Abstract
Splitting data in a wireless communications network. Data may be split to use multiple base stations for transmission to user equipment in order to improve the bandwith if a UE is on a cell edge, or may be split by user equipment for transmission to multiple base stations in order to improve handover. Data splitting may be performed at the Packet Data Convergence Protocol layer, at the Radio Link Control layer, or at the Media Access Control layer on user equipment or on a base station. Data may instead be split in a network node, such as in a serving gateway, in order to reduce X2 interface load or delay carrier aggregation.
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| 5G | 07/11/2019 | ISLD-201910-015 | INTERDIGITAL INC |
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Technologies
Mobility and handover Protocol Stack
Product
Base Station (eNB/gNB)User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Transmitting/receiving of data channel
Claim
1. A wireless transmit and receive unit (WTRU) comprising:
a processor; and
a memory comprising instructions that when executed by the processor cause the WTRU to:
establish a first radio bearer, wherein data that is transmitted to the WTRU via the first radio bearer is divided by a Packet Data Convergence Protocol (PDCP) entity of a first evolved Node-B (eNB) into a first portion and a second portion, the first portion being delivered to the WTRU via the first eNB and the second portion being delivered to the WTRU via a second eNB;
receive, via a first cell that is associated with the first eNB, at least a first PDCP packet data unit (PDU) associated with the first portion of the data that is transmitted to the WTRU via the first radio bearer;
receive, via a second cell that is associated with the second eNB, at least a second PDCP PDU associated with the second portion of the data that is transmitted to the WTRU via the first radio bearer; and
reorder at least the first and second PDCP PDUs at a PDCP layer of the WTRU.
2. The WTRU of claim 1, wherein the instructions, when executed by the processor, further cause the WTRU to buffer at least one of the first PDCP PDU or the second PDCP PDU.
3. The WTRU of claim 1, wherein the second portion is transmitted by the first eNB to the second eNB via an X2 interface.
4. The WTRU of claim 1, wherein the data that is transmitted to the WTRU via the first radio bearer comprises Internet Protocol (IP) packets.
5. A method comprising:
by a wireless transmit and receive unit (WTRU),
establishing a first radio bearer, wherein data that is transmitted to the WTRU via the first radio bearer is divided by a Packet Data Convergence Protocol (PDCP) entity of a first evolved Node-B (eNB) into a first portion and a second portion, the first portion being delivered to the WTRU via the first eNB and the second portion being delivered to the WTRU via a second eNB;
receiving, via a first cell that is associated with the first eNB, at least a first PDCP packet data unit (PDU) associated with the first portion of the data that is transmitted to the WTRU via the first radio bearer;
receiving, via a second cell that is associated with the second eNB, at least a second PDCP PDU associated with the second portion of the data that is transmitted to the WTRU via the first radio bearer; and
reordering at least the first and second PDCP PDUs at a PDCP layer of the WTRU.
6. The method of claim 5, further comprising buffering at least one of the first PDCP PDU or the second PDCP PDU.
7. The method of claim 5, wherein the second portion is transmitted by the first eNB to the second eNB via an X2 interface.
8. The method of claim 5, wherein the data that is transmitted to the WTRU via the first radio bearer comprises Internet Protocol (IP) packets.
Associated Portfolios
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SUMMARY
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.