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Improving Efficiency of Citizens Broadband Radio Service Dual Connectivity and Citizens Broadband Radio Service / Wireless Local Area Network Radio Level Integration and Interworking
| Content Provider | Semantic Scholar |
|---|---|
| Author | Taneja, Mukesh Gandhi, Indermeet |
| Copyright Year | 2019 |
| Abstract | Techniques are described herein for using Citizens Broadband Radio Service Dual Connectivity (CBRS-DC) to improve per-user throughput and mobility robustness. With CBRS-DC, a CBRS User Equipment (UE) can exchange data via a Master CBRS Device (CBSD) and a Secondary CBSD simultaneously, but control plane packets for both these CBSDs are sent only via the Master CBSD. In CBRS networks, the Spectrum Access System (SAS) may change the channel bandwidth allocated to a CBSD. The SAS could even remove all the resources allocated to a Master CBSD, which can create problems with DC operation in CBRS networks, particularly for denser deployments. There are similar problems associated with using Long Term Evolution (LTE) – Wireless Local Area Network (WLAN) Aggregation (LWA), LTE and Wi-Fi® radio level integration with IP security tunnel (LWIP), and Radio Access Network (RAN) Controlled LTE-WLAN Interworking (RCLWI) with CBRS and Wi-Fi integration at the radio network level. Moreover, current mechanisms do not operate efficiently with CBRS or some of the newer wireless technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11ax, Extreme High Throughput (EHT), etc. Described herein are solutions to improve the efficiency of these operations. DETAILED DESCRIPTION Long Term Evolution (LTE) Dual Connectivity (DC) is desirable for reasons including improving per-user throughput and mobility robustness. In this architecture, a User Equipment (UE) is connected to a Master Cell Group (MCG) as well as a Secondary Cell Group (SCG) simultaneously via a Master eNodeB (MeNB) and a Secondary eNodeB (SeNB), respectively. The control plane is established via the MCG and there is no Radio Resource Control (RRC) termination at the secondary node (e.g., no split Signaling Radio Bearer (SRB) or SCG SRB). The SCG is configured based on the RRC messages that are 2 Taneja and Gandhi: IMPROVING EFFICIENCY OF CITIZENS BROADBAND RADIO SERVICE DUAL CON Published by Technical Disclosure Commons, 2019 2 5854 sent via the MeNB SeNB (X2) interface. Data is communicated via the MCG and the SCG. The split bearer case requires additional Radio Resource Management (RRM) algorithms, flow control, and Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU) scheduling at the eNB. Figure 1 below illustrates a system configured for LTE DC. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.tdcommons.org/cgi/viewcontent.cgi?article=3541&context=dpubs_series |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
