Abstract
Methods and apparatus are disclosed for determining a physical uplink power level for transmissions on a physical uplink channel. In one embodiment, a random access channel (RACH) uplink message is transmitted. The RACH uplink message includes a RACH message power level and/or a downlink pathloss figure. A downlink message including a power offset value is received. The physical uplink power level is set for transmissions on the physical uplink channel based on the power offset value. In another embodiment, a RACH uplink message is transmitted and a downlink message including a relative power offset value is received. The physical uplink power level for transmissions on the physical uplink channel is then set based on the relative power offset value.
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 3G | 25/09/2014 | ISLD-201409-028 | INTERDIGITAL INC |
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Multiple access
Product
Use Cases
Wireless communication
Services
Claim
1. A method for determining a physical uplink power level for transmissions on a physical uplink channel, the method comprising: transmitting a random access channel (RACH) uplink message including at least one of: a RACH message power level; or a downlink pathloss figure; receiving a downlink message including a power offset value, wherein the power offset value is based on at least one of the RACH message power level or the downlink pathloss figure; and setting the physical uplink power level for transmissions on the physical uplink channel based on the power offset value.
2. The method of claim 1, wherein the RACH uplink message is one of: a RACH preamble; or a first scheduled RACH message.
3. The method of claim 1: further comprising receiving a random access response signal following transmission of a RACH preamble and before transmission of the RACH uplink message, the random access response signal having a predetermined transmission power level; wherein: the RACH uplink message is a first scheduled RACH message; a downlink pathloss is calculated based on a received power of the random access response signal and the predetermined transmission power level of the random access response signal; and the first scheduled RACH message includes the calculated downlink pathloss as the downlink pathloss figure. -13- 1097899-1 IPH-2-1925.01.WO REPLACEMENT SHEETS
4. The method of claim 1, wherein the downlink message including the power offset value is received on a physical downlink control channel.
5. The method of claim 1, wherein the physical uplink channel for which the physical uplink power level is set is on one of: a physical uplink control channel; or a physical uplink shared channel.
6. The method of claim 1, further comprising: receiving a broadcast channel message including an enable/disable indication, the enable/disable indication enabling or disabling transmission of the RACH uplink message including at least one of: the RACH message power level; or the downlink pathloss figure.
7. A wireless transmit/receive unit (WTRU) configured determine a physical uplink power level for transmissions on a physical uplink channel, comprising: a transmitter configured to transmit a random access channel (RACH) uplink message including at least one of; a RACH message power level; or a downlink pathloss figure; a receiver configured to receive a downlink message including a power offset value, wherein the power offset value is based on at least one of the RACH message power level or the downlink pathloss figure; and a physical uplink power level processor coupled to the receiver and configured to set the physical uplink power level for transmissions on the physical uplink channel based on the received power offset value.
8. The WTRU of claim 7, wherein the transmitter is configured to transmit the RACH uplink message as part of one of: a RACH preamble; or -14- 1097899-1 IPH-2-1925.01.WO REPLACEMENT SHEETS a first scheduled RACH message.
9. The WTRU of claim 7, wherein: the receiver is further configured to receive a random access response signal following transmission of a RACH preamble and before transmission of the RACH uplink message, the random access response signal having a predetermined transmission power level; the WTRU further comprises a pathloss processor coupled to the receiver and the transmitter, the pathloss processor configured to calculate a downlink pathloss based on a received power of the random access response signal and the predetermined transmission power level of the random access response signal; the transmitter is configured to transmit the RACH uplink message in a first scheduled RACH message; and the first scheduled RACH message includes the calculated downlink pathloss as the downlink pathloss figure
10. The WTRU of claim 7, wherein the receiver is configured to receive the downlink message on a physical downlink control channel
11. The WTRU of claim 7, wherein the physical uplink power level processor is configured to set the physical uplink power level on one of: a physical uplink control channel; or a physical uplink shared channel
12. The WTRU of claim 7, wherein: the receiver is coupled to the transmitter and is further configured to receive a broadcast channel message including an e nab le/dis able indication; and the transmitter is further configured to enable or disable transmission of the RACH uplink message based on the enable/disable indication received by the receiver. -15- 1097899-1 IPH-2-1925.01.WO REPLACEMENT SHEETS13. A method for determining a physical uplink power level for transmissions on a physical uplink channel, the method comprising: transmitting a random access channel (RACH) preamble; receiving a random access response signal having a predetermined transmission power level; calculating a downlink pathloss based on a received power of the random access response signal and the predetermined transmission power level of the random access response signal; transmitting a scheduled RACH message including the calculated downlink pathloss as a downlink pathloss figure; receiving a downlink message including a power offset value, wherein the power offset value is based on the downlink pathloss figure; and setting the physical uplink power level for transmissions on the physical uplink channel based on the power offset value
14. A wireless transmit/receive unit (WTRU) configured determine a physical uplink power level for transmissions on a physical uplink channel, comprising: a transmitter configured to transmit a random access channel (RACH) preamble; a receiver configured to receive a random access response signal having a predetermined transmission power level; a pathloss processor configured to calculate a downlink pathloss based on a received power of the random access response signal and the predetermined transmission power level of the random access response signal; the transmitter configured to transmit a scheduled RACH message including the calculated downlink pathloss as a downlink pathloss figure; the receiver configured to receive a downlink message including a power offset value, wherein the power offset value is based on the downlink pathloss figure; and -16- 1097899-1 IPH-2-1925.01.WO REPLACEMENT SHEETS a physical uplink power level processor configured to setting the physical uplink power level for transmissions on the physical uplink channel based on the power offset value
15. The WTRU of claim 14, wherein: the receiver is further configured to receive a broadcast channel message including an enable/disable indication; and the transmitter is further configured to enable or disable transmission of the downlink pathloss figure based on the enable/disable indication received by the receiver. Por the Applicants EEINHQLD COHN AND PARTNERS B j -17- 1097899-1']
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SUMMARY
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.