Apparatus and method of communication in a wireless network

• US 8,363,579 B2
• Filed: 12/08/2008
• Issued: 01/29/2013
• Est. Priority Date: 12/08/2008
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Li, Guoqing, Gopalakrishnan, Praveen, Somayazulu, Vallabhajosyula S.
• Primary Examiner(s): Moore, Ian N
• Assistant Examiner(s): Nguyen, Thai
• Application Number:
  US12/329,655
• Publication Number:
  US 20100142495A1
• Time in Patent Office: 1,513 Days
• Field of Search: 370/338, 370/445, 370/447, 370/448, 370/229, 370/348, 455/421.1, 455/443, 455/444, 455/445, 455/447
• US Class Current: 370/310
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 84/10 Small scale networks; Flat hierarchical networks

Abstract

A wireless communication device and a method of communication in a wireless personal area network (WPAN) are provided. The method includes assigning a shared channel time allocation across one or more neighbored networks, announcing the shared channel time allocation to the one or more neighbored networks enabling the neighbored network use the shared channel time allocation and communicating using a directional network access protocol on the shared channel time allocation which is towered directed to a communicated device.

Claims

1. A method of communication in a wireless personal area network (WPAN) comprising:

assigning a contention access period (CAP) within a superframe for communication within said WPAN according to a contention access mechanism, followed by a channel time allocation period (CTAP) within said superframe;

allocating within the CTAP at least a shared channel time allocation (SCTA) for sharing by the WPAN and one or more other WPANs to allow said WPAN and said one or more other WPANs to perform communication during the SCTA according to a Carrier Sense Multiple Access With Collision Avoidance (CSMA/CA) protocol;

announcing the shared channel time allocation to the one or more other WPANs to enable at least one WPAN of the one or more other WPANs to use the shared channel time allocation; and

during said shared channel time allocation, communicating with a communicated device of said WPAN using a directional network access protocol, which is directed to said communicated device, wherein using the directional network access protocol includes using the CSMA/CA protocol on a direction towards said communicated device.

2. The method of claim 1 comprising:

allocating within said CTAP at least one channel time allocation (CTA) dedicated to a user of said WPAN, wherein said CTA does not overlap CTAs allocated in said one or more other WPANs.

3. The method of claim 1, comprising:

adjusting a length of the channel time allocation period and a length of the shared channel time allocation based on link traffic.

4. The method of claim 1, comprising synchronizing between said superframe and each of one or more superframes of said one or more other WPANs, wherein announcing comprises:

announcing the shared channel time allocation in a sync beacon while other piconet controllers of the one or more other WPANs listen.

5. The method of claim 4, wherein the announcing of the shared channel time allocation is based on a number of announced WPANs.

6. The method of claim 1, wherein announcing comprises:

announcing the shared channel time allocation in a dedicated frame, which includes an offset of the shared channel time allocation with respect to transmission of the dedicated frame.

7. The method of claim 1, wherein announcing comprises:

announcing the shared channel time allocation to a plurality of links of said WPAN.

8. The method of claim 2, comprising:

transmitting on the CTA a base layer of data; and

transmitting on the shared channel time allocation an enhancement data layer of said data.

9. A wireless communication device comprising:

a network controller to assign a contention access period (CAP) within a superframe for communication within a WPAN according to a contention access mechanism, followed by a channel time allocation period (CTAP) within said superframe;

to allocate within the CTAP at least a shared channel time allocation (SCTA) for sharing by the WPAN and one or more other WPANs to allow said WPAN and said one or more other WPANs to perform communication during the SCTA according to a Carrier Sense Multiple Access With Collision Avoidance (CSMA/CA) protocol, and to announce the shared channel time allocation to the one or more other WPANs to enable at least one WPAN of the one or more other WPANs to use the shared channel time allocation; and

a transceiver to communicate with a communicated device of said WPAN during said shared channel time allocation using a directional network access protocol, which is directed to said communicated device, wherein using the directional network access protocol includes using the CSMA/CA protocol on a direction towards said communicated device.

