Apparatus and method for multi-hop relay communication in broadband wireless communication system
First Claim
1. An operating method of a Relay Station (RS) supporting a Layer-3 (L3) relay communication in a wireless communication system, the method comprising:
- establishing a first connection with a Base Station (BS) by performing a network entry procedure as a Mobile Station (MS);
establishing a second connection with a MS by performing a network entry procedure as a BS;
receiving at least one Media Access Control (MAC) Protocol Data Unit (PDU) including traffic from the MS through the second connection;
generating an L3 packet, which is fragmented into the at least one MAC PDU, from the at least one MAC PDU, wherein the L3 packet comprises an Internet Protocol (IP) packet;
generating at least one relay MAC PDU including the L3 packet generated from the at least one MAC PDU, without at least one header of the at least one MAC PDU; and
transmitting the at least one relay MAC PDU including the L3 packet using a RS Service Flow (SF) for a traffic, of a same Quality of Service (QoS) as QoS required by MS SFs carrying the L3 packet from the MS to the RS to the BS through the first connection.
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Abstract
An apparatus and operating method of a Relay Station (RS) and a Base Station (BS) controller for a multi-hop relay communication in a broadband wireless communication system is provided. The method of the RS includes, when receiving at least one traffic Media Access Control (MAC) Protocol Data Unit (PDU) from a Mobile Station (MS) accessing the RS, extracting a Layer-3(L3) packet from the at least one traffic MAC PDU, generating a relay MAC PDU including the L3 packet, and transmitting the MAC PDU to the BS through an RS Service Flow (SF) which supports Quality of Service (QoS) required by an MS SF carrying the L3 packet.
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Citations
21 Claims
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1. An operating method of a Relay Station (RS) supporting a Layer-3 (L3) relay communication in a wireless communication system, the method comprising:
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establishing a first connection with a Base Station (BS) by performing a network entry procedure as a Mobile Station (MS); establishing a second connection with a MS by performing a network entry procedure as a BS; receiving at least one Media Access Control (MAC) Protocol Data Unit (PDU) including traffic from the MS through the second connection; generating an L3 packet, which is fragmented into the at least one MAC PDU, from the at least one MAC PDU, wherein the L3 packet comprises an Internet Protocol (IP) packet; generating at least one relay MAC PDU including the L3 packet generated from the at least one MAC PDU, without at least one header of the at least one MAC PDU; and transmitting the at least one relay MAC PDU including the L3 packet using a RS Service Flow (SF) for a traffic, of a same Quality of Service (QoS) as QoS required by MS SFs carrying the L3 packet from the MS to the RS to the BS through the first connection. - View Dependent Claims (2, 3, 4)
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5. An operating method of a gateway supporting a Layer-3(L3) relay communication in a wireless communication system, the method comprising:
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establishing, at a Base Station (BS) controller, an L3 connection with a Relay Station (RS); receiving, from a BS, at least one Generic Routing Encapsulation (GRE) packet including traffic; determining that the at least one GRE packet is transmitted from the RS based on a header of the at least one GRE packet; determining that the at least one GRE packet includes the traffic, if an RS Service Flow (SF) carrying a payload of the at least one GRE packet is dedicated to traffic; extracting an L3 packet of at least one Mobile Station (MS) from the at least one GRE packet, wherein the L3 packet comprises an Internet Protocol (IP) packet; and transmitting the L3 packet to a destination of the L3 packet. - View Dependent Claims (6, 7, 8, 9)
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10. An apparatus of a Relay Station (RS) supporting a Layer-3(L3) relay communication in a wireless communication system, the apparatus comprising:
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a processor configured to; establish a first connection with a Base Station (BS) by performing a network entry procedure as a Mobile Station (MS), and establish a second connection with a MS by performing a network entry procedure as a BS; and a transceiver configured to receive at least one Media Access Control (MAC) Protocol Data Unit (PDU) including traffic from the MS through the second connection, wherein the processor is further configured to; generate an L3 packet comprising an Internet Protocol (IP) packet, which is fragmented into the at least one MAC PDU, from the at least one MAC PDU, and generate at least one relay MAC PDU including the L3 packet generated from the at least one MAC PDU, without at least one header of the at least one MAC PDU, and wherein the transceiver is further configured to transmit the at least one relay MAC PDU including the L3 packet using a RS Service Flow (SF) for a traffic, of a same Quality of Service (QoS) as QoS required by MS SFs carrying the L3 packet from the MS to the RS to the BS through the first connection. - View Dependent Claims (11, 12, 13)
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14. An apparatus of a gateway supporting a Layer-3 (L3) relay communication in a wireless communication system, the apparatus comprising:
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a processor configured to establish an L3 connection with a Relay Station (RS); and a communicator configured to receive, from a Base Station (BS), at least one Generic Routing Encapsulation (GRE) packet including traffic, wherein the processor is further configured to; determine that the at least one GRE packet is transmitted from the RS based on a header of the at least one GRE packet, determine that the at least one GRE packet includes the traffic, if an RS Service Flow (SF) carrying a payload of the at least one GRE packet is dedicated to traffic, and extract an L3 packet comprising an Internet Protocol (IP) packet of a Mobile Station (MS) from the at least one GRE packet, and wherein the communicator transmits the L3 packet to a destination of the L3 packet. - View Dependent Claims (15, 16, 17, 18)
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19. A communication system supporting a Layer-3 (L3) relay communication comprising:
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a Mobile Station (MS) configured to transmit at least one media Access Control (MAC) Protocol Data Unit (PDU) including traffic data or a signaling message to a Relay Station (RS); the RS configured to; receive the at least one MAC PDU from the MS, generate at least one relay MAC PDU by removing at least one MAC header from the at least one MAC PDU, extracting at least one L3 packet from the at least one MAC PDU, and adding at least one relay MAC header to the at least one L3 packet, and transmit the at least one relay MAC PDU using a RS Service Flow (SF) having a same Quality of Service (QoS) as QoS required by an MS SF carrying the at least one MAC PDU from the MS to the RS to a Base Station (BS); the BS configured to; receive the at least one relay MAC PDU from the RS, generate at least one capsulation packet including the at least one relay MAC PDU, and transmit the at least one capsulation packet to a gateway; and
the gateway configured to;receive the at least one capsulation packet from the BS, and extract the at least one L3 packet of the MS from the at least one relay MAC PDU included in the at least one capsulation packet, wherein the at least one relay MAC PDU is generated without at least one header of the at least one MAC PDU from the MS. - View Dependent Claims (20, 21)
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Specification