Power control of point to multipoint physical channels
First Claim
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1. A method of determining an efficient transmit power for point to multipoint (PtM) transmissions, the method comprising:
- maintaining a database at a base station (BS) which specifies which of a plurality of wireless transmit/receive units (WTRUs) are members of each PtM group;
adjusting a transmit power of each WTRU'"'"'s down link (DL) dedicated channel to the minimum required power necessary to maintain DL communications with each WTRU; and
setting a PtM transmit power for each PtM group, wherein the PtM transmit power of a PtM group is equal to the greatest of a WTRU in the PtM group plus a PtM power offset.
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Abstract
A method and apparatus are used to determine an efficient transmit power for point to multipoint (PtM) transmissions by maintaining a database at a base station which specifies which of a plurality of wireless transmit/receive units (WTRUs) are members of each PtM group. The transmit power of each WTRU'"'"'s downlink dedicated channel is adjusted to the minimum required power necessary and the PtM transmit power for each PtM group is set such that the PtM transmit power of a PtM group is equal to the greatest of a WTRU in the PtM group plus a PtM power offset.
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Citations
16 Claims
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1. A method of determining an efficient transmit power for point to multipoint (PtM) transmissions, the method comprising:
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maintaining a database at a base station (BS) which specifies which of a plurality of wireless transmit/receive units (WTRUs) are members of each PtM group; adjusting a transmit power of each WTRU'"'"'s down link (DL) dedicated channel to the minimum required power necessary to maintain DL communications with each WTRU; and setting a PtM transmit power for each PtM group, wherein the PtM transmit power of a PtM group is equal to the greatest of a WTRU in the PtM group plus a PtM power offset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A base station configured for determining an efficient transmit power for point to multipoint (PtM) transmissions comprising:
a processor configured to; specify which WTRUs are members of which PtM groups; determine a minimum transmit power of each the WTRU'"'"'s down link (DL) dedicated channel; and set a PtM transmit power for each PtM group, wherein the PtM transmit power of a PTM group is equal to the greatest of a WTRU in the PtM group plus a PtM power offset. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
Specification