Back to results
US 11,706,796 B2Granted
Method, terminal device, base station for power control in random access procedure
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorZhipeng Lin
Life of this patent
Estimating the term…
Abstract
A method, a terminal device, and a base station for power control in random access procedure. The method implemented at a terminal device includes: obtaining at least one power control parameter to be used for a request message for a random access; and transmitting, to a base station, the request message for the random access. A power of the request message for the random access is controlled based on the at least one power control parameter. The request message comprises: a random access channel (RACH) preamble and a physical uplink shared channel (PUSCH). The power control may be achieved in a RACH procedure different with 4-step RACH procedure, such as in a 2-step RACH procedure.
Claims17
A method implemented at a terminal device, the method comprising:
- obtaining at least one power control parameter to be used for a request message for a two-step random access, wherein the request message comprises a first random access preamble and a physical uplink shared channel (PUSCH), and the at least one power control parameter comprises a first power offset between the PUSCH and the first random access preamble;
- and
- transmitting, to a base station, the request message for the two-step random access, in which the first power offset between the PUSCH and the first random access preamble is equal to a second power offset between a message 3 (msg3) and a second random access preamble in a four-step random access, wherein the second power offset between the msg3 and the second random access preamble in the four-step random access is comprised in a radio resource control (RRC) signalling message, and wherein the at least one power control parameter is used for calculating a power of the PUSCH of the request message.
A method implemented at a base station, the method comprising:
- receiving, from a terminal device, a request message for a two-step random access, in which at least one power control parameter is used for the request message, wherein the request message comprises a first random access preamble and a physical uplink shared channel (PUSCH), and the at least one power control parameter comprises a first power offset between the PUSCH and the first random access preamble, wherein the first power offset between the PUSCH and the first random access preamble is equal to a second power offset between a message 3 (msg3) and a second random access preamble in a four-step random access, wherein the second power offset between the msg3 and the second random access preamble in the four-step random access is comprised in a radio resource control (RRC) signalling message, and wherein the at least one power control parameter is used for calculating a power of the PUSCH of the request message.
A terminal device comprising:
- a processor;
- and
- a memory containing instructions which, when executed by the processor, cause the terminal device to:
- obtain at least one power control parameter to be used for a request message for a two-step random access, wherein the request message comprises a first random access preamble and a physical uplink shared channel (PUSCH), and the at least one power control parameter comprises a first power offset between the PUSCH and the first random access preamble;
- and
- transmit, to a base station, the request message for the two-step random access, in which the first power offset between the PUSCH and the first random access preamble is equal to a second power offset between a message 3 (msg3) and a second random access preamble in a four-step random access, wherein the second power offset between the msg3 and the second random access preamble in the four-step random access is comprised in a radio resource control (RRC) signalling message, and wherein the at least one power control parameter is used for calculating a power of the PUSCH of the request message.
3 more elements
A base station comprising:
- a processor;
- and
- a memory containing instructions which, when executed by the processor, cause the base station to:
- receive, from a terminal device, a request message for a two-step random access, in which at least one power control parameter is used for the request message, wherein the request message comprises a first random access preamble and a physical uplink shared channel (PUSCH), and the at least one power control parameter comprises a first power offset between the PUSCH and the first random access preamble, wherein the first power offset between the PUSCH and the first random access preamble is equal to a second power offset between a message 3 (msg3) and a second random access preamble in a four-step random access, wherein the second power offset between the msg3 and the second random access preamble in the four-step random access is comprised in a radio resource control (RRC) signalling message, and wherein the at least one power control parameter is used for calculating a power of the PUSCH of the request message.
1 more element
Dependencies are inferred from the claim text.