Qualcomm Incorporated

Abdelrahman Mohamed Ahmed Mohamed Ibrahim

Muhammad Sayed Khairy Abdelghaffar

Ahmed Attia Abotabl

Krishna Kiran Mukkavilli

Huilin Xu

Seyedkianoush Hosseini

Wanshi Chen

Tingfang Ji

Hwan Joon Kwon

Ahmed Elshafie

Wei Jennifer Yang

Renqiu Wang

Joseph Patrick Burke

Hung Dinh Ly

Gokul Sridharan

Yi Huang

Igor Gutman

Pushkar Bajirao Kulkarni

Thomas Valerrian Pasca Santhappan

Tao Luo

Peter S Gaal

Juergen Cezanne

Qian Zhang

Naga Bhushan

Pinar Sen

Junyi Li

Jing X Sun

Yan Zhou

Mostafa Khoshnevisan

Linhai He

Yuchul Kim

Shimman Arvind Patel

Seyong Park

Marwen Zorgui

Juan Montojo

Alexandros Manolakos

Yu Zhang

Danlu Zhang

Yeliz Tokgoz

Chih-Ping Li

Runxin Wang

Sanghoon Kim

Cong Nguyen

Charline Hao

Ronnie Machado

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling that indicates a configuration for subband full duplex (SBFD) slots and a random access channel (RACH) configuration for SBFD slots. The UE may transmit at least one instance of a RACH message in an uplink subband of an SBFD slot in accordance with the RACH configuration. The RACH configuration may enable a UE to repeat a RACH message or transmit a multi-slot RACH message across an SBFD slot and an uplink slot. The RACH configuration may map synchronization signal blocks (SSB)s to RACH occasions in the uplink subband of the SBFD slot. In some examples, the SSBs may be mapped across multiple (e.g., consecutive) SBFD slots. In some cases, the RACH configuration may enable a UE to repeat a RACH message or transmit a multi-slot RACH message across multiple SBFD slots.

Physical random access channel for uplink-subband in subband full duplex

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may transmit a channel estimation granularity indication that specifies a channel estimation granularity associated with generating channel state information (CSI) that is based at least in part on a full-duplex configuration. The network node may receive the CSI associated with the channel estimation granularity indication. Numerous other aspects are described.

Channel state information reference signal estimation granularity configuration in full-duplex

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a message indicating a configuration for measurement of cross-link interference associated with the UE. The configuration may indicate one or more TCI states for the UE to use for performing one or more cross-link interference measurements. The UE may perform the one or more cross-link interference measurements in accordance with the configuration. The UE may perform the one or more cross-link interference measurements over a set of cross-link interference resources using the one or more TCI states. The UE may transmit a cross-link interference report indicating one or more cross-link interference metrics corresponding to the one or more cross-link interference measurements.

Cross-link interference measurement and reporting in a multiple transmission and reception point system

Techniques and apparatus for configuring a reference signal for measuring cross-link interference in wireless communication systems. A method that may be performed by a user equipment (UE) includes receiving signaling indicating a configuration for a reference signal for measuring cross-link interference and indicating a type of the reference signal as zero-power or non-zero-power; and taking one or more actions in response to the type of the reference signal.

Reference signal configuration for measuring cross-link interference in a full duplex environment

Methods, systems, and devices for wireless communications are described. Communication devices may perform secret key generation using a set of line-of-sight (LOS) communication modes to secure a physical channel. For example, a first device and a second device may communicate a set of reference signals over the physical channel using a set of LOS communication modes. The first device and the second device may generate a secret key based on the set of LOS communication modes, for example, by using information associated with the set of LOS communication modes to compute the secret key using a key derivation function that outputs the secret key. The first device and the second device may secure the physical channel by encrypting signaling between the first device and the second device with the secret key and communicating the signaling over the physical channel using LOS communications.

Secret key extraction for line-of-sight communications

Certain aspects of the present disclosure provide a method for wireless communications by a user equipment (UE) generally including transmitting, to a network entity, capability information indicating a capability of the UE for uplink subband filtering, receiving signaling scheduling an uplink transmission from the UE in a subband full duplex (SBFD) slot on resources determined based on the indicated capability, and transmitting the uplink transmission in the SBFD slot with uplink subband filtering, in accordance with the scheduling.

Enhanced uplink emission capability for subband full duplex

Methods, systems, and devices for wireless communications are described. In one aspect, a UE may report channel state feedback (CSF) to a network entity based on channel state information (CSI) measurements and CLI measurements. In another aspect, a UE may explicitly report CLI measurements to a network entity. In yet another aspect, a UE may report a signal-to-interference-plus-noise ratio (SINR) to a network entity based on CLI measurements, and the network entity may trigger the UE to perform further CLI measurements on signals received from other UEs based on the SINR. In yet another aspect, a UE may generate a report using CLI measurements based on whether the UE is allocated enough time to generate and transmit the report. In yet another aspect, a UE may identify a suitable priority for reporting CLI to a network entity.

