] The basic time unit (which can be T s =1 / 30,720,000 seconds) to represent the time interval in LTE or NR. f=307200Ts) organizes time resources in radio frames, which can be identified by system frame numbers (SFNs) ranging from 0 to 1023. Each frame may include ten 1 ms subframes numbered from 0 to 9. The subframe may be further divided into two 0.5 ms time slots, each of which contains 6 or 7 modulation symbol periods (depending on the length of the cyclic prefix prepended to each symbol). Excluding the cyclic prefix, each symbol contains 2048 sampling periods. In some cases, a subframe may be the minimum scheduling unit, which is also referred to as a TTI. In other cases, a TTI may be shorter than a subframe or may be dynamically selected (for example, in a short TTI burst or in a component carrier selected to use a short TTI).

[0059] A UE 115 attempting to access a wireless network may perform an initial cell search by detecting a primary synchronization signal (PSS) from the base station 105. The PSS may enable synchronization of time slot timing and may indicate a physical layer identity value. Subsequently, the UE 115 may receive a secondary synchronization signal (SSS). The SSS may enable radio frame synchronization and may provide a cell identity value, which may be combined with the physical layer identity value to identify the cell. The SSS may also enable detection of duplex mode and cyclic prefix length. Some systems (such as TDD systems) may transmit the SSS without transmitting the PSS. Both the PSS and the SSS may be located in the central 62 and 72 subcarriers of the carrier, respectively.

[0060] After receiving the PSS and SSS, the UE 115 may receive the MIB, which may be sent in the physical broadcast channel (PBCH). The MIB may be sent in the central portion of the component carrier (e.g., the central subband). The MIB may contain system bandwidth information, SFN, and physical HARQ indicator channel (PHICH) configuration. The MIB may contain an indication of the location of the control resource set. After decoding the MIB, the UE 115 may receive one or more system information blocks (SIBs), which may carry the remaining minimum system information. For example, SIB1 may contain cell access parameters and scheduling information for other SIBs. Decoding SIB1 may enable the UE 115 to receive SIB2. SIB2 may contain RRC configuration information related to random access channel (RACH) procedures, paging, PUCCH, physical uplink shared channel (PUSCH), power control, sounding reference signal (SRS), and cell barring. UE 115 may also determine that the component carrier does not include a set of control resources (eg, based on the MIB), or UE 115 may identify the set of control resources based on an indication in the MIB or based on an indication in the SIB.

[0061] The Physical Downlink Control Channel (PDCCH) carries downlink control information (DCI) in control channel elements (CCEs), which can include nine logically consecutive resource element groups (REGs), where each REG contains four resource elements (REs). The DCI includes information about DL scheduling assignments, UL resource grants, transmission schemes, UL power control, HARQ information, modulation and coding schemes (MCS), etc. The size and format of the DCI message can vary depending on the type and amount of information carried by the DCI. For example, if spatial division multiplexing is supported, the size of the DCI message is large compared to contiguous frequency allocations. Similarly, for systems employing MIMO, the DCI can include additional signaling information. The DCI size and format can depend on the amount of information and factors such as bandwidth, number of antenna ports, and duplex mode.

[0062] The PDCCH can carry DCI messages associated with multiple users, and each UE 115 can decode the DCI messages intended for it. Certain DCI messages may include common control information. For example, a cell radio network temporary identifier (C-RNTI) may be assigned to each UE 115 and the cyclic redundancy check (CRC) bits attached to each DCI may be scrambled based on the C-RNTI. In order to reduce power consumption and overhead at the user equipment, a limited set of CCE positions may be specified for the DCI associated with a specific UE 115. CCEs may be grouped (e.g., at aggregation levels of 1, 2, 4, 8, or 16 CCEs), and a set of CCE positions in which a user equipment may find relevant DCI may be specified. A CCE set may be referred to as a search space. The control resource set may be divided into two regions: a common CCE region or search space and a UE-specific (i.e., dedicated) CCE region or search space.

[0063] A common search space (i.e., a common CCE area) can be monitored by all UEs 115 served by the base station 105 and can include information such as paging information, system information, random access procedures, etc. As described herein, a common search space and a UE-specific search space can be included in a given set of control resources. In some examples, the common search space can be mapped to the first symbol of the control resource set, and the UE-specific search space can be mapped to another symbol. The UE-specific search space can include user-specific control information. The CCEs can be indexed, and the common search space can start from CCE 0. The starting index of the UE-specific search space can depend on the C-RNTI, subframe index, CCE aggregation level, and random seed. In some cases, the UE-specific search space and the common search space can share one or more CCEs (e.g., CCE 8).

[0064] The UE 115 may attempt to decode the DCI by performing a process known as blind decoding, in which the search space is randomly decoded until the DCI is detected. During blind decoding, the UE 115 may attempt to descramble all potential DCI messages using its C-RNTI and perform a CRC check to determine whether the attempt was successful for a given decoding candidate.

[0065] A resource element (which may include common control information or data or UE-specific control information or data) may include one symbol period and one subcarrier (e.g., a 15 kHz frequency range). A resource block may contain 12 consecutive subcarriers in the frequency domain and, for a normal cyclic prefix in each OFDM symbol, 7 consecutive orthogonal frequency division multiplexing (OFDM) symbols in the time domain (1 slot), or 84 resource elements. The number of bits carried by each resource element may depend on the MCS. Therefore, the more resource blocks a UE receives and the higher the modulation scheme, the higher the data rate can be.

[0066] In some cases, the wireless communication system 100 can utilize an enhanced component carrier (eCC). An eCC can be characterized by one or more characteristics including: wider bandwidth, shorter symbol duration, shorter TTI, and a modified control channel configuration. In some cases, an eCC can be associated with a carrier aggregation configuration or a dual connectivity configuration (e.g., when multiple serving cells have suboptimal or non-ideal backhaul links). An eCC can also be configured for use in unlicensed spectrum or shared spectrum (when more than one operator is allowed to use the spectrum). An eCC characterized by a wide bandwidth can include one or more segments that can be used by UEs 115 that are unable to monitor the entire bandwidth or prefer to use a limited bandwidth (e.g., to save power).

[0067] In some cases, an eCC may utilize a different symbol duration than other component carriers, which may include using a reduced symbol duration compared to the symbol duration of other component carriers. The shorter symbol duration is associated with an increased subcarrier spacing. A TTI in an eCC may include one or more symbols. In some cases, the TTI duration (i.e., the number of symbols in a TTI) may be variable. In some cases, an eCC may utilize a different symbol duration than other component carriers, which may include using a reduced symbol duration compared to the symbol duration of other component carriers. The shorter symbol duration is associated with an increased subcarrier spacing. A device utilizing an eCC (such as a UE 115 or a base station 105) may transmit a wideband signal (e.g., 20, 40, 60, 80 MHz, etc.) with a reduced symbol duration (e.g., 16.67 microseconds). A TTI in an eCC may include one or more symbols. In some cases, the TTI duration (i.e., the number of symbols in a TTI) may be variable.

[0068] In some cases, the wireless system 100 can utilize both licensed and unlicensed radio frequency bands. For example, the wireless communication system 100 can employ LTE License Assisted Access (LTE-LAA) or LTE Unlicensed (LTE U) radio access technology or NR technology in an unlicensed radio frequency band, such as the 5 GHz Industrial, Scientific and Medical (ISM) band. When operating in an unlicensed radio frequency band, wireless devices (such as base stations 105 and UEs 115) can employ a listen-before-talk (LBT) process to ensure that the channel is idle before sending data. In some cases, operations in the unlicensed band can be based on a carrier aggregation configuration in combination with component carriers (CCs) operating in the licensed band. Operations in the unlicensed spectrum can include downlink transmissions, uplink transmissions, or both. Duplexing in the unlicensed spectrum can be based on frequency division duplexing (FDD), time division duplexing (TDD), or a combination of both.

[0069] The wireless communication system 100 can implement transmission of UE-specific information within a set of control resources, wherein the UE-specific information is associated with a search space having an aggregation level that implements flexible scheduling for multiple UEs. The UE 115 can identify different aggregation levels of a set of control resources, wherein the set of control resources is configured to carry control information used by multiple UEs 115. In some cases, the UE 115 can monitor different decoding candidates in the set of control resources based on different aggregation levels. For example, the UE 115 can detect resources in the set of control resources by monitoring decoding candidates based on aggregation level. Alternatively, the UE 115 can detect UE-specific control resources by monitoring decoding candidates in the set of control resources based on another aggregation level. Based on the control information within the set of control resources, the UE-specific resources, or both, the UE 115 and the base station 105 can communicate with each other.