10. The wireless communication device of claim 9, wherein the network controller is able to allocate within said CTAP at least one channel time allocation (CTA) dedicated to a user of said WPAN, wherein said CTA does not overlap CTAs allocated in said one or more other WPANs.

11. The wireless communication device of claim 9, wherein the network controller is able to adjust a length of the channel time allocation period and a length of the shared channel time allocation based on link traffic.

12. The wireless communication device of claim 9, wherein the network controller is able to synchronize between said superframe and each of one or more superframes of said one or more other WPANs, and to announce the shared channel time allocation in a sync beacon while other piconet controllers of the one or more other WPANs listen.

13. The wireless communication device of claim 12, wherein the network controller is able to announce the shared channel time allocation based on a number of announced WPANs.

14. The wireless communication device of claim 9, wherein the network controller is able to announce the shared channel time allocation in a dedicated frame, which includes an offset of the shared channel time allocation with respect to transmission of the dedicated frame.

15. The wireless communication device of claim 9, wherein the network controller is able to announce the shared channel time allocation to a plurality of links of said WPAN.

16. The wireless communication device of claim 9, wherein the transceiver is to communicate with the communicated device using a beamforming scheme.

17. The wireless communication device of claim 10, wherein the network controller is able to provide a base layer of data to be transmitted on said dedicated CTA and to provide an enhancement data layer of said data to be transmitted on said shared channel time allocation.

18. The wireless communication device of claim 17 comprising a wireless display, wherein the network controller of the wireless display is able to provide the base layer of said data, which includes a scalable video codec to be transmitted on the dedicated CTA and to provide the enhancement data layer of said data to be transmitted on the shared channel time allocation.

19. A wireless communication system comprising:

a piconet network controller comprising;

one or more antennas;

a network controller to assign a contention access period (CAP) within a superframe for communication within a WPAN according to a contention access mechanism, followed by a channel time allocation period (CTAP) within said superframe;

to allocate within the CTAP at least a shared channel time allocation (SCTA) for sharing by the WPAN and one or more other WPANs to allow said WPAN and said one or more other WPANs to perform communication during the SCTA according to a Carrier Sense Multiple Access With Collision Avoidance (CSMA/CA) protocol, and to announce the shared channel time allocation to the one or more other WPANs to enable at least one WPAN of the one or more other WPANs to use the shared channel time allocation; and

a transceiver to communicate with a communicated device of said WPAN during said shared channel time allocation using a directional network access protocol, which is directed to said communicated device, wherein using the directional network access protocol includes using the CSMA/CA protocol on a direction towards said communicated device.

20. The wireless communication system of claim 19, wherein the network controller is able to allocate within said CTAP at least one channel time allocation (CTA) dedicated to a user of said WPAN, wherein said CTA does not overlap CTAs allocated in said one or more other WPANs.

21. The wireless communication system of claim 19, wherein the network controller is able to adjust a length of the channel time allocation period and a length of the shared channel time allocation based on link traffic.

22. The wireless communication system of claim 19, wherein the network controller is able to synchronize between said superframe and each of one or more superframes of said one or more other WPANs, and to announce the shared channel time allocation in a sync beacon while other piconet controllers of the one or more other WPANs listen.

23. The wireless communication system of claim 22, wherein the network controller is able to announce the shared channel time allocation based on a number of announced WPANs.

24. The wireless communication system of claim 19, wherein the network controller is able to announce the shared channel time allocation in a dedicated frame, which includes an offset of the shared channel time allocation with respect to transmission of the dedicated frame.

25. The wireless communication system of claim 19, wherein the network controller is able to announce the shared channel time allocation to a plurality of links of said WPAN.

26. The wireless communication system of claim 19, wherein the transceiver is to communicate with the communicated device using a beamforming scheme.

27. The wireless communication system of claim 20, wherein the network controller is able to provide a base layer of data to be transmitted on said CTA and to provide an enhancement data layer of said data to be transmitted on said shared channel time allocation.

28. The wireless communication system of claim 27, wherein the piconet network controller comprises:

a wireless display, and wherein the network controller is able to provide the base layer of said data, which includes a scalable video codec to be transmitted on the CTA and to provide the enhancement data layer of said data to be transmitted on the shared channel time allocation.