Channel access scheme for use in network communications

• US 7,075,943 B2
• Filed: 12/09/2005
• Issued: 07/11/2006
• Est. Priority Date: 10/09/1998
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Bahl, Paramvir
• Primary Examiner(s): PHAM, BRENDA H
• Application Number:
  US11/299,455
• Publication Number:
  US 20060088048A1
• Time in Patent Office: 214 Days
• Field of Search: 370/368, 370/443, 370/468, 370/370, 370/470, 370/314, 370/321, 370/329, 370/336, 370/341, 370/347, 370/349, 370/389, 370/442, 370/458, 370/462, 370/471, 370/494, 370/495, 370/493, 370/498
• US Class Current: 370/459
• CPC Class Codes: H04W 28/20 Negotiating bandwidth
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A full service channel access protocol that supports the integrated transport of voice, video and data communications is provided by dividing a communication channel into a plurality of frames, dividing each of the frames into a plurality of slots, and dividing some of the plurality of slots into a plurality of mini-slots. The mini-slots are provided for use by the multiple communication sources to request the establishment of a new voice, data, or video transmission connection over the communication channel. Additionally, a second one of the plurality of slots is divided into a plurality of second mini-slots for use by the multiple communication sources to request the establishment of a new voice, data, or video transmission connection over the communication channel and for use by the multiple communication sources to augment an existing video connection over the communication channel. The method enables timely and power efficient communications over communication network.

Claims

1. A method of allocating between multiple communication sources a communication channel in a communication network, the method comprising the steps of:

dividing the communication channel into a plurality of frames;

dividing each of the frames into a plurality of slots;

dividing a first one of the plurality of slots into a plurality of first mini-slots for use by the multiple communication sources to request the establishment of a new voice, data or video transmission connection over the communication channel; and

dividing a second one of the plurality of slots into a plurality of second mini-slots also for use by the multiple communication sources to request the establishment of a new voice, data or video transmission connection over the communication channel and for use by the multiple communication sources to augment an existing video connection over the communication channel;

determining which of the multiple communication sources have a preexisting video transmission connection over the communication channel; and

assigning to each of the multiple communication sources that have a preexisting video transmission connection over the communication channel one of the second mini-slots.

2. The method according to claim 1, wherein the communication network comprises a wireless communication link.

3. The method according to claim 1, wherein the communication network comprises a local area network link.

4. The method according to claim 1, wherein the communication network comprises a wide area network link.

5. The method according to claim 1, further comprising the step of determining the number of second mini-slots as a function of the number of the multiple communication sources that have a preexisting video transmission connection over the communication channel.

6. The method according to claim 1, further comprising the step of preventing the plurality of first mini-slots from being used by the multiple communication sources to augment an existing video connection over the communication channel.

7. A computer-readable medium for use in allocating between multiple communication sources a communication channel in a communication network, the computer-readable medium having instruction for performing the steps of:

dividing the communication channel into a plurality of frames;

dividing each of the frames into a plurality of slots;

dividing a first one of the plurality of slots into a plurality of first mini-slots for use by the multiple communication sources to request the establishment of a new voice, data, or video transmission connection over the communication channel; and

dividing a second one of the plurality of slots into a plurality of second mini-slots for use by the multiple communication sources to request the establishment of a new voice, data or video transmission connection over the communication channel and for use by the multiple communication sources to augment an existing video connection over the communication channel;

determining the number of second mini-slots as a function of the number of the multiple communication sources that have a preexisting video transmission connection over the communication channel.

8. The computer-readable medium according to claim 7, further comprising instructions for performing the step of assigning to each of the multiple communication sources that have a preexisting video transmission connection over the communication channel one of the second mini-slots.

9. A method of allocating available bandwidth of a communication channel between multiple communication sources, the method comprising:

allocating the available bandwidth into a plurality of time slices;

partitioning each of the time slices into a plurality of timeslots;

subdividing a first one of the plurality of timeslots into a plurality of first sub-timeslots that are usable by the multiple communication sources to request the establishment of a new connection over the channel; and

subdividing a second one of the plurality of timeslots into a plurality of second sub-timeslots for use by the multiple communication sources to request the establishment of a second new connection over the channel and for use by the multiple communication sources to augment an existing video connection over the communication channel;

determining the number of second sub-timeslots as a function of the number of the multiple communication sources that have a preexisting video transmission connection over the communication channel.