Circular buffer for a TDMA data transmission station and corresponding data transmission station

• US 6,553,424 B1
• Filed: 09/25/1998
• Issued: 04/22/2003
• Est. Priority Date: 09/25/1997
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Infineon Technologies AG
• Inventors: Kranz, Christian, Bötzel, Ulrich
• Primary Examiner(s): Harrell, Robert B.
• Assistant Examiner(s): Jaroenchonwanit, Bunjob
• Application Number:
  US09/160,877
• Time in Patent Office: 1,670 Days
• Field of Search: 370/280, 370/294, 370/321, 370/915, 370/330, 709/234
• US Class Current: 709/234
• CPC Class Codes: G06F 5/06 for changing the speed of data flow, i.e. speed regularising or timing, e.g. delay lines, FIFO buffers; over- or underrun control therefor G06F7/78 takes precedence

Abstract

A circular buffer for a TDMA data transmission station temporarily stores digital transmit data occurring over a number of time slots in the transmission station and to be transmitted during a subsequent transmit time slot, and temporarily stores digital receive data received by the transmission station during a receive time slot and to be processed by it in a number of subsequent time slots. A TDMA data transmission station having a circular buffer is also provided.

Claims

1. A TDMA data station, comprising:

a pointer; and

a circular buffer having time slots with said pointer moving sequentially through said circular buffer, said circular buffer being for storing a B field of transmit data throughout a DECT frame and transmitting the B field of transmit data at a transmit time slot, and for storing a B field of receive data at a receive time slot and reading the B field of receive data throughout the DECT frame;

said transmit time slot and said receive time slot being separated in said circular buffer; and

said circular buffer being sized less than twice the B field.

2. The TDMA station according to claim 1, including only one pointer.

3. The TDMA station according to claim 1, wherein a first half of said timeslots in said buffer are for storing receive data and a second half of said time slots are for storing transmit data.

4. The TDMA station according to claim 1, wherein the transmit data are stored on one side of said pointer and received data are stored on the other side of said pointer.

5. The TDMA station according to claim 1, wherein said read timeslot and said transmit timeslot are evenly spaced over the DECT frame.

6. The TDMA station according to claim 5, wherein said buffer is one-and-one-half times as large as the B field.

7. The circular buffer according to claim 1, wherein receive data temporarily stored in the circular buffer during a receive time slot are overwritten, in an order in which they have been temporarily stored, by transmit data to be transmitted in a subsequent transmit time slot.

8. The circular buffer according to claim 1, wherein the transmit data and receive data are each user data of one respective B field for a DECT data transmission station.