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Method and apparatus for performing channel aggregation and medium access control retransmission

A channel aggregation and channel technology, which is applied in the sub-channel allocation of transmission paths, allocation between users/terminals, transmission systems, etc., and can solve problems such as increasing system throughput.

Inactive Publication Date: 2013-11-27
INTERDIGITAL PATENT HLDG INC
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  • Abstract
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Problems solved by technology

In addition, the capability of carrier aggregation at the Media Access Control (MAC) layer on multiple channels allows more data to be transmitted, thereby increasing system throughput

Method used

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  • Method and apparatus for performing channel aggregation and medium access control retransmission
  • Method and apparatus for performing channel aggregation and medium access control retransmission
  • Method and apparatus for performing channel aggregation and medium access control retransmission

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Embodiment

[0334] 1. A method for a node to perform channel aggregation to communicate over non-contiguous spectrum using a plurality of aggregated channels comprising a primary channel and at least one non-primary channel, the method comprising:

[0335] performing carrier sense multiple access (CSMA) on the primary channel to obtain access to the primary channel, and to determine the channel state of the primary channel; and

[0336] Based on the channel state of the primary channel, the channel state of at least one non-primary channel is set.

[0337] 2. The method of embodiment 1, wherein the node is an access point (AP) or an evolved Node B (eNB).

[0338] 3. The method as described in any one of embodiments 1-2, the method also includes:

[0339] Circuitry in the node transmits a protocol data unit (PDU) to at least one wireless transmit / receive unit (WTRU) on each of the aggregate channels, where the PDU is a data PDU or a management PDU.

[0340] 4. The method as in any one of...

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Abstract

A method and apparatus are described for performing channel aggregation to communicate over a non-contiguous spectrum, such as television white space (TVWS), using a plurality of aggregated channels including a primary channel and at least one non-primary channel (e.g., a secondary channel, a tertiary channel or a quaternary channel). Carrier sense multiple access (CSMA) may be performed on the primary channel to obtain access to the primary channel. After waiting an arbitration interframe space (AIFS) and potentially performing backoff on the primary channel, the aggregated channels may be used for transmission. A buffer controller may be used to create, for each of a plurality of access classes (ACs), a logic buffer for each of the channels. A frame controller may be used to provide the buffer controller with aggregated medium access control (MAC) protocol data unit (A-MPDU) frame information, and control aggregation and fragmentation processes.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Application No. 61 / 413,116, filed November 12, 2010, U.S. Provisional Application No. 61 / 413,126, filed November 12, 2010, and U.S. Provisional Application No. 61 / 413,126, filed November 12, 2010. 61 / 413,221, the contents of which are hereby incorporated by reference. Background technique [0003] Local Area Wireless Networks (LANs) can operate with limited bandwidth as more and more bandwidth-hungry wireless applications are deployed in homes or offices. To address this issue, it may be necessary for Wireless Transmit / Receive Units (WTRUs) to operate in emerging spectrum such as Television White Space (TVWS). However, the allowable channels that may be used by a WTRU operating in such spectrum are typically non-contiguous blocks of spectrum. Current wireless technologies do not operate on non-contiguous spectrum allocations in an aggregated fashion. [0004] In order to maximi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W84/12H04W72/54
CPCH04L5/0062H04W72/0446H04W74/0808H04L5/0041H04W88/02H04W84/12H04L5/00H04W74/08H04W72/0453
Inventor Y·戴叶春璇林子柟J-L·格鲁S·艾哈迈德M·M·弗雷达P·穆德格尔N·巴蒂斯顿A·德米尔马良平
Owner INTERDIGITAL PATENT HLDG INC
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