RADIO RESOURCE ASSIGNMENT METHOD FOR PHYSICAL CHANNEL IN UPLINK, AND TRANSMITTER FOR MOBILE APPARATUSES

• US 20090103483A1
• Filed: 03/27/2006
• Published: 04/23/2009
• Est. Priority Date: 03/31/2005
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Sawahashi, Mamoru, Higuchi, Kenichi, Atarashi, Hiroyuki
• Granted Patent: US 8,971,283 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0016 Time-frequency-code
• CPC Class Codes: H04L 5/0039 Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 72/53 based on regulatory allocation policies
• CPC Class Codes: H04W 74/02 Hybrid access

Abstract

A radio resource assignment method for a physical channel in an uplink directed from a mobile apparatus to a base station in a radio communication system, includes: assigning a contention-based channel and a scheduled channel according to one of a time division scheme, a frequency division scheme, and a hybrid scheme of the time division scheme and the frequency division scheme. In addition, radio resources are properly assigned to each of the contention-based channel, a common control channel of the scheduled channel, and a shared data channel of the scheduled channel.

Claims

1. A radio resource assignment method for a physical channel in an uplink directed from a mobile apparatus to a base station in a radio communication system, comprising:

assigning a contention-based channel and a scheduled channel according to one of a time division scheme, a frequency division scheme, and a hybrid scheme of the time division scheme and the frequency division scheme.

2. The radio resource assignment method for the physical channel in the uplink as claimed in claim 1, comprising:

assigning an entire channel band to the contention-based channel.

3. The radio resource assignment method for the physical channel in the uplink as claimed in claim 1, comprising:

assigning a single frequency block or a plurality of frequency blocks to the contention-based channel.

4. The radio resource assignment method for the physical channel in the uplink as claimed in claim 1, comprising:

assigning a transmission frequency band that becomes wide or narrow according to a size of a data rate to the contention-based channel.

5. The radio resource assignment method for the physical channel in the uplink as claimed in claim 2, comprising:

forming a continuous spectrum in the assigned frequency band.

6. The radio resource assignment method for the physical channel in the uplink as claimed in claim 2, comprising:

forming a comb-shaped spectrum in the assigned frequency band.

7. The radio resource assignment method for the physical channel in the uplink as claimed in claim 1 comprising:

assigning an entire channel band to a common control channel of the scheduled channel.

8. The radio resource assignment method for the physical channel in the uplink as claimed in claim 1, comprising:

assigning a signal frequency block or a plurality of frequency blocks to a common control channel of the scheduled channel.

9. The radio resource assignment method for the physical channel in the uplink as claimed in claim 1, comprising:

assigning a transmission frequency band that becomes wide or narrow according to a size of a data rate to a common control channel of the scheduled channel.

10. The radio resource assignment method for the physical channel in the uplink as claimed in claim 7, comprising:

forming a continuous spectrum in the assigned frequency band.

11. The radio resource assignment method for the physical channel in the uplink as claimed in claim 7, comprising:

forming a comb-shaped spectrum in the assigned frequency band.

12. The radio resource assignment method for the physical channel in the uplink as claimed in claim 1, comprising:

assigning an entire channel band to a shared data channel of the scheduled channel to perform scheduling in a time domain.

13. The radio resource assignment method for the physical channel in the uplink as claimed in claim 1, comprising:

performing scheduling in a time domain by fixing a frequency block in a frequency domain for a shared data channel of the scheduled channel.

14. The radio resource assignment method for the physical channel in the uplink as claimed in claim 1, comprising:

performing scheduling based on a frequency block of a frequency domain and a time domain for a shared data channel of the scheduled channel.

15. The radio resource assignment method for the physical channel in the uplink as claimed in claim 13, comprising:

performing multiplexing in the frequency block based on frequency division by a comb-shaped spectrum, normal frequency division, time division or code division.

16. A transmitter for mobile apparatuses, comprising:

means that assigns a contention-based channel and a scheduled channel according to one of a time division scheme, a frequency division scheme, and a hybrid scheme of the time division scheme and the frequency division scheme so as to perform transmission.

17. The transmitter for mobile apparatuses as claimed in claim 16, comprising:

a channel coding unit that performs channel coding for transmission data;

a data modulation unit that modulates the channel-coded transmission data;

a spreading unit that spreads the modulated transmission data;

a symbol repetition unit that repeats symbols of the spread transmission data;

a frequency offset adding unit that provides frequency offsets for each user to the symbol-repeated transmission data;

a data modulation/spreading factor/channel coding control unit that controls the channel coding unit, the data modulation unit and the spreading unit according to a channel type of the transmission data and to MCS information for the user provided from a base station; and

a frequency diversity/scheduling unit that controls the symbol repetition unit and the frequency offset adding unit according to the channel type of the transmission data, announcement information, provided from the base station, of radio resource assignment to each physical channel and scheduling result information for the user.

18. The transmitter for mobile apparatuses as claimed in claim 16, comprising:

a channel coding unit that performs channel coding for transmission data;

a data modulation unit that modulates the channel-coded transmission data;

a spreading unit that spreads the modulated transmission data;

a FFT unit that converts the spread transmission data into signals of a frequency domain;

a frequency domain signal generation unit that maps the transmission data converted to the frequency domain to the frequency domain;

an IFFT unit that converts the transmission data mapped to the frequency domain to signals of a time domain;

a data modulation/spreading factor/channel coding control unit that controls the channel coding unit, the data modulation unit and the spreading unit according to a channel type of the transmission data and to MCS information for the user provided from the base station; and

a frequency diversity/scheduling unit that controls the frequency domain signal generation unit according to the channel type of the transmission data, announcement information, provided from the base station, of radio resource assignment to each physical channel and scheduling result information for the user.

19. The transmitter for mobile apparatuses as claimed in claim 16, comprising:

a channel coding unit that performs channel coding for transmission data;

a data modulation unit that modulates the channel-coded transmission data;

a spreading unit that spreads the modulated transmission data;

a serial/parallel conversion unit that converts the spread transmission data into parallel signals;

a frequency domain signal generation unit that maps the transmission data converted to the parallel signals to the frequency domain;

an IFFT unit that converts the transmission data mapped to the frequency domain to signals of a time domain;

a data modulation/spreading factor/channel coding control unit that controls the channel coding unit, the data modulation unit and the spreading unit according to a channel type of the transmission data and to MCS information for the user provided from the base station; and

a frequency diversity/scheduling unit that controls the frequency domain signal generation unit according to the channel type of the transmission data, announcement information, provided from the base station, of radio resource assignment to each physical channel and scheduling result information for the user.

20. The transmitter for mobile apparatuses as claimed in claim 16, comprising:

a channel coding unit that performs channel coding for transmission data;

a data modulation unit that modulates the channel-coded transmission data;

a spreading unit that spreads the modulated transmission data;

a switch unit that selects and branches the spread transmission data;

a FFT unit that converts the selected and branched transmission data into signals of a frequency domain;

a serial/parallel conversion unit that converts the selected and branched transmission data into parallel signals;

a frequency domain signal generation unit that maps output signals of the FFT unit or the serial/parallel conversion unit to the frequency domain;

an IFFT unit that converts the transmission data mapped to the frequency domain to signals of a time domain;

a data modulation/spreading factor/channel coding control unit that controls the channel coding unit, the data modulation unit and the spreading unit according to a channel type of the transmission data and to MCS information for the user provided from the base station; and

a frequency diversity/scheduling unit that controls the frequency domain signal generation unit according to the channel type of the transmission data, announcement information, provided from the base station, of radio resource assignment to each physical channel and scheduling result information for the user.