[0070] Figure 2 An example of a wireless communication system 200 that supports communication using a common control resource set design is shown. The wireless communication system 200 may include a base station 105-a and a plurality of UEs 115 (eg, including UE 115-a), which may be as described with reference to FIG. Figure 1 The wireless communication system 200 may be an example of a system that implements transmission of UE-specific information within a common set of control resources using different aggregation levels for a search space associated with the UE-specific information.

[0071] The wireless communication system 200 may employ a set of subbands 205 within the system bandwidth to transmit control information to multiple UEs 115. For example, the control information may not span the entire system bandwidth and may instead be transmitted in certain subbands 205 that include common control information or UE-specific control information. For example, a 100 MHz system bandwidth may include, in addition to a subband 205 having a set of UE-specific control resources (e.g., associated with a second 20 MHz bandwidth), a different subband 205 having a set of common control resources (e.g., associated with a first 20 MHz bandwidth). That is, both the common set of control resources and the UE-specific set of control resources may span one or more subbands 205 (e.g., such that the control resource sets may not include contiguous frequency resources). Thus, a UE 115-a may monitor the common set of control resources for control information intended for multiple UEs 115 and monitor the UE-specific set of control resources for control information intended for multiple UEs 115-a.

[0072] The common control resource set can be used to carry broadcast information such as system information, paging information, random access responses, etc. The search space within the common control resource set can be associated with a set of aggregation levels (including, for example, aggregation level 4 and aggregation level 8). In some cases, UE-specific information can also be sent in the common control resource set. In some cases, the wireless communication system 200 can use a resource-efficient design for the common control resource set to achieve greater flexibility when sending UE-specific control information on the common control resource set, when multiplexing with synchronization signals and broadcast channels, and when used in carrier aggregation configurations.

[0073] In some cases, resources within the control resource sets of one or more subbands 205 may include different decoding candidates for control information, where the decoding candidates may be associated with a broadcast-based control channel or a UE-specific control channel (e.g., having a common search space or a UE-specific search space). For example, a first set of candidate resources in the control resource sets 210 may correspond to a broadcast-based control channel, which may be defined by a search space having a first set of aggregation levels (e.g., including aggregation level 4 and aggregation level 8). The broadcast-based control channel may have control information including system information, paging, random access response, group power control, or addressing for multiple UEs 115.

[0074] A second set of candidate resources in control resource set 210 may correspond to a UE-specific control channel and may be defined by a search space having another set of aggregation levels. That is, the UE-specific candidate resource set may be defined, for example, to include search spaces having aggregation levels 1, 2, 4, 8, or 16. Because the second set of candidate resources may include a search space having a more flexible search space, where the used aggregation levels include, for example, smaller aggregation levels (such as aggregation level 1 and aggregation level 2) than the first set of candidate resources, base station 105-a may use resources in control resource set 210 to transmit UE-specific information for UE 115-a and UE-specific information for other UEs 115. That is, due to the smaller aggregation level, more UEs 115 may be multiplexed on the common set of control resources when transmitting UE-specific information.

[0075] In some examples, a common control resource set within control resource set 210 can be configured to include multiple symbol periods (e.g., modulation symbols) for control information. In such a case, a first candidate resource set (e.g., including broadcast-based control information) can be restricted to certain modulation symbols. For example, a first symbol period (e.g., a temporary first symbol period) can be allowed to carry broadcast-based control information. Additionally or alternatively, any UE-specific control information in the first symbol period can include the same control candidate set as the broadcast-based control information. A second symbol period (e.g., following the first symbol period) can include a UE-specific search space having UE-specific control information.

[0076] In some cases (e.g., when there is overlap between resources of a UE-specific candidate set and a common control candidate set), it may be beneficial to use a single reference signal (e.g., a demodulation reference signal (DMRS)) for a given CCE of the overlapping candidate set. For example, the reference signal may be transmitted on the control resource set 210, but may be used to provide channel estimates for CCEs associated with decoding candidates of the common search space covered by the reference signal as well as CCEs associated with decoding candidates of the UE-specific search space.

[0077] In some cases, the control resource set 210 may include a reference signal and may be located in the same time slot or aggregated time slot (e.g., in a carrier aggregation configuration) as a downlink synchronization signal (e.g., PSS, SSS, etc.) or a broadcast channel (e.g., PBCH). In some cases, the downlink synchronization signal may overlap with the resources of the control resource set 210. Therefore, when the reference signal and the synchronization signal occupy the same symbol period, the reference signal may be punctured into the synchronization signal. For example, the PBCH may occupy the first symbol period in time in a time slot, and the first symbol in time may also contain the reference signal of the control resource set 210. Therefore, the reference signal may puncture the PBCH.

[0078] The MIB can be used to indicate the presence and location of various control resource sets transmitted using carrier aggregation techniques. For example, the MIB can be used to indicate that the component carrier carrying the MIB does not contain a control resource set. The MIB can also indicate the transmission of control resource sets on different component carriers (e.g., cross-carrier signaling).

[0079] Figure 3An example of a search space configuration 300 for a common control resource set design is shown. In some examples, the search space configuration 300 can be used by the base station 105 to map common control decoding candidates, or UE-specific decoding candidates, or both, to different resources within the control resource set using different aggregation levels. The search space configuration 300 can be an example of a common control resource set that enables efficient use of resources for transmission of UE-specific information.

[0080] Search space configuration 300 may include a system bandwidth 305, which includes multiple sets of control resources 310. Although shown as being contiguous in frequency, it is understood that in some cases, the control resource sets 310 may be non-contiguous (i.e., not contiguous in frequency) or may at least partially overlap. In some cases, a first set of control resources 310-a may be configured for transmission of control information (e.g., system information, paging information, etc.) common to several UEs 115, while a second set of control resources 310-b may be configured for transmission of UE-specific control information (e.g., scheduling information, power control information, etc.). As a result, a UE 115 operating in system bandwidth 305 may not need to monitor the entire system bandwidth 305 to obtain DCI. Instead, the UE 115 may monitor the resources of the first set of control resources 310-a and the second set of control resources 310-b for DCI and may then open its radio frequency to the entire system bandwidth 305 as needed (e.g., to transmit or receive data).

[0081] As discussed above, the first set of control resources 310-a may include common search spaces associated with different aggregation levels. The first set of control resources 310-a may include a common search space 315 having a first aggregation level and a UE-specific search space 320 having a second aggregation level. For example, the common search space 315 may be associated with aggregation level eight and may correspond to a broadcast-based transmission of control information for multiple UEs 115. Alternatively, the UE-specific search space 320 may correspond to aggregation level two and include UE-specific information for a particular UE 115.

[0082] Different aggregation levels may be possible for common search space 315 and UE-specific search space 320. For example, common search space 315 may be associated with aggregation level four, and UE-specific search space 320 may be associated with aggregation level sixteen. In any case, first set of control resources 310-a may include different control candidate sets that UE 115 may monitor for decoding control information. In some cases, the different control candidate sets may simply be two different candidate sets with different aggregation levels.

[0083] In some examples, the control information for the common control resources included in the first set of control resources 310-a may include control information for multiple modulation symbols 325 (e.g., OFDM symbols). In such a case, the common search space 315 may be included in the first modulation symbol 325-a, while the UE-specific search space 320 may be included in the second modulation symbol 325-b. Thus, different modulation symbols 325 may be associated with control information in different search spaces with corresponding aggregation levels. The UE 115 may monitor both the first modulation symbol 325-a and the second modulation symbol 325-b (or more modulation symbols 325) within the first set of control resources 310-a for decoding candidates. As a result of any control information detected within the common search space 315 and / or the UE-specific search space 320, the UE 115 may communicate with the base station 105.

