Transmitting apparatus, receiving apparatus, and communication system for formatting data

• US 8,842,645 B2
• Filed: 09/20/2013
• Issued: 09/23/2014
• Est. Priority Date: 12/08/2000
• Status: Expired due to Fees

• Current Assignee: Redwood Technologies, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takahashi, Hiroaki, Suzuki, Mitsuhiro
• Primary Examiner(s): Pezzlo, John
• Application Number:
  US14/032,442
• Publication Number:
  US 20140071962A1
• Time in Patent Office: 368 Days
• Field of Search: 370/337, 370/442
• US Class Current: 370/337
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/3405 Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames

Abstract

A transmitting apparatus, a receiving apparatus, and a communication system are provided that allow a reduction in a frame loss due to interference caused by use of the same channel. A transmitting apparatus disposed in a base station includes a GPS receiver for receiving a GPS signal, a timing generator for controlling respective function blocks in accordance with the GPS signal and an inter-base-station control signal so as to precisely synchronize the timing of frame transmission among base stations, the front-end transmission processing unit including for converting transmission information into transmission time slots, a frame generator for generating a frame including a plurality of time slots and one frame guard, and a back-end transmission processing unit for transmitting the generated frame as a radio signal.

Claims

1. A receiving apparatus for receiving a radio signal, each frame of which includes a series of n time periods and a no signal period after the series of n time periods, n being an integer equal to or greater than 1, each time period including an effective symbol period and a guard interval added to the effective symbol period, the receiving apparatus comprising:

a processing unit configured to receive a transmission signal in a transmission time period among a series of transmission time periods,

wherein the no signal period, having a length less than a length of the series of transmission time periods, is set after the series of said transmission time periods;

wherein a part of a transmission OFDM signal is used in the guard interval.

2. The receiving apparatus according to claim 1, wherein the guard interval is set before an effective symbol period in a transmission time period.

3. The receiving apparatus according to claim 1, wherein at least one signal other than a guard interval in a transmission time period is an OFDM signal.

4. The receiving apparatus according to claim 1, wherein a length of an effective symbol period in a transmission time period is longer than a length of a guard interval in a transmission time period.

5. The receiving apparatus according to claim 1, wherein a length of the no signal period for a transmitting apparatus is longer than a length of a guard interval.

6. The receiving apparatus according to claim 1, wherein the processing unit generates a time period by adding a predetermined guard period to an effective symbol period.

7. The receiving apparatus according to claim 1, further comprising an antenna configured to receive RF signal.

8. The receiving apparatus according to claim 1, further comprising a display.

9. A receiving apparatus for receiving a radio signal, each frame of which includes a series of n time periods and a no signal period after the series of n time periods, n being an integer equal to or greater than 1, each time period including an effective symbol period and a guard interval added to the effective symbol period, the receiving apparatus comprising:

a processing unit configured to receive a transmission signal in a transmission time period among a series of transmission time periods, and

a timing generator for generating a timing signal on a basis of a GPS signal and an inter-base-station control signal for achieving synchronization among base stations, thereby precisely synchronizing the timing of frame transmission among the base stations,

wherein the no signal period, having a length less than a length of the series of transmission time periods, is set after the series of said transmission time periods.

10. A receiving device for receiving a radio signal, each frame of which includes a series of n time periods and a no signal period after the series of n time periods, n being an integer equal to or greater than 1, each time period including an effective symbol period and a guard interval added to the effective symbol period, the receiving device comprising:

circuitry configured to

receive a transmission OFDM signal in a transmission time period among a series of transmission time periods,

wherein the no signal period, having a length less than a length of the series of transmission time periods, is set after the series of said transmission time periods;

wherein a part of the transmission OFDM signal is used in the guard interval.

11. The receiving device according to claim 10, wherein the guard interval is set before an effective symbol period in a transmission time period.

12. The receiving device according to claim 10, wherein a length of an effective symbol period in a transmission time period is longer than a length of a guard interval in a transmission time period.

13. The receiving device according to claim 10, wherein a length of the no signal period for a transmitting device is longer than a length of a guard interval.

14. The receiving device according to claim 10, wherein the processing circuitry generates a time period by adding a predetermined guard period to an effective symbol period.

15. The receiving device according to claim 10, further comprising an antenna configured to receive an RF signal.