Routing Solutions for LTE-WLAN Aggregation

A technology for data aggregation and user devices, applied in nan, electrical components, transmission systems, etc., can solve problems such as identifying LTE PDUs

Inactive Publication Date: 2017-08-29
HFI INNOVATION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there remains the question of how to implement LWA efficiently
The first question is how to deal with U-plane (LTE packet data unit (PDU)) bearers splitting for LWA
The second question is how to identify LTE PDU by WLAN AP module or WLAN WiFi module and how to operate correctly

Method used

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  • Routing Solutions for LTE-WLAN Aggregation
  • Routing Solutions for LTE-WLAN Aggregation
  • Routing Solutions for LTE-WLAN Aggregation

Examples

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Embodiment Construction

[0020] Reference is made to some embodiments of the invention, examples of which are shown in the accompanying drawings.

[0021] LWA is highly integrated at the radio level, which allows real-time channel and load conscious management of radio resources across WLAN and LTE to provide significant capacity and QoE improvements. When LWA is enabled, S1-U terminates at the eNB, with all IP packets routed to the eNB and performing Packet Data Convergence Protocol (PDCP) aspects (ie, ROHC, encryption) as PDCP PDUs. Then, eNB can schedule LTE PDCP PDU should go to LWA-LTE link or LWA-Wi-Fi link. In this invention, we discuss how LTE PDCP PDUs are routed on eNB-AP and AP-Wi-Fi modules. Therefore, an adaptation layer with (de-)encapsulation mechanism at the eNB and Wi-Fi module is introduced to provide this innovation without significantly changing the WLAN AP behavior. LWA borrows the existing dual connectivity (dual connectivity) concept to make the WLAN network transparent to the...

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Abstract

Apparatus and methods are provided for user-plane LWA PDU routing. In one novel aspect, LTE PDU packets are routed through a WLAN AP to a UE by encapsulation of the data packets. In one embodiment, a bridge/VLAN architecture is used. The UE identifies one or more Ethernet Frames received the WLAN interface as containing the PDCP PDUs by decoding the EtherType. In another embodiment, the WLAN terminated tunneling is used by decoding the EtherType of indicating the PDCP type. In another novel aspect, an UE-terminated tunneling is created. In one embodiment, the IP tunneling is used. In another embodiment, the GRE tunneling is used. The GRE header contains a KEY field to identify the packets as being the LWA packets. In yet another embodiment, the IPSec tunneling is used. The SPI of the header is used to identify the packets as being the LWA data packets.

Description

[0001] Cross application of related applications [0002] The scope of claims in this application claims priority to the following application: US Provisional Application Serial No. 62 / 162,304, filed May 15, 2015, entitled "Method and apparatus of User Plane Architecture for LWA." technical field [0003] The present invention relates to wireless communication, and more particularly, the present invention relates to routing of Long Term Evolution-WLAN aggregation (LWA) packet data units. Background technique [0004] Mobile data usage has grown at an exponential rate in recent years. Long-Term Evolution (LTE) systems provide high peak data rates, low latency, improved system capacity, and low operating costs due to simplified network architecture. In the LTE system, an evolved universal terrestrial radio access network (evolved universal terrestrial radio access network, E-UTRAN) includes a plurality of base stations, such as an evolved Node B (evolved Node-B, eNB). Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/06H04L45/74
CPCH04L69/03H04W4/00H04W88/06H04L69/18H04L69/324H04L69/22H04L47/825H04L45/74
Inventor 帕范·山萨纳·克里斯那·努杰哈利周建铭徐家俊
Owner HFI INNOVATION INC
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