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Wireless communication network handovers of wireless user equipment that execute low-latency applications

專利號
US11991563B2
公開日期
2024-05-21
申請人
T-MOBILE INNOVATIONS LLC(US KS Overland Park)
發(fā)明人
Zheng Cai
IPC分類
H04W36/00; H04W4/024; H04W4/20; H04W40/36
技術領域
ue,latency,upf,asf,5gnr,rrcf,handover,cu,target,low
地域: KS KS Overland Park

摘要

A wireless communication device executes a low-latency application in a source wireless communication network based on application context that comprises an application user identifier, an application session identifier, and an application session pointer. A target wireless communication network detects a hand-in of the wireless communication device, and in response, obtains the application context for the wireless communication device from the source wireless communication network. The target wireless communication network wirelessly exchanges low-latency data with the wireless communication device for the low-latency application based on the application context that comprises the application user identifier, the application session identifier, and the application session pointer.

說明書

RRCF 513 processes the uplink 5GNR signaling, downlink 5GC N2 signaling, and X2 signaling to generate new downlink 5GNR signaling, new uplink 5GC N2 signaling, and new X2 signaling. RRCF 513 transfers the new uplink 5GC N2 signaling to core 420 and the X2 signaling to other CUs. SDAPF 512 transfers corresponding N3 data to UPF 431. UPF 431 transfers the N3 data to ASF 433. ASF 433 processes the uplink data per UE low-latency application context like the user ID, session ID, session pointers, and so on. For example, ASF 433 may annotate and distribute live video-conferencing data for a multi-user augmented reality application. UPF 431 transfers the downlink data to SDAPF 512—including low-latency application data. SDAPF 512 receives X2 data from other CUs. The 5GNR network functions (RRCF 513, SDAPF 512, PDCPF 511) process the new downlink 5GC signaling and data to generate corresponding downlink data units. PDCPF 511 in CU 415 transfers the downlink data units to the RLC in DU 413. The 5GNR network applications (RLC, MAC, PHY) process the downlink data units to generate corresponding 5GNR symbols. DU 413 transfers the downlink 5GNR symbols to RU 411. In RU 411, the DSP processes the downlink 5GNR symbols to generate corresponding digital signals for the analog-to-digital interfaces. The analog-to-digital interfaces convert the digital signals into analog signals for modulation. Modulation up-converts the analog signals to their carrier frequency. The amplifiers boost the modulated signals for the filters which attenuate unwanted out-of-band energy. The filters transfer the filtered electrical signals through duplexers to the antennas. The filtered electrical signals drive the antennas to emit corresponding wireless signals to 5GNR UE 401 that transport the downlink 5GNR signaling and data.

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