发明名称 |
Methods and Apparatus for Multi-Carrier Communications With Variable Channel Bandwidth |
摘要 |
Methods and apparatus for multi-carrier communication with variable channel bandwidth are disclosed, where the time frame structure and the OFDM symbol structure are invariant and the frequency-domain signal structure is flexible. In one embodiment, a mobile station, upon entering a geographic area, uses a core-band to initiate communication and obtain essential information and subsequently switches to full operating bandwidth of the area for the remainder of the communication. If the mobile station operates in a wide range of bandwidths, the mobile station divides the full range into sub-ranges and adjusts its sampling frequency and its FFT size in each sub-range. |
申请公布号 |
US2015155980(A1) |
申请公布日期 |
2015.06.04 |
申请号 |
US201414505913 |
申请日期 |
2014.10.03 |
申请人 |
Intellectual Ventures II LLC |
发明人 |
LI Xiaodong;Lo Titus;Li Kemin;Huang Haiming |
分类号 |
H04L5/00;H04W72/04;H04W72/00 |
主分类号 |
H04L5/00 |
代理机构 |
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代理人 |
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主权项 |
1. In a variable bandwidth wireless communication system communicating under multiple different communication schemes that each have a different bandwidth, a process performed by a base station of generating an information bearing signal for wireless transmission, the process comprising:
utilizing by the base station a number of subcarriers to construct a variable bandwidth wireless channel; utilizing by the base station groups of subcarriers, wherein each group includes a plurality of subcarriers; maintaining fixed spacing between adjacent subcarriers; adding or subtracting, by the base station, groups of subcarriers to scale the variable bandwidth wireless channel and achieve an operating channel bandwidth; and wherein a core-band, including a plurality of subcarrier groups, centered at an operating center frequency of the different communication schemes, is utilized by the base station as a broadcast channel carrying radio control and operation signaling, where the core-band is narrower than a smallest possible operating channel bandwidth of the system. |
地址 |
Wilmington DE US |