Detection of time division duplex downlink / uplink configuration

A downlink and blind detection technology, applied in multiplex communication, orthogonal multiplex system, channel estimation, etc., can solve problems such as delayed switching process

Active Publication Date: 2010-12-29
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Restricting the RS from only these slots results in a noisy RSRP (or similar) measurement, thus requiring a longer averaging time to generate a useful value, thus delaying the handover process

Method used

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  • Detection of time division duplex downlink / uplink configuration
  • Detection of time division duplex downlink / uplink configuration
  • Detection of time division duplex downlink / uplink configuration

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Embodiment Construction

[0058] Various features of the invention will now be described with reference to the figures, wherein like parts are identified by like reference characters.

[0059] Various aspects of the invention will now be described in more detail with reference to a number of exemplary embodiments. To facilitate understanding of the invention, many aspects of the invention are described in terms of sequences of actions performed by elements of a computer system or other hardware capable of executing programmed instructions. In each of the embodiments it will be appreciated that the various acts can be performed by dedicated circuitry (e.g., discrete logic gates interconnected to perform dedicated functions), by program instructions being executed by one or more processors, or by A combination of the two is performed. In addition, the present invention is alternatively contemplated to be embodied entirely within any form of computer readable carrier, such as solid state memory, magnetic...

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Abstract

A user equipment (UE) in a cellular telecommunications system is able to detect the uplink / downlink configuration of a detected neighboring cell by receiving a signal from the neighboring cell. A characteristic of the received signal is detected and used as an indicator in a blind detection process to identify one or more downlink slots in the received signal. Known pilot signals in the identified one or more downlink slots can then be used to obtain a signal power measurement of the received signal. The blind detection process is also capable of detecting whether a slot of a neighboring cell's signal is a downlink unicast slot or a Multicast-Broadcast Single Frequency Network slot.

Description

Background technique [0001] The present invention relates to cellular telecommunications, more particularly to cellular telecommunications employing both frequency division duplex (FDD) and time division duplex (TDD) transmission, and even more particularly to enabling user equipment, inter alia, to A (UE) method and apparatus capable of determining whether a transmission of a neighboring cell is an uplink or a downlink transmission. [0002] In the upcoming evolution of mobile cellular standards like Global System for Mobile Communications (GSM) and Wideband Code Division Multiple Access (WCDMA), new transmission technologies like Orthogonal Frequency Division Multiplexing (OFDM) may emerge. Furthermore, for a smooth migration of existing cellular systems to new high-capacity high-data-rate systems in the existing radio spectrum, the new system must be able to utilize bandwidths of varying sizes. One proposal for such a flexible cellular system known as Third Generation Long...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04W36/00
CPCH04W36/30H04L27/2647H04L25/0224H04B17/0057H04B17/0077H04B17/0045H04L25/022H04J11/0093H04W48/16H04B17/318H04B17/327H04B17/382H04W36/00835H04W36/0085H04B17/15
Inventor B·林多夫M·卡兹米J·尼尔森D·阿斯特利
Owner TELEFON AB LM ERICSSON (PUBL)
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