[0084] In some cases, at least a portion of the common search space 315 may overlap with a portion (e.g., or all) of the UE-specific search space 320. As described above, in such cases, reference signals transmitted within the common search space 315 (e.g., or the UE-specific search space 320) may be used to obtain channel estimates for decoding candidates for each search space. For example, a reference signal carried in the common search space 315 in the first modulation symbol 325-a may facilitate detection of control information in the UE-specific search space 320 in the second modulation symbol 325-b. Furthermore, while aspects of the present example are described in the context of frequency-first scheduling (i.e., scheduling in which transmissions are scheduled across available frequencies before being scheduled across different time resources), it is to be understood that various aspects may also be extended to time-first scheduling. For example, in some cases, the common search space 315 may span symbol periods 325-a, 325-b (e.g., on a first frequency resource set), and the UE-specific search space 315 may span one or both of the symbol periods 325-a, 325-b (e.g., on a second frequency resource set, which may fully, partially, or not overlap at all with the first frequency resource set).

[0085] Figure 4 An example of a process flow 400 in a system supporting communication using a common set of control resources with UE-specific resources is shown. The process flow 400 may include a UE 115-b and a base station 105-b, which may be as described with reference to FIG. Figure 1 and 2Process flow 400 may be an example of a system in which a common set of control resources may include UE-specific control information transmitted using an aggregation level that enables multiplexing for an increased number of UEs 115.

[0086] At 405, UE 115-b and base station 105-b may identify one or more control resource sets within a system bandwidth for transmission of control resources in the system. For example, multiple UEs 115 (e.g., including UE 115-b) may operate in the system bandwidth, and to achieve power savings at each UE 115, they may refrain from monitoring the entire system bandwidth for control information and instead monitor resources associated with one or more control resource sets for control information. In some cases, base station 105-b and UE 115-b may optionally operate using a carrier aggregation configuration. Thus, at 410, base station 105-b may send a message configuring a set of component carriers in a carrier aggregation configuration, and UE 115-b may receive the message. In such a case, the system bandwidth may include the bandwidth of a first component carrier of the carrier aggregation configuration and / or the bandwidth of a second component carrier of the carrier aggregation configuration.

[0087] At 415, base station 105-b may identify, for a given set of control resources, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. The set of control resources may be configured to carry control information common to UE 115-b and other UEs 115 in the wireless communication system. For example, the set of control resources may include at least one of system information, paging information, a random access response message, group power control, addressing for multiple UEs 115, or any combination thereof. In some cases, the first aggregation level is associated with control information common to UE 115-b and other UEs 115 in the wireless communication system (e.g., the first aggregation level is associated with a broadcast-based control channel). In some examples, the first aggregation level may be associated with an aggregation level set that includes aggregation level four or aggregation level eight. Additionally, the second aggregation level may be associated with an aggregation level set that includes aggregation level one, aggregation level two, aggregation level four, aggregation level eight, or aggregation level sixteen. In some cases, multiple aggregation levels from the first aggregation level set and the second aggregation level set may be associated with the search space.

[0088] At 420, base station 105-b may map the control information to different decoding candidates for the corresponding search space. For example, base station 105-b may map the common control information to at least one first decoding candidate for the common search space based on a first aggregation level. Base station 105-b may also map the UE-specific control information to at least one second decoding candidate for the UE-specific search space based on a second aggregation level.

[0089] At 425, base station 105-b may send the MIB to UE 115-b. For example, base station 105-b may send a PBCH that includes the MIB. In some cases, such as when UE 115-b and base station 105-b are operating in a carrier aggregation configuration, the MIB may be sent on resources of a given component carrier of the carrier aggregation configuration, where the MIB includes an indication of the location of a set of common control resources. For example, the MIB may indicate that the given component carrier includes a set of common control resources (e.g., and may indicate that another carrier in the carrier aggregation configuration includes a set of common control resources). Alternatively, the MIB may indicate that the set of control resources is located within the bandwidth of another component carrier.

[0090] At 430, the base station 105-b may send control information, and the UE 115-b may receive the control information. At 435, the UE 115-b may identify a first aggregation level and a second aggregation level for a set of control resources. The UE 115-b may identify two or more modulation symbols within the set of control resources, wherein the first modulation symbol comprises a common search space and the second modulation symbol comprises a UE-specific search space.

[0091] At 440, UE 115-b may monitor different decoding candidates for information. For example, UE 115-b may monitor a first decoding candidate of a common search space according to a first aggregation level to detect common control information. Additionally, UE 115-b may monitor a second decoding candidate of a UE-specific search space according to a second aggregation level to detect UE-specific control information. In one example, UE 115-b may receive a reference signal in a modulation symbol of a common set of control resources, wherein the common set of control resources includes a broadcast channel (e.g., a PBCH) punctured by the reference signal.

[0092] At 445, UE 115-b may detect control information included in the set of control resources. For example, UE 115-b may detect broadcast-based control information associated with the first aggregation level (e.g., paging information, system information, etc.) and may detect UE-specific control information associated with the second aggregation level (e.g., scheduling information, power control information, etc.). At 450, UE 115-b and base station 105-b may communicate based on the control information.

[0093] Figure 5 According to various aspects of the present disclosure, a block diagram 500 of a wireless device 505 is shown that supports communication using a common set of control resources with UE-specific resources. The wireless device 505 may be as described with reference to Figure 1 Examples of aspects of the UE 115 are described. The wireless device 505 may include a receiver 510, a UE control information manager 515, and a transmitter 520. The wireless device 505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0094] The receiver 510 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to common control resource set design, etc.). The information may be transmitted to other components of the device. The receiver 510 may be a reference Figure 8 Examples of aspects of the transceiver 835 are described.

[0095] UE control information manager 515 may be a reference Figure 8 Examples of aspects of the UE control information manager 815 are described. The UE control information manager 515 or at least some of its various subcomponents may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functionality of the UE control information manager 515 and / or at least some of its various subcomponents may be performed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof designed to perform the functions described in this disclosure.

[0096] The UE control information manager 515 and / or at least some of its various subcomponents may be physically located at various locations, including being distributed so that portions of the functionality are implemented by one or more physical devices at different physical locations. In some examples, according to various aspects of the present disclosure, the UE control information manager 515 or at least some of its various subcomponents may be separate and distinct components. In other examples, according to various aspects of the present disclosure, the UE control information manager 515 or at least some of its various subcomponents may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0097] The UE control information manager 515 may identify one or more control resource sets in the system bandwidth. The UE control information manager 515 may identify, for a control resource set in the one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. The UE control information manager 515 may monitor at least one first decoding candidate of the first search space according to the first aggregation level to detect common control information, and monitor at least one second decoding candidate of the second search space according to the second aggregation level to detect UE-specific control information. The UE control information manager 515 may communicate based at least in part on the common control information, the UE-specific control information, or both.

[0098] The transmitter 520 may transmit signals generated by other components of the device. In some examples, the transmitter 520 may be co-located with the receiver 510 in a transceiver module. For example, the transmitter 520 may be a reference Figure 8 Examples of aspects of the depicted transceiver 835. The transmitter 520 may include a single antenna, or it may include a group of antennas.

[0099] Figure 6 According to various aspects of the present disclosure, a block diagram 600 of a wireless device 605 is shown that supports communication using a common set of control resources with UE-specific resources. The wireless device 605 may be as described with reference to Figure 1 and 5 Examples of aspects of the wireless device 505 or UE 115 are described. The wireless device 605 may include a receiver 610, a UE control information manager 615, and a transmitter 620. The wireless device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0100] The receiver 610 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to common control resource set design, etc.). The information may be transmitted to other components of the device. The receiver 610 may be a reference Figure 8 Examples of aspects of the transceiver 835 are described.

[0101] UE control information manager 615 may be a reference Figure 8 Examples of aspects of the UE control information manager 815 are described. The UE control information manager 615 may also include a UE resource collection component 625, an aggregation level component 630, a decoding manager 635, and a UE communication component 640.

[0102] UE resource set component 625 can identify one or more control resource sets within the system bandwidth. Aggregation level component 630 can identify, for a control resource set in the one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. In some examples, the first aggregation level is associated with control information shared by UE 115 and other UEs 115 in the wireless communication system. In some cases, the first aggregation level is selected from a first aggregation level set that includes aggregation level four or aggregation level eight. In some cases, the second aggregation level is selected from a first aggregation level set that includes aggregation level one, aggregation level two, aggregation level four, aggregation level eight, or aggregation level sixteen.

