Techniques for aligning application output and uplink resource allocation in wireless communication systems

• US 8,755,811 B2
• Filed: 07/12/2012
• Issued: 06/17/2014
• Est. Priority Date: 11/28/2007
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Inventors: Vukovic, Ivan N., Leelahakriengkrai, Rangsan
• Primary Examiner(s): Arevalo, Joseph
• Application Number:
  US13/547,114
• Publication Number:
  US 20120275421A1
• Time in Patent Office: 705 Days
• Field of Search: 455/450, 455/509, 455/458, 455/574, 455/434, 455/452.1, 455/5, 370/337, 370/329, 370/252, 370/281, 370/335
• US Class Current: 455/452.1
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/1221 based on age of data to be sent
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

A technique for reducing a time delay between an application output at a subscriber station and uplink resource allocation for the subscriber station includes scheduling, between periodic uplink resource allocations, one or more probe uplink resource allocations for the subscriber station. Next, respective information in at least one of the one or more probe uplink resource allocations is received at an access point. Finally, subsequent periodic uplink resource allocations are scheduled based on at least one of the one or more probe uplink resource allocations.

Claims

1. A method of reducing a time delay between an application output at a subscriber station and an uplink resource allocation for the subscriber station, comprising:

determining, at the subscriber station, an optimal uplink grant time for subsequent periodic uplink resource allocations based on respective queue sizes of a queue of the subscriber station at different times, wherein the optimal uplink grant time is a periodic grant time that reduces a delay to a lowest given value; and

transmitting, to an access point, a request to provide the subsequent periodic uplink resource allocations based on the optimal uplink grant time.

2. The method of claim 1, wherein the request is provided in a frame latency field associated with an initial periodic uplink resource allocation.

3. The method of claim 1, wherein the transmitting further comprises:

transmitting, to the access point, the request during an additional uplink resource allocation that is allocated between initial periodic uplink resource allocations.

4. The method of claim 1, wherein the subscriber station communicates in real-time.