Patent No. US11910404 (titled "Physical Uplink Shared Channel Processing Period") was filed by Peninsula Technologies Llc on Jan 30, 2023.
’404 is related to the field of wireless communication, specifically addressing the scheduling of uplink transmissions in cellular networks. In modern cellular systems like LTE and 5G, efficient scheduling is crucial for maximizing throughput and minimizing latency. A key challenge is ensuring that the user equipment (UE) has sufficient time to process the downlink control information (DCI) that grants it uplink resources before it needs to transmit on the physical uplink shared channel (PUSCH) .
The underlying idea behind ’404 is to optimize uplink scheduling by taking into account the UE's processing capabilities. The base station learns the minimum time a UE needs to process a DCI message and prepare for a PUSCH transmission. This PUSCH processing period is signaled by the UE to the base station. The base station then ensures that it schedules uplink transmissions such that the UE always has at least this minimum processing time.
The claims of ’404 focus on a base station receiving a capability message from a wireless device. This message includes a parameter specifying the minimum time the UE needs to process a DCI assigning uplink resources and prepare for the corresponding PUSCH transmission. The base station then transmits a DCI assigning uplink resources, ensuring that the transmission occurs after a time period that is equal to or greater than the UE's reported minimum PUSCH processing period . Finally, the base station receives the transport block transmitted by the UE.
In practice, the base station uses the UE's reported processing time to avoid scheduling uplink transmissions too aggressively. Without this information, the base station might schedule transmissions that the UE is unable to prepare for in time, leading to dropped packets and reduced throughput. By respecting the UE's processing limitations, the base station ensures that the UE has sufficient time to perform necessary operations like decoding the DCI, configuring its transmitter, and preparing the data for transmission.
This approach differs from prior solutions that may have relied on fixed timing assumptions or generic estimates of UE processing capabilities. By allowing the UE to explicitly signal its processing time, the system can adapt to the specific capabilities of each device. This is particularly important in heterogeneous networks where different UEs may have vastly different processing power. By tailoring the scheduling to each UE's capabilities, the system can achieve more efficient resource utilization and improve overall network performance.
In the mid-2010s when ’404 was filed, wireless communication systems commonly relied on orthogonal frequency division multiplexing (OFDM) and similar multicarrier modulation techniques. At a time when carrier aggregation (CA) was typically implemented using multiple component carriers (CCs), systems commonly relied on techniques for managing timing advance (TA) and hybrid automatic repeat request (HARQ) processes to ensure reliable data transmission.
The claims were rejected in a non-final office action. The rejection was based on nonstatutory double patenting over another U.S. patent. The examiner stated that the claims were not patentably distinct. The prosecution record does NOT describe the technical reasoning or specific claim changes that led to allowance.
This patent contains 20 claims, of which claims 1, 11, and 20 are independent. The independent claims are directed to a method, a base station, and a non-transitory computer-readable medium, respectively, all generally relating to managing physical uplink shared channel (PUSCH) processing periods between a base station and a wireless device. The dependent claims generally elaborate on and refine the elements and features of the independent claims.
Definitions of key terms used in the patent claims.
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