# US 2008/0186905 A1 · Quality Of Service Provisioning Using Periodic Channel Time Allocation

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- Number: US 2008/0186905 A1
- Document ID: US20080186905A1
- Status: Published application
- Kind: A1
- Application number: 11/908,055
- Filed: 2006-03-08
- Published: 2008-08-07
- Earliest claimed: 2005-03-08
- Assignees: Koninklijke Philips Electronics N.V.
- Inventors: Richard Y. Chen; Javier Del Prado Pavon; Sai Shankar Nandagopalan; Karl Wittig; Chun-Ting Chou; Ruediger Schmitt
- Web page: https://patentgrep.com/patent/US20080186905A1

## CPC

- H04W 74/04: Scheduled access (hybrid access H04W74/02)
- H04W 8/04: Registration at HLR or HSS [Home Subscriber Server]
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

To maximize power saving performance without compromising on the QoS requirement of an application stream, a method and wireless network device generates a subset of a periodic service interval can be used for medium time allocation and data and information can be transmitted in contiguous medium time allocated this way. This selection of a period of time below service capacity allows multiple applications access the medium and for the selection of contiguous medium time during which data transmission can occur.

## Claims

### Claim 1

A method of transmitting information over a wireless network comprising:
determining (601) a maximum periodic service interval (302) allowed based on a TSPEC including a latency requirement of an application stream, and local resource of the device;
normalizing (602) the maximum periodic service interval (302) to generate a normalized periodic service interval (303);
determining (603) a continuous period of medium access time (502) within the normalized periodic service interval (303); and
transmitting (604) information within the medium access time.

### Claim 2 (depends on 1)

The method of claim 1, wherein the normalizing step (602) further comprises dividing the superframe (301) by the smallest integer that allows the normalized periodic service interval (303) to be less than or equal to the maximum periodic service interval (302).

### Claim 3 (depends on 1)

The method of claim 1, wherein the normalizing step (602) further comprises: dividing the superframe (301) by the smallest integer that is 2n where n={0 . . . infinity}, such that it allows the normalized periodic service interval (303) to be less than or equal to the maximum periodic service interval (302).

### Claim 4 (depends on 1)

The method of claim 1, wherein the step of determining a maximum period service interval further comprises:
determining a maximum periodic service interval (302) for each application stream based on the TSPEC, including delay requirement, and local resource for each stream; and
selecting the minimum of a plurality of said maximum periodic service intervals (302) of all concurrent application streams.

### Claim 5

A wireless network comprising:
a plurality of wireless devices (101), said wireless devices each comprising:
a transmitter (110) for transmitting a signal;
a receiver (110) for receiving the signal; and
a processor (111); and
a power source (112);
wherein the processor (111) determines a periodic service interval based on a TSPEC including a delay requirement of an application stream, and local resource of the said device; normalizes the maximum periodic service interval to generate a normalized periodic service interval; determines a continuous period of medium access time within the normalized periodic service interval; and instructs the transmitter to transmit data within the medium access time.