Unlock instant, AI-driven research and patent intelligence for your innovation.

Uplink power control in a TDD communication system

A power control and downlink technology, applied in the field of communication systems, can solve the problems of channel quality indicators working well at the same time, etc.

Inactive Publication Date: 2011-02-23
TELEFON AB LM ERICSSON (PUBL)
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this regard, setting common power for both slots and working well for ACK / NACK and Channel Quality Indicator (CQI) simultaneously is difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Uplink power control in a TDD communication system
  • Uplink power control in a TDD communication system
  • Uplink power control in a TDD communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The following detailed description refers to the accompanying drawings. The same reference numbers in different drawings may identify the same or similar elements. Likewise, the following description does not limit the invention.

[0027]Embodiments described herein may provide a power control scheme applicable to TDD communication systems. This power control scheme can measure the path loss associated with the frequency band that the UE is expected to transmit. For example, the frequency band may correspond to a scheduled frequency band (eg, uplink data channel) or an allocated channel (eg, uplink control and / or signaling channel). This is not like the prior art where the path loss can be determined based on the entire (downlink) spectrum. Path loss measurements may also include path loss measurements corresponding to individual frequency bands. A single path loss measurement can be used for power allocation. Based on the power control scheme described herein, hig...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A power control scheme may include measuring path loss on frequency bands that a device intends to transmit. The frequency bands may correspond to a channel allocation and / or a scheduled grant. The device may allocate power based on individual path losses that correspond to the frequency bands in which the device intends to transmit.

Description

technical field [0001] Implementations described herein relate generally to communication systems. More specifically, implementations described herein relate to power control schemes in time division duplex (TDD) communication systems. Background technique [0002] In a communication system, such as a wireless communication system, devices communicate with each other while managing various parameters associated with the communication links. For example, wireless stations and user equipment (UE) communicate with each other while managing various parameters associated with the communication link, such as power control. For a TDD communication system, the same frequency band can be used in uplink and downlink at the same time, so that channel reciprocity exists. In this regard, the requirement to provide continuous feedback on channel estimates may not be necessary. [0003] Long Term Evolution (LTE) is one of many communication platforms that support TDD. In LTE, the Physi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04B7/005
CPCH04W52/146H04W52/242H04W52/10
Inventor 佩尔·布斯特伦安德斯·富鲁斯卡尔戴维·阿斯特利阿尔内·西蒙松
Owner TELEFON AB LM ERICSSON (PUBL)