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 | |||
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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 | |||||
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| 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 base station having a plurality of sectors, having a plurality of radio channels in each of the sectors, and transmitting signals each composed of a plurality of frames through the plurality of the radio channels in each of the sectors, the base station comprising:
means for generating a plurality of signals;
means for spreading each of the plurality of generated signals by using a long code; and
means for transmitting the plurality of spread signals such that each one of the plurality of signals is transmitted through a distinct corresponding radio channel in a distinct corresponding sector,
wherein the means for spreading makes a phase of the long code different from each other between the plurality of sectors,
the means for transmitting makes frame transmission timings of the plurality of spread signals different from each other between the plurality of sectors, and
the means for transmitting makes, for any given sector of the plurality of sectors, the frame transmission timing of the corresponding spread signal transmitted through each of the plurality of radio channels, different from each other between the plurality of radio channels within any given sector of the plurality of sectors.', 'means for generating a plurality of signals;', 'means for spreading each of the plurality of generated signals by using a long code; and', 'means for transmitting the plurality of spread signals such that each one of the plurality of signals is transmitted through a distinct corresponding radio channel in a distinct corresponding sector,', 'wherein the means for spreading makes a phase of the long code different from each other between the plurality of sectors,', 'the means for transmitting makes frame transmission timings of the plurality of spread signals different from each other between the plurality of sectors, and', 'the means for transmitting makes, for any given sector of the plurality of sectors, the frame transmission timing of the corresponding spread signal transmitted through each of the plurality of radio channels, different from each other between the plurality of radio channels within any given sector of the plurality of sectors.
2. The base station as claimed in claim 1, wherein the phase of the long code and the frame transmission timing in each of the plurality of sectors are determined based on an offset value of the sector.
3. A transmission method in a base station having a plurality of sectors, having a plurality of radio channels in each of the sectors, and transmitting signals each composed of a plurality of frames through the plurality of the radio channels in each of the sectors, the transmission method comprising the steps of:
generating a plurality of signals;
spreading each of the plurality of generated signals by using a long code; and
transmitting the plurality of spread signals such that each one of the plurality of signals is transmitted through a distinct corresponding radio channel in a distinct corresponding sector,
wherein the step of spreading makes a phase of the long code different from each other between the plurality of sectors,
the step of transmitting makes frame transmission timings of the plurality of spread signals different from each other between the plurality of sectors, and
the step of transmitting makes, for any given sector of the plurality of sectors, the frame transmission timing of the corresponding spread signal transmitted through each of the plurality of radio channels, different from each other between the plurality of channels within any given sector of the plurality of sectors.', 'generating a plurality of signals;', 'spreading each of the plurality of generated signals by using a long code; and', 'transmitting the plurality of spread signals such that each one of the plurality of signals is transmitted through a distinct corresponding radio channel in a distinct corresponding sector,', 'wherein the step of spreading makes a phase of the long code different from each other between the plurality of sectors,', 'the step of transmitting makes frame transmission timings of the plurality of spread signals different from each other between the plurality of sectors, and', 'the step of transmitting makes, for any given sector of the plurality of sectors, the frame transmission timing of the corresponding spread signal transmitted through each of the plurality of radio channels, different from each other between the plurality of channels within any given sector of the plurality of sectors.
4. The transmission method as claimed in claim 3, where the phase of the long code and the frame transmission timing in each of the plurality of sectors are determined based on an offset value of the sector.']
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Patent number:US7095780B2
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