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AssigneeQUALCOMM Incorporated
InventorsWooseok Nam, Sony Akkarakaran, Tao Luo, Xiao Feng Wang, Makesh Pravin John Wilson, Sumeeth Nagaraja, Shengbo Chen, Yan Zhou
Estimating the term…
Methods, systems, and devices for wireless communications are described. A base station may identify time and frequency resources for a physical downlink shared channel (PDSCH) to be transmitted to a user equipment (UE) in a first transmission time interval (TTI). The base station may transmit configuration information for a control channel search space set in a second TTI. The second TTI may precede the first TTI. The configuration information may include an indication of an absence of a physical downlink control channel (PDCCH) transmission to send in the control channel search space set indicating the identified time and frequency resources for the PDSCH, and a set of time and frequency resources for the control channel search space set. The UE may receive the configuration information and identify the time and frequency resources allocated for the PDSCH in the second TTI, and receive the PDSCH transmission in the second TTI.
A method for wireless communication at a user equipment (UE), comprising:
An apparatus for wireless communication, comprising:
An apparatus for wireless communication, comprising:
A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to:
Dependencies are inferred from the claim text.
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Two-dimensional division: time-frequency
By using forward error control: arrangements at the receiver end
Arrangements at the receiver end: decoding adapted to other signal detection operation
By using forward error control: error control for data other than payload data, e.g. control data
About 12 years 5 months of term left · ends 4 Apr 2039 (estimated)
The following relates generally to wireless communication, and more specifically to virtual search space sets for beam indication.
Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform-spread-OFDM (DFT-S-OFDM). A wireless multiple-access communications system may include a number of base stations or network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE).
A base station may send control transmissions (e.g., downlink control information (DCI) via a physical downlink control channel (PDCCH) to the UE. The UE may be configured to monitor a PDCCH within a search space set, which may include multiple search candidates. For instance, each search space set may be associated with one or more control resource sets (coresets) containing multiple control channel elements (CCEs). The UE may be configured to monitor one or more search candidates in the search space set, and may blindly decode the one or more CCEs of the search candidate to receive the control information.
FIGS. 1 and 2 illustrate examples of a wireless communications system that supports virtual search space sets for beam indication in accordance with aspects of the present disclosure.
FIG. 3 illustrates an example of a configuration that supports virtual search space sets for beam indication in accordance with aspects of the present disclosure.
FIG. 4 illustrates an example of a process flow that supports virtual search space sets for beam indication in accordance with aspects of the present disclosure.
A base station may transmit control information to a user equipment (UE) within a configured search space set. The search space set may include one or more control resource sets (coresets) containing multiple control channel elements (CCEs). The base station may transmit the control information in search candidates (e.g., physical downlink control channel (PDCCH) candidates) on different aggregation levels within the coresets. In some cases, the base station may additionally transmit an indication of the search space configuration to the UE. The UE may monitor a channel (e.g., a PDCCH) for downlink control information (DCI) from the base station according to the search space configuration.
The UE may detect and decode the control information within the search candidates. In some cases, the UE may receive transmissions from the base station according to the search space configuration. The DCI may include schedule and resource allocations for transmitting from the base station (and receiving at the UE) a downlink data transmission (e.g., on a physical downlink shared channel (PDSCH)). In some cases, the UE may receive the PDCCH on a first beam during a first transmission time interval (TTI) and the PDSCH on a second beam during a second TTI based on the search space configuration. The search space configuration may be associated with a virtual search space set (corresponding to zero PDCCH candidates configured to be in the search space set) or a normal search space set (corresponding to one or more PDCCH candidates configured to be in the search space set).
Aspects of the disclosure are initially described in the context of a wireless communications system. Aspects of the disclosure are further illustrated in the context of a configuration and process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to virtual search space sets for beam indication.