Cross-link interference reporting configuration and payload design

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control information indicative of a set of time division duplexing (TDD) patterns. A first dedicated TDD pattern of the set of TDD patterns may be dedicated for TDD communications between the UE and a first transmission and reception point (TRP) from a set of multiple TRPs associated with a network entity. The UE may determine at least a second dedicated TDD pattern for TDD communications between the UE and at least a second TRP from the set of multiple TRPs based on the set of TDD patterns. The UE may communicate with the network entity via at least one of the first TRP or the second TRP in accordance with the first dedicated TDD pattern, the second dedicated TDD pattern, or both.

Techniques for implementing full-duplex communications via multiple transmission and reception points

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive transmission configuration indication (TCI) state restriction information indicating that a TCI state associated with sub-band full-duplex (SBFD) communications is restricted for downlink communications. The UE may communicate in accordance with the TCI state restriction information. Numerous other aspects are described.

Transmission configuration indication state restriction for sub-band full-duplex communications

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may receive a sounding reference signal (SRS) from a first user equipment (UE). The base station may receive a cross-link interference (CLI) report from a second UE based at least in part on the SRS. The base station may determine a CLI from an uplink shared channel based at least in part on a power headroom report for the uplink shared channel received from the first UE and the CLI report received from the second UE. Numerous other aspects are provided.

Cross-link interference determination for an uplink shared channel

Aspects of the present disclosure provide techniques for sub-band conversion or cancellation for dynamic scheduling of sub-band full duplex (SBFD) operations between the base station and UEs. The capability to communicate via simultaneous UL and DL transmissions through dynamic scheduling allows for increased uplink duty cycle leading to latency reduction (e.g., it is possible to receive DL signal in an UL only slots, which can enable latency savings) and improved uplink coverage. Additionally enabling flexible and dynamic UL and DL resource adaptation in accordance with techniques of the present disclosure also provide enhanced system capacity, resource utilization, and spectrum efficiency.

Methods and apparatus for dynamic scheduling of sub-band full duplex communications

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of conflict conditions for identification of conflicts between uplink feedback messages and a communication frame structure, and may receive a downlink message within a set of semi-persistent downlink resources. The downlink message may be associated with a first uplink resource for transmitting a feedback for the downlink message, where the first uplink resource is included within a subband full-duplex (SBFD) slot that includes one or more uplink subbands. The UE may then transmit the feedback message via the first uplink resource or a second uplink resource that is deferred relative to the first uplink resource based on whether feedback deferral for the downlink message is triggered in accordance with the one or more conflict conditions the second uplink resource is included within a second slot that is subsequent to the subband full-duplex slot.

Techniques for hybrid automatic repeat request deferral in full-duplex

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a grant scheduling communications during a full-duplex slot, the communications including a first communications using a first one or more resource block sets and a second communications using a second one or more resource block sets. The UE may identify, based at least in part on a time domain resource allocation field indicated in the grant, a first frequency resource for the first one or more resource block sets and a second frequency resource for the second one or more resource block sets. The UE may perform the communications during the full-duplex slot and using the first frequency resource and the second frequency resource.

Time domain resource allocation scheduling multiple transmissions across subbands

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, an indication of at least one of a configured grant or a semi-persistent scheduling (SPS) configuration. The UE may transmit or receive, based at least in part on a modification to the at least one of the configured grant or the SPS configuration, wherein the modification is based at least in part on a change from a first time domain pattern to a second time domain pattern. The UE may receive and indication of the modification from the base station. Additionally, or alternatively, the UE may determine the medication based at least in part on at least one rule stored in a memory of the UE. Numerous other aspects are described.

Modifications to configured grants and semi-persistent scheduling configurations based on time domain patterns

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a message indicating one or more communication patterns from a base station. The one or more communication patterns may indicate to the UE to adjust one or more parameters for transmitting an uplink communication during a set of time resources, a set of beams, a set of ports, or any combination thereof. During the resources indicated in the one or more communication patterns, the base station may estimate a cross link interference channel between the base station and a second base station. The one or more communication patterns may indicate a hopping pattern for each subband of a bandwidth part. The base station may configure the UE with a timing advance based on the message.

Signaling for inter-base station interference estimation

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San Diego, CA, United States of America

Abdelrahman Mohamed Ahmed Mohamed Ibrahim