Wireless transmitting method

• US 6,466,587 B1
• Filed: 02/19/1999
• Issued: 10/15/2002
• Est. Priority Date: 02/23/1998
• 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): TON, DANG T
• Application Number:
  US09/252,779
• Time in Patent Office: 1,334 Days
• Field of Search: 370/468, 370/465, 370/466, 370/443, 370/461, 370/395, 370/280, 370/252, 370/254, 370/294, 370/389, 370/503, 370/509, 370/442, 370/347, 370/337, 370/336, 370/338, 370/321, 370/345, 370/349, 370/401, 709/237, 709/222, 709/228, 709/232, 709/243, 348/384.1, 348/387.1
• US Class Current: 370/468
• CPC Class Codes: H04L 12/40052 High-speed IEEE 1394 serial bus bus transfer protocol on a daisy chain bus using an embedded synchronisation G06F13/426
• CPC Class Codes: H04L 12/40058 Isochronous transmission
• CPC Class Codes: H04L 12/40065 Bandwidth and channel allocation home automation networks H04L12/2803; flow control H04L47/10
• CPC Class Codes: H04L 2012/5607 Radio
• CPC Class Codes: H04L 2012/5675 Timeslot assignment, e.g. TDMA
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/02 Hybrid access

Abstract

A wireless transmitting method, for use with digital electronic unit including the steps of forming a frame having a predetermined time period, placing a stream transmission area SPA and an asynchronous transmission area ASYNCA in the frame, the stream transmission area SPA having a predetermined number of time slots SL1, SL2, . . . for transmitting data, allocating isochronous data to the time slots, transmitting the isochronous data in the stream transmission area SPA, transmitting asynchronous data in the asynchronous transmission area ASYNCA, and changing the allocation of the time slots and widening the asynchronous transmission area ASYNCA of the frame so as to gather the asynchronous transmission area ASYNCA when a time slot is unallocated.

Claims

1. A wireless transmitting method, comprising the steps of:

forming a frame having a predetermined time period;

placing a stream transmission period and an asynchronous transmission period in the frame, wherein the stream transmission period includes a predetermined number of time slots for transmitting data;

allocating isochronous data to the time slots;

transmitting the isochronous data in the stream transmission period; and

transmitting asynchronous data in the asynchronous transmission period, wherein the stream transmission period and the asynchronous transmission period are adaptively varied in length so that when there is no isochronous data to be transmitted, the asynchronous transmission period is expanded to occupy the entire stream transmission period resulting in only the asynchronous data being transmitted in the frame.

2. The wireless transmission method as set forth in claim 1, wherein the time slots are allocated with information in a control area of the frame.

3. A wireless transmitting method, comprising the steps of:

forming a frame having a predetermined time period;

placing a stream transmission period and an asynchronous transmission period in the frame, wherein the stream transmission period includes a predetermined number of time slots for transmitting data;

allocating isochronous data to the time slots;

transmitting the isochronous data in the stream transmission period;

transmitting asynchronous data in the asynchronous transmission period, wherein the stream transmission period and the asynchronous transmission period are adaptively varied in length so that when there is no isochronous data to be transmitted, the asynchronous transmission period is expanded to occupy the entire stream transmission period resulting in only the asynchronous data being transmitted in the frame; and

changing an allocation of the time slots of the stream transmission period for widening the asynchronous transmission period of the frame when a time slot is unallocated.

4. A wireless transmitting method, comprising the steps of:

forming a frame having a predetermined time period;

placing a stream transmission period and an asynchronous transmission period in the frame, wherein the stream transmission period includes a predetermined number of time slots for transmitting data;

allocating isochronous data to the time slots;

transmitting the isochronous data in the stream transmission period;

transmitting asynchronous data in the synchronous transmission period, wherein the stream transmission period and the asynchronous transmission period are adaptively varied in length so that when there is no isochronous data to be transmitted, the asynchronous transmission period is expanded to occupy the entire stream transmission period resulting in only the asynchronous data being transmitted in the frame;

searching a data stream having unallocated time slots for substitute time slots; and

placing the substitute time slots of the searched data stream in positions of the unallocated time slots so as to widen the asynchronous transmission period.

5. A base station for use in a wireless system, comprising:

means for forming a frame having a predetermined time period;

means for placing a stream transmission period and an asynchronous transmission period in the frame, wherein the stream transmission period includes a predetermined number of time slots for transmitting data;

means for allocating isochronous data to the time slots;

means for transmitting the isochronous data in the stream transmission period; and

means for transmitting asynchronous data in the asynchronous transmission period, wherein the stream transmission period and the asynchronous transmission period are adaptively varied in length so that when there is no isochronous data to be transmitted, the asynchronous transmission period is expanded to occupy the entire stream transmission period resulting in only the asynchronous data being transmitted in the frame.