Wireless communication terminal device and wireless communication method

A technology of wireless communication terminal and control information, applied in wireless communication, multiplexing communication, location diversity and other directions, can solve the problem of high possibility of adaptive control utilization
CN103765941BActive Publication Date: 2018-04-10SUN PATENT TRUST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUN PATENT TRUST
Publication Date
2018-04-10

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Abstract

Disclosed is a radio terminal capable of providing flexible transmission power control of SRS without being restricted by transmission power control of PUSCH in order to realize utilization of SRS for various purposes in a HetNet CoMP environment. The wireless terminal receives a control signal including a transmission power control command (TPC command) applicable to an aperiodic sounding reference signal (A-SRS) through the physical downlink control channel (PDCCH), and uses the TPC command to update the A-SRS transmit the power value, and transmit the A-SRS with the updated transmit power value according to the transmission request contained in the control signal notifying the allocation of the physical downlink data channel (PDSCH) or the allocation of the physical uplink data channel (PUSCH).
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Description

technical field

[0001] The present invention relates to a wireless communication terminal device, a wireless communication base station device, and a wireless communication method. Background technique

[0002] In the uplink of LTE (Long Term Evolution, Long Term Evolution) and its improved LTE-A (LTE-Advanced, Advanced LTE) formulated in 3GPP (3rd Generation Partnership Project, Third Generation Partnership Project), adopt SC-FDMA (Single-Carrier Frequency-Division Multiple Access, Single-Carrier Frequency-Division Multiple Access) with small PAPR (Peak-to-Average Power Ratio, average peak power ratio) and high terminal power utilization efficiency (for example, refer to non-patent literature 1~4). In addition, in the uplink of LTE and LTE-A, scheduling to allocate time resources and frequency resources according to the channel environment of the terminal, and adaptive control to control the coding rate or modulation scheme are performed. In order to achieve high throughp...

Claims

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