[0103] The decoding manager 635 can monitor at least one first decoding candidate of a first search space according to a first aggregation level to detect common control information; and monitor at least one second decoding candidate of a second search space according to a second aggregation level to detect UE-specific control information. In some cases, the set of common control resources includes at least one of system information, paging information, a random access response message, group power control, addressing for a set of UEs 115, or any combination thereof. The UE communication component 640 can communicate based at least in part on the common control information, the UE-specific control information, or both.

[0104] The transmitter 620 may transmit signals generated by other components of the device. In some examples, the transmitter 620 may be co-located with the receiver 610 in a transceiver module. For example, the transmitter 620 may be a reference Figure 8 Examples of aspects of the depicted transceiver 835. The transmitter 620 may include a single antenna, or it may include a group of antennas.

[0105] Figure 7According to various aspects of the present disclosure, a block diagram 700 of a UE control information manager 715 is shown that supports communication using a common set of control resources with UE-specific resources. The UE control information manager 715 may be a reference to Figure 5 、 6 8 and 9. The UE control information manager 715 may include a UE resource collection component 720, an aggregation level component 725, a decoding manager 730, a UE communication component 735, a modulation symbol component 740, a reference signal component 745, a component carrier manager 750, and a MIB component 755. Each of these modules can communicate directly or indirectly with each other (e.g., via one or more buses).

[0106] UE resource set component 720 can identify one or more control resource sets in the system bandwidth. Aggregation level component 725 can identify, for a control resource set in the one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. In some examples, the first aggregation level is associated with control information shared by UE 115 and other UEs 115 in the wireless communication system. In some cases, the first aggregation level is from a first aggregation level set that includes aggregation level four or aggregation level eight. In some cases, the second aggregation level is from a first aggregation level set that includes aggregation level one, aggregation level two, aggregation level four, aggregation level eight, or aggregation level sixteen.

[0107] The decoding manager 730 may monitor at least one first decoding candidate of a first search space according to a first aggregation level to detect common control information, and monitor at least one second decoding candidate of a second search space according to a second aggregation level to detect UE-specific control information. In some cases, the set of common control resources includes at least one of system information, paging information, a random access response message, group power control, addressing for a set of UEs 115, or any combination thereof.

[0108] UE communication component 735 can communicate based at least in part on common control information, UE-specific control information, or both. Modulation symbol component 740 can identify two or more modulation symbols within a set of control resources, wherein a first modulation symbol of the set of control resources comprises a first search space and a second modulation symbol of the set of control resources comprises a second search space.

[0109] Reference signal component 745 can receive a reference signal in a modulation symbol of a set of control resources, wherein the set of control resources includes a broadcast channel punctured by the reference signal. In some cases, frequency resources associated with a first search space of the set of control resources and frequency resources associated with a second search space at least partially overlap. In some such cases, reference signal component 745 can receive the reference signal in the overlapping frequency resources and detect control information in the overlapping frequency resources based at least in part on the reference signal.

[0110] Component carrier manager 750 may receive a message configuring multiple component carriers in a carrier aggregation configuration, wherein the system bandwidth includes the bandwidth of a first component carrier of the carrier aggregation configuration. MIB component 755 may receive a MIB for resources of a given component carrier of the carrier aggregation configuration, wherein the MIB includes an indication of the location of a set of common control resources. In some examples, MIB component 755 may determine, based on the indication in the MIB, that another component carrier does not include a set of common control resources. Additionally or alternatively, MIB component 755 may identify a set of common control resources within the bandwidth of another component carrier based on the indication in the MIB.

[0111] Figure 8 According to various aspects of the present disclosure, a diagram of a system 800 is shown that includes a device 805 that supports communication using a common set of control resources with UE-specific resources. The device 805 can be as described above (e.g., with reference to Figure 1 、 5 8 and 6) or include components of the wireless device 505, wireless device 605, or UE 115. The device 805 may include components for two-way voice and data communication, including components for sending communications and components for receiving communications, including a UE control information manager 815, a processor 820, a memory 825, software 830, a transceiver 835, an antenna 840, and an I / O controller 845. These components can communicate electronically via one or more buses (e.g., bus 810). The device 805 can communicate wirelessly with one or more base stations 105.

[0112] The processor 820 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 820 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 820. The processor 820 may be configured to execute computer-readable instructions stored in the memory to perform various functions (e.g., functions or tasks supporting a common control resource set design).

[0113] The memory 825 may include random access memory (RAM) and read-only memory (ROM). The memory 825 may store computer-readable, computer-executable software 830, which includes instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 825 may also contain, among other things, a basic input / output system (BIOS), which may control basic hardware and / or software operations, such as interaction with peripheral components or devices.

[0114] The software 830 may include code for implementing aspects of the present disclosure, including code for supporting the design of a common control resource set. The software 830 may be stored in a non-transitory computer-readable medium (such as system memory or other memory). In some cases, the software 830 may not be directly executable by a processor, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0115] The transceiver 835 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, the transceiver 835 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 835 can also include a modem for modulating packets and providing the modulated packets to the antenna for transmission, and demodulating packets received from the antenna. In some cases, the wireless device can include a single antenna 840. However, in some cases, the device can have more than one antenna 840, which can simultaneously send or receive multiple wireless transmissions.

[0116] I / O controller 845 can manage input and output signals for device 805. I / O controller 845 can also manage peripheral devices that are not integrated into device 805. In some cases, I / O controller 845 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 845 can utilize a controller such as 805. In some cases, the I / O controller 845 may be implemented as part of a processor. In some cases, a user may interact with the device 805 via the I / O controller 845 or via hardware components controlled by the I / O controller 845.

[0117] Figure 9 According to various aspects of the present disclosure, a block diagram 900 of a wireless device 905 is shown that supports communication using a common set of control resources with UE-specific resources. The wireless device 905 may be as described with reference to Figure 1 Examples of aspects of base station 105 are described. Wireless device 905 may include a receiver 910, a base station control information manager 915, and a transmitter 920. Wireless device 905 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0118] The receiver 910 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to common control resource set design, etc.). The information may be transmitted to other components of the device. The receiver 910 may be a reference Figure 12 Examples of aspects of transceiver 1235 are described.

[0119] The base station control information manager 915 may be a reference Figure 12 Examples of aspects of the base station control information manager 1215 are described herein. The base station control information manager 915 and / or at least some of its various subcomponents may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functionality of the base station control information manager 915 and / or at least some of its various subcomponents may be performed by a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or any combination thereof designed to perform the functions described in this disclosure.

[0120] The base station control information manager 915 or at least some of its various subcomponents can be physically located in various locations, including being distributed so that portions of the functionality are implemented by one or more physical devices at different physical locations. In some examples, according to various aspects of the present disclosure, the base station control information manager 915 or at least some of its various subcomponents can be separate and distinct components. In other examples, according to various aspects of the present disclosure, the base station control information manager 915 or at least some of its various subcomponents can be combined with one or more other hardware components (including but not limited to I / O components, transceivers, network servers, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0121] The base station control information manager 915 may identify one or more control resource sets in the system bandwidth and, for a control resource set in the one or more control resource sets, identify a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. In some cases, the base station control information manager 915 may map common control information to at least one first decoding candidate of the first search space based on the first aggregation level and map UE-specific control information to at least one second decoding candidate of the second search space based on the second aggregation level. The base station control information manager 915 may communicate with the UE based at least in part on the common control information, the UE-specific control information, or both.

[0122] The transmitter 920 may transmit signals generated by other components of the device. In some examples, the transmitter 920 may be co-located with the receiver 910 in a transceiver module. For example, the transmitter 920 may be a reference Figure 12 Examples of aspects of the described transceiver 1235. The transmitter 920 may include a single antenna, or it may include a group of antennas.

[0123] Figure 10 According to various aspects of the present disclosure, a block diagram 1000 of a wireless device 1005 is shown that supports communication using a common set of control resources with UE-specific resources. The wireless device 1005 may be as described with reference to Figure 1 and 9 Examples of aspects of the wireless device 905 or base station 105 are described. The wireless device 1005 may include a receiver 1010, a base station control information manager 1015, and a transmitter 1020. The wireless device 1005 may also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0124] The receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to common control resource set design, etc.). The information may be transmitted to other components of the device. The receiver 1010 may be a reference Figure 12 Examples of aspects of transceiver 1235 are described.

