# US 2014/0153533 A1 · Method and Base Station for Informing Power Message > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153533 A1 - Document ID: US20140153533A1 - Status: Published application - Kind: A1 - Application number: 14/233,942 - Filed: 2011-12-14 - Published: 2014-06-05 - Earliest claimed: 2011-08-09 - Assignees: Zte Corporation - Inventors: Yijian Chen; Yu Ngok Li; Bo Dai; Zhisong Zuo; Yong Li - Web page: https://patentgrep.com/patent/US20140153533A1 ## CPC - H04W 72/20: Control channels or signalling for resource management - H04W 52/04: Transmission power control [TPC] - H04W 52/16: Deriving transmission power values from another channel - H04W 52/54: Signalisation aspects of the TPC commands, e.g. frame structure - H04W 52/281: {taking into account user or data type priority} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method for informing about power information and a base station are disclosed in the present document. The method includes: a base station informing a user equipment of at least one of the following types of power ratio information through signalings: ratio information of transmission power for transmitting a second category of control signaling information to transmission power for transmitting dedicated demodulation pilots; and ratio information of transmission power for transmitting data information to transmission power for transmitting dedicated demodulation pilots in a subframe where data transmission occupies only one slot. In the example of the present document, when the second category of control signalings and the data are sent, different transmission layers and transmission powers can be selected, which solves the problem resulted from an inconsistency of Demodulation Reference Signal (DMRS) powers and avoids a demodulation error. ## Claims ### Claim 1 A method for informing about power information, comprising: a base station informing a user equipment of at least one of the following types of power ratio information through signalings: ratio information of transmission power for transmitting a second category of control signaling information to transmission power for transmitting dedicated demodulation pilots; and ratio information of transmission power for transmitting data information to transmission power for transmitting dedicated demodulation pilots in subframes where data transmission occupies only one slot. ### Claim 2 (depends on 1) The method according to claim 1, wherein: the ratio information of the transmission power for transmitting the second category of control signaling information to the transmission power for transmitting the dedicated demodulation pilots comprises: a ratio of the transmission power for the base station transmitting the second category of control signaling information to the transmission power for the base station transmitting the dedicated demodulation pilot, or a ratio of the transmission power for the base station transmitting the dedicated demodulation pilots to the transmission power for the base station transmitting the second category of control signaling information; and the ratio information of the transmission power for transmitting the data information to the transmission power for transmitting the dedicated demodulation pilots comprises: a ratio of the transmission power for the base station transmitting the data information to the transmission power for the base station transmitting the dedicated demodulation pilots, or a ratio of the transmission power for the base station transmitting the dedicated demodulation pilots to the transmission power for the base station transmitting the data information. ### Claim 3 (depends on 1) The method according to claim 1, wherein: the signalings comprise high layer signalings or physical layer signalings. ### Claim 4 (depends on 3) The method according to claim 3, wherein: the base station transmits the physical layer signalings in a first control signaling area. ### Claim 5 (depends on 3) The method according to claim 3, wherein: the base station semi-statically sends and/or updates the power ratio information through the high layer signalings. ### Claim 6 (depends on 1) The method according to claim 1, wherein: the power ratio information is a set of numerical values with decibel as a unit. ### Claim 7 (depends on 6) The method according to claim 6, wherein: the set of numerical values comprises {−6, −3, −1, 0,1, 3, 6, 9}. ### Claim 8 (depends on 1) The method according to claim 1, wherein: the signalings are of 3 bits. ### Claim 9 A base station, wherein: the base station is configured to: inform a user equipment of at least one of the following types of power ratio information through signalings: ratio information of transmission power for transmitting a second category of control signaling information to transmission power for transmitting dedicated demodulation pilots; and ratio information of transmission power for transmitting data information to transmission power for transmitting dedicated demodulation pilots in a subframe where data transmission occupies only one slot. ### Claim 10 (depends on 9) The base station according to claim 9, wherein: the base station is configured as that, the informed ratio information of the transmission power for transmitting the second category of control signaling information to the transmission power for transmitting the dedicated demodulation pilots comprises: a ratio of the transmission power for the base station transmitting the second category of control signaling information to the transmission power for the base station transmitting the dedicated demodulation pilots, or a ratio of the transmission power for the base station transmitting the dedicated demodulation pilots to the transmission power for the base station transmitting the second category of control signaling information; and the base station is configured as that, the informed ratio information of the transmission power for transmitting the data information to the transmission power for transmitting the dedicated demodulation pilots comprises: a ratio of the transmission power for the base station transmitting the data information to the transmission power for the base station transmitting the dedicated demodulation pilots, or a ratio of the transmission power for the base station transmitting the dedicated demodulation pilots to the transmission power for the base station transmitting the data information. ### Claim 11 (depends on 9) The base station according to claim 9, wherein: the base station is configured to: inform the user equipment through high layer signalings or physical layer signalings. ### Claim 12 (depends on 11) The base station according to claim 11, wherein: the base station is further configured to: transmit the physical layer signalings in a first control signaling area. ### Claim 13 (depends on 11) The base station according to claim 11, wherein: the base station is further configured to: semi-statically send and/or update the power ratio information through the high layer signalings. ### Claim 14 (depends on 9) The base station according to claim 9, wherein: the power ratio information informed by the base station is a set of numerical values with decibel as a unit. ### Claim 15 (depends on 14) The base station according to claim 14, wherein: the set of numerical values comprises {−6,−3,−1,0,1,3,6,9}. ### Claim 16 (depends on 9) The base station according to claim 9, wherein: the signalings for the base station performing informing are of 3 bits.