Method of Aligning Frame Transmission to Deterministic Time and Related Wireless Device

• US 20150373703A1
• Filed: 06/18/2015
• Published: 12/24/2015
• Est. Priority Date: 06/18/2014
• Status: Abandoned Application

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Su, Shih-Chang
• Application Number:
  US14/742,719
• Publication Number:
  US 20150373703A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 74/0816 with collision avoidance

Abstract

A method for a wireless device in a wireless communication system includes defining a time window prior to a first target time; and transmitting a packet to reserve a channel of the wireless communication system till a second target time when determining that the channel is clear during the time window.

Claims

1. A method for a wireless device in a wireless communication system, the method comprising:

defining, by the wireless device, a time window prior to a first target time; and

transmitting, by the wireless device, a packet to reserve a channel of the wireless communication system till a second target time when determining that the channel is clear during the time window.

2. The method of claim 1, further comprising:

transmitting, by the wireless device, a Beacon frame at the second target time, wherein the second target time is the first target time.

3. The method of claim 1, further comprising:

transmitting, by the wireless device, a Beacon frame at the first target time; and

transmitting, by the wireless device, a traffic indication map (TIM) broadcast frame at the second target time, wherein the second target time is after the first target time.

4. The method of claim 1, further comprising:

transmitting, by the wireless device, a traffic indication map (TIM) broadcast frame at the second target time, wherein the second target time is the first target time.

5. The method of claim 1, wherein the packet is a Clear to Send to self (CTS2Self) packet for triggering a Network Allocation Vector (NAV) with timing information of reserving the channel till the second target time.

6. The method of claim 1, wherein the packet comprises a physical layer convergence procedure (PLCP) length filed with timing information of reserving the channel till the second target time.

7. A wireless device in a wireless communication system, the communication device comprising:

a computing unit; and

a storage unit, for storing a program code used for instructing the computing unit to perform the following steps;

defining, by the wireless device, a time window prior to a first target time; and

transmitting, by the wireless device, a packet to reserve a channel of the wireless communication system till a second target time when determining that the channel is clear during the time window.

8. The wireless device of claim 7, wherein the program code further instructs the computing unit to perform the following steps:

transmitting, by the wireless device, a Beacon frame at the second target time, wherein the second target time is the first target time.

9. The wireless device of claim 7, wherein the program code further instructs the computing unit to perform the following steps:

transmitting, by the wireless device a Beacon frame at the first target time; and

transmitting, by the wireless device, a traffic indication map (TIM) broadcast frame at the second target time, wherein the second target time is after the first target time.

10. The wireless device of claim 7, wherein the program code further instructs the computing unit to perform the following steps:

transmitting a traffic indication map (TIM) broadcast frame at the second target time, wherein the second target time is the first target time.

11. The wireless device of claim 7, wherein the packet is a Clear to Send to self (CTS2Self) packet for triggering a Net Allocation Vector (NAV) with timing information of reserving the channel till the second target time.

12. The wireless device of claim 7, wherein the packet comprises a physical layer convergence procedure (PLCP) length filed with timing information of reserving the channel till the second target time.