[0125] The base station control information manager 1015 may be a reference Figure 12 Examples of aspects of the base station control information manager 1215 are described. The base station control information manager 1015 may also include a base station resource collection component 1025, a base station aggregation level component 1030, a control resource mapping component 1035, and a base station communication component 1040. The base station resource collection component 1025 may identify one or more control resource sets in the system bandwidth.

[0126] Base station aggregation level component 1030 can identify, for a control resource set in one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. In some cases, the first aggregation level is associated with control information shared by the UE and other UEs operating in the system bandwidth. In some cases, the first aggregation level comprises aggregation level 4 or aggregation level 8. In some cases, the second aggregation level comprises aggregation level 1, aggregation level 2, aggregation level 4, aggregation level 8, or aggregation level 16.

[0127] Control resource mapping component 1035 may map common control information to at least one first decoding candidate of a first search space based on a first aggregation level; and may map UE-specific control information to at least one second decoding candidate of a second search space based on a second aggregation level. In some cases, the set of control resources includes at least one of system information, paging information, a random access response message, group power control, addressing for a set of UEs, or any combination thereof. In some cases, frequency resources associated with the first aggregation level for a subband and frequency resources associated with the second aggregation level for the subband at least partially overlap. In some cases, control resource mapping component 1035 may transmit a reference signal in the overlapping frequency resources; and map the control information in the overlapping frequency resources based at least in part on the reference signal.

[0128] The base station communication component 1040 can communicate based on control information sent in a common set of control resources or UE-specific control resources, or both. The transmitter 1020 can transmit signals generated by other components of the device. In some cases, the transmitter 1020 can transmit a reference signal in a modulation symbol of a common set of control resources, wherein the common set of control resources includes a broadcast channel punctured by the reference signal. In some examples, the transmitter 1020 can be co-located with the receiver 1010 in a transceiver module. For example, the transmitter 1020 can be a reference signal. Figure 12 Examples of aspects of the described transceiver 1235. The transmitter 1020 may include a single antenna, or it may include a group of antennas.

[0129] Figure 11 According to various aspects of the present disclosure, a block diagram 1100 of a base station control information manager 1115 is shown that supports communications using a common control resource set design. The base station control information manager 1115 may be a reference Figure 9 、 10 12 and 12. The base station control information manager 1115 may include a base station resource collection component 1120, a base station aggregation level component 1125, a control resource mapping component 1130, a base station communication component 1135, a symbol configuration component 1140, a carrier aggregation component 1145, and a MIB manager 1150. Each of these modules can communicate directly or indirectly with each other (e.g., via one or more buses).

[0130] Base station resource aggregation component 1120 can identify a set of subbands of a system bandwidth that include control resources in the wireless communication system. Base station aggregation level component 1125 can identify a first aggregation level and a second aggregation level for a subband in the set of subbands, wherein the subbands are configured to carry a common set of control resources shared by UE 115 and other UEs 115 in the wireless communication system. In some cases, the first aggregation level is associated with control information shared by UE 115 and other UEs 115 in the wireless communication system. In some cases, the first aggregation level comprises aggregation level 4 or aggregation level 8. In some cases, the second aggregation level comprises aggregation level 1, aggregation level 2, aggregation level 4, aggregation level 8, or aggregation level 16.

[0131] Control resource mapping component 1130 may map a set of common control resources to a first decoding candidate for a subband based on a first aggregation level; and map UE-specific control resources to a second decoding candidate for a subband based on a second aggregation level. In some cases, the set of control resources includes at least one of system information, paging information, a random access response message, group power control, addressing for a set of UEs, or any combination thereof. In some cases, frequency resources associated with the first search space and frequency resources associated with the second search space at least partially overlap. In some cases, control resource mapping component 1130 may transmit a reference signal in the overlapping frequency resources; and map the control information in the overlapping frequency resources based at least in part on the reference signal.

[0132] Base station communication component 1135 can communicate with the UE based at least in part on common control information, UE-specific control information, or both. Modulation configuration component 1140 can identify two or more modulation symbols within a set of control resources, wherein a first modulation symbol of the set of control resources comprises a first search space and a second modulation symbol of the set of control resources comprises a second search space.

[0133] Carrier aggregation component 1145 may send a message configuring multiple component carriers in a carrier aggregation configuration, wherein the system bandwidth includes the bandwidth of a first component carrier of the carrier aggregation configuration. MIB manager 1150 may send a MIB on resources of a given component carrier of the carrier aggregation configuration, wherein the MIB includes an indication of the location of a set of common control resources. MIB manager 1150 may indicate in the MIB that a given component carrier includes a set of control resources. In some cases, MIB manager 1150 may indicate in the MIB that the set of control resources is located within the bandwidth of another component carrier.

[0134] Figure 12 According to various aspects of the present disclosure, a diagram of a system 1200 is shown that includes a device 1205 that supports communication using a common set of control resources with UE-specific resources. The device 1205 can be as described above (e.g., with reference to Figure 1 ) or include components of a base station 105. Device 1205 may include components for two-way voice and data communication, including components for sending communications and components for receiving communications, including a base station control information manager 1215, a processor 1220, a memory 1225, software 1230, a transceiver 1235, an antenna 1240, a network communication manager 1245, and a base station communication manager 1250. These components may communicate electronically via one or more buses (e.g., bus 1210). Device 1205 may communicate wirelessly with one or more UEs 115.

[0135] The processor 1220 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 1220 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 1220. The processor 1220 may be configured to execute computer-readable instructions stored in the memory to perform various functions (e.g., functions or tasks supporting a common control resource set design).

[0136] The memory 1225 may include RAM and ROM. The memory 1225 may store computer-readable, computer-executable software 1230, which includes instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 1225 may also contain, among other things, a BIOS that may control basic hardware and / or software operations, such as interaction with peripheral components or devices.

[0137] The software 1230 may include code for implementing aspects of the present disclosure, including code for supporting the design of a common control resource set. The software 1230 may be stored in a non-transitory computer-readable medium (such as system memory or other memory). In some cases, the software 1230 may not be directly executable by a processor, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0138] The transceiver 1235 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, the transceiver 1235 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1235 can also include a modem for modulating packets and providing the modulated packets to the antenna for transmission, and demodulating packets received from the antenna. In some cases, the wireless device can include a single antenna 1240. However, in some cases, the device can have more than one antenna 1240, which can simultaneously send or receive multiple wireless transmissions.

[0139] The network communications manager 1245 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1245 may manage the transmission of data communications for client devices, such as one or more UEs 115.

[0140] Base station communication manager 1250 can manage communications with other base stations 105 and can include a controller or scheduler for controlling communications with UE 115 in cooperation with other base stations 105. For example, base station communication manager 1250 can coordinate the scheduling of transmissions to UE 115 to implement various interference mitigation techniques such as beamforming or joint transmission. In some examples, base station communication manager 1250 can provide an X2 interface in LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0141] Figure 13 According to various aspects of the present disclosure, a flow chart illustrating a method 1300 for communicating based on a common control resource set design is shown. The operations of the method 1300 may be implemented by the UE 115 or its components as described herein. For example, the operations of the method 1300 may be performed by a UE control information manager, as described with reference to Figures 5 to 8 In some examples, the UE 115 may execute a code set to control functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the functions described below.

[0142] At block 1305, the UE 115 may identify one or more control resource sets in the system bandwidth. Figures 1 to 4 The method described herein performs the operations of block 1305. In some examples, aspects of the operations of block 1305 may be performed by a UE resource collection component, as described with reference to Figures 5 to 8 Descriptive.

[0143] At block 1310, the UE 115 may identify, for a control resource set in one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. Figures 1 to 4 The method described herein performs the operations of block 1310. In some examples, aspects of the operations of block 1310 may be performed by an aggregation level component, such as that described with reference to Figures 5 to 8 Descriptive.

[0144] At block 1315, the UE 115 may monitor at least one first decoding candidate of the first search space according to the first aggregation level to detect the common control information. Figures 1 to 4 The methods described herein perform the operations of block 1315. In some examples, aspects of the operations of block 1315 may be performed by a decode manager, as described with reference to Figures 5 to 8 Descriptive.

