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Base station, user equipment for integrating multiple rats using carrier aggregation and methods thereof

  • US 10,374,776 B2
  • Filed: 10/20/2015
  • Issued: 08/06/2019
  • Est. Priority Date: 11/20/2014
  • Status: Active Grant
First Claim
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1. A base station, for integrating multiple Radio Access Technologies (RATs) using Carrier Aggregation (CA), comprising:

  • a Wide Area Network (WAN) processing circuit which is related to a cellular network, and the WAN processing circuit comprises;

    a scheduler, assigns a plurality of Downlink (DL) WAN Media Access Control (MAC) Protocol Data Units (MPDUs) to a plurality of transport channels;

    a plurality of Hybrid Automatic Repeat request (HARQ) buffers, connected to the scheduler and each of the HARQ buffers respectively connects to one of the transport channels, wherein each of the HARQ buffers stores part of the DL WAN MPDUs; and

    a multiplexer, coupled to the scheduler, connected between the scheduler and the HARQ buffers, the multiplexer distributes the DL WAN MPDUs to the HARQ buffers according to the assignation from the scheduler;

    a first adapter, connected to a first HARQ buffer of the HARQ buffers, receives the DL WAN MPDUs stored in the first HARQ buffer, comprises a plurality of HARQ process IDs corresponding to a plurality of process queues in the HARQ buffer connected to the first adapter and a mapping table comprising a WLAN MAC address and a Cell Radio Network Temporary Identifier (C-RNTI) of each of a plurality of User Equipments (UEs) in a radio coverage of the base station, converts the DL WAN MPDUs into a plurality of DL Wireless Local Area Network (WLAN) MPDUs according to the mapping table, and appends one of the HARQ process IDs in a header of each of DL WLAN MPDUs correspondingly, wherein the DL WLAN MPDUs are 802.11 MAC frames, and the DL WAN MPDUs are cellular based MAC frame; and

    a first WLAN processing circuit which is related to the WLAN, coupled to the first adapter, receives the DL WLAN MPDUs,wherein the WAN processing circuit respectively transmits the DL WAN MPDUs through the transport channels, and the first WLAN processing circuit transmits the DL WLAN MPDUs to be time-aligned with the DL WAN MPDUs.

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