Flexible WLAN/WPAN system with high throughput

• US 20100034183A1
• Filed: 07/31/2009
• Published: 02/11/2010
• Est. Priority Date: 08/05/2008
• Status: Abandoned Application

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Hansen, Christopher J., Erceg, Vinko, Nandagopalan, Saishankar
• Application Number:
  US12/533,900
• Publication Number:
  US 20100034183A1
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 12/413 with random access, e.g. carrier-sense multiple-access with collision detection [CSMA-CD]

Abstract

Flexible WLAN/WPAN system with high throughput. A medium access controller (MAC), that is capable to be implemented within a communication device, is operative in accordance with any one of a number of capability sets, based on which capability set is enabled when implemented within a particular communication device. Each respective capability set directs operation of the MAC in accordance with a corresponding set of operational parameters. The enabling of one of the capability sets may be based upon one or more of a type of physical layer transceiver (PHY) with which the MAC interfaces (e.g., within the communication device), a communication protocol by which the apparatus communicates with a communication network, and/or other considerations. The MAC can include an optimization module therein that is operative to adjust one or more operational parameters based on a change of an operational condition of the communication network with which the communication device communicates.

Claims

1. An apparatus, comprising:

a medium access controller (MAC) that is operative in accordance each of a plurality of capabilities, one of the plurality of capabilities being selectable for use in the apparatus; and

wherein;

when the MAC is implemented within the apparatus, one of the plurality of capabilities of the MAC is enabled based on each of;

a type of physical layer transceiver (PHY) with which the MAC interfaces; and

a communication protocol by which the apparatus communicates with a communication network; and

wherein;

each of the plurality of capabilities of the MAC has a respective plurality of operational parameters by which the MAC can operate;

the communication protocol employs carrier sense multiple access/collision avoidance (CSMA/CA) functionality adapted to arbitrate between a first request made by the apparatus to access the communication network and a second request made by at least one additional apparatus to access the communication network; and

the MAC includes an optimization module that is operative to adjust at least one operational parameter based on a change of an operational condition of the communication network.

2. The apparatus of claim 1, wherein:

the MAC is operative in accordance with a first plurality of operational parameters when a first capability of the plurality of capabilities of the MAC is enabled; and

the MAC is operative in accordance with a second plurality of operational parameters when a second capability of the plurality of capabilities of the MAC is enabled.

3. The apparatus of claim 1, wherein:

a first plurality of operational parameters includes an operational parameter; and

a second plurality of operational parameters also includes the operational parameter.

4. The apparatus of claim 1, wherein:

at least one of the plurality of capabilities includes a prioritization capability to map a plurality of user priorities to a plurality of access categories.

5. The apparatus of claim 1, wherein:

the communication protocol is a first communication protocol;

the apparatus is operative to receive a superframe that includes a contention access period (CAP) and a plurality of channel time allocation (CTA) periods;

during the CAP, the communication protocol is operative to employ the CSMA/CA functionality adapted to arbitrate between the first request made by the apparatus to access the communication network and the second request made by at least one additional apparatus to access the communication network; and

during the plurality of CTA periods, the communication protocol is operative to employ polled access thereby allowing the apparatus to access the communication network at a first time and the at least one apparatus to access the communication network at a second time.

6. The apparatus of claim 1, wherein the communication protocol supports at least one of:

block acknowledgement;

frame aggregation;

reverse direction grant;

automatic power saving delivery (APSD) functionality;

direct peer to peer linking between the apparatus and at least one additional apparatus; and

hybrid automatic repeat request (HARQ) functionality.

7. The apparatus of claim 1, wherein:

the apparatus is a communication device that includes the MAC and one PHY;

the MAC interfaces with the one PHY; and

the one PHY is a single carrier type PHY.

8. The apparatus of claim 1, wherein:

the apparatus is a communication device that includes the MAC and one PHY;

the MAC interfaces with the one PHY; and

the one PHY is an orthogonal frequency division multiplexing (OFDM) type PHY.

9. The apparatus of claim 1, wherein:

the apparatus is a wireless communication device; and

the wireless communication device is a transceiver.

