CN-122027428-A - Synchronization signal block and control resource set multiplexing in wireless communication

Abstract

Methods, systems, and devices for wireless communication provide techniques for multiplexing a Synchronization Signal Block (SSB) and a control resource set (CORESET) in the frequency domain to form a multiplexed block that is transmitted using a set of symbols. A base station may transmit multiple multiplexing blocks using multiple different beams, wherein a switching gap is provided between each multiplexing block that allows Radio Frequency (RF) components to be switched between the different beams. The switching gap is longer than a duration of a Cyclic Prefix (CP) associated with each symbol in the set of symbols for each multiplexing block. Within one or more of the multiplexing blocks, the associated SSB may use a different waveform than CORESET. The multiplexing block may use a common reference signal for both SSBs and CORESET.

Inventors

• 1. I. shahenini
• LUO TAO

Assignees

• 高通股份有限公司

Dates

Publication Date

20260512

Application Date

20220110

Priority Date

20210212

Claims (20)

1. 1. An apparatus for wireless communication at a User Equipment (UE), comprising: A processor; A memory coupled to the processor, and Instructions stored in the memory and executable by the processor to cause the apparatus to: Monitoring a first beam for a first multiplexing block comprising a first synchronization signal block multiplexed with a first set of control resources in the frequency domain; estimating a channel associated with the first synchronization signal block and the first set of control resources based at least in part on a first reference signal contained in a set of reference signal resources spanning the first synchronization signal block and the first set of control resources, and At least a portion of one or more of the first synchronization signal block or the first set of control resources is decoded based at least in part on the estimation of the channel.
2. 2. The apparatus of claim 1, wherein the first reference signal spans frequency domain resources of the set of reference signal resources associated with each of the first synchronization signal block and the first set of control resources.
3. 3. The apparatus of claim 1, wherein the first reference signal spans a fixed frequency bandwidth of the set of reference signal resources.
4. 4. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: blind decoding two or more frequency bandwidth candidates within the set of reference signal resources to identify a frequency bandwidth of the first reference signal.
5. 5. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: A frequency bandwidth including the first reference signal is identified based at least in part on an indication provided by a synchronization signal within the first synchronization signal block.
6. 6. The apparatus of claim 5, wherein the indication provided by the synchronization signal is based at least in part on a sequence of the synchronization signal, a scrambling code applied to the synchronization signal, or a combination thereof.
7. 7. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: Estimating the channel associated with the first synchronization signal block based at least in part on a first portion of the set of reference signal resources spanning a first frequency bandwidth associated with the first synchronization signal block; determining a second frequency bandwidth associated with the first set of control resources based at least in part on information from the first synchronization signal block, and The channel associated with the first set of control resources is estimated based at least in part on a second portion of the set of reference signal resources spanning the second frequency bandwidth.
8. 8. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: estimating a first channel associated with the first synchronization signal block based at least in part on the first reference signal being within a first frequency bandwidth of the set of reference signal resources, wherein the first frequency bandwidth corresponds to a frequency bandwidth of the first synchronization signal block, and A second channel associated with the first set of control resources is estimated based at least in part on a second reference signal in a second frequency bandwidth of the set of reference signal resources, wherein the second frequency bandwidth corresponds to a frequency bandwidth of the first set of control resources.
9. 9. An apparatus for wireless communication at an access network entity, comprising: A processor; A memory coupled to the processor, and Instructions stored in the memory and executable by the processor to cause the apparatus to: Multiplexing the first synchronization signal block and the first set of control resources in the frequency domain for the first beam into a first multiplexed block; transmitting the first synchronization signal block and the first set of control resources in the first multiplexed block, and At least a first reference signal is transmitted in a set of reference signal resources spanning the first synchronization signal block and the first set of control resources.
10. 10. The apparatus of claim 9, wherein the first reference signal spans frequency domain resources of the set of reference signal resources associated with each of the first synchronization signal block and the first set of control resources.
11. 11. The apparatus of claim 9, wherein the first reference signal spans a fixed frequency bandwidth of the set of reference signal resources.
12. 12. The apparatus of claim 11, wherein the fixed frequency bandwidth is selected from a set of two or more frequency bandwidth candidates available for transmitting the first reference signal.
13. 13. The apparatus of claim 9, wherein the instructions are further executable by the processor to cause the apparatus to: and transmitting an indication of a frequency bandwidth containing the first reference signal by using the synchronization signal in the first synchronization signal block.
14. 14. The apparatus of claim 13, wherein the indication provided by the synchronization signal is based at least in part on a sequence of the synchronization signal, a scrambling code applied to the synchronization signal, or a combination thereof.
15. 15. The apparatus of claim 9, wherein the instructions are further executable by the processor to cause the apparatus to: A second reference signal is transmitted in the set of reference signal resources, wherein the first reference signal is transmitted within a first frequency bandwidth of the set of reference signal resources, the first frequency bandwidth corresponding to a frequency bandwidth of the first synchronization signal block, and the second reference signal is transmitted within a second frequency bandwidth of the set of reference signal resources, the second frequency bandwidth corresponding to a frequency bandwidth of the first set of control resources.
16. 16. A method for wireless communication at a User Equipment (UE), comprising: Monitoring a first beam for a first multiplexing block comprising a first synchronization signal block multiplexed with a first set of control resources in the frequency domain; estimating a channel associated with the first synchronization signal block and the first set of control resources based at least in part on a first reference signal contained in a set of reference signal resources spanning the first synchronization signal block and the first set of control resources, and At least a portion of one or more of the first synchronization signal block or the first set of control resources is decoded based at least in part on the estimation.
17. 17. The method of claim 16, wherein the first reference signal spans frequency domain resources of the set of reference signal resources associated with each of the first synchronization signal block and the first set of control resources.
18. 18. The method of claim 16, wherein the first reference signal spans a fixed frequency bandwidth of the set of reference signal resources.
19. 19. The method of claim 16, further comprising: blind decoding two or more frequency bandwidth candidates within the set of reference signal resources to identify a frequency bandwidth of the first reference signal.
20. 20. The method of claim 16, further comprising: A frequency bandwidth including the first reference signal is identified based at least in part on an indication provided by a synchronization signal within the first synchronization signal block.

