US-12628010-B2 - Adaptive self-interference mitigation resources for full-duplex communication

US12628010B2US 12628010 B2US12628010 B2US 12628010B2US-12628010-B2

Abstract

Methods, systems, and devices for wireless communications are described. The described techniques generally provide for a wireless device (e.g., a user equipment (UE), a network entity) to use a set of resources for mitigating self-interference when communications in a full-duplex mode. For example, a UE may request a set of resources for performing a self-interference mitigation procedure. The UE may receive a configuration of the requested set of resources and transmit one or more self-interference measurement signals via the set of resources (e.g., in the absence of transmissions by other devices). In some examples, a network entity may transmit an indication of periodic resources, semi-persistent resources, or both, for a self-interference mitigation procedure performed by the network entity. In response, one or more UEs may cancel uplink transmissions that overlap with the indicated resources, such that the self-interference mitigation procedure is performed in the absence of uplink signals.

Inventors

Min Soo SIM
Wooseok Nam
Tao Luo

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260512
Application Date: 20220811

Claims (20)

1 . A user equipment (UE) for wireless communications, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories and configured to execute the code to cause the UE to: transmit a first message indicating a request for a set of time-frequency resources for performing a self-interference mitigation procedure; receive, in response to the first message, a second message indicating a configuration of the set of time-frequency resources based at least in part on the request, the configuration indicating a type of resources included in the set of time-frequency resources and further indicating one or more time regions, a quantity of symbols, a periodicity, an offset value, or any combination thereof, wherein the type of resources comprises periodic resources, semi-persistent resources, dynamic resources, or any combination thereof; and transmit a self-interference measurement signal via the set of time-frequency resources in accordance with the type of resources and in accordance with the one or more time regions, the quantity of symbols, the periodicity, the offset value, or any combination thereof based at least in part on the configuration.
2 . The UE of claim 1 , wherein the type of resources comprises the semi-persistent resources, and the one or more processors are further configured to execute the code to cause the UE to: receive a first control message activating the set of time-frequency resources, wherein the self-interference measurement signal is transmitted based at least in part on the first control message activating the set of time-frequency resources.
3 . The UE of claim 2 , wherein the one or more processors are further configured to execute the code to cause the UE to: start a timer in response to receiving the first control message activating the set of time-frequency resources; and deactivate the set of time-frequency resources based at least in part on an expiration of the timer.
4 . The UE of claim 2 , wherein the one or more processors are further configured to execute the code to cause the UE to: receive a second control message deactivating the set of time-frequency resources.
5 . The UE of claim 1 , wherein the type of resources comprises the dynamic resources, and the one or more processors are further configured to execute the code to cause the UE to: transmit a request for the set of time-frequency resources based at least in part on a state of the UE being modified from a first state to a second state that is different from the first state; and receive, in response to the request, downlink control information comprising a resource grant for the set of time-frequency resources, wherein the self-interference measurement signal is transmitted in response to the resource grant.
6 . The UE of claim 1 , wherein, to transmit the self-interference measurement signal, the one or more processors are further configured to execute the code to cause the UE to: transmit the self-interference measurement signal based at least in part on one or more resource indices corresponding to respective time-frequency resources of the set of time-frequency resources, wherein the configuration indicates the one or more resource indices.
7 . The UE of claim 1 , wherein the one or more processors are further configured to execute the code to cause the UE to: determine one or more configurations of the set of time-frequency resources that are supported by the UE for performing the self-interference mitigation procedure, wherein the first message indicates the one or more configurations.
8 . The UE of claim 1 , wherein the one or more processors are further configured to execute the code to cause the UE to: perform the self-interference mitigation procedure using one or more component carriers associated with a frequency region, the frequency region comprising one or more uplink frequency regions of a bandwidth, one or more downlink frequency regions of the bandwidth, or both, wherein the configuration indicates the frequency region.
9 . The UE of claim 8 , wherein the self-interference measurement signal is transmitted via a first component carrier of the one or more component carriers, and the one or more processors are further configured to execute the code to cause the UE to: perform measurements of the self-interference measurement signal via a second component carrier of the one or more component carriers based at least in part on the configuration.
10 . The UE of claim 1 , wherein the one or more processors are further configured to execute the code to cause the UE to: identify a waveform and a transmit power for transmitting the self-interference measurement signal based at least in part on the configuration, wherein the self-interference measurement signal comprises the waveform and is transmitted using the transmit power.
11 . The UE of claim 1 , the one or more processors are further configured to execute the code to cause the UE to: select a waveform for the self-interference measurement signal based at least in part on the configuration excluding an indication of the waveform, wherein the self-interference measurement signal comprises the waveform.
12 . The UE of claim 1 , the one or more processors are further configured to execute the code to cause the UE to: receive a first control message activating the set of time-frequency resources in response to a first event trigger, wherein the self-interference measurement signal is transmitted based at least in part on the first event trigger.
13 . The UE of claim 1 , wherein the one or more processors are further configured to execute the code to cause the UE to: identify an uplink beam and a downlink beam associated with the set of time-frequency resources based at least in part on the configuration, the configuration indicating an uplink transmission configuration indicator state, an uplink spatial relation, a downlink transmission configuration indicator state, or any combination thereof, wherein the self-interference mitigation procedure is performed using the uplink beam and the downlink beam.
14 . A user equipment (UE) for wireless communications, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories and configured to execute the code to cause the UE to: receive, from a network entity, a message indicating a configuration of a set of time-frequency resources for a self-interference mitigation procedure, the set of time-frequency resources comprising periodic resources or semi-persistent resources, or both; and cancel one or more uplink transmissions based at least in part on the configuration, wherein time-frequency resources associated with the one or more uplink transmissions at least partially overlap with the set of time-frequency resources.
15 . The UE of claim 14 , wherein the set of time-frequency resources comprises the semi-persistent resources, and the one or more processors are further configured to execute the code to cause the UE to: receive a first control message activating the set of time-frequency resources, wherein the one or more uplink transmissions are canceled in response to receiving the first control message activating the set of time-frequency resources.
16 . The UE of claim 15 , wherein the one or more processors are further configured to execute the code to cause the UE to: start a timer in response to receiving the first control message activating the set of time-frequency resources; and transmit one or more additional uplink transmissions based at least in part on an expiration of the timer.
17 . The UE of claim 15 , wherein the one or more processors are further configured to execute the code to cause the UE to: receive a second control message deactivating the set of time-frequency resources; and transmit one or more additional uplink transmissions in response to receiving the second control message deactivating the set of time-frequency resources.
18 . The UE of claim 14 , wherein the one or more processors are further configured to execute the code to cause the UE to: determine that the set of time-frequency resources are activated based at least in part on one or more events, wherein the one or more uplink transmissions are canceled based at least in part on the set of time-frequency resources being activated, wherein the one or more events comprise a beam change at a user equipment (UE), an activation of one or more uplink beams, or both.
19 . The UE of claim 14 , wherein, to cancel the one or more uplink transmissions, the one or more processors are further configured to execute the code to cause the UE to: cancel the one or more uplink transmissions based at least in part on a priority associated with each of the one or more uplink transmissions, the one or more uplink transmissions comprising a physical uplink shared channel transmission, a repetition of a physical uplink shared channel transmission, a physical uplink control channel, or any combination thereof.
20 . The UE of claim 14 , wherein, to cancel the one or more uplink transmissions, the one or more processors are further configured to execute the code to cause the UE to: cancel the one or more uplink transmissions based at least in part on a transmission type of the one or more uplink transmissions, wherein the transmission type comprises a semi-persistently scheduled physical uplink shared channel transmission, a dynamically-granted physical uplink shared channel transmission, a periodic sounding reference signal transmission, a semi-persistent sounding reference signal transmission, or any combination thereof.