[0145] At block 1320, the UE 115 may monitor at least one second decoding candidate of the second search space according to the second aggregation level to detect UE-specific control information. Figures 1 to 4 The methods described herein perform the operations of block 1320. In some examples, aspects of the operations of block 1320 may be performed by a decode manager, as described with reference to Figures 5 to 8 Descriptive.

[0146] At block 1325, the UE 115 may communicate based at least in part on the common control information, the UE-specific control information, or both. Figures 1 to 4 In some examples, aspects of the operations of block 1325 may be performed by a UE communication component, as described with reference to Figures 5 to 8 Descriptive.

[0147] Figure 14 According to various aspects of the present disclosure, a flow chart illustrating a method 1400 for communicating based on a common control resource set design is shown. The operations of the method 1400 may be implemented by the UE 115 or its components as described herein. For example, the operations of the method 1400 may be performed by a UE control information manager, as described with reference to Figures 5 to 8 In some examples, the UE 115 may execute a code set to control functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the functions described below.

[0148] At block 1405, the UE 115 may identify one or more control resource sets in the system bandwidth. Figures 1 to 4 The method described herein performs the operations of block 1405. In some examples, aspects of the operations of block 1405 may be performed by a UE resource collection component, as described with reference to Figures 5 to 8 Descriptive.

[0149] At block 1410, the UE 115 may identify, for a control resource set in one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. Figures 1 to 4 The method described herein performs the operations of block 1410. In some examples, aspects of the operations of block 1410 may be performed by an aggregation level component, such as that described with reference to Figures 5 to 8 Descriptive.

[0150] At block 1415, the UE 115 may identify two or more modulation symbols within a set of control resources, wherein a first modulation symbol of the set of control resources comprises a first search space and a second modulation symbol of the set of control resources comprises a second search space. Figures 1 to 4 The method described herein performs the operations of block 1415. In some examples, aspects of the operations of block 1415 may be performed by a modulation symbol component, as described with reference to Figures 5 to 8 Descriptive.

[0151] At block 1420, the UE 115 may monitor at least one first decoding candidate of the first search space according to the first aggregation level to detect common control information. Figures 1 to 4 The operations of block 1420 may be performed in a manner described herein. In some examples, aspects of the operations of block 1420 may be performed by a decode manager, as described with reference to Figures 5 to 8 Descriptive.

[0152] At block 1425, the UE 115 may monitor at least one second decoding candidate of the second search space according to the second aggregation level to detect UE-specific control information. Figures 1 to 4 The operations of block 1425 may be performed in a manner described herein. In some examples, aspects of the operations of block 1425 may be performed by a decode manager, as described with reference to Figures 5 to 8 Descriptive.

[0153] At block 1430, the UE 115 may communicate based at least in part on the common control information, the UE-specific control information, or both. Figures 1 to 4 In some examples, aspects of the operations of block 1430 may be performed by a UE communication component, as described with reference to Figures 5 to 8 Descriptive.

[0154] Figure 15 According to various aspects of the present disclosure, a flow chart illustrating a method 1500 for communicating based on a common control resource set design is shown. The operations of the method 1500 may be implemented by the UE 115 or its components as described herein. For example, the operations of the method 1300 may be performed by a UE control information manager, as described with reference to Figures 5 to 8 In some examples, the UE 115 may execute a code set to control functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the functions described below.

[0155] At block 1505, the UE 115 may identify one or more control resource sets in the system bandwidth. Figures 1 to 4The method described herein performs the operations of block 1505. In some examples, aspects of the operations of block 1505 may be performed by a UE resource collection component, as described with reference to Figures 5 to 8 Descriptive.

[0156] At block 1510, the UE 115 may identify, for a control resource set in one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. Figures 1 to 4 The method described herein performs the operations of block 1510. In some examples, aspects of the operations of block 1510 may be performed by an aggregation level component, such as that described with reference to Figures 5 to 8 Descriptive.

[0157] At block 1515, the UE 115 may monitor at least one first decoding candidate of the first search space according to the first aggregation level to detect the common control information. Figures 1 to 4 The methods described herein perform the operations of block 1515. In some examples, aspects of the operations of block 1515 may be performed by a decode manager, as described with reference to Figures 5 to 8 Descriptive.

[0158] At block 1520, the UE 115 may monitor at least one second decoding candidate of the second search space according to the second aggregation level to detect UE-specific control information. Figures 1 to 4 The methods described herein perform the operations of block 1520. In some examples, aspects of the operations of block 1520 may be performed by a decode manager, as described with reference to Figures 5 to 8 Descriptive.

[0159] At block 1525, the UE 115 may receive a reference signal in a modulation symbol of a set of control resources, wherein the set of control resources includes a broadcast channel punctured by the reference signal. In some cases, frequency resources associated with a first search space of a subband and frequency resources associated with a second search space of the set of control resources at least partially overlap. In some cases, the UE 115 may receive the reference signal in the overlapping frequency resources; and detect control information in the overlapping frequency resources based at least in part on the reference signal. Figures 1 to 4 The method described herein performs the operations of block 1525. In some examples, aspects of the operations of block 1525 can be performed by a reference signal component, such as a reference signal component. Figures 5 to 8 Descriptive.

[0160] At block 1530, the UE 115 may communicate based at least in part on the common control information, the UE-specific control information, or both. Figures 1 to 4In some examples, aspects of the operations of block 1530 may be performed by a UE communication component, as described with reference to Figures 5 to 8 Descriptive.

[0161] Figure 16 According to various aspects of the present disclosure, a flow chart illustrating a method 1600 for communicating based on a common control resource set design is shown. The operations of the method 1600 may be implemented by the UE 115 or its components as described herein. For example, the operations of the method 1600 may be performed by a UE control information manager, as described with reference to Figures 5 to 8 In some examples, the UE 115 may execute a code set to control functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the functions described below.

[0162] At block 1605, the UE 115 may identify one or more control resource sets in the system bandwidth. Figures 1 to 4 The method described herein performs the operations of block 1610. In some examples, aspects of the operations of block 1610 may be performed by a UE resource collection component, as described with reference to Figures 5 to 8 Descriptive.

[0163] At block 1610, the UE 115 may receive a message configuring a plurality of component carriers in a carrier aggregation configuration, wherein the system bandwidth includes the bandwidth of a first component carrier of the carrier aggregation configuration. Figures 1 to 4 The method described herein performs the operations of block 1605. In some examples, aspects of the operations of block 1605 may be performed by a component carrier manager, as described with reference to Figures 5 to 8 Descriptive.

[0164] At block 1615, UE 115 may receive a MIB on resources of a second component carrier of the carrier aggregation configuration, wherein the MIB includes an indication of a location of a set of control resources. Figures 1 to 4 In some examples, aspects of the operations of block 1620 may be performed by a MIB component, such as that described in Figures 5 to 8 Descriptive.

[0165] At block 1620, the UE 115 may identify, for a control resource set in one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. Figures 1 to 4 The method described herein performs the operations of block 1615. In some examples, aspects of the operations of block 1615 may be performed by an aggregation level component, as described with reference to Figures 5 to 8Descriptive.

[0166] At block 1625, the UE 115 may monitor at least one first decoding candidate of the first search space according to the first aggregation level to detect the common control information. Figures 1 to 4 The operations of block 1625 may be performed in a manner described herein. In some examples, aspects of the operations of block 1625 may be performed by a decode manager, as described with reference to Figures 5 to 8 Descriptive.

[0167] At block 1630, the UE 115 may monitor at least one second decoding candidate of the second search space according to the second aggregation level to detect UE-specific control information. Figures 1 to 4 The methods described herein perform the operations of block 1630. In some examples, aspects of the operations of block 1630 may be performed by a decode manager, as described with reference to Figures 5 to 8 Descriptive.

[0168] At block 1635, the UE 115 may communicate based at least in part on the common control information, the UE-specific control information, or both. Figures 1 to 4 The method described herein performs the operations of block 1635. In some examples, aspects of the operations of block 1635 may be performed by a UE communication component, as described with reference to Figures 5 to 8 Descriptive.