Description

Synchronization signal block and control resource set multiplexing in wireless communication The application is a divisional application of application number 202280013431.4, application name of 'synchronizing signal block and control resource set multiplexing in wireless communication' filed on 4/8/2023. Cross reference This patent application claims enjoyment of the benefit of U.S. patent application Ser. No. 17/175,444 entitled "SYNCHRONIZATION SIGNAL BLOCK AND CONTROL RESOURCE SET MULTIPLEXING IN WIRELESS COMMUNICATIONS," filed by SAKHNINI et al at 2021, 2, 12, which is assigned to the assignee of the present application. Technical Field The following relates to wireless communications, including multiplexing of synchronization signal blocks with a set of control resources in wireless communications. Background Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems are able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (e.g., long Term Evolution (LTE) systems, 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 techniques such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal FDMA (OFDMA), or discrete fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communication system may include one or more base stations or one or more network access nodes, each of which simultaneously support communication for multiple communication devices, which may be otherwise referred to as User Equipment (UE). In some wireless communication systems, a UE and a base station may support communication using multiple beams. In such systems, the beam selection technique may include the base station transmitting a plurality of Synchronization Signal Blocks (SSBs) on a plurality of different beams that may be monitored at the UE to select one or more beams that provide an appropriate channel quality for communication. For the selected beam, the UE may also monitor a control resource set (CORESET) (e.g., CORESET0, which may provide resources of a System Information Block (SIB)) that may provide an indication of the resources containing the system information. Techniques for enhancing the transmission and reception of SSB and CORESET communications may be desirable to improve overall system efficiency and reliability. Disclosure of Invention The described technology relates to improved methods, systems, devices, and apparatus supporting Synchronization Signal Block (SSB) and control resource set (CORESET) multiplexing in wireless communications. Various aspects of the present disclosure provide techniques for multiplexing SSBs and CORESET in the frequency domain to form a multiplexed block that can be transmitted using a set of symbols. The base station may transmit multiple multiplexed blocks using multiple different beams (e.g., in SSB bursts) and may provide a switching gap between each multiplexed block that allows the component to be switched between the different beams. In some cases, the switching gap is longer than a duration of a Cyclic Prefix (CP) associated with each symbol in the set of symbols for each multiplexing block. In some cases, within one or more of the multiplexing blocks, the associated SSB may use a different waveform than CORESET (e.g., SSB may use an Orthogonal Frequency Division Multiplexing (OFDM) waveform, while CORESET may use a discrete fourier transform spread OFDM (DFT-s-OFDM) waveform). In some cases, the multiplexing block may use a common reference signal for both SSBs and CORESET. In other cases, SSBs and CORESET may use separate reference signals. A method for wireless communication at a User Equipment (UE) is described. The method may include monitoring a first beam for a first multiplexing block comprising a first set of synchronization signals multiplexed with a first set of control resources in a frequency domain, the first multiplexing block comprising a first set of symbols each having an associated cyclic prefix, monitoring a second beam for a second multiplexing block comprising a second set of synchronization signals multiplexed with a second set of control resources in the frequency domain after a switching gap following the first multiplexing block, the second multiplexing block comprising a second set of symbols each having an associated cyclic prefix, wherein an initial cyclic prefix of an initial symbol of the second multiplexing block begins after the switching gap, and decoding one or more of the first multiplexing block or the second multiplexing block.