Description

FIELD OF TECHNOLOGY The following relates to wireless communications, including adaptive self-interference mitigation resources for full-duplex communication. BACKGROUND 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 FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE). In some wireless communications systems, a wireless device may operate according to a full-duplex mode. That is, the wireless device may receive signaling from one or more other wireless devices while simultaneously transmitting signaling to one or more other devices. In some cases, a communicating in a full-duplex mode may be affected by self-interference (e.g., interference from a transmission antenna to a reception antenna of a same device). SUMMARY The described techniques relate to improved methods, systems, devices, and apparatuses that support adaptive self-interference mitigation resources for full-duplex communication. For example, the described techniques enable a wireless device (e.g., a user equipment (UE), a network entity) to obtain resources that are dedicated to self-interference measurements, where one or more other devices may refrain from communicating (e.g., mute or cancel communications) for a duration while the wireless device performs the self-interference measurements using the dedicated resources. In one example, a UE may transmit a request for a set of resources for a self-interference mitigation procedure. In response, the UE may receive a configuration of the set of resources and may transmit one or more self-interference measurement signals via the configured set of resources. In such cases, the UE may perform the self-interference mitigation procedure in the absence of signals from one or more other devices. For example, upon receiving the request for the set of resources from the UE, a network entity may cancel one or more downlink transmissions, such as when the set of resources are activated for the self-interference mitigation procedure performed by the UE. In another example, a network entity may configure a set of resources (e.g., periodic resources, semi-persistent resources) used for a self-interference mitigation procedure performed by the network entity. The network entity may transmit an indication of the set of resources to one or more other wireless devices (e.g., one or more UEs), which may cancel communications by the one or more other devices for a duration corresponding to the set of resources. In one example, a UE may receive an indication of a set of periodic resources for the self-interference mitigation procedure to be performed by the network entity, and the UE may cancel one or more uplink transmissions on resources that overlap with the set of periodic resources. In any case, performing the self-interference mitigation procedure via the dedicated set of resources may enable a wireless device to accurately and efficiently determine one or more self-interference cancelation coefficients, thereby enabling improved self-interference mitigation and cancelation by the device. A method is described. The method may include transmitting a first message indicating a request for a set of time frequency resources for performing a self-interference mitigation procedure, receiving, in response to the first message, a second message indicating a configuration of the set of time-frequency resources based on the request, and transmitting a self-interference measurement (SIM) signal via the set of time-frequency resources based on the configuration. An apparatus is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to transmit a first message indicating a request for a set of time frequency resources for performing a self-interference mitigation procedure, receive, in response to the first message, a second message indicating a configuration of the set of time-frequency resources based on the request, and transmit