10. An apparatus, comprising:

a medium access controller (MAC) that is operative in accordance each of a plurality of capabilities, one of the plurality of capabilities being selectable for use in the apparatus; and

wherein;

when the MAC is implemented within the apparatus, one of the plurality of capabilities of the MAC is enabled based on at least one of;

a type of physical layer transceiver (PHY) with which the MAC interfaces; and

a communication protocol by which the apparatus communicates with a communication network; and

wherein;

each of the plurality of capabilities of the MAC has a respective plurality of operational parameters by which the MAC can operate.

11. The apparatus of claim 10, wherein:

the communication protocol employs carrier sense multiple access/collision avoidance (CSMA/CA) functionality adapted to arbitrate between competing requests by the apparatus and at least one additional apparatus to access the communication network.

12. The apparatus of claim 10, wherein:

one of the plurality of capabilities includes a prioritization capability to map a plurality of user priorities to a plurality of access categories.

13. The apparatus of claim 10, wherein the MAC further comprises:

an optimization module that is operative to adjust at least one operational parameter based on a change of an operational condition of the communication network.

14. The apparatus of claim 10, wherein:

the communication protocol is a first communication protocol;

the apparatus receives a superframe that includes a contention access period (CAP) and a plurality of channel time allocation (CTA) periods;

during the CAP, the communication protocol employs carrier sense multiple access/collision avoidance (CSMA/CA) functionality adapted to arbitrate between competing requests by the apparatus and at least one additional apparatus to access the communication network; and

during the plurality of CTA periods, the communication protocol employs polled access thereby allowing the apparatus to access the communication network at a first time and the at least one apparatus to access the communication network at a second time.

15. The apparatus of claim 10, wherein the communication protocol supports at least one of:

block acknowledgement;

frame aggregation;

reverse direction grant;

automatic power saving delivery (APSD) functionality;

direct peer to peer linking between the apparatus and at least one additional apparatus; and

hybrid automatic repeat request (HARQ) functionality.

16. The apparatus of claim 10, wherein:

the apparatus is a communication device that includes the MAC and one PHY;

the MAC interfaces with the one PHY; and

the one PHY is a single carrier type PHY.

17. The apparatus of claim 10, wherein:

the apparatus is a communication device that includes the MAC and one PHY;

the MAC interfaces with the one PHY; and

the one PHY is an orthogonal frequency division multiplexing (OFDM) type PHY.

18. The apparatus of claim 10, wherein:

the apparatus is a wireless communication device; and

the wireless communication device is a transceiver.

19. An apparatus, comprising:

a physical layer transceiver (PHY); and

a medium access controller (MAC), connected to the PHY, that is operative in accordance each of a plurality of capabilities, one of the plurality of capabilities being selectable for use in the apparatus; and

wherein;

when the MAC is implemented within the apparatus, one of the plurality of capabilities of the MAC is enabled based on each of;

a type of the physical layer transceiver (PHY) with which the MAC interfaces; and

a communication protocol by which the apparatus communicates with a communication network; and

wherein;

each of the plurality of capabilities of the MAC has a respective plurality of operational parameters by which the MAC can operate;

the communication protocol employs carrier sense multiple access/collision avoidance (CSMA/CA) functionality adapted to arbitrate between a first request made by the apparatus to access the communication network and a second request made by at least one additional apparatus to access the communication network;

the MAC includes an optimization module that is operative to adjust at least one operational parameter based on a change of an operational condition of the communication network;

the MAC is operative in accordance with a first plurality of operational parameters when a first capability of the plurality of capabilities of the MAC is enabled;

the MAC is operative in accordance with a second plurality of operational parameters when a second capability of the plurality of capabilities of the MAC is enabled; and

the PHY is a single carrier type PHY or an orthogonal frequency division multiplexing (OFDM) type PHY.

20. The apparatus of claim 19, wherein:

the communication protocol is a first communication protocol;

the apparatus receives a superframe that includes a contention access period (CAP) and a plurality of channel time allocation (CTA) periods;

during the CAP, the communication protocol employs carrier sense multiple access/collision avoidance (CSMA/CA) functionality adapted to arbitrate between competing requests by the apparatus and at least one additional apparatus to access the communication network; and

during the plurality of CTA periods, the communication protocol employs polled access thereby allowing the apparatus to access the communication network at a first time and the at least one apparatus to access the communication network at a second time.