Scheduler system and method thereof
AssigneeKoninklijke Philips Electronics N.V.
InventorsJavier Pavon, Sai Nandagopalan, Amjad Soomro
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Abstract
Disclosed is a method and system based on MAC frames for enabling a QAP to seamlessly operate between granting polls for upstream and sidestream traffic while sending downstream frames. The inventive scheduling method uses a minimum set of mandatory TSPEC parameters to generate a schedule, which provides minimum performance requirement in wireless local area networks (WLANs).
Claims26
A method for scheduling the transmission of a data stream in a wireless communications network having at least one access point (QAP) (103) and at least one station (WSTA) (110, 112, 114), the method comprising the steps of:
- receiving a request to send at least one data stream for transmission from at least one WSTA (110, 112, 114) by said QAP(103);
- granting, by said QAP(103), said request to send said at least one data stream;
- transmitting, by said at least one WSTA(110, 112, 114), a MAC frame comprised of a set of parameters defining the characteristics of said at least one data stream;
- and,
- calculating, by said QAP(103), service and transmission times according to a schedule algorithm for servicing said at least one WSTA(110, 112, 114).
A method for scheduling the transmission of a data stream in a wireless communications network having at least one access point (QAP)(103) and at least one station (WSTA) (110, 112, 114), the method comprising the steps of:
- determining, at said QAP(103), whether at least one data stream is originated from said at least one WSTA(110, 112, 114) based on a MAC frame comprised of a set of parameters defining the characteristics of said at least one upstream sidestream or downstream traffic stream;
- computing service and transmission times, at said QAP(103), for servicing said at least one WSTA(110, 112, 114) in accordance with a schedule algorithm;
- and,
- transmitting, by said at least one WSTA(110, 112, 114), said at least one data stream at said computed service and transmission times.
A system for seamlessly granting polls for upstream and/or sidestream traffic while simultaneously sending downstream traffic from said (AP)(103) to said at least one WSTA(110, 112, 114), the system comprising:
- a memory for storing a computer-readable code;
- and,
- a processor operatively coupled to said memory, said processor configured to:
- (1) receive a request to send at least one data stream for transmission from at least one WSTA(110, 112, 114) by said QAP(103);
- (2) grant said request to send said at least one data stream by said WSTA (110, 112, 114) or QAP(103);
- (3) transmit, by said at least one WSTA(110, 112, 114), a MAC frame comprised of a set of parameters defining the characteristics of said at least one data stream;
- and,
- (4) calculate, by said QAP(103), service and transmission times according to a schedule algorithm for servicing said at least one WSTA(110, 112, 114).
The system of claim 19, wherein the parameters of said MAC frame includes:
- Mean Data Rate (ρi), Nominal MSDU Size (Li), and Maximum Service Interval or Delay Bound (Di).
A system for scheduling the transmission of a data stream in a wireless communications network having at least one access point (QAP)(103) and at least one station (WSTA) (110, 112, 114), the system comprising:
- means for determining, at said QAP(103), whether at least one data stream is originated from said at least one WSTA(110, 112, 114) based on a MAC frame comprised of a set of parameters defining the characteristics of said at least one data stream;
- means for computing service and transmission times, at said QAP(103), for servicing said at least one WSTA(110, 112, 114) in accordance with a schedule algorithm;
- and,
- means for transmitting, by said at least one WSTA(110, 112, 114), said at least one data stream at said computed service and transmission times.
Dependencies are inferred from the claim text.