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Overall slot location for reduced tpc frequency operation - tpc command combination period

A time slot and command technology, applied in the direction of location diversity, power management, diversity/multi-antenna system, etc.

Active Publication Date: 2021-03-23
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Same issue when using F-DPCH slot format #0

Method used

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  • Overall slot location for reduced tpc frequency operation - tpc command combination period
  • Overall slot location for reduced tpc frequency operation - tpc command combination period
  • Overall slot location for reduced tpc frequency operation - tpc command combination period

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Embodiment 1: A method for mapping a transmit power control TPC command in a time slot of a radio frame to be sent on the downlink with at least one wireless device, the method comprising:

[0106] mapping the TPC command to one of a first slot within the slot cycle of the radio frame and a second slot within the slot cycle of the radio frame; and

[0107] The TPC combining period starts based on whether the TPC command is mapped to the first slot or the second slot.

Embodiment 2

[0108] Embodiment 2: The method according to embodiment 1, wherein when the TPC is to be mapped to the first time slot, then the TPC combining period starts in the downlink time slot boundary of the Partial Dedicated Physical Channel F-DPCH.

Embodiment 3

[0109] Embodiment 3: The method according to embodiment 1, wherein when the TPC is to be mapped to the second time slot, the start of the TPC combining period relative to the start of the primary common control physical channel P-CCPCH is given by :

[0110] TPC_TX_offset=(tF-DPCH+2560*k*N+start_offset+256*NOFF1 / 2) modulo38400,

[0111] where k=0, 1, .., 15 / N-1, and where start_offset=2560 if NOFF1=0, otherwise start_offset=0, tF-DPCH is part of the dedicated physical channel F-DPCH frame relative to P-CCPCH The timing offset, NOFF1, can be found in the F-DPCH slot format table for the slot format used.

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Abstract

Methods and systems are provided for mapping transmit power control TPC commands in time slots of radio frames to be sent on the downlink to at least one wireless device. According to one aspect, a method includes sending a TPC command in one of a first slot and a second slot within a slot cycle of a radio frame, using a TPC symbol position for performing a TPC based on a configured slot format Mapping of commands.

Description

technical field [0001] The invention relates to wireless communication, in particular to power control of a wireless communication system. Background technique [0002] As part of Release 13 of the 3rd Generation Partnership Project (3GPP), studies have been conducted on downlink enhancements to the Universal Mobile Telecommunications System (UMTS). Within the domain of expertise of the Technical Specifications Group (TSG) Radio Access Network (RAN) Working Group 1 (WG1), the Study Item Description (SID) includes the introduction of a Possibility of new algorithms. From the studies carried out during the research project phase, two candidate algorithms for processing DL TPC commands were derived, which are described as "Repetition of TPC Commands" and "Discontinuous Transmission of TPC Commands (DTX)" algorithms, respectively. [0003] In 3GPP meeting RAN1#82, TSG RAN WG1 selected the "DTX of TPC command" algorithm as a new power control algorithm to be standardized in 3GP...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/58H04B7/022H04W52/40H04W52/42
CPCH04W52/58H04W52/54
Inventor 弗雷德里克·奥维斯琼杰拉尔多·阿格尼·梅迪那阿克斯塔埃里克·拉森
Owner TELEFON AB LM ERICSSON (PUBL)