Radio communication system, device and method for radio communication, and computer program

• US 9,888,472 B2
• Filed: 06/25/2015
• Issued: 02/06/2018
• Est. Priority Date: 03/04/2002
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sugaya, Shigeru
• Primary Examiner(s): Choudhury, Faisal
• Application Number:
  US14/750,068
• Publication Number:
  US 20150296511A1
• Time in Patent Office: 957 Days
• Field of Search: 370329, 370252
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal

Abstract

A radio communication device which manages a network defines a predetermined transmission frame cycle, allocates in the frame specific access slots as timing with which the individual radio communication devices in the network concerned receive a transmission, puts the information of the allocation in a beacon signal, and transmits the signal. Each radio communication device performs receiving operation at access slots specific to the device itself defined by the beacon signal. When information transmission is made between arbitrary communication devices in the network, access slots for the device which is to receive the information are used.

Claims

1. A first wireless communication device that communicates with a second wireless communication device via a direct link, the first wireless communication device comprising:

a processor and a memory including instructions which, when executed by the processor, control to;

transmit a first beacon and receive a second beacon from the second wireless communication device;

set a transmission interval of the first beacon; and

set a period when the first wireless communication device can communicate with the second wireless communication device, the period being in said transmission interval, and

wherein the first beacon includes information indicating the period, and

wherein the information indicates a plurality of first periods for reception allocated specifically respectively for the first wireless communication device and the second wireless communication device, in which the first periods are in contention access periods.

2. The first wireless communication device of claim 1, wherein the first wireless communication device and the second another wireless communication device perform reception processing respectively only at the first periods specifically allocated thereto.

3. The first wireless communication device of claim 2, wherein the first wireless communication device performs a transmission processing operation utilizing the first periods specifically allocated to destinations of transmission in a direct communication network.

4. The first wireless communication device of claim 2, wherein the first beacon is at a start of a management frame.

5. A method for wireless communication comprising:

transmitting, from a first wireless communication device, a first beacon and receiving, at the first wireless communication device, a second beacon from a second wireless communication device;

setting, by a processing device, a transmission interval of the first beacon; and

setting, by the processing device, a period when the first wireless communication device can communicate with the second wireless communication device via a direct link, the period being in said transmission interval, and

wherein the first beacon includes information indicating the period, and

wherein the information indicates a plurality of first periods for reception allocated specific respectively for the first wireless communication device and the second wireless communication device, in which the first periods are in contention access periods.

6. The method of claim 5, wherein the first wireless communication device and the second wireless communication device perform reception processing respectively only at the first periods specifically allocated thereto.

7. The method of claim 6, wherein the first wireless communication device performs a transmission processing operation utilizing the first periods specifically allocated to destinations of transmission in a direct communication network.

8. The method of claim 6, wherein the beacon signal is at a start of a management frame.