[0169] Figure 17 According to various aspects of the present disclosure, a flow chart illustrating a method 1700 for communicating based on a common control resource set design is shown. The operations of the method 1700 may be implemented by the base station 105 or its components as described herein. For example, the operations of the method 1700 may be performed by a base station control information module, as described with reference to Figures 9 to 12 In some examples, the base station 105 may execute a code set to control functional elements of the device to perform the functions described below. Additionally or alternatively, the base station 105 may use dedicated hardware to perform aspects of the functions described below.

[0170] At block 1705, the base station 105 may identify one or more control resource sets in the system bandwidth. Figures 1 to 4 The method described herein performs the operations of block 1705. In some examples, aspects of the operations of block 1705 may be performed by a base station resource collection component, as described with reference to Figures 9 to 12 Descriptive.

[0171] At block 1710, the base station 105 may identify, for a control resource set in one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. Figures 1 to 4 The method described herein performs the operations of block 1710. In some examples, aspects of the operations of block 1710 may be performed by a base station aggregation level component, as described with reference to Figures 9 to 12 Descriptive.

[0172] At block 1715, the base station 105 may map the common control information to at least one first decoding candidate of the first search space according to the first aggregation level. Figures 1 to 4 The method described herein performs the operations of block 1715. In some examples, aspects of the operations of block 1715 can be performed by a control resource mapping component, as described with reference to Figures 9 to 12 Descriptive.

[0173] At block 1720, the base station 105 may map the UE-specific control information to at least one second decoding candidate of the second search space according to the second aggregation level. Figures 1 to 4 The method described herein performs the operations of block 1720. In some examples, aspects of the operations of block 1720 may be performed by a control resource mapping component, as described with reference to Figures 9 to 12 Descriptive.

[0174] At block 1725, the base station 105 may transmit UE-specific control information to at least one second decoding candidate of the second search space according to the second aggregation level. Figures 1 to 4 In some examples, aspects of the operations of block 1725 may be performed by a base station communication component, such as with reference to Figures 9 to 12 Descriptive.

[0175] Figure 18 According to various aspects of the present disclosure, a flow chart illustrating a method 1800 for communicating based on a common control resource set design is shown. The operations of the method 1800 may be implemented by the base station 105 or its components as described herein. For example, the operations of the method 1800 may be performed by a base station control information module, as described with reference to Figures 9 to 12 In some examples, the base station 105 may execute a code set to control functional elements of the device to perform the functions described below. Additionally or alternatively, the base station 105 may use dedicated hardware to perform aspects of the functions described below.

[0176] At block 1805, the base station 105 may identify one or more control resource sets in the system bandwidth. Figures 1 to 4The method described herein performs the operations of block 1805. In some examples, aspects of the operations of block 1805 may be performed by a base station resource collection component, as described with reference to Figures 9 to 12 Descriptive.

[0177] At block 1810, the base station 105 may identify, for a control resource set in one or more control resource sets, a first aggregation level associated with a first search space and a second aggregation level associated with a second search space. Figures 1 to 4 The method described herein performs the operations of block 1810. In some examples, aspects of the operations of block 1810 may be performed by a base station aggregation level component, as described with reference to Figures 9 to 12 Descriptive.

[0178] At block 1815, the base station 105 may configure two or more modulation symbols within a control resource set, wherein a first modulation symbol of the control resource set comprises a first search space and a second modulation symbol of the control resource set comprises a second search space. For example, multiple modulation symbols may be used for transmission of control information in a common control resource set, and the first modulation symbol may carry broadcast-based control information and the second modulation symbol may carry UE-specific control information. Figures 1 to 4 In some examples, aspects of the operations of block 1815 can be performed by a symbol configuration component, such as with reference to Figures 9 to 12 Descriptive.

[0179] At block 1820, the base station 105 may map the common control information to at least one first decoding candidate of the first search space according to the first aggregation level. Figures 1 to 4 The method described herein performs the operations of block 1820. In some examples, aspects of the operations of block 1820 may be performed by a control resource mapping component, as described with reference to Figures 9 to 12 Descriptive.

[0180] At block 1825, the base station 105 may map the UE-specific control information to at least one second decoding candidate of the second search space according to the second aggregation level. Figures 1 to 4 The method described herein performs the operations of block 1825. In some examples, aspects of the operations of block 1825 can be performed by a control resource mapping component, as described with reference to Figures 9 to 12 Descriptive.

[0181] At block 1830, the base station 105 may transmit UE-specific control information to at least one second decoding candidate of the second search space according to the second aggregation level. Figures 1 to 4In some examples, aspects of the operations of block 1830 may be performed by a base station communication component, such as with reference to Figures 9 to 12 Descriptive.

[0182] It should be noted that the methods described above describe possible implementations, and that operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Furthermore, aspects from two or more of these methods may be combined.

[0183] The techniques described herein can be used in 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. The terms "system" and "network" are often used interchangeably. A code division multiple access (CDMA) system can implement radio technologies such as CDMA 2000 and Universal Terrestrial Radio Access (UTRA). CDMA 2000 covers the IS-2000, IS-95, and IS-856 standards. Versions of IS-2000 are often referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is often referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variations of CDMA. A time division multiple access (TDMA) system can implement radio technologies such as Global System for Mobile Communications (GSM).

[0184] Orthogonal Frequency Division Multiple Access (OFDMA) systems can implement wireless technologies such as Ultra Mobile Broadband (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, and the like. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are versions of the Universal Mobile Telecommunications System (UMTS) that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, NR, and Global System for Mobile Communications (GSM) are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA 2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein can be used for the systems and radio technologies mentioned above, as well as other systems and radio technologies. Although aspects of LTE or NR systems may be described for example purposes, and LTE or NR terminology is used throughout much of the description, the techniques described herein have applicability beyond LTE or NR applications.

[0185] In LTE / LTE-A networks (including those described herein), the term evolved Node B (eNB) may be generally used to describe a base station. One or more wireless communication systems described herein may include heterogeneous LTE / LTE-A or NR networks, in which different types of evolved Node Bs (eNBs) provide coverage for various geographic areas. For example, each eNB, gNB, or base station may provide communication coverage for a macro cell, a small cell, or other type of cell. The term "cell" may be used to describe a base station, a carrier or component carrier associated with a base station, or a coverage area (e.g., a sector, etc.) of a carrier or base station, depending on the context.

[0186] A base station may include or may be referred to by those skilled in the art as a base transceiver, a wireless base station, an access point, a wireless transceiver, a Node B, an evolved Node B (eNB), a next generation Node B (gNB), a Home Node B, a Home evolved Node B, or some other appropriate terminology. The geographic coverage area of ​​a base station may be divided into sectors, with a sector constituting only a portion of the coverage area. One or more wireless communication systems described herein may include different types of base stations (e.g., macro cell base stations or small cell base stations). The UEs described herein are capable of communicating with various types of base stations and network devices, including macro eNBs, small cell eNBs, gNBs, relay base stations, and the like. There may be overlapping geographic coverage areas for different technologies.

[0187] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs with a service subscription with the network provider. Compared to a macro cell, a small cell is a lower-power base station that may operate in the same or different frequency band (e.g., licensed, unlicensed, etc.) as the macro cell. According to various examples, small cells may include pico cells, femto cells, and micro cells. For example, a pico cell may cover a small geographic area and may allow unrestricted access by UEs with a service subscription with the network provider. A femto cell may also cover a small geographic area (e.g., a residence) and may provide restricted access by UEs associated with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG), UEs for users in a residence, 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, pico eNB, femto eNB, or home eNB. An eNB may support one or more (e.g., two, three, four, etc.) cells (e.g., component carriers).

[0188] One or more wireless communication systems described herein may support synchronous operation or asynchronous operation. For synchronous operation, base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time. For asynchronous operation, base stations may have different frame timing, and transmissions from different base stations may not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operation.

[0189] Downlink transmissions described herein may also be referred to as forward link transmissions, and uplink transmissions may also be referred to as reverse link transmissions. Each communication link described herein (including, for example, Figure 1 and 2 The wireless communication systems 100 and 200 may include one or more carriers, where each carrier may be a signal composed of multiple subcarriers (eg, waveform signals of different frequencies).

[0190] The description set forth herein in conjunction with the accompanying drawings describes exemplary configurations and does not represent all examples that can be implemented or within the scope of the claims. The term "exemplary" as used herein means "serving as an example, instance, or illustration" and does not mean "preferred" or "having advantages over other examples." For the purpose of providing an understanding of the described techniques, the detailed description includes specific details. However, these techniques can be implemented without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0191] In the accompanying drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a dash and a second label to distinguish between similar components. If only the first reference label is used in the specification, the description may apply to any of the similar components having the same first reference label, regardless of the second reference label.

