Abstract
A base station including a transmitting and receiving amplifier for amplifying CDMA signals exchanged with a mobile station; a radio stage connected to the transmitting and receiving amplifier for carrying out D/A conversion of a transmitted signal that undergoes baseband spreading followed by quadrature modulation and for carrying out quasi-coherent detection of a received signal followed by A/D conversion; a baseband signal processor connected with the radio stage for carrying out baseband signal processing of the transmitted signal and the received signal; a transmission interface connected with the baseband signal processor for implementing interface with external channels; and a base station controller for carrying out control such as management of radio channels and establishment and release of the radio channels. The base station communicates with the external channels by mapping logical channels into physical channels. The CDMA signals are spread using a short code and a long code.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 03/09/2011 | ISLD-201108-002 | NTT DOCOMO INC |
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No | Family Member | |||
| 4G | 16/06/2019 | ISLD-201906-020 | NTT DOCOMO INC | Yes | Basis Patent | ||||
| 4G | 10/07/2019 | ISLD-201907-008 | NTT DOCOMO INC | No | Family Member | ||||
Specification Information
Specification Information
Technologies
Family Information
| All Granted Patents In Patent Family : | ---- |
| All Pending Patents In Patent Family : | ---- |
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||||
| ----- | ----- | ----- | ----- | ----- |
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Technologies
Channel Arrangement/Coding
Product
Use Cases
Wireless communication
Services
Claim
1. A digital radio communication method comprising the steps of:
transmitting, on a transmitting side, known pilot symbols at every slot, a predetermined number of said slots forming a frame;
receiving, on a receiving side, said known pilot symbols,
wherein said known pilot symbols of each slot consists of a known pilot symbol portion and a sync word portion for frame alignment, the known pilot symbol portion and the sync word portion in each slot being aligned consecutively;
establishing frame alignment using said known sync word portion; and
after establishing the frame alignment, carrying out coherent detection using the received known pilot symbols,
wherein said step of carrying out coherent detection carries out the coherent detection using said known pilot symbol portion and sync word portion.', 'transmitting, on a transmitting side, known pilot symbols at every slot, a predetermined number of said slots forming a frame;', 'receiving, on a receiving side, said known pilot symbols,', 'wherein said known pilot symbols of each slot consists of a known pilot symbol portion and a sync word portion for frame alignment, the known pilot symbol portion and the sync word portion in each slot being aligned consecutively;', 'establishing frame alignment using said known sync word portion; and', 'after establishing the frame alignment, carrying out coherent detection using the received known pilot symbols,', 'wherein said step of carrying out coherent detection carries out the coherent detection using said known pilot symbol portion and sync word portion.
2. The digital radio communication method as claimed in claim 1, wherein said known pilot symbols of each slot comprise multiple known pilot symbol portions and multiple sync word portions aligned consecutively, and wherein said known pilot symbol portions and said sync word portions are transmitted alternately in each slot.
3. A reception method for a digital radio communication method comprising the steps of:
receiving known pilot symbols, which have been transmitted at every slot, a predetermined number of said slots forming a frame,
wherein said known pilot symbols of each slot consist of a known pilot symbol portion and a sync word portion for frame alignment, the known pilot symbol portion and the sync word portion in each slot being aligned consecutively;
establishing frame alignment using said known sync word portion; and
after establishing the frame alignment, carrying out coherent detection using the received known pilot symbols,
wherein said step of carrying out coherent detection carries out the coherent detection using said known pilot symbol portion and sync word portion.', 'receiving known pilot symbols, which have been transmitted at every slot, a predetermined number of said slots forming a frame,', 'wherein said known pilot symbols of each slot consist of a known pilot symbol portion and a sync word portion for frame alignment, the known pilot symbol portion and the sync word portion in each slot being aligned consecutively;', 'establishing frame alignment using said known sync word portion; and', 'after establishing the frame alignment, carrying out coherent detection using the received known pilot symbols,', 'wherein said step of carrying out coherent detection carries out the coherent detection using said known pilot symbol portion and sync word portion.
4. The reception method for a digital radio communication method as claimed in claim 3, wherein said known pilot symbols of each slot comprise multiple known pilot symbol portions and multiple sync word portions aligned consecutively, and wherein said known pilot symbol portions and said sync word portions are transmitted alternately in each slot.']
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Patent number:US8005120B2
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
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