Base station, user equipment for integrating multiple rats using carrier aggregation and methods thereof
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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Abstract
A base station, for integrating multiple Radio Access Technologies (RATs) using Carrier Aggregation (CA) inlcudes a WAN MAC entity, an adapter and a WLAN entity. The adapter is connected to one of a plurality of HARQ buffers and receives DL WAN MPDUs stored in the HARQ buffer, and converts the DL WAN MPDUs into a pluarlity of DL WLAN MPDUs. The WLAN MAC entity is coupled to the adapter, receives the DL WLAN MPDUs, wherein the WAN MAC entity respectively transmit the DL WAN MPDUs through transport channels, and the WLAN MAC entity transmits the DL WLAN MPDUs to be time-aligned with the DL WAN MPDUs.
16 Citations
33 Claims
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1. A base station, for integrating multiple Radio Access Technologies (RATs) using Carrier Aggregation (CA), comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of integrating multiple Radio Access Technologies (RATs) using Carrier Aggregation, for a base station to transmit data in a downlink path, comprising:
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assigning, by a WAN processing circuit of the base station, a plurality of Downlink (DL) WAN MAC Protocol Data Units (MPDUs) to a plurality of transport channels, wherein the WAN processing circuit is related to a cellular network; converting, by an adapter of the base station, the DL WAN MPDUs corresponding to one of the transport channels into a plurality of DL WLAN MPDUs according to a mapping table, and appending, by the adapter, 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, the DL WAN MPDUs are cellular based MAC frame, and the mapping table comprises 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; and transmitting, by the WAN processing circuit, the DL WAN MPDUs through the transport channels, and transmitting, by a WLAN processing circuit of the base station, the DL WLAN MPDUs to be time-aligned with the DL WAN MPDUs, wherein the WLAN processing circuit is related to the WLAN. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of integrating multiple RATs using CA, for a base station to transmit data in an uplink path, comprising:
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receiving, by a WLAN processing circuit of the base station which is related to a WLAN, a UL WLAN MPDU, wherein the UL WLAN MPDUs are 802.11 MAC frames; converting, by an adapter of the base station, the UL WLAN MPDU into a UL WAN MPDU according to a mapping table, wherein the UL WAN MPDUs are cellular based MAC frames, and the mapping table comprises 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; at time point T tx, transmitting, by a WAN processing circuit of the base station, a first UL grant message through a PDCCH from a primary Component Carrier (CC), and determining, by the WAN processing circuit, whether the UL WAN MPDU in response to the first UL grant message is received before time point T′
tx, wherein the T′
tx=Ttx+Δ
, and Δ
is a positive value bigger than 1 msec, wherein the WAN processing circuit is related to the cellular network; andif the UL WAN MPDU is received through a WLAN processing circuit of the base station before time point T′
tx, transmitting, by the WAN processing circuit, a second UL grant message. - View Dependent Claims (18, 19)
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20. A user equipment, for integrating multiple RATs using CA, comprising:
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a WAN processing circuit, receives a UL grant message corresponding to a first UL WAN MPDU on PDCCH, wherein the WAN processing circuit is related to a cellular network; an adapter, coupled to the WAN processing circuit; and a WLAN processing circuit which is related to a WLAN, coupled to the adapter, wherein when the WAN processing circuit determines that the UL grant message comprising resource information corresponding to the WLAN, the WAN processing circuit transmits the first UL WAN MPDU to the adapter; the adapter converts the first UL WAN MPDU into a first UL WLAN MPDU according to a mapping table and transmits the first UL WLAN MPDU to the WLAN processing circuit, wherein the first UL WLAN MPDUs are 802.11 MAC frames, the first UL WAN MPDUs are cellular based MAC frames, and the mapping table comprises a WLAN MAC address and a Cell Radio Network Temporary Identifier (C-RNTI) of the user Equipment in a radio coverage of a base station; and the WLAN processing circuit transmits the first UL WLAN MPDU. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A method of integrating multiple RATs using CA, for a user equipment (UE), comprising:
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receiving, by a WAN processing circuit of the UE, a UL grant message corresponding to a first UL WAN MPDU on PDCCH, wherein the WAN processing circuit is related to a cellular network; determining, by the WAN processing circuit, whether the UL grant message comprising resource information corresponding to a WLAN; and when the UL grant message comprising resource information corresponding to the WLAN is determined, transmitting, by the WAN processing circuit, the first UL WAN MPDU to an adapter of the UE, converting, by the adapter, the first UL WAN MPDU into a first UL WLAN MPDU according to a mapping table, and transmitting, by a WLAN processing circuit of the UE which is related to the WLAN, the first UL WLAN MPDU, wherein the first UL WLAN MPDUs are 802.11 MAC frames, the first UL WAN MPDUs are cellular based MAC frames, and the mapping table comprises a WLAN MAC address and a Cell Radio Network Temporary Identifier (C-RNTI) of the user Equipment in a radio coverage of a base station. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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Specification