[0192] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0193] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative embodiment, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0194] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on a computer-readable medium or transmitted therethrough. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the characteristics of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hard wiring, or any combination of these. The features used to implement the functions can also be physically located in various locations, including being distributed so that part of the functions are implemented in different physical locations. In addition, as used herein (including in the claims), the "or" used in a list of items (e.g., a list of items ending with a phrase such as "at least one of..." or "one or more of...") indicates a disjunctive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an exemplary step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on" is interpreted.

[0195] Computer readable medium includes both non-transitory computer storage medium and communication medium, and described communication medium includes any medium that promotes computer program to be transferred from one place to another place.Non-transitory storage medium can be any available medium that can be accessed by general or special-purpose computer.By way of example and not limitation, non-transitory computer readable medium can include RAM, ROM, electrically erasable programmable read-only memory (EEPROM), compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage device or can be used for carrying or storing desired program code unit and any other non-transitory medium that can be accessed by general or special-purpose computer or general or special-purpose processor in the form of instruction or data structure.In addition, any connection is suitably referred to as computer readable medium.For example, if software is sent from website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology (such as infrared, radio and microwave), then coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology (such as infrared, radio and microwave) are included in the definition of medium. As used herein, disk and disc include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0196] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the examples and designs described herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication performed by a user equipment (UE), comprising: receiving a master information block (MIB), wherein the MIB includes an indication of the presence of a set of common control resources in a system bandwidth, the set of common control resources being configured to carry control information common to a plurality of UEs, wherein the set of common control resources includes a common search space and a UE-specific search space, wherein each search space is formed by a set of indexed control channel elements (CCEs); identifying a location of the set of common control resources in the system bandwidth based at least in part on the indication in the received MIB; monitoring the common search space of the set of common control resources to detect common control information based at least in part on the presence of the set of common control resources, wherein the common control information comprises system information; monitoring the UE-specific search space of the common control resource set to detect UE-specific control information based at least in part on the presence of the common control resource set, wherein a starting index of the UE-specific search space depends on a cell radio network temporary identifier (C-RNTI); and Communicating is performed based at least in part on the common control information, the UE-specific control information, or both.

2. The method according to claim 1, further comprising: A reference signal is received in a modulation symbol of the set of common control resources, wherein the set of common control resources includes a broadcast channel punctured by the reference signal.

3. The method according to claim 1, further comprising: A message for configuring a plurality of component carriers in a carrier aggregation configuration is received, wherein the system bandwidth includes a bandwidth of a first component carrier of the carrier aggregation configuration.

4. The method according to claim 3, wherein: The system bandwidth also includes the second component carrier of the carrier aggregation configuration; The MIB is received on the second component carrier; and The location of the set of common control resources is identified as being in the first component carrier of the carrier aggregation configuration.

5. The method according to claim 3, wherein The MIB is received on the first component carrier and indicates that the set of common control resources is not present in the first component carrier.

6. The method according to claim 1, wherein The set of common control resources includes at least one of the following: system information, paging information, random access response message, group power control, addressing to multiple UEs, or any combination thereof.

7. A method for wireless communication performed by a network entity, comprising: transmitting a master information block (MIB), wherein the MIB includes an indication of the presence of a set of common control resources in a system bandwidth, wherein the set of common control resources is configured to carry control information common to multiple UEs, wherein the set of common control resources includes a common search space and a UE-specific search space, wherein each search space is formed by a set of indexed control channel elements (CCEs); Mapping public control information to the public search space of the public control resource set; Mapping control information specific to a user equipment (UE) to the UE-specific search space of the common control resource set; and Communicating with the UE is performed based at least in part on the common control information, the UE-specific control information, or both.

8. The method according to claim 7, further comprising: A reference signal is sent in a modulation symbol of the common control resource set, wherein the common control resource set includes a broadcast channel punctured by the reference signal.

9. The method according to claim 7, further comprising: A message is sent to configure multiple component carriers in a carrier aggregation configuration, wherein the system bandwidth includes a bandwidth of a first component carrier of the carrier aggregation configuration.

10. The method according to claim 7, wherein: The set of common control resources includes at least one of the following: system information, paging information, random access response message, group power control, addressing to multiple UEs, or any combination thereof.

11. A mobile device for wireless communication, comprising: means for receiving a master information block (MIB), wherein the MIB comprises an indication of the presence of a set of common control resources in a system bandwidth, the set of common control resources being configured to carry control information common to a plurality of UEs, wherein the set of common control resources comprises a common search space and a UE-specific search space, wherein each search space is formed by a set of indexed control channel elements (CCEs); means for identifying a location of the set of common control resources in the system bandwidth based at least in part on the indication in the received MIB; means for monitoring the common search space of the set of common control resources to detect common control information based at least in part on the presence of the set of common control resources, wherein the common control information comprises system information; means for monitoring the UE-specific search space of the common control resource set to detect UE-specific control information based at least in part on the presence of the common control resource set, wherein a starting index of the UE-specific search space depends on a cell radio network temporary identifier (C-RNTI); and Means for communicating based at least in part on the common control information, the UE-specific control information, or both.

12. The mobile device according to claim 11, further comprising: Means for receiving a reference signal in a modulation symbol of the set of common control resources, wherein the set of common control resources comprises a broadcast channel punctured by the reference signal.

13. A network device for wireless communication, comprising: means for transmitting a master information block (MIB), wherein the MIB comprises an indication of the presence of a set of common control resources in a system bandwidth, the set of common control resources being configured to carry control information common to a plurality of user equipments (UEs), wherein the set of common control resources comprises a common search space and a UE-specific search space, wherein each search space is formed by a set of indexed control channel elements (CCEs); means for mapping common control information to the common search space of the set of common control resources; means for mapping control information specific to a user equipment (UE) to the UE-specific search space of the common control resource set; and Means for communicating with the UE based at least in part on the common control information, the UE-specific control information, or both.

14. The network device according to claim 13, further comprising: Means for sending a reference signal in a modulation symbol of the set of common control resources, wherein the set of common control resources comprises a broadcast channel punctured by the reference signal.

15. An apparatus for wireless communication at a mobile device, comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: receiving a master information block (MIB), wherein the MIB includes an indication of the presence of a set of common control resources in a system bandwidth, the set of common control resources being configured to carry control information common to a plurality of UEs, wherein the set of common control resources includes a common search space and a UE-specific search space, wherein each search space is formed by a set of indexed control channel elements (CCEs); identifying a location of the set of common control resources in the system bandwidth based at least in part on the indication in the received MIB; monitoring the common search space of the set of common control resources to detect common control information based at least in part on the presence of the set of common control resources, wherein The public control information includes system information; monitoring the UE-specific search space of the common control resource set to detect UE-specific control information based at least in part on the presence of the common control resource set, wherein a starting index of the UE-specific search space depends on a cell radio network temporary identifier (C-RNTI); and Communicating is performed based at least in part on the common control information, the UE-specific control information, or both.

16. The apparatus of claim 15, wherein the instructions are further executable by the processor to cause the apparatus to: A reference signal is received in a modulation symbol of the common control resource set, wherein: The set of common control resources includes a broadcast channel punctured by the reference signal.

17. An apparatus for wireless communication at a network device, comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: transmitting a master information block (MIB), wherein the MIB includes an indication of the presence of a common control resource set in a system bandwidth, wherein the common control resource set is configured to carry control information common to a plurality of user equipments (UEs), wherein the common control resource set includes a common search space and a UE-specific search space, wherein each search space is formed by a set of indexed control channel elements (CCEs); Mapping public control information to the public search space of the public control resource set; Mapping user equipment (UE)-specific control information to the UE-specific search space of the common control resource set; and Communicating with the UE is performed based at least in part on the common control information, the UE-specific control information, or both.

18. The apparatus of claim 17, wherein the instructions are further executable by the processor to cause the apparatus to: A reference signal is sent in a modulation symbol of the common control resource set, wherein: The set of common control resources includes a broadcast channel punctured by the reference signal.

Images