Method of Scheduling Transmissions in a Communication System
AssigneeNokia Solutions and Networks Oy
InventorsEsa Tapani Tiirola, Kari Pekka Pajukoski, Kari Juhani Hooli
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Abstract
In a telecommunication system, a method of controlling and implementing uplink transmission schemes specifically for user equipment having multiple input/multiple output (MIMO) capability, including initialising said scheme at a network element; forwarding a message from said network element to said terminal indicating said scheme; transmitting uplink signals according to said scheme. It may include selecting a pre-coding arrangement such as a Transmitted Precoding Matrix Indicator or other scheduling grant information.
Claims48
In a telecommunication system, a method of controlling and implementing transmission schemes between a first network element and a second network element, said second network element having multiple transmit antenna capability comprising the steps of:
- i) measuring at least one parameter and or characteristic of a radio channel between the second network element and the first network element;
- ii) based on step i) initialising and/or selecting a scheme at said first network element;
- iii) forwarding a control message from said first network element to said second network element indicating said scheme;
- iv) storing data pertaining to the scheme by said second network element;
- v) transmitting signals between the network elements according to said scheme, wherein said measuring, initialising, forwarding and/or storing is not performed continuously and steps i) ii) or iii) use pre-existing scheduling grants or precoding information defined for short-term pre-coding.
A system arranged to control and implement transmission schemes between a first network element and a second network element, said second network element having multiple transmit capability, comprising:
- means to measuring at least one parameter or characteristics of a radio channel between the network elements;
- means to initialise and/or select said scheme at said first network element, based on indications from said measuring means;
- means to forward a control message from said first network element to said second network element indicating said scheme;
- means to store in said second network element data pertaining to the scheme;
- means to transmit signals between the network elements according to said scheme wherein the scheme is left unchanged for a plurality of adjacent transmitted signals, wherein said measuring, initialising, forwarding or storing means are adapted such that measuring, initialising, forwarding and/or storing is not performed continuously, and having means to use pre-existing scheduling grants or precoding information defined for short-term pre-coding.
A network element having multiple transmit capability, comprising:
- means to receive messages non-continuously, containing information indicating a scheme to control and schedule transmissions between it and other network elements;
- means to store said information;
- means to transmitting signals between it and other network elements according to said scheme;
- and,
- having means to use pre-existing scheduling grants or precoding information defined for short-term pre-coding.
A network element arranged to control and implement transmission schemes between a it and a second network element, said second network element having multiple transmit capability, comprising:
- means to measure at least one parameter or characteristics of a radio channel between the network elements;
- means to initialise and/or select said scheme at said first network element, based on indications from said measuring means;
- means to forward a message from said first network element to said second network element indicating said scheme;
- means to receive or transmit signals to or from said second network element according to said scheme,
- wherein said means to measure, select and/or forward are arranged to perform these operations non-continuously, and
- and having means to use pre-existing scheduling grants or precoding information defined for short-term pre-coding.
Dependencies are inferred from the claim text.