Method and apparatus for configuring cell-specific reference signal
First Claim
1. A method for configuring a Cell-Specific Reference Signal (CRS) in a cell including a central area and a marginal area, wherein the central area is an area in which a difference value of Reference Signal Received Power (RSRP) between the cell and a neighbour cell is higher than a predefined threshold and the marginal area is an area in which the difference value of Reference Signal Received Power (RSRP) between the cell and the neighbour cell is lower than the predefined threshold, the method comprising:
- dividing the CRS into a central CRS, a marginal CRS and a common CRS, wherein the central CRS is a CRS which is located on a transmission resource section used in the central area of the cell and is on a same symbol as a dedicated channel of the central area;
the marginal CRS is a CRS which is located on a transmission resource section used in the marginal area of the cell and is on a same symbol as a dedicated channel of the marginal area; and
the common CRS is a CRS, except for the central CRS and the marginal CRS, which is adjacent to a downlink common channel in frequency domain and is on a same symbol as the downlink common channel;
configuring a value that is obtained by adding a fixed first power value to a preset reference Energy Per Resource Element (EPRE), as an EPRE value of the marginal CRS;
configuring a value that is obtained by subtracting a fixed second power value from the preset reference EPRE, as an EPRE value of the central CRS;
configuring the reference EPRE as an EPRE value of the common CRS; and
receiving and transmitting data between the cell and a User Equipment (UE) with respect to the configured values.
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Accused Products
Abstract
The disclosure provides a method and an apparatus for configuring a Cell-Specific Reference Signal (CRS). The method includes: a cell is divided into a central area and a marginal area; a CRS is divided into a central CRS, a marginal CRS and a common CRS; a value that is obtained by adding a fixed first power value to a preset reference Energy Per Resource Element (EPRE) is configured as an EPRE value of the marginal CRS; a value that is obtained by subtracting a fixed second power value from the preset reference EPRE is configured as an EPRE value of the central CRS; and the reference EPRE is configured as the EPRE value of the common CRS. The disclosure can improve an SINR of a marginal area of a cell and enhance downlink performance of a UE in the marginal area of the cell, without affecting downlink performance of a UE in a central area of the cell.
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Citations
15 Claims
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1. A method for configuring a Cell-Specific Reference Signal (CRS) in a cell including a central area and a marginal area, wherein the central area is an area in which a difference value of Reference Signal Received Power (RSRP) between the cell and a neighbour cell is higher than a predefined threshold and the marginal area is an area in which the difference value of Reference Signal Received Power (RSRP) between the cell and the neighbour cell is lower than the predefined threshold, the method comprising:
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dividing the CRS into a central CRS, a marginal CRS and a common CRS, wherein the central CRS is a CRS which is located on a transmission resource section used in the central area of the cell and is on a same symbol as a dedicated channel of the central area;
the marginal CRS is a CRS which is located on a transmission resource section used in the marginal area of the cell and is on a same symbol as a dedicated channel of the marginal area; and
the common CRS is a CRS, except for the central CRS and the marginal CRS, which is adjacent to a downlink common channel in frequency domain and is on a same symbol as the downlink common channel;configuring a value that is obtained by adding a fixed first power value to a preset reference Energy Per Resource Element (EPRE), as an EPRE value of the marginal CRS; configuring a value that is obtained by subtracting a fixed second power value from the preset reference EPRE, as an EPRE value of the central CRS; configuring the reference EPRE as an EPRE value of the common CRS; and receiving and transmitting data between the cell and a User Equipment (UE) with respect to the configured values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14)
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8. An apparatus for configuring a Cell-Specific Reference Signal (CRS) in a cell including
a central area and a marginal area, wherein the central area is an area in which a difference value of Reference Signal Received Power (RSRP) between the cell and a neighbour cell is higher than a predefined threshold and the marginal area is an area in which the difference value of Reference Signal Received Power (RSRP) between the cell and the neighbour cell is lower than the predefined threshold, the apparatus comprising; -
a CRS division unit, configured to divide the CRS into a central CRS, a marginal CRS and a common CRS, wherein the central CRS is a CRS which is located on a transmission resource section used in the central area of the cell and is on a same symbol as a dedicated channel of the central area;
the marginal CRS is a CRS which is located on a transmission resource section used in the marginal area of the cell and is on a same symbol as a dedicated channel of the marginal area; and
the common CRS is a CRS, except for the central CRS and the marginal CRS, which is adjacent to a downlink common channel in frequency domain and is on the same symbol as the downlink common channel;a configuration unit, configured to;
configure a value that is obtained by adding a fixed first power value to a preset reference Energy Per Resource Element (EPRE), as an EPRE value of the marginal CRS;
configure a value that is obtained by subtracting a fixed second power value from the preset reference EPRE, as an EPRE value of the central CRS; and
configure the reference EPRE as an EPRE value of the common CRS; andthe apparatus configured to receive and transmit data between the cell and a User Equipment (UE) with respect to the configured values. - View Dependent Claims (9, 10, 11, 12, 13, 15)
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Specification