SRS enhancements for radar coexistence
AssigneeInterDigital Patent Holdings, Inc.
InventorsJoe Huang, Sudhir Pattar, Philip Pietraski, Tariq Elkourdi, Jane Mack, Phillip Leithead, Daniel Steinbach
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Abstract
Examples for ensuring robust SRS transmission and reception can occur when coexisting with interference include moving WTRU SRS transmissions out of the interference band to mitigate interference to and from the interferer, increasing the number of OFDM symbols and/or the repetition factor for SRS to overcome the interference, dynamic switching/suspending of semi-persistent SRS and/or aperiodic SRS to mitigate interference to and from the interferer, and power boosting of SRS transmissions to overcome the interference.
Claims19
A method performed in a network node for providing semi-persistent (SP) sounding reference signals (SRS) resource modification, the method comprising:
- determining a set of characteristics of an interferer;
- determining a set of wireless transmit and receive units (WTRUs) that incur interference from the interferer on a sounding reference signal (SRS) transmission bandwidth, the determination based on the determined set of characteristics of the interferer;
- and
- transmitting an SRS suspension bitmap and frequency hopping resource suspension range in a semi-persistent signaling.
A method performed in a wireless transmit and receive unit (WTRU) for providing semi-persistent (SP) sounding reference signals (SRS) resource modification responsive to at least one interferer, the method comprising:
- receiving an activation/deactivation command of a configured semi-persistent sounding reference signal (SRS) resource set, the activation/deactivation command including a resource suspension bitmap and a frequency hopping resource suspension range;
- transmitting the SRS resources based on the resource suspension bitmap;
- suspending a transmission of non-frequency hopped SRS resources indicated as suspend in the resource suspension bitmap;
- and
- suspending a transmission of frequency-hopped SRS resources with suspension bits set to be suspended during the hop when at least a portion of an SRS resource bandwidth falls in the frequency hopping resource suspension range.
Dependencies are inferred from the claim text.