发明名称 |
METHOD AND APPARATUS FOR SUPPORTING WIDEBAND AND MULTIPLE BANDWIDTH TRANSMISSION PROTOCOLS |
摘要 |
Enhanced protocols and devices may be used to alleviate loss of spectrum efficiency in wideband transmission. The protocols may implement a wideband transmission opportunity (TXOP) truncation where one or more of the channels involved in communication over the wideband are released. In one scenario, a wireless transmit/receive unit (WTRU) may obtain a TXOP for a 2 MHz bandwidth mode frame transmission with another device capable of operating in a 2 MHz bandwidth mode and a 1 MHz bandwidth mode. The WTRU may conduct a request-to-send (RTS)/clear-to-send (CTS) frame exchange in the second bandwidth mode, and truncate the TXOP by transmitting a contention free (CF)-End frame in the first and second bandwidth modes. In another scenario, an AP may obtain a TXOP for a 2 MHz bandwidth mode frame transmission with a WTRU capable of both 2 MHz and 1 MHz bandwidth modes. |
申请公布号 |
US2016295610(A1) |
申请公布日期 |
2016.10.06 |
申请号 |
US201615180231 |
申请日期 |
2016.06.13 |
申请人 |
InterDigital Patent Holdings, Inc. |
发明人 |
Grandhi Sudheer A.;Anepu Bhaskar M.;Wang Xiaofei |
分类号 |
H04W74/04;H04W28/26;H04W76/02;H04W28/06 |
主分类号 |
H04W74/04 |
代理机构 |
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代理人 |
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主权项 |
1. A method for use in a first wireless transmit/receive unit (WTRU), the method comprising:
generating a contention free (CF)-End frame that includes a duration field and a basic service set identifier (BSSID) field indicating a medium access control (MAC) address associated with an access point (AP), wherein the BSSID field includes an individual/group bit; on a condition that a transmit opportunity (TXOP) is being truncated, setting the individual/group bit of the BSSID field to a value of one (1), and setting a scrambling sequence associated with the CF-End frame to indicate a bandwidth associated with the TXOP being truncated by the first WTRU; and transmitting the CF-End frame to enable a second WTRU receiving the CF-End frame to set a network allocation vector (NAV) associated with the indicated bandwidth. |
地址 |
